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Power Plants > Internal Combustion Engine With Treatment Or Handling Of Exhaust Gas > Methods > Anti-pollution Anti-pollutionAnti-pollution 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.01/31/08 - 20080022654 - Method and apparatus for reducing emissions in diesel engines A method of reducing emissions from a diesel engine including the steps of providing an injector to an exhaust outlet of the diesel engine, the injector having an orifice with a diameter of about 0.006 inch or less, providing a reagent to the injector at an inlet pressure between about ... 01/24/08 - 20080016847 - Method and device for determining an oxygen storage capacity of the exhaust gas catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust gas probes of an internal combustion engine An exhaust catalyst is charged with oxygen until saturated. A given first rich air/fuel ratio is set in a combustion chamber of a cylinder. A first oxygen storage capacity value is determined depending on the measured signals from first and second exhaust probes. The exhaust catalyst is charged with oxygen ... 01/17/08 - 20080010971 - Management of regeneration of a diesel particulate filter Described herein is a method for managing regeneration of a diesel-particulate filter for a gas-exhaust system of the internal-combustion engine of a vehicle, comprising a first step of regeneration of the diesel-particulate filter during which the diesel-particulate filter is regenerated at a first regeneration rate, and a second step of ... 01/10/08 - 20080006024 - Exhaust gas purification system for internal combustion engine and method for exhaust gas purification A PM catalyst regeneration control for the purpose of “soot removal” is performed prior to a sulfur poisoning recovery control. In the PM catalyst regeneration control, PM deposits in a catalyst are burned. A target throttle opening degree for the sulfur poisoning recovery control is preset smaller than a target ... 01/03/08 - 20080000220 - System for controlling the function of a diesel engine in a motor vehicle connected to an oxidation catalyst The invention relates to a system for controlling the function of a diesel engine (1) in a motor vehicle, provided with anti-pollution means (6, 7), comprising an oxidation catalyst (6) and arranged in the exhaust system (3) of said engine (1). The catalyst (6) has at least one non-initialised state ... 01/03/08 - 20080000219 - Exhaust filter regeneration regime method and apparatus An exhaust filter regeneration regime is described in which a filter is regenerated by triggering an exothermic reaction in the filter to burn off particulate load. In order to attain the appropriate regeneration temperatures fuel is injected in the exhaust stream and oxidizes upon contact with a catalytic converter. A ... 12/27/07 - 20070295000 - Method and a device for providing lambda control in an internal combustion engine Method for lambda control in an internal combustion engine with a catalytic converter in an exhaust tract and at least one lambda probe mounted inside the catalytic converter. With this arrangement of the upstream probe there are signal delays which slow down the lambda control. To compensate, the measurement signals ... 12/27/07 - 20070294999 - Exhaust gas purification apparatus and exhaust gas purification method for internal combustion engine In an exhaust gas purification apparatus for an internal combustion engine (1) equipped with independent exhaust passages (2a, 2b) provided one for each cylinder group (1a, 1b) with a catalyst (3a, 3b) having a NOx trapping ability being arranged in each exhaust passage, the present invention is intended to provide ... 12/27/07 - 20070294998 - Control method and control device for exhaust gas control apparatus It is an object of the invention to provide a technology for appropriately recovering a decreased HC oxidizing ability of rhodium (Rh), in an exhaust gas control apparatus including a catalyst that contains rhodium (Rh) and a particulate filter (5). In this exhaust gas control apparatus, rich-spike control is prohibited ... 12/27/07 - 20070294997 - Particle filter regeneration method with catalytic combustion device and filtration installation using such a method The present invention relates to a method for regenerating a particle filter (10) arranged in the exhaust line (12) of an internal-combustion engine, notably of diesel type, wherein the clogging state of the filter is evaluated, this state is compared with a threshold value, then, if this threshold value is ... 12/13/07 - 20070283681 - Diesel particulate control A method and apparatus are provided for reducing emissions of particulates from diesel engines. Exhaust is passed through a diesel particular filter having at least two stages comprised of (a) a catalyst section having a platinum group metal catalyst on contact surfaces within the catalyst section and (b) a filter ... 12/06/07 - 20070277503 - Method for checking the friction capability of an exhaust gas catalytic converter In a process for monitoring the function capability of an exhaust-gas catalytic converter 5 located in the exhaust line 3 of an internal combustion engine 1, based on the measured or computed signals of a first lambda probe 6a located upstream from the catalytic converter 5 and of a second ... 