Condition Responsive Control Of Heater, Cooler, Igniter, Or Fuel Supply Of Reactor

Condition Responsive Control Of Heater, Cooler, Igniter, Or Fuel Supply Of Reactor patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

01/03/08 - 20080000221 - Process and system for removing soot from particulate filters of vehicle exhaust systems
A motor vehicle exhaust aftertreatment system includes an exhaust conduit that includes a NOx adsorber, a particulate filter, a reformer for generating reformate containing hydrogen and carbon monoxide from a fuel source, a reformate conduit, and an oxygen sensor. In response to a pressure drop through the particulate filter attaining ...

11/29/07 - 20070271908 - Engine exhaust emission control system providing on-board ammonia generation
An exhaust emission control system that provides on-board ammonia generation includes a valve disposed upstream of the LNT and SCR catalyst that operates to selectively control the flow of engine exhaust gas to an LNT and/or an SCR catalyst; while reformate fuel is being conveyed from a reformer to the ...

11/15/07 - 20070261393 - Multi-cylinder internal combustion engine
A multi-cylinder internal combustion engine, wherein exhaust gas outlets of a first portion of the cylinders of the engine communicate with a first exhaust gas manifold section, and the exhaust gas outlets of the remaining cylinders communicate with a second exhaust gas manifold section. An oxidation catalytic converter is disposed ...

11/15/07 - 20070261392 - Procedure to operate a particle filter disposed in an exhaust gas area of an internal combustion engine and device to implement the procedure
A procedure to operate a particle filter disposed in an exhaust gas area of an internal combustion engine and a device to implement the procedure are proposed. The particle filter is regenerated if required by the particles lodged in the filter, whereby the particle filter is heated for regeneration by ...

11/08/07 - 20070256408 - Particulate matter remaining amount estimating method for particulate filter and particulate filter regenerating method
Every time a specified period of time is counted during execution of filter regeneration control, a PM remaining amount every time that the specified period of time passes is estimated by subtracting the product of the specified period of time, a PM removal rate per unit time, and a PM ...

11/08/07 - 20070256407 - Reformer temperature control with leading temperature estimation
One concept relates to a method of controlling fuel reforming within an internal combustion engine exhaust line. Fuel injections are controlled using a predicted temperature, the predicted temperature being a temperature that would occur at some point in the future if predetermined assumptions are met. Preferably, the prediction is made ...

11/01/07 - 20070251218 - Nox control using a neural network
A method of controlling engine NOx production is provided. The method may include determining a desired amount of NOx production for at least one engine cylinder at a first time and determining at least one engine operating parameter to produce the desired amount of NOx using a feed-forward neural network. ...

10/25/07 - 20070245720 - Method and system for reducing pollutant emissions of a power system
A method for reducing pollutant emissions of a power system may include the steps of providing a first portion of an ethanol additive to a first power source, wherein the first power source includes a combustion chamber. The method may also include supplying a second portion of the ethanol additive ...

10/25/07 - 20070245719 - System for increasing efficiency of an scr catalyst
A power source has at least one combustion chamber, an exhaust system fluidly connected to the at least one combustion chamber and configured to receive an exhaust-gas stream, and a fuel source configured to supply fuel to the at least one combustion chamber. The power source also has an additive ...

10/25/07 - 20070245718 - Exhaust aftertreatment mixer with stamped muffler flange
An exhaust aftertreatment system, including injection of chemical species, has a mixer in the exhaust pipe between the injector and the aftertreatment element. The mixer is provided by a stamped muffler flange. ...

10/18/07 - 20070240405 - Exhaust gas purification apparatus
An exhaust gas purification apparatus of an engine, capable of preventing erroneous detection of an injection nozzle clogging, and having a reducing catalytic converter disposed in an exhaust system, for reducing and purifying nitrogen oxide in the exhaust gas using urea water; a urea water tank storing the urea water; ...

10/04/07 - 20070227127 - Diesel exhaust dosing valve
Dosing structure 30 is provided for supplying diesel fuel to an exhaust passage 12 of a diesel system. The dosing structure includes an electrically operated control valve 31 constructed and arranged to receive a supply of diesel fuel. A dosing valve 32 is constructed and arranged to receive fuel from ...

10/04/07 - 20070227125 - Assured compliance mode of operating a combustion system
A combustion system is operated with reference to compliant values of a governmentally regulated exhaust emission parameter. If an alarm condition is detected during an ordinary mode of operation, the combustion system is shifted into an assured compliance mode of operation. The shift to the assured compliance mode is made ...

09/27/07 - 20070220866 - Exhaust gas control apparatus for internal combustion engine
A bypass passage is provided, which connects a portion upstream of a turbine of a supercharger in an exhaust passage to a portion close to a front end surface of exhaust gas purification in the exhaust passage, and through which at least part of exhaust gas discharged from an internal ...

09/27/07 - 20070220864 - Control methods for low emission internal combustion system
Improved transient response times are obtained while maintaining low emissions with a low pressure EGR system through methods for quickly obtaining a desired oxygen concentration for charge-air to be used for combustion. Under a first method, fuel quantity in the main combustion event is controlled in the combustion process to ...

09/13/07 - 20070209349 - Method and device for introducing a reagent into an exhaust gas channel of an internal combustion engine
A procedure to introduce a reagent substance into the exhaust duct of an internal combustion engine and a device to implement the procedure are proposed. At least one catalytic converter is disposed in the exhaust duct of the internal combustion engine. In front of the aforementioned catalytic converter(s), a reagent ...

08/30/07 - 20070199309 - Exhaust gas purification apparatus
An exhaust gas purification apparatus includes an NOx reduction catalytic converter disposed in an engine exhaust passage to reductively purify NOx in exhaust gas using ammonia or its precursor as a reducing agent, a first concentration sensor which detects an ammonia concentration in an exhaust gas moving on a downstream ...

08/30/07 - 20070199308 - Exhaust emission purifying apparatus for engine
The present invention is directed to defrost a reducing agent with cooling water of an engine and to prevent water scale from being deposited and accumulated on a cooling water pipe for circulating the cooling water. A frozen reducing agent is defrosted by being heated with cooling water of an ...

08/30/07 - 20070199307 - Method for determining nox reduction ratio in exhaust emission control device
When urea water U is injected by an addition nozzle 7 upstream of NOx reduction catalyst 6 incorporated in an exhaust passage 5 of a diesel engine 1 so as to reduce and purify NOx in exhaust G, both a value measured by a NOx concentration sensor 9 upstream of ...

08/30/07 - 20070199306 - System having multiple valves operated by common controller
A control system for a power system is disclosed. The control system has a first valve mechanism, a second valve mechanism, and a controller in communication with the first and second valve mechanisms. The controller is configured to direct a single electronic control signal to the first and second valve ...

08/23/07 - 20070193255 - Liquid reducing agent injection nozzle having novel structure
The present invention relates to a structure of a liquid reducing agent injection nozzle in an exhaust emission purifying system arranged to inject and supply a liquid reducing agent into an exhaust flow passage so as to reduce and purify NOx in exhaust gas. A nozzle tip end portion of ...

08/23/07 - 20070193254 - Combustion engine exhaust after-treatment system incorporating syngas generator
A combustion engine exhaust after-treatment system includes a syngas generator for producing a syngas stream. The syngas stream is supplied to one or more parts of the engine system resulting in reduced emissions and/or reduced fuel consumption. The syngas generator produces a syngas stream via chemical reaction of the engine ...

08/23/07 - 20070193253 - Method for controlling exhaust emission control device
When urea water U is injected by an addition nozzle 7 upstream of a NOx reduction catalyst 6 incorporated in the passage 5 so as to reduce and purify NOx in exhaust gas G, a target adsorption amount curve is set by shifting to lower temperature side a saturated adsorption ...

08/23/07 - 20070193252 - Exhaust aftertreatment device with star-plugged turbulator
An exhaust aftertreatment device has a turbulator provided by a tube having a perforated star-plugged downstream end. ...

08/16/07 - 20070186543 - Arrangement for the dosed injection of a reducing medium into the exhaust tract of an internal combustion engine
In an arrangement for the dosed injection of a reducing agent into the exhaust tract of an internal combustion engine, comprising a pump for the pulsed pumping of the reducing agent and an atomizing injection nozzle disposed in the exhaust tract of the internal combustion engine, the injection nozzle includes ...

08/16/07 - 20070186542 - Exhaust gas purification apparatus of engine
A liquid reducing agent of a necessary amount according to an engine operating condition is injection-supplied from a nozzle having an injection hole opening to inside an exhaust gas passage, positioned on an exhaust gas upstream side of a nitrogen oxide reduction catalyst. On the other hand, when an injection ...

08/09/07 - 20070180819 - Process and system for improving combustion and exhaust aftertreatment of motor vehicle engines
A diesel combustion engine system providing improved fuel combustion and exhaust aftertreatment includes: a diesel combustion engine having a liquid fuel intake, an air intake, a reformate intake, and an exhaust outlet; a liquid diesel fuel source in fluid communication with the liquid fuel intake and an on-board catalytic partial ...

08/09/07 - 20070180818 - Exhaust purifying apparatus for internal combustion engine
An exhaust purifying apparatus for an internal combustion engine includes an exhaust purifying mechanism, a fuel adding device, an electronic control device. The exhaust purifying mechanism is located in an exhaust passage and traps particulate matter. The fuel adding device adds fuel to exhaust gas that passes through the mechanism. ...

08/02/07 - 20070175208 - Exhaust gas aftertreatment installation and method
An exhaust gas aftertreatment installment and associated exhaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR ...