12/06/07 - 20070277502 - Exhaust gas purification system for a motor vehicle having a reducing agent storage tank, and associated operating method An exhaust gas purification system for a motor vehicle having a reducing agent storage tank, and an associated operating method. In particular, an exhaust gas purification system for a motor vehicle, for which predetermined maintenance intervals is provided. The system includes a reducing agent storage tank for storing a reducing ... 11/15/07 - 20070261389 - System for assisting the regeneration of depollution means for a motor vehicle engine The inventive system for assisting in the regeneration of depollution means (1) which is integrated in the exhaust means (3) of a diesel engine (4), wherein the engine (4) is associated with a common rail supplying means (7, 8) for injecting fuel into cylinders thereof using at least one post-injection ... 11/08/07 - 20070256405 - Method of exhaust gas purification and exhaust gas purification system In exhaust gas purification system (10) including catalyst unit (50) carrying a NOx occlusion-reduction type catalyst, a first-stage rich control having a target air-fuel ratio lower than theoretical air-fuel ratio is conducted through addition of the amount of reducing agent meeting the amount of oxygen emitted in the initial stage ... 10/25/07 - 20070245713 - Two-stroke lean burn gas engine with a silencer/catalytic converter A low emissions 2-stroke natural gas fueled engine includes at least one cylinder with an exhaust port in communication with a silencer/catalytic converter unit. The unit has first and second volumes in communication with each other. The first volume dampens spurious exhaust pressure excursions and removes particulates in the exhaust. ... 10/18/07 - 20070240402 - Catalytic reduction of nox A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, a particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed. ... 10/04/07 - 20070227120 - System containing oxygen enriched diesel particulate filter and method thereof A system for treatment of exhaust emissions from a compression-ignited internal combustion engine comprises (A) a superatmospheric-pressurized source of gaseous oxygen, (B) an inlet for the gaseous oxygen of component (A) where the exhaust emissions from the engine flow past the inlet and form a mixture with the gaseous oxygen ... 09/20/07 - 20070214769 - Fuel supply control method applied to exhaust gas control apparatus for internal combustion engine and exhaust gas control apparatus to which the method is applied In an exhaust gas control apparatus for an internal combustion engine (1) of the invention, including an exhaust gas control catalyst (8) which purifies exhaust gas released from the internal combustion engine (1), and a fuel supply valve (10) which supplies fuel to a portion upstream of the exhaust gas ... 09/06/07 - 20070204595 - Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine An exhaust gas purification apparatus for use in an internal combustion engine comprises an exhaust gas duct connected to the engine through which exhaust gas containing NOx gas passes, and a catalyst disposed in the exhaust gas duct such that it contacts the exhaust gas. The catalyst chemically adsorbs NOx ... 08/30/07 - 20070199302 - Zeolite-containing oxidation catalyst and method of use Oxidation catalyst compositions for treating diesel exhaust include ceria and, optionally, alumina, each having a surface area of at least about 10 m2/g, and a zeolite, e.g., Beta zeolite. Optionally, platinum may be included in the catalytic material, preferably in amounts which are sufficient to promote some gas-phase oxidation of ... 08/09/07 - 20070180816 - Exhaust emission purifying apparatus for engine A NOx reduction catalyst and an ammonia slip oxidation catalyst are disposed in an exhaust system in this order, and also, an electric fan is disposed on piping which communicates an upper space of a storage tank storing therein a reducing agent with the exhaust upstream of the NOx reduction ... 07/19/07 - 20070163232 - Exhaust gas purifying apparatus for engine Clogging of an injection nozzle which supplies a reducing agent to the exhaust gas on an upstream side of a reduction catalyst in the exhaust gas passage is prevented, and the efficiency of NOx purification processing is improved. A reducing agent supply unit uses a detection signal of the exhaust ... 07/19/07 - 20070163231 - Method for operating an internal combustion engine A method is described for operating an internal combustion engine, in particular of a motor vehicle. In the method, a lean air/fuel mixture is burned in a combustion chamber; nitrogen oxides contained in the exhaust gas are stored in an accumulator-type catalytic converter; a storage efficiency, with which the accumulator-type ... 07/12/07 - 20070157602 - Tank system with a main tank and a melting device having a melt tank A tank system can provide a predetermined cold start volume (VKS) of an operating liquid required by a liquid consumer after a cold start. The tank system can provide a urea solution to an SCR catalytic converter. The tank system includes a main tank with a filling opening through which ... 