08/02/07 - 20070175207 - Procedure and device to control a reducing agent generation system
The invention concerns a procedure to control a reducing agent generation system of an internal combustion engine, in which the reagent substance is generated in the form of pulses by the reducing agent generation system and is delivered to an exhaust gas duct of the internal combustion engine in front ...

08/02/07 - 20070175206 - Nox adsorber aftertreatment system for internal combustion engines
The present invention provides for an NOx adsorber aftertreatment system for internal combustion engines which utilizes a parallel arrangement of an adsorber catalyst and a bypass. The exhaust flow from the engine is routed through the adsorber during lean operation. At a predetermined regeneration time (for example, when the adsorber ...

08/02/07 - 20070175205 - System for selective homogeneous charge compression ignition
A method of operating an internal combustion engine may include selectively operating the engine in a first mode of operation, wherein fuel may be injected into compressed fluid to create a substantially heterogeneous mixture of fuel and compressed fluid, and fuel may be ignited by the heat of the compressed ...

08/02/07 - 20070175204 - Scr muffler
An SCR muffler retains the heat of a reducing agent, etc., supplying nozzle and an exhaust pipe, thereby preventing the reduction of the efficiency of an SCR catalyst purging nitrogen oxide (NOx) even at low temperatures and improving the durability of the reducing agent, etc., supplying nozzle. The SCRmuffler comprises ...

07/26/07 - 20070169468 - Exhaust purifying apparatus for internal combusion engine
An exhaust purifying apparatus for an internal combustion engine having a DPNR converter (26), a fuel adding device (46), and an electronic control device (50) is provided. The DPNR converter (26) is located in an exhaust passage (14) of the internal combustion engine (10). The DPNR converter (26) traps particulate ...

07/26/07 - 20070169467 - Scr muffler
The flow of exhaust gas flowing through the SCR muffler becomes good, thus improving the efficiency of purging nitrogen oxide (NOx) contained in exhaust gas. Further, vibrations that are caused by vibrations of the vehicle, exhaust gas, and the like, to which a reducing agent, etc., supplying nozzle is subject, ...

07/19/07 - 20070163245 - Reagent refill and supply system for an scr exhaust aftertreatment system
An internal combustion engine includes an exhaust manifold, and a selective catalytic reduction exhaust aftertreatment system. The selective catalytic reduction exhaust aftertreatment system includes a reduction catalytic converter in communication with the exhaust manifold; a reagent holding tank in fluid communication with the reduction catalytic converter; and a reagent supply ...

07/19/07 - 20070163243 - Exhaust system with cam-operated valve assembly and associated method
An exhaust system for use with an engine comprises at least one valve and a camshaft. The at least one valve is configured to control flow in the exhaust system but is discrete from each intake valve of the engine and each exhaust valve of the engine. The camshaft is ...

07/19/07 - 20070163242 - Exhaust purifying apparatus and exhaust purifying method for internal combustion engine
In an exhaust purifying apparatus for an internal combustion engine on a vehicle, heating control is executed for supplying fuel to exhaust purification catalysts, thereby increasing the catalyst bed temperature. The heating control is suspended when the vehicle is determined to be driving downhill. Adverse influences due to deactivation of ...

07/19/07 - 20070163241 - Method and apparatus for posttreatment of an exhaust gas from an internal combustion engine
A method of and an apparatus for posttreatment of an exhaust gas from an internal combustion engine, in which a substance to be mixed with the exhaust gas is sprayed in metered quantities into an exhaust gas line through which the exhaust gas flows. The substance is sprayed onto an ...

07/19/07 - 20070163240 - Exhaust gas purifying apparatus and exhaust gas purifying method of an engine
In an SCR apparatus mounted on a vehicle, the concentration of a reducing agent or a precursor thereof contained in an aqueous solution of the reducing agent or the precursor is accurately detected. In sensing the concentration, whether or not the urea water stored in a storage tank is in ...

07/19/07 - 20070163239 - Internal combustion engine with exhaust treatment system
An internal combustion engine has an exhaust treatment system for reducing pollutants in the exhaust. The system includes a reservoir containing an active ingredient a delivery device for delivering the active ingredient and an injection device for injecting the active ingredient into the exhaust. According to the present invention, the ...

07/19/07 - 20070163238 - Method for metering a reagent into the exhaust gas flow of an internal combustion engine
A method for metering a reagent into the exhaust gas flow of an internal combustion engine is provided, in which the reagent is guided in at least one component and in which a measure for the temperature of the component is recorded. The measure for the temperature is compared to ...

07/12/07 - 20070157608 - Catalyst system for the reduction of nox and nh3 emissions
This catalyst system simultaneously removes ammonia and enhances net NOx, conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx, trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx, trap generated during the rich pulses. The stored ammonia then reacts with the ...

07/05/07 - 20070151232 - Devices and methods for reduction of nox emissions from lean burn engines
The invention provides devices and methods for generating H2 and CO in an O2 containing gas stream. The invention also provides devices and methods for removal of NOX from an O2 containing gas stream, particularly the oxygen-rich exhaust stream from a lean-burning engine, such as a diesel engine. The invention ...

06/28/07 - 20070144153 - Catalyst system for the reduction of nox and nh3 emissions
This catalyst system simultaneously removes ammonia and enhances net NO, conversion by placing an NH3-SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3-SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the ...

06/28/07 - 20070144152 - Procedure and control unit to operate an integrated scr/dpf system
A procedure is introduced to operate a particle filter, which is disposed in the exhaust gas stream of an internal combustion engine and which collects particles from the exhaust gas and possesses the capability for selective catalytic reduction of nitrogen oxides, whereby the selective catalytic reduction is set off by ...

06/28/07 - 20070144150 - Procedure for controlling the reducing agent in an exhaust gas post-processing system
The invention relates to a procedure for controlling the reducing agent in an exhaust gas post-processing system of a combustion machine with an exhaust gas duct, in which an SCR catalytic converter is provided in the direction of flow of the exhaust, wherein a reducing agent generation system has an ...

06/28/07 - 20070144149 - Controlled regeneration system
A system for controlled regeneration of a lean NOx trap for an internal combustion engine. The system may include regenerating one trap or a portion of a lean NOx trap while using another trap or portion of the lean NOx trap for an exhaust, and then interchanging operations. The portions ...

06/28/07 - 20070144148 - System for assisting the regeneration of depollution means included in a motor vehicle exhaust line
This system for assisting the regeneration of depollution means associated with oxidation catalyst-forming means implementing an OSC function, constituting a supply of oxygen and integrated in an exhaust line of a motor vehicle diesel engine, in which the engine is associated with common rail means for feeding its cylinders with ...

06/21/07 - 20070137184 - Catalyzed scr filter and emission treatment system
Provided is an emission treatment system and method for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The emission treatment system has an oxidation catalyst upstream of a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) ...

06/21/07 - 20070137183 - Exhaust gas purifying system for internal combustion engine
An NOx catalytic converter, which includes an NOx storage and reduction catalyst, absorbs NOx contained in exhaust gas of an engine. The absorbed NOx is deoxidized and eliminated when an NOx deoxidizing agent is supplied to the catalytic converter. An ECU determines a purifying performance of the catalytic converter based ...

06/21/07 - 20070137182 - Selective catalytic reduction system
A method of controlling ammonia and nitric oxides production for selective catalytic reduction systems is provided. The method may include producing an ammonia-containing gas stream having an ammonia concentration. The method may further include operating an engine to continuously produce a NOx-containing gas stream having a NOx concentration. The ammonia-containing ...

06/21/07 - 20070137181 - Exhaust gas aftertreatment systems
A method are presented for monitoring an amount of ammonia stored in a urea-based SCR catalyst based on a response of a sensor coupled downstream of the catalyst to a periodic desorbtion of a small amount of ammonia. The sensor could be an ammonia sensor, or a NOx sensor whose ...

06/21/07 - 20070137180 - Regeneration controller for exhaust purifying apparatus of internal combustion engine
A regeneration controller for an exhaust purification apparatus (36, 38) of an engine (2) that appropriately burns particulate matter accumulated in the exhaust purification apparatus. The regeneration controller includes an ECU (70) that determines, whether an estimated accumulation amount (PMsm) of particulate matter deviates from an actual accumulation amount. When ...

06/14/07 - 20070130920 - Method for regenerating nox absorbing catalyst
A method for regenerating a NOx absorbing catalyst includes: detecting a NOx value by a NOx sensor and determining whether to perform a regeneration mode or not based on a comparison of the sensed value and a predetermined upper limit; performing a first regeneration mode for a predetermined time period; ...

06/14/07 - 20070130919 - Method and apparatus for controlling regeneration of simultaneous nox-pm reduction device
The present invention provides a method for controlling regeneration of the simultaneous NOx-PM reduction apparatus having a lean NOx trap (LNT) for removing nitrogen oxide (NOx) an engine and a catalytic particulate filter (CPF) for trapping a particulate matter (PM) of the engine. According to an exemplary method, depending on ...

06/14/07 - 20070130918 - System and method for supplying reductants to an emission treatment system
System and method for supplying reductants to an emission treatment system. The system includes a fuel tank adapted to supply a premixed fuel stream that includes a primary component and a reductant component, and an engine in fluid communication with the fuel tank, wherein the engine is configured to create ...

06/14/07 - 20070130917 - System for assisting in the regeneration of motor vehicle depollution means integrated in an exhaust line of a vehicle diesel engine
This system in which the depollution means (1) are associated with oxidation catalyst-formed means (2), and the engine (4) is associated with common rail means (7) for feeding it with fuel and adapted to implement a regeneration strategy using at least one post-injection of fuel into the cylinders, is characterized ...

06/14/07 - 20070130916 - System for assisting the regeneration of depollution means integrated in an exhaust line of a vehicle diesel engine
This system in which the depollution means (1) are associated with oxidation catalyst-forming means (2), and the engine (4) is associated with common rail means (7) for feeding it with fuel and adapted to implement the strategy Of regeneration using At least one postinjection of fuel into the cylinders, is ...

06/07/07 - 20070125073 - Lnt desulfation strategy
A fuel reformer is configured in an exhaust line upstream of a LNT. To desulfate the LNT, over a first period, fuel is provided to the exhaust to make the exhaust rich. While producing reformate, the reformer is allowed to heat to a relatively large extent, typically at least about ...

06/07/07 - 20070125072 - Lnt desulfation strategy with reformer temperature management
Desulfation methods for an exhaust treatment system having a fuel reformer configured upstream of a LNT. Reductant is injected upstream of the fuel reformer. The reductant reacts within the reformer to generate heat, but the system is configured for some reductant to breakthrough and react in the LNT to generate ...

06/07/07 - 20070125071 - Method and device for controlling the injection of reducing agent
The invention relates to a method and device (10) for controlling the injection of reducing agent upstream from a catalyst (4) in an exhaust line (2) from a combustion engine. According to the invention, the injection of reducing agent in the exhaust line is controlled on the basis of result ...

05/31/07 - 20070119154 - Procedure and device to heat a reducing agent generation system
The invention concerns a procedure to heat a reducing agent generation system of an exhaust gas aftertreatment system of an internal combustion engine by combustion of fuel, whereby the reducing agent is produced for the selective catalytic reduction of nitrogen oxides in the exhaust gas of the internal combustion engine ...

05/31/07 - 20070119153 - Superheated urea injection for aftertreatment applications
An urea SCR system for enhancing internal combustion engine aftertreatment applications includes a supply tank containing aqueous urea, a delivery pump operatively connected to the supply tank and configured for elevating the pressure of aqueous urea drawn from said supply tank. The urea SCR system further includes a conduit arrangement ...

05/31/07 - 20070119152 - Exhaust-gas purification system with particulate filter and method of operation thereof with improved regeneration of the particulate filter
The present invention describes an exhaust-gas purification system for an internal combustion engine made of an oxidation catalyst arranged close to the engine, a subsequent hydrocarbon adsorber and a particulate filter arranged downstream thereof and provided with another oxidation catalyst. The oxidation catalyst ensures that emission limits with respect to ...

05/24/07 - 20070113545 - System for purging sulfate from a nox trap
This system in which the NOx trap (1) is associated with catalyst-forming means (2) integrated in an exhaust line (3) of a vehicle engine (4), and in which the engine is associated with common manifold or “rail” fuel feeder means (7, 8) for feeding it with fuel and adapted, by ...

05/24/07 - 20070113544 - Engine exhaust emission control device and exhaust emission control method
An engine C/U 51 detects an abnormality which has occurred in an engine, and outputs a signal that indicates the occurrence of this abnormality to an SCR-C/U 61. The SCR-C/U 61 increases and decreases the urea water injection quantity corresponding to the abnormality which has occurred. On the other hand, ...

05/10/07 - 20070101703 - Exhaust emission purifying apparatus for engine
An exhaust emission purifying apparatus has a NOx reduction catalytic converter in an exhaust passage of an engine, for purifying nitrogen oxides in the exhaust gas by reduction with urea aqueous solution; an injection nozzle injecting the urea solution toward an exhaust upstream side of the converter in the exhaust ...

05/10/07 - 20070101702 - Exhaust purification apparatus
An exhaust purification apparatus has an engine controller with a storage device that stores information regarding when it is time for regeneration of the filter. The exhaust purification apparatus carries out a regeneration process of the filter based on the information stored in the storage device when the time for ...

05/10/07 - 20070101701 - Method and arrangement for purifying exhaust gas in an internal combustion engine
The invention relates to a method for purifying exhaust gas in an internal combustion engine provided with an LNT (and a particulate matter filter arranged in an exhaust gas conduit of said engine, comprising de-sulfurisation of said LNT and regeneration of said particulate matter filter. The invention comprises the following ...

05/10/07 - 20070101700 - Exhaust gas purification apparatus of engine
For preventing clogging in an injection nozzle for supplying a reducing agent to exhaust gas flow on an upstream side of a reducing catalyst and for improving the efficiency of NOx purification processing, the injection nozzle 14 has a tip end portion 18 provided with a ring shaped protruding ridge ...

04/26/07 - 20070089404 - Nox reduction in lean burn engine exhaust
The nitric oxide (NO) and nitrogen dioxide (NO2) content of lean-burn engine exhaust is beneficially prepared for selective catalytic reduction (SCR) of these oxides to nitrogen by two sidestream additions to the exhaust. An ozone-containing air stream is added to the exhaust to affect oxidation of NO to NO2. And ...

04/26/07 - 20070089403 - Exhaust-gas purification system for the selective catalytic reduction of nitrogen oxides in the lean exhaust gas of internal combustion engines and method of exhaust-gas purification
The present invention relates to an exhaust-gas purification system for the selective catalytic reduction of nitrogen oxides. The system includes at least one catalyst having catalytically active components for the selective catalytic reduction (SCR components). An NOx storage catalyst (5) is arranged upstream of the SCR catalyst (3) in the ...

04/12/07 - 20070079602 - Thermal management of hybrid lnt/scr aftertreatment during desulfation
In an exhaust aftertreatment system comprising a NOx adsorber-catalyst followed by an SCR catalyst, means are provided for preventing the SCR catalyst from becoming heated to near the same peak temperatures as the NOx adsorber-catalyst during desulfation. In one embodiment, the means is a thermal mass between the NOx adsorber-catalyst ...

04/12/07 - 20070079601 - Engine control apparatus and engine operating method
When an abnormality occurred in a SCR device is detected, the output of an engine is restricted. To this end, in one embodiment, at the time of an abnormality occurrence, a map adopted for calculating a fuel injection quantity is switched from that for a normal time (S407). Further, as ...

04/05/07 - 20070074506 - Engine system arrangement with on-board ammonia production and exhaust after treatment system
An engine system includes first and second combustion chamber groups that supply exhaust to respective first and second exhaust passages. NOx in the exhaust of the first combustion group is converted to ammonia, such as by enriching the exhaust with fuel and then passing the mixture over an appropriate catalyst. ...

03/29/07 - 20070068144 - Reducing agent reforming device and exhaust gas control system using the same
A reforming device includes a reforming part that subjects a hydrocarbon-based raw material to be reformed to a reforming reaction to form a reducing agent to be supplied to a reducing catalyst for reducing nitrogen oxide selectively. The reforming part has a reforming reaction region through which the raw material ...

03/29/07 - 20070068143 - Method and apparatus for regeneration of engine exhaust aftertreatment devices
An improved method and apparatus for providing reformate into an engine exhaust stream including aftertreatment devices such as a particulate trap and an NOx filter regenerable by hydrogen-rich reformate injected into the engine exhaust ahead of the aftertreatment devices. A pump pressurizes a hydrocarbon catalytic reformer, and a three-way valve ...

03/22/07 - 20070062180 - Combustion engine including exhaust purification with on-board ammonia production
Engines and methods of controlling an engine may include producing ammonia from exhaust gas and using the ammonia to reduce certain emission components of the exhaust. Timing of valve closing/opening and use of an air supply system may enable engine operation according to a Miller cycle. ...

03/15/07 - 20070056268 - Lnt-scr packaging
A power generation system comprises a diesel engine and a fuel reformer configured to receive the engine exhaust. Two or more separate LNT bricks are configured in a parallel valveless arrangement wherein each simultaneously receives a separate portion of the exhaust leaving the fuel reformer. The LNTs are each adapted ...

03/15/07 - 20070056267 - Method for operating an internal combustion engine and device for implementing the method
A method for operating an internal combustion engine in whose exhaust-gas region at least one SCR catalytic converter is disposed, which is acted upon by a reagent contributing to the NOx conversion in the SCR catalytic converter, and a device for implementing the method. The reagent level in the SCR ...

03/08/07 - 20070051097 - Method and apparatus for adding a reactant to an exhaust gas from an internal combustion engine
A method and apparatus for adding a reactant to an exhaust gas from an internal combustion engine is based on the principle of dividing the exhaust gas stream into an inner exhaust gas flow and an outer exhaust gas flow, which radially surrounds the inner exhaust gas flow. A swirl ...

03/08/07 - 20070051096 - Method of removing nitrogen oxides from the exhaust gas of a lean-burn internal combustion engine and exhaust-gas purification system therefor
The present invention relates to a method of removing nitrogen oxides from the exhaust gas of a lean-burn internal combustion engine by selective catalytic reduction (SCR) using ammonia. The exhaust gas is routed first over a platinum-containing pre-catalyst and then over an SCR catalyst. The ammonia needed for the selective ...

03/01/07 - 20070044453 - Parasitic load control system for exhaust temperature control
A parasitic load control system is provided. The system may include an exhaust producing engine and a fuel pumping mechanism configured to pressurize fuel in a pressure chamber. The system may also include an injection valve configured to cause fuel pressure to build within the pressure chamber when in a ...

02/15/07 - 20070033928 - Hybrid catalyst system for exhaust emissions reduction
One aspect of the invention relates an exhaust treatment system having an SCR reactor following a NOx adsorber. Syn gas is used to regenerate the NOx adsorber. Another aspect relates to an LNT/SCR provided with an ammonia source separate from the LNT. A further aspect relates to a system comprising ...

02/15/07 - 20070033927 - Automotive diesel exhaust hc dosing valve
A dosing valve assembly is disclosed for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve assembly comprises a control valve coupled to a source of the reducing agent, a reducing agent delivery valve constructed and arranged for coupling ...

02/08/07 - 20070028602 - Methods and systems for controlling internal combustion engines
Described here are systems and methods for controlling IC engines. In one aspect, a method for controlling a fuel processor is provided, the method including i) determining a temperature of an exhaust flow to the fuel processor, the fuel processor including a fuel processor catalyst; ii) determining a concentration of ...

02/08/07 - 20070028601 - Device and method for exhaust gas aftertreatment
The exhaust gas aftertreatment device according to the invention having a reforming unit for generating hydrogen by steam reforming, partial oxidation of hydrocarbons and/or mixed forms thereof is distinguished by the fact that the reforming unit is arranged directly in the main exhaust gas stream from an internal combustion engine. ...

02/01/07 - 20070022745 - Fuel supply system and fuel supply method for exhaust purifying catalyst device in internal combustion engine
Cylinder heads are each provided with a fuel injection valve, and an addition nozzle for adding fuel for activating an exhaust purifying catalyst to an exhaust manifold. There exists a non-exhaust period in which an exhaust gas does not flow out to exhaust passages from the exhaust manifolds during an ...

02/01/07 - 20070022744 - System and method for directing fluid flow
In one embodiment, a flow switch can comprise: a deflector having a diverging upstream portion; an aperture located in a downstream portion of the deflector; and a divider disposed downstream of the deflector. The deflector can be capable of diverting a fluid stream that contacts the upstream portion, around the ...

02/01/07 - 20070022743 - Method and apparatus for bubble injection of agent into exhaust gas for use with emission abatement device
An apparatus comprises an exhaust system and an injection system. The injection system is configured to vaporize a first liquid portion of an agent into at least one bubble so as to inject a second liquid portion of the agent into the exhaust system by use of the at least ...

01/25/07 - 20070017216 - Control device and control method to exhaust purification device
A control device of an exhaust purification device is provided with a plurality of addition valves that supply an additive pressure-fed from a pump, to exhaust purification catalysts separately from each other. As for addition valves constituting the plurality of addition valves the addition period of at least one addition ...

01/25/07 - 20070017215 - Hybrid technology for lean nox trap and particulate filter regeneration control
A method for the use of hybrid technology to control lean NOx trap (LNT) and particulate filter regenerations using an electric motor wherein for the LNT (a) the electric motor is adapted to absorb torque excursions of the engine during regeneration of the LNT, (b) wherein the electric motor is ...

01/25/07 - 20070017214 - System for assisting in the regeneration of depollution means integrated into an exhaust line of a motor vehicle diesel engine
A system in which the depollution means (1) are associated with oxidation catalyst-forming means (2), and the engine (4) is associated with common manifold means (7) for feeding it with fuel, and adapted to implement a regeneration strategy in at least one operation of post-injecting fuel into the cylinders, is ...

01/18/07 - 20070012032 - Hybrid system comprising hc-scr, nox-trapping, and nh3-scr for exhaust emission reduction
An exhaust aftertreatment system is provided with a first SCR catalyst, a NOx adsorber-catalyst, and an ammonia-SCR catalyst. The first catalyst is generally a hydrocarbon-SCR catalyst, but can be a carbon monoxide-SCR catalyst or a hydrogen-SCR catalyst. The first catalyst is functional to reduce NOx in lean exhaust using the ...

01/11/07 - 20070006575 - Exhaust gas purifying device for an internal combustion engine
An exhaust gas purifying device according to the present invention has an exhaust emission control catalyst provided in an exhaust passage of an internal combustion engine, a reducing agent adding unit provided in the exhaust passage at a position upstream of the exhaust emission control catalyst for adding a reducing ...

01/04/07 - 20070000240 - Exhaust emission purifying apparatus for engine
An exhaust emission purifying apparatus for an engine having: a reduction catalytic converter disposed in an exhaust system of the engine, for reductively purifying nitrogen oxides in the exhaust emission with a reducing agent; an injection nozzle for injection-supplying the reducing agent to an exhaust upstream side of the reduction ...

01/04/07 - 20070000239 - Method and system for regeneration of a catalyst
The disclosed embodiments relate to a method and system for regeneration of a catalyst. The system includes an engine that creates an exhaust stream and a fuel supply adapted to supply a fuel stream to the engine. A reactor includes a catalyst and is in fluid communication with the engine ...

01/04/07 - 20070000238 - Enhanced post injection control system for diesel particulate filters
A post injection control system for regulating diesel particulate regeneration of a diesel particulate filter (DPF) with a diesel engine includes a mass airflow sensor that generates a mass airflow signal. A temperature sensor senses the temperature of exhaust and generates an exhaust temperature signal. And a control module commands ...

12/28/06 - 20060288691 - Exhaust after-treatment system with in-cylinder addition of unburnt hydrocarbons
Certain exhaust after-treatment devices, at least periodically, require the addition of unburnt hydrocarbons in order to create reductant-rich exhaust conditions. The present disclosure adds unburnt hydrocarbons to exhaust from at least one combustion chamber by positioning, at least partially within a combustion chamber, a mixed-mode fuel injector operable to inject ...

12/21/06 - 20060283178 - Exhaust emission purifying apparatus for and exhaust emission purifying method of internal combustion engine
A particulate filter 8 is disposed in an exhaust passage 7 of an internal combustion engine 1, and a reduction catalyst 9 is disposed downstream of the particulate filter 8. A bypass passage 12 for bypassing the reduction catalyst 9 and a flow path switching valve 13 which switches a ...

12/21/06 - 20060283177 - Apparatus, system, and method for intermittently delivering fluid
An apparatus, system, and method are disclosed for intermittently delivering fluid. An injector intermittently delivers a first quantity of fluid over a first time interval. In one embodiment, the injector is passively cooled. In a certain embodiment, the injector delivers the first quantity of fluid responsive to a fluid flow ...

12/21/06 - 20060283176 - Method and apparatus for regenerating a nox trap and a particulate trap
An apparatus comprises an emission abatement device and a ratio oscillator. The emission abatement device comprises a NOx trap and a particulate trap. The ratio oscillator is configured to oscillate a ratio of the oxygen content and regenerative agent content of a flow advanced to the emission abatement device so ...

12/21/06 - 20060283175 - Continuous reforming of diesel fuel for nox reduction
Raw diesel fuel is reformed to produce partially oxygenated hydrocarbons in the liquid fuel by use of a nonthermal plasma reactor. The reformed diesel fuel is formed by passing a stream of air plasma bubbles through a liquid volume of diesel fuel to strip low molecular weight hydrocarbons from the ...

12/14/06 - 20060277899 - Method and system to automatically drain and dispose of accumulated water from water/fuel separators in diesel
A method and system are provided for removing water/fuel mixture from a water/fuel separator. The method injects the water/fuel mixture is injected into an exhaust aftertreatment device where the fuel portion of such mixture is burned and converted into water and carbon dioxide. The water/fuel mixture is injected as a ...

12/14/06 - 20060277898 - Lnt regeneration strategy over normal truck driving cycle
Partial denitrations are made practical by an SCR catalyst placed downstream of a NOx adsorber. The SCR catalyst permits partial denitrations to be extended to where a favorable fuel penalty rate presented by driving conditions can be utilized to a sufficient extent that the benefit of the favorable conditions is ...

12/14/06 - 20060277897 - Nox reduction system and method
A system for reduction of noxious oxides from an exhaust of an internal combustion engine. The internal combustion engine includes an engine exhaust. A NOx catalytic reactor has at least one inlet in communication with the engine exhaust. A reductant catalytic reactor includes an inlet in communication with a reductant ...

12/07/06 - 20060272318 - Exhaust gas purification device for internal combustion engine
By performing main fuel injection and sub fuel injection to perform rich operation of an engine, NOx purging of a NOx catalyst is carried out, and in the NOx purging, the ratio between the main fuel injection quantity and the sub fuel injection quantity is variably determined, within the range ...

12/07/06 - 20060272317 - Exhaust treatment diagnostic using a temperature sensor
A method of monitoring operation of a dosing system for treating exhaust of an engine includes monitoring a downstream temperature of an exhaust downstream of the dosing system and injecting a dosing agent. A control module determines a temperature differential threshold based on an amount of dosing agent injected and ...

11/23/06 - 20060260297 - Exhaust aftertreatment system and method of use for lean burn internal combustion engines
The present invention is an aftertreatment system for lean burn internal combustion engines. The present invention provides a multiple branch lean NOx trap, or LNT, with a diverter valve operable to selectively direct lean exhaust flow to one portion of the LNT while another portion of the LNT regenerates in ...

11/23/06 - 20060260296 - Method for remediating emissions
A method for remediating an emission containing NOx emissions includes introducing an exotherm generating agent into the NOx emissions when the inlet temperature of the NOx emissions is in a range of 300° C. to 600° C. and an air/fuel ratio is greater than or equal to 15; exposing the ...

11/16/06 - 20060254260 - Method and apparatus for piezoelectric injection of agent into exhaust gas for use with emission abatement device
An apparatus comprises an exhaust gas system and a piezoelectric device. The piezoelectric device is configured to inject an agent into the exhaust gas system for delivery to an emission abatement device of the exhaust gas system. An associated method is disclosed. ...

11/16/06 - 20060254259 - System and method for reducing nox emissions in an apparatus having a diesel engine
A method of operating a diesel engine in a mechanical apparatus is disclosed, wherein the diesel engine includes a combustion chamber, and wherein the mechanical apparatus also including a catalyst configured to treat NOx emissions from the diesel engine. The method includes performing at least one early homogenization combustion in ...

11/16/06 - 20060254258 - Exhaust system for lean burn ic engines
An exhaust system (10) for a lean-burn internal combustion engine comprises a nitrogen oxide (NOX) absorbent (28), a catalyst (30) for catalysing the selective catalytic reduction (SCR) of NOX with a NOX specific reactant, first means (18, 22) for introducing a NOX specific reactant or a precursor thereof into an ...

11/09/06 - 20060248881 - System for injecting fuel into diesel engine exhaust pipe
Disclosed is a system for injecting fuel into a diesel engine exhaust pipe that prevents injected fuel from adhering to an exhaust pipe inner wall, adequately reduces and regenerates an exhaust gas purification catalyst, and remarkably increases fuel efficiency. This system includes a plurality of fuel injection nozzles, which are ...

11/09/06 - 20060248880 - Exhaust gas purification apparatus for engine
An exhaust gas purification apparatus of an engine having a reduction catalytic converter arranged in an engine exhaust gas system, for reducing and purifying nitrogen oxide by a liquid reducing agent, a reducing agent supply device controlling a flow rate of a liquid reducing agent that is supplied to the ...

11/09/06 - 20060248879 - Additional system for assisting regeneration of pollution control means of a motor vehicle
This system, in which the engine is associated with a turbocharger and with a feed device adapted to implement first and second regeneration strategies depending on different engine operation control parameters to obtain different temperatures in the exhaust line, acquires the temperature in the line, compares it with a safety ...

11/02/06 - 20060242949 - Fuel fractionation method and fuel fractionation apparatus for internal combustion engine
A fuel fractionation method which can suitably control a state of a fuel at a time of fractionating the fuel in an internal combustion engine, which comprises the steps of applying an operation for promoting a fractionation of a fuel of an engine to a fractionation passage while making the ...

10/26/06 - 20060236681 - Exhaust emission purifying apparatus for engine
In order to suppress deposition of constituent of a reducing agent (dissolved matter) in an exhaust passage of an engine enhancing an elimination rate of NOx even when temperature of an exhaust emission from the engine is low, an exhaust emission purifying apparatus is provided with an electro-generative-heat carrier provided ...

10/26/06 - 20060236680 - Method for regenerating a diesel particulate filter
A method is disclosed for regenerating a diesel particulate filter without excessively increasing NO2 emissions. The system includes a fuel delivery device, an oxidation catalyst, and a diesel particulate filter. During a first operational mode, the fuel injection device injects a relatively smaller amount of fuel into the exhaust stream ...

10/26/06 - 20060236679 - Exhaust gas aftertreatment device for diesel engines of vehicles, preferably passenger cars
An exhaust gas after treatment device for a diesel engine of a vehicle has at least one injection valve with an injection nozzle through which an exhaust gas treatment medium is injected into an exhaust pipe. At least one pump is provided that conveys the exhaust gas treatment medium to ...

10/19/06 - 20060230748 - System and methods for improved emission control of internal combustion engines using pulsed fuel flow
The present invention provides systems and methods to improve the performance and emission control of internal combustion engines equipped with nitrogen oxides storage-reduction (“NSR”) emission control systems. The system generally includes a NSR catalyst, a fuel processor located upstream of the NSR catalyst, and at least one fuel injection port. ...

10/12/06 - 20060225407 - Exhaust gas purifier for internal combustion engine
The exhaust gas purifier includes a fuel addition valve, an NOx catalytic converter, and a catalyst loaded PM filter. The catalyst temperature of catalyst loaded PM filter is increased to a target temperature by adding fuel to the exhaust gas from fuel addition valve, whereby PM trapped on the filter ...

10/12/06 - 20060225406 - Exhaust gas purifying apparatus and method thereof
An exhaust gas purifying apparatus provided in an exhaust passage connected with an engine includes an upstream catalyst that is provided in the exhaust passage, and that removes NOx; a downstream catalyst that is provided downstream of the upstream catalyst in the exhaust passage; and a supply device that supplies ...

10/05/06 - 20060218900 - Motor vehicle with a cryotank
A motor vehicle, which has a cryotank for supplying an internal combustion engine, includes an exhaust gas system including an exhaust gas catalyzer, a device for the combustion of boil-off gas from the cryotank, a gas duct, and a nozzle. The nozzle is configured to introduce the boil-off gas in ...

09/28/06 - 20060213188 - Regeneration controller for exhaust purification apparatus of internal combustion engine
A regeneration controller that prevents overheating when performing burn-up heating for completely burning particulate matter by intermittent fuel addition to an exhaust system or intermittent increase of fuel addition to the exhaust system. The regeneration controller includes first and second exhaust temperature sensors (44, 46), each detecting the exhaust temperature ...

09/28/06 - 20060213187 - System and method of nox abatement
A NOx abatement system comprising: a first NOx adsorber (18) capable of being disposed in-line and downstream of and in fluid communication with an engine (12); a selective catalytic reduction catalyst (20) disposed in-line and downstream of and in direct fluid communication with the first NOx adsorber (18), wherein the ...

09/21/06 - 20060207243 - Emission control system
A method and apparatus to reduce the emissions of an exhaust stream is provided. One feature of the present invention includes a control unit for metering a reagent into the exhaust strean. The control unit adjusts a quantity of the reagent to be metered into the exhaust stream. One embodiment ...

09/21/06 - 20060207242 - Lightweight engine
Weight saving of industrial engines. Making pollution-causing material harmless. Improvement in thermal efficiency and reduction of operating cost. Arrangement To produce compressed air, air is pressurized by a turbo charger or a super turbo charger and stored in an air tank. The air is fed, at an optimum temperature and ...

09/14/06 - 20060201139 - Emission abatement systems and methods
An emission abatement assembly includes a fuel reformer which supplies reformate gas to a catalyst. Exhaust gas from an internal combustion engine is advanced through the catalyst and into a downstream SCR catalyst. ...

09/07/06 - 20060196172 - Injection device for the treatment of exhaust fumes from motor vehicles
A device for injecting at intermittent periods a dispersion of a liquid at controlled pulsing periods into exhaust fumes of a combustion engine, said liquid contains a component which reacts with a component of the exhaust fumes at a catalytic converter, said device comprises a housing containing a first chamber ...

09/07/06 - 20060196171 - Injection nozzle assembly and fuel cell system having the same
An injection nozzle assembly for a fuel cell system, the injection nozzle assembly including a housing defining a fuel chamber to accommodate hydrogen-containing fuel therein and coated with a reforming catalytic layer. An inlet is provided in a first side of the housing to introduce the hydrogen-containing fuel in the ...

09/07/06 - 20060196170 - Method for operating an internal combustion engine and device for executing the method
A method for operating an internal combustion engine, in whose exhaust gas system an exhaust gas treatment device is positioned, a reagent, which is possibly mixed with compressed air, being introduced into the exhaust gas system upstream from the exhaust gas treatment device, and a device for performing the method. ...

09/07/06 - 20060196169 - Exhaust gas purification system of an internal combustion engine and method for purifying the exhaust gases thereof
An exhaust gas purification system for purifying the exhaust gas of an internal combustion engine, especially an internal combustion engine featuring auto-ignition and/or direct fuel injection, is provided. The system includes at least one oxidation catalytic converter disposed in an exhaust gas duct of the internal combustion engine, at least ...

08/31/06 - 20060191254 - Exhaust gas mixing system
A system for mixing exhaust gas components is provided. The system may include an exhaust passage and a substantially enclosed distribution chamber disposed within the exhaust passage. The distribution chamber may include an outer wall defining a chamber volume and at least one opening disposed in the outer wall configured ...

08/17/06 - 20060179821 - Regeneration control for diesel particulate filter for treating diesel engine exhaust
A method and system for controlling exhaust gas temperature at a diesel particulate filter during regeneration. The temperature rise is controlled at a rate that will prevent harm to the filter caused by high temperatures and rapid increases. ...

08/10/06 - 20060174608 - Mechanism and method of combined fuel reformer and dosing system for exhaust aftertreatment and anti-idle sofc apu
The invention relates to a power generation system with a continuously operating fuel reformer. Preferably, the fuel reformer is either off, warming up, or operating with an essentially constant fueling rate. Some of the reformed fuel is intermittently used to regenerate a NOx trap that treats the exhaust of an ...

07/06/06 - 20060144038 - Internal combustion engine having an exhaust particulate filter
A control unit prevents overheating of a particulate filter in an exhaust path of an internal combustion engine during regeneration of the particulate filter if the regeneration deviates from prescribed conditions. Overheating is prevented using one of two engine operations: a first operation with a relatively lower exhaust temperature and ...

06/29/06 - 20060137329 - Filter desulfation system and method
A method of removing sulfur from a filter system of an engine includes continuously passing an exhaust flow through a desulfation leg of the filter system during desulfation. The method also includes sensing at least one characteristic of the exhaust flow and modifying a flow rate of the exhaust flow ...

06/29/06 - 20060137328 - Exhaust purification method and exhaust purification apparatus of internal combustion engine
In an internal combustion engine, an exhaust passage is provided with a NOx storing and decomposing catalyst (20). When burning fuel under a lean air-fuel ratio, the nitrogen monoxide is adsorbed by the NOx storing and decomposing catalyst (20) and disassociated. At this time, the disassociated oxygen is held in ...

06/22/06 - 20060130462 - Process for the catalytic nox reduction of a thermal engine, and device for said purpose
In a process for the catalytic NOx reduction in oxygen-containing exhaust gases of a thermal engine in one or several reduction catalytic converters, hydrocarbons of the fuel of the thermal engine are used in the reduction catalytic converter(s). In order to avoid toxic or dangerous substances and gases, respectively, during ...

06/22/06 - 20060130461 - Method for controlling injection of reducing agent in exhaust gas from a combustion engine
The invention relates to a method for controlling injection of a reductant into a NOx containing exhaust gas stream from a combustion engine, where combustion of a known fuel takes place and where the HOx is reduced by selective catalytic reduction, SCR, in the presence of a SCR catalyst, comprising ...

06/22/06 - 20060130460 - Method and system for regeneration of a particulate filter
Method, system, and controller for regeneration a particulate filter as a function of fuels emitted with exhaust gases from an engine to an oxidation catalyst. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates that are captured by the particulate filter. ...

06/22/06 - 20060130459 - Method and system for controlling temperatures of exhaust gases emitted from internal combustion engine to facilitate regeneration of a particulate filter
Method, system, and controller for controlling exhaust gas temperatures by adjusting exhaust valve timing and/or fueling for one or more cylinders wherein normal operating cylinders receive additional fuel to compensate for the adjusted cylinders, thereby increasing exhaust gas temperatures. The method, system, and controller may be applicable in systems having ...

06/22/06 - 20060130458 - System for controlling the urea supply to scr catalysts
A reductant dosing control system, for use in a Selective Catalytic Reduction (SCR) system of a motor vehicle includes an input receiving a NOx feedback signal from an NOx sensor provided to the SCR system. A base dosing module calculates a required quantity of reductant to inject in front of ...

06/15/06 - 20060123771 - Reductant distributor for lean nox trap
A lean NOx trap operating in a lean NOx exhaust stream is progressively regenerated, sector to sector, for efficient operation of the trap and conservation of reducing gas used in the regeneration. A reductant gas distributor is inserted in the exhaust upstream of the trap. Reductant gas is carried into ...

06/08/06 - 20060117741 - Method for after treatment of exhaust gases, and exhaust gas after treatment array
A method and an apparatus for posttreatment of the exhaust gases of an internal combustion engines in which nitric oxides contained in the exhaust gas can be selectively catalytically reduced, and a first auxiliary agent kept on hand can be delivered to the exhaust gas, and means are provided for ...

06/01/06 - 20060112681 - Exhaust emission control device of internal combustion engine
An exhaust emission control device of an internal combustion engine includes a fuel supply unit provided in a fuel supply passage, for supplying a reducing agent directly to a NOx trap catalytic converter; an addition pressure detection unit for detecting the supply pressure of the reducing agent supplied by the ...

05/25/06 - 20060107655 - Exhaust system
The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having an exhaust line carrying exhaust gas away from the internal combustion engine and having a fuel injector for injecting fuel into the exhaust line. The fuel injector is mounted on ...

05/25/06 - 20060107654 - Method and apparatus for reducing pollutants in engine exhaust
A transmural catalysis device allows for conversion of NOx into N2 in internal combustion engine exhaust. A reducing gas is delivered into exhaust tubes through a plurality of pores or channels in the walls of the exhaust tubes either continuously or periodically. Also disclosed are methods using the device for ...

05/25/06 - 20060107653 - Exhaust gas purification device for an internal combustion engine and exhaust gas purification method for an internal combustion engine
An internal combustion engine with an exhaust gas purification device is provided in which the NOx held in a NOx catalyst can be efficiently reduced and purified, and a sufficient amount of NOx can be reduced, thereby making it possible to regenerate the NOx catalyst over a wide range thereof. ...

05/25/06 - 20060107652 - System for assisting regeneration of a storage/releasing nox trap for a motor vehicle diesel engine
A system for assisting regeneration of a storage/release NOx trap integrated in an exhaust line (5) of a motor vehicle diesel engine (4) is characterized in that it comprises gas admission means for admitting gas into the engine, means for injecting fuel (11) into the cylinders thereof in the form ...

05/18/06 - 20060101811 - Reducing agent metering system for reducing nox in lean burn internal combustion engines
A reducing agent metering system for delivering reducing agent to a lean burn internal combustion engine. The reducing agent metering system includes a metering system housing, a system for metering vaporized reducing agent to the internal combustion engine, the system positioned within the metering system housing and a system for ...

05/18/06 - 20060101810 - System for dispensing fuel into an exhaust system of a diesel engine
A system is disclosed for dispensing fuel into the transient flow of an exhaust system to control exhaust emissions. A controller initiates the delivery of fuel into the exhaust when an emissions control device, such as a diesel particulate filter, requires increased exhaust temperatures for regeneration. In operation, pressurized fuel ...

05/18/06 - 20060101809 - Internal combustion engine comprising a reducing agent production unit and operating method therefor
An internal combustion engine with a reducing agent-generating unit for generation of an H2-containing and/or NH3-containing reducing gas, which can be added to an exhaust gas line upstream from an NOx reducing catalytic converter, and a procedure for the operation of such an internal combustion engine are proposed. The reducing ...

05/11/06 - 20060096278 - Method for operating an internal combustion engine and a device for carrying out the method
A method for operating an internal combustion engine whose exhaust area has at least one SCR catalytic converter and a device for carrying out the method are described. The SCR catalytic converter receiving the reagent supports the conversion of the raw NOx emission of the internal combustion engine. At least ...

05/11/06 - 20060096277 - Lean burn engine control nox purging based on positional loading of oxidants in emission control device
Disclosed is a method for controlling a lean burn engine coupled to an emission control device that stores oxidants during lean operation, and reacts the stored oxidants during stoichiometric or rich operation, the method comprising estimating amounts of NOx stored in the device along a plurality of axial positions of ...

05/11/06 - 20060096276 - Mechanical apparatus having a catalytic nox storage and conversion device
A mechanical apparatus including a combustion engine, a conduit for transporting an exhaust stream away from the engine, a first catalytic NOx storage and conversion region disposed along the conduit, and a second catalytic NOx storage and conversion region disposed along the conduit at a location downstream from the first ...

05/11/06 - 20060096275 - Exhaust purification with on-board ammonia production
A power source is provided for use with selective catalytic reduction systems for exhaust-gas purification. The power source includes a first cylinder group with a first air-intake passage and a first exhaust passage, and a second cylinder group with a second air-intake passage and a second exhaust passage. The second ...

05/11/06 - 20060096274 - Method for the post-injection of hydrocarbon-, alcohol- and/or reducing-agent-type regeneration solution (e.g. diesel fuel and/or urea and/or ammoniacal solution) for the regeneration of diesel engine exhaust gas filtration systems
A post-injection method for the regeneration of a device used to filter diesel engine exhaust gases. The method includes injecting a fully-pulverised hydrocarbon-, alcohol- and/or reducing-agent-type regeneration solution upstream of the oxidation catalyst (14) to increase the exhaust gases' temperature upon detection of clogging of the filter with particles. A ...

04/27/06 - 20060086084 - Method for operating an exhaust-gas treatment device of an internal combustion engine, and device for carrying out the method
A method for operating an exhaust-gas treatment device of an internal combustion engine and a device for carrying out the method, in which a reagent, whose pressure is measured by a reagent pressure sensor, is introduced into the exhaust-gas area upstream from the exhaust-gas treatment device. First the reagent pressure ...

04/27/06 - 20060086083 - In-cylinder method for air/fuel ratio control
The invention relates to a Method of purging a lean NOx trap (LNT) coupled downstream of a direct injection internal combustuion engine with post injection for achieving a purge air/fuel (A/F) ratio. At least two separate post injections are applied in the expansion stroke after a main injection train, so ...

04/27/06 - 20060086082 - Method for the post-treatment of exhaust gases by subsequent injection of fuel in a diesel-type internal combustion engine provided with a pre-catalyst and a particulate filter
A process is proposed for exhaust gas aftertreatment by afterinjection of fuel in a diesel internal combustion engine with a precatalyst and a particulate filter, in which process the afterinjection NE is performed as a function of the temperature in the area of the precatalyst Tcat and of the state ...

04/20/06 - 20060080953 - Method for regenerating a particle trap and exhaust system
An exhaust system purifies a gas flow of harmful substances. The exhaust system contains at least device for supplying a reducing agent, a first catalytic converter, and a particle trap, in the direction of flow of the gas flow through the exhaust system. At least one other exhaust purification component ...

04/20/06 - 20060080952 - Method for operating an internal combustion engine and a device for carrying out the method
A method for operating an internal combustion engine; in the exhaust area of this engine there is at least one catalytic converter and downstream from the catalytic converter there is an NOx sensor. A device for carrying out this method is also provided. The NOx sensor has a cross-sensitivity to ...

04/13/06 - 20060075743 - Exhaust treatment systems and methods for using the same
In one embodiment, an exhaust treatment system comprises a selective catalytic reduction device, an off-line reformer disposed in selective fluid communication with and upstream of the selective catalytic reduction device, and a plasma reactor disposed downstream of and in fluid communication with the off-line reformer, and disposed upstream of and ...

04/13/06 - 20060075742 - Reducing nox emissions with a staged catalyst
The conversion of NOx to nitrogen in the exhaust of a lean burn engine using a hydrocarbon assisted-selective catalytic reduction system is benefited by a two-stage oxidation catalyst-reduction catalyst SCR reactor. The character and quantity of the oxidation catalyst is managed to just activate the hydrocarbon reductant at low temperatures ...

04/06/06 - 20060070373 - Method for the simultaneous desulfation of a lean nox trap and regeneration of a diesel particulate filter
High exhaust gas temperatures whereby sulfur is removed from a lean NOx traps simultaneously with regeneration of a Diesel particulate filter is provided by alternating engine operation in respectively defined lean and rich combustion modes. The duration and frequency of the respective lean and rich operating modes, as well as ...

03/30/06 - 20060064969 - Exhaust purification device of compression ignition type internal combustion engine
An SOx trap catalyst (11) able to trap SOx contained in exhaust gas is arranged in an engine exhaust passage upstream of an NOx storing catalyst (12). When the SOx trap rate by the SOx trap catalyst (11) falls, the air-fuel ratio of the exhaust gas flowing into the SOx ...

03/23/06 - 20060059897 - Internal combustion engine fuel supply system
A system to supply hydrogen-rich fuel to an internal combustion engine, whereby a hydrogen-rich gas is produced from a liquid raw fuel by a hydrogen generator. The exhaust line of the internal combustion engine contains an exhaust purification system, such as a DeNOx catalytic converter, which is at least temporarily ...

03/23/06 - 20060059896 - Internal combustion engine exhaust treatment having a single valve directing exhaust to dual nox traps
A single valve (23, 50) directs engine exhaust (11, 12) toward alternative NOx traps (19, 20) which are adjacent to either diesel particulate filters (40, 41) or low temperature water gas shift catalysts (63, 64). Syngas is either provided from a source (54) or by in-line catalytic partial oxidizers (23, ...

03/16/06 - 20060053777 - System and method for increasing the temperature of gases within an exhaust of an internal combustion engine
Reformate gas is supplied into the exhaust 4 of an internal combustion engine 2 at a location upstream of an oxidation catalyst 6 and an ignition source 14 is provided either upstream or downstream of the oxidation catalyst and upstream of further exhaust gas treatment devices 8 for igniting the ...

03/16/06 - 20060053776 - Management of thermal fluctuations in lean nox adsorber aftertreatment systems
A method and apparatus manage heat in exhaust gas in an aftertreatment system that employs a lean NOx adsorber. A de-sulfation hot line and cooling line are employed to control exhaust gas temperatures for adsorption, regeneration and de-sulfation cycles of the aftertreatment system where each cycle can require different chemical ...

03/16/06 - 20060053775 - High thermal efficiency selective catalytic reduction (scr) system
An emissions control system utilizes otherwise wasted heat to efficiently reduce emissions in a main exhaust flow. Heat stored in exhaust from an auxiliary generator (i.e., auxiliary exhaust) may be used to convert urea to ammonia used by a Selective Catalytic Reducer (SCR) system, and/or the auxiliary exhaust may be ...

03/16/06 - 20060053774 - Exhaust treatment system and methods using the same
An exhaust treatment system comprises an exhaust fluid source; a particulate filter disposed downstream of and in fluid communication with the exhaust fluid source; a valve disposed downstream of and in fluid communication with the particulate filter; and a reformer disposed in fluid communication with and downstream of the valve ...

03/16/06 - 20060053773 - Exhaust-gas cleaning system for an internal combustion engine, and method for cleaning the engine exhaust gases
An exhaust-gas cleaning system for cleaning the exhaust gas of an internal combustion engine with self ignition and/or with direct fuel injection has at least one oxidizing catalytic converter, disposed in an exhaust conduit of the engine, and has at least one device, disposed downstream of the oxidizing catalytic converter ...

03/09/06 - 20060048503 - Device for clearing a supply pipe of a reducing agent that has previously gone from a first phase to a second phase then back again
In a device for keeping a valve controlled flow passage for supplying a reduction agent to a catalytic converter in an exhaust system of a diesel engine, wherein the reduction agent is gaseous above a certain temperature but solid below this temperature, the valve being a control valve for dosing ...

03/09/06 - 20060048502 - Integrated system for reducing fuel consumption and emissions in an internal combustion engine
An integrated NOx after-treatment system for an internal combustion engine includes (a) a fuel supply subsystem for supplying an inlet fuel stream to the engine fuel intake, (b) an air supply subsystem for supplying an inlet oxygen-containing air stream to the engine air intake, (c) a fuel processor to which ...

03/09/06 - 20060048501 - Catalytic device with internal heat exchange
The invention relates to a catalytic device with internal heat exchange that among other things can be used for vehicles with an internal combustion engine or for stationary engines where there is a certain amount of unburned gas components in the exhaust that can be converted in the catalyst. By ...

03/02/06 - 20060042236 - Method and apparatus for controlling exhaust gas flow rate
An exhaust emissions control system includes a valve in an exhaust stream portion of a mainstream exhaust ahead of an aftertreatment element such as a catalytic converter. The valve controls the amount of exhaust flowing into a hydrocarbon reformer. A bi-directional acoustical air meter in the exhaust stream portion ahead ...

03/02/06 - 20060042235 - Rotary nox trap
One aspect of the invention relates to a NOx trapping device for a vehicle exhaust system having a plurality of NOx adsorbers. The device has a mobile framework configured to hold the NOx adsorbers and move them in sequence through a plurality of positions. A manifold channels exhaust to one ...

03/02/06 - 20060042234 - Control system for an engine aftertreatment system
An engine exhaust treatment system using a control system is described. In one form of the present invention, engine exhaust gas contaminates are passed through a selective reduction catalyst and a contaminate reducing agent is injected into the catalyst. The amount of contaminates present in the exhaust proximate to the ...

02/23/06 - 20060037309 - Emission control system
An emission control system is provided for an engine for reducing NOx emissions, the system comprising an ammonia injector, a controller for controlling the ammonia injector and a catalyst, wherein the controller includes a transmitter for transmitting information regarding the amount of ammonia used and the amount of NOx reduced. ...

02/23/06 - 20060037308 - Fuel vaporizing device
Hydrogen-rich reformate gas is produced by a fuel reformer (2) from fuel vapor containing hydrocarbon, which is produced by a fuel vaporizer (6), by means of a partial oxidation reaction and a steam reforming reaction. A fuel injector (8, 9) supplies fuel to the fuel vaporizer (6), and an air ...

02/02/06 - 20060021332 - Exhaust system for an internal combustion engine and a respective operating method
The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, with an exhaust line in which an oxidation catalyst is provided for treatment of the exhaust gases coming from the internal combustion engine. To be able to heat the oxidation catalyst ...

02/02/06 - 20060021331 - Pre-combustors for internal combustion engines and systems and methods therefor
Described here are systems and methods for treating fuel injected exhaust streams. In general, the systems comprise a fuel injector, a pre-combustor, and a fuel combustor. The methods described herein include methods for regenerating a NOx trap or a DPF, and methods for generating a substantially uniform fuel air mixture ...

01/26/06 - 20060016176 - Diesel exhaust aftertreatment device regeneration system
A diesel exhaust aftertreatment device regeneration system includes an exhaust conduit adapted to conduct exhaust gas to an exhaust gas aftertreatment device. The system further includes a low pressure bottom feed fuel injector having an inlet portion fully received within a chamber of an adaptor housing having a lower portion ...

01/19/06 - 20060010859 - Valveless dual leg exhaust aftertreatment system
An exhaust aftertreatment system comprising two or more branches, at least one of which contains a NOx adsorber-catalyst. The branches unite downstream into a trailing conduit that contains an ammonia-SCR catalyst. Ammonia generated by the NOx adsorber-catalyst during regeneration is stored for later use by the SCR catalyst. One advantage ...

01/19/06 - 20060010858 - Exhaust gas treatment system and utility vehicle with an exhaust gas treatment system
In an exhaust gas treatment system and a utility vehicle having an exhaust gas treatment system, the exhaust gas treatment system includes a particle reduction unit, a reducing agent tank and a nitrogen oxide reduction unit of a modular design, wherein the reducing agent tank is arranged between the particle ...

01/19/06 - 20060010857 - Hybrid catalyst system for exhaust emissions reduction
One aspect of the invention relates an exhaust treatment system having an SCR reactor following a NOx adsorber. Syn gas is used to regenerate the NOx adsorber. Another aspect relates to an LNT/SCR provided with an ammonia source separate from the LNT. A further aspect relates to a system comprising ...

01/05/06 - 20060000203 - Method for controlling exhaust gas temperature and space velocity during regeneration to protect temperature sensitive diesel engine components and aftertreatment devices
A method for controlling the temperature and/or space velocity of exhaust gas provides control of the maximum temperature of the exhaust gas to prevent thermal damage to the Diesel engine components and associated aftertreatment devices during regeneration of the aftertreatment devices. The method includes controlling intake and/or exhaust valve opening ...

01/05/06 - 20060000202 - Method for operating a catalytic converter used for purifying the exhaust gas of an internal combustion engine and a device for implementing the method
A method for operating a catalytic converter used for purifying the exhaust gas of an internal combustion engine, and a device for implementing the method, which provide for an open-loop or closed-loop control of the reagent fill level in the catalytic converter to a predefined storage setpoint value. The targeted ...

01/05/06 - 20060000201 - Control method for an exhaust gas purification system and an exhaust gas purification system
Thereby, in the case of the exhaust gas purification system having a DPF apparatus (13), it is possible to prevent a water temperature meter in a driver seat from abnormally rising during the forced regeneration of a DPF (13b) and to prevent a driver from taking the abnormal rise of ...

12/29/05 - 20050284136 - Dosing pump assembly
A dosing pump assembly (9) is provided which is adapted to admix a liquid reducing agent to an exhaust gas flow. The dosing pump assembly includes an assembly housing (12) that houses an electric drive (15), a transmission (16), a membrane pump (17), and control and/or regulating electronics. The assembly ...

12/29/05 - 20050284135 - Feed device for supplying solid urea granules into an ammonia generator arranged within or outside of an exhaust line
A feed device for supplying solid urea granules into an ammonia generator arranged within or outside of an exhaust line for production of ammonia makes possible NOx reduction with the catalytic purification of exhaust of an internal combustion engine, gas turbine, or a burner, whereby the solid urea granules are ...

12/29/05 - 20050284134 - Multistage reductant injection strategy for slipless, high efficiency selective catalytic reduction
One aspect of the invention relates to an exhaust treatment apparatus having an NOx reduction system comprising first and second catalyst beds in series with associated first and second ammonia injectors. The first catalyst bed with its associated ammonia injector preferably targets removing only about 80 to about 95% percent ...

12/15/05 - 20050274108 - Device for supplying ammonia to a reduction catalyst arranged in an exhaust system of an internal combustion engine
In a device for supplying ammonia (NH3) to a reduction catalytic converter arranged in an exhaust system of an internal combustion engine comprising a container for storing a precursor body capable of generating ammonia when heated by a heating device disposed in the container for the thermolytic decomposition of the ...

12/15/05 - 20050274107 - Reforming unvaporized, atomized hydrocarbon fuel
A reformer such as a CPO (18) receives a mix of fuel, moisture and oxygen from a mixing region (21) having an igniter (26, 66), which may include an inert ceramic foam (19), the fuel being provided by an atomizing nozzle (22), thereby avoiding the need for a vaporizer before ...

12/01/05 - 20050262832 - Exhaust gas purification device of internal combustion engine
A catalyst (22) suitable for reduction of the NOx in an exhaust gas by ammonia in the presence of excess oxygen is arranged in the exhaust passage (18, 21) of an internal combustion engine. An aqueous urea solution is fed through a flow control valve (33) to the inside of ...

11/24/05 - 20050257516 - Method and apparatus for regenerating nox adsorbers
In a method of regenerating a NOx adsorber, the NOx adsorber is used to treat exhaust gases created during the combustion of gaseous fuels in general. Methane is introduced into a reformer or exhaust line in which hydrogen generated during reforming is used to regenerate the NOx absorber. ...

11/17/05 - 20050252201 - Method and apparatus for reducing nox emissions
In one embodiment, a reductant system comprises: a high pressure reductant pump in operable communication with a power source, wherein the reductant pump comprises a reductant chamber and is capable of pressurizing reductant to a pressure of greater than or equal to 500 psi; a reductant reservoir in fluid communication ...

11/10/05 - 20050247050 - Adsorption based ammonia storage and regeneration system
One aspect of the invention relates to a device for storing ammonia for use in SCR on board a vehicle. The device comprises an adsorption bed with a high capacity for storing ammonia. The device can be designed to hold a long-lasting charge of ammonia comparable to a urea tank, ...

11/10/05 - 20050247049 - Temperature swing adsorption and selective catalytic reduction nox removal system
The invention relates to systems for removing NOx from exhaust. In one aspect of the invention, after adsorption, an NOx adsorber is isolated from the main exhaust flow and desorption induced by raising the temperature. The desorbed NOx is combined with a reductant and reduced over a catalyst. Preferably, the ...

11/10/05 - 20050247048 - Device and method for aftertreating exhaust gases
A device and method for aftertreating exhaust gases in which a controllable valve is used to introduce a supplementary agent in fluid form into the exhaust system at high pressures. The high-pressure promotes an efficient mixture of the supplementary agent for the aftertreatment with the exhaust gas emerging from the ...

11/03/05 - 20050241299 - Low emission diesel particulate filter (dpf) regeneration
A diesel engine system includes a diesel engine having a first exhaust segment and a second exhaust segment. A filter filters exhaust gas from the first and second exhaust segments. A flow control valve selectively re-circulates a portion of exhaust from the first exhaust segment back into the diesel engine. ...

10/20/05 - 20050229590 - Exhaust gas system
An exhaust gas system for converting harmful substances of an exhaust gas of a mobile internal combustion engine includes at least one reducing agent feed, a catalytic converter, a filter element and an exhaust pipe. The reducing agent feed opens into the exhaust pipe upstream of the filter element, while ...

10/20/05 - 20050229589 - Exhaust gas purifying device for engine
An exhaust gas purifying device for an engine according to the present invention includes a NOx absorbing catalytic converter provided in an exhaust path of the engine, an exhaust light oil adding injector which supplies a reducing agent component into the exhaust path, a control unit which executes the rich ...

10/13/05 - 20050223699 - Bypass controlled regeneration of nox adsorbers
In a method and apparatus for regenerating a lean NOx adsorber, the NOx adsorber treats exhaust gases created during the combustion of gaseous fuels in general. A bypass line maintains a target regeneration flow of exhaust gas through the NOx adsorber during regeneration regardless of operating demands on the engine. ...

10/13/05 - 20050223698 - Exhaust gas cleaning device
An exhaust cleaning device includes a NOx storage reduction catalyst storing NOx when an air-fuel ratio of an inflowing exhaust gas is lean and releasing the stored NOx when the air-fuel ratio of the inflowing exhaust gas is rich; an air-fuel ratio changing unit; a reducing agent supplying unit which ...

10/06/05 - 20050217249 - Exhaust gas purification device of internal combustion engine
A catalyst (22) suitable for reduction of the NOxin an exhaust gas by ammonia in the presence of excess oxygen is arranged in the exhaust passage (18, 21) of an internal combustion engine. An aqueous urea solution is fed through a flow control valve (33) to the inside of the ...

10/06/05 - 20050217248 - Exhaust gas purification device of internal combustion engine
A catalyst (22) suitable for reduction of the NOx in an exhaust gas by ammonia in the presence of excess oxygen is arranged in the exhaust passage (18, 21) of an internal combustion engine. An aqueous urea solution is fed through a flow control valve (33) to the inside of ...

10/06/05 - 20050217247 - Diesel aftertreatment systems
A method for improving NOx conversion efficiency of a NOx-reducing catalyst by determining an accurate amount of reductant required is presented. The method includes calculating an initial reductant injection amount based on a steady state amount of NOx in the engine feedgas and adjusting the initial amount to compensate for ...

09/29/05 - 20050210869 - Device for introducing fuel into an exhaust line
To improve the efficiency of such a device (1), the fuel injector (2) is connected to a coolant circulation system (7) in a manner suitable to transfer heat. ...

09/22/05 - 20050204729 - Exhaust gas purification device of internal combustion engine
A catalyst (22) suitable for reduction of the NOx in an exhaust gas by ammonia in the presence of excess oxygen is arranged in the exhaust passage (18, 21) of an internal combustion engine. An aqueous urea solution is fed through a flow control valve (33) to the inside of ...

09/15/05 - 20050198943 - Method for metering ammonia into the exhaust-gas region of an internal combustion engine and device for implementing the method
A method for metering ammonia into the exhaust-gas region of an internal combustion engine and a device for implementing the method. The ammonia storage capacity of an SCR catalytic converter situated in the exhaust-gas region of the internal combustion engine is utilized. After the internal combustion engine has been switched ...

09/01/05 - 20050188685 - System for providing assistance in regenerating depollution means
The invention provides a system for providing assistance in regenerating depollution means included in an exhaust system of a motor vehicle engine, the system comprising means for controlling the operation of the engine in order to switch the engine between operation in a standard lean mode and operation in a ...

09/01/05 - 20050188684 - Apparatus and method for purifying exhaust gas of internal combustion engine
In an exhaust gas purifying apparatus provided with a lean NOx catalyst supporting a catalyst layer, which contains a NOx trapping component, on a honeycomb substrate formed so as not to cause an alkali attack, the invention prevents trapped NOx from being dissociated and exhausted during the time of a ...

09/01/05 - 20050188683 - Control device of hydrogen engine
There are provided NOx trap catalyst to trap and release NOx based on air-fuel ratio, first fuel supply means for supplying gasoline, second fuel supply means for supplying hydrogen, engine operation detecting means for detecting engine operating condition, fuel ratio changing means for changing the ratio of gasoline and hydrogen, ...

08/18/05 - 20050178110 - Precat-nox adsorber exhaust aftertreatment system for internal combustion engines
The invention provides a NOx adsorber aftertreatment system for internal combustion engines which utilizes at least one precat operatively coupled to at least one NOx adsorber to aid in the regeneration of the NOx adsorber. Fuel is injected into a precat located upstream of a NOx absorber producing heat, H2O, ...

08/11/05 - 20050172617 - Method for the regeneration of a particle filter, and a vehicle in which such a method is utilized
A system and method for the regeneration of a particle filter (13) arranged downstream from a catalyzer unit (14) in an exhaust canal (10) arranged to an internal combustion engine (2), where the internal combustion engine (2) is arranged to assume a first operational mode (60) in which a driving ...

08/11/05 - 20050172616 - Device for the purification of exhaust gases consisting of fluorine-containing compounds in a combustion reactor
Exhaust gases from CVD and plasma processes contain toxic pollutants, particularly fluorine-containing compounds, and must therefore be purified. In a device for the purification of exhaust gases, frequently one comprising a combustion chamber and a fuel gas flame, the pollutants are converted by means of a thermally activated, chemical reaction. ...

08/11/05 - 20050172615 - Device for producing a reducing agent/exhaust gas mixture and exhaust gas purification system
An apparatus for forming a mixture of reducing agent and exhaust gas, having a mixture-forming region into which an exhaust gas and a reducing agent can be introduced, wherein the wall of the mixture-forming region is embodied at least in part with protuberances and indentations, and in particular in corrugated ...

07/28/05 - 20050160721 - Internal combustion engine with nox adsorber
An internal combustion engine includes first and second exhaust paths, and a first NOx adsorber located in the first exhaust path. A flow control valve controls the relative amounts of exhaust gas flowing through the first and second exhaust paths. A first injector injects a reductant into the exhaust gas ...

07/21/05 - 20050155344 - Internal combustion engine of compressing and auto-igniting air-fuel mixture and method of controlling such internal combustion engine
The technique of the present invention produces a first fuel-air mixture containing a first fuel and the air at a specific ratio, which does not allow for auto ignition of the first fuel-air mixture by simple compression, in a combustion chamber. The technique then injects a second fuel, which has ...

07/14/05 - 20050150212 - Method and controller for exhaust gas temperature control
Described is a method for controlling a temperature downstream of a catalyst in the exhaust tract of an internal combustion engine including a first control loop in which a first control variable is calculated from a first deviation that is calculated from a first actual value and a first setpoint ...

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