07/12/07 - 20070157601 - Exhaust gas control system for internal combustion engine and method for recovering filter thereof In the case where an operating state of an internal combustion engine (1) belongs to a filter forced recovery region, filter forced recovery is performed (S106) when an amount of particulate matter deposited in a filter (20) becomes equal to or larger than a predetermined amount (S0). In the case ... 07/12/07 - 20070157600 - Regeneration of diesel particulate filters using lambda variation This invention provides a method of regenerating a diesel particulate filter in an exhaust-gas purification system of a diesel engine using lambda variation. During regeneration on demand, the ratio of air to fuel for the corresponding operating point of the diesel engine is adjusted so as to achieve the substantially ... 07/12/07 - 20070157599 - Method for operating a compression-ignition internal combustion engine In a method for operating a compression-ignition internal combustion engine, a mean gas temperature in the cylinder is determined during a combustion in the combustion chamber, and a gradient of the mean gas temperature is calculated. The untreated nitrogen oxide emission level from the internal combustion engine is then determined ... 06/14/07 - 20070130914 - Marine exhaust valving A marine engine exhaust system includes a catalyst arranged to intercept a flow of exhaust flowing along the exhaust system, a water muffler downstream of the catalyst, and a water-activated exhaust valve disposed between the water muffler and an upstream catalyst and configured to impede flow of water upstream from ... 04/19/07 - 20070084192 - Air-fuel ratio control apparatus of internal combustion engine and control method thereof An air-fuel ratio control apparatus and control method thereof performs air-fuel ratio feedback control based on an estimated value (i.e., an upstream side estimated air-fuel ratio) of an air-fuel ratio of gas discharged from a combustion chamber into an exhaust passage and an output value of an air-fuel ratio sensor ... 04/19/07 - 20070084192 - Air-fuel ratio control apparatus of internal combustion engine and control method thereof An air-fuel ratio control apparatus and control method thereof performs air-fuel ratio feedback control based on an estimated value (i.e., an upstream side estimated air-fuel ratio) of an air-fuel ratio of gas discharged from a combustion chamber into an exhaust passage and an output value of an air-fuel ratio sensor ... 04/12/07 - 20070079596 - Apparatus and method for controlling air/fuel ratio of internal combustion engine An apparatus for controlling air-fuel ratio of an internal combustion engine having: a three-way catalytic converter; an oxygen sensor, which is installed at the upstream side of said catalytic converter in respect to exhaust gas flow direction, for generating a switching signal showing rich/lean relative to a certain air-fuel ratio; ... 03/15/07 - 20070056264 - Method of dispensing fuel into transient flow of an exhaust system A system or method for controlling the delivery of fuel into the transient flow of an exhaust system to control emissions. A mathematical model representative of the exhaust system can be used to determine, based on operating conditions of the exhaust system, a rate of fuel delivery suitable for achieving ... 02/22/07 - 20070039311 - Method for operating a component part disposed in an exhaust gas region of an internal combustion engine and device for implementing the method A method for operating a component part situated in an exhaust gas region of an internal combustion engine, and a device for carrying out the method are proposed, in which, in a first operating phase, an exhaust gas component is embedded, and which, in a second operating phase, is regenerated ... 01/25/07 - 20070017210 - Air-fuel ratio controller for internal combustion engine A target air-fuel ratio setting part has a sub-feedback part, a target air-fuel ratio enriching part, and a target air-fuel ratio changeover part. The sub-feedback part variably sets a target air-fuel ratio upstream of a catalyst on the basis of a detection signal of an O2 sensor provided downstream of ... 01/04/07 - 20070000235 - Device and method for estimating temperature of exhaust pipe of internal combustion engine A device for estimating a temperature of an exhaust pipe of an engine includes: a first obtaining section for obtaining a first heat amount that the exhaust pipe receives per unit time from exhaust gas of the internal combustion engine; a second obtaining section for obtaining a second heat amount ... 12/21/06 - 20060283173 - Further improved reversing flow catalytic converter for internal combustion engines A further improved compact reversing flow catalytic converter with protection from overheating includes an improved valve unit which directs exhaust gases through a container filled with catalytic material to permit a bypass of catalytic material when a temperature of the material exceeds a predetermined threshold. The container defines a U-shaped ... 12/21/06 - 20060283172 - System and method for reducing nox emissions in an apparatus having a diesel engine In a mechanical apparatus having a diesel engine including a combustion chamber, an intake valve for passing air into the combustion chamber, and an exhaust valve for passing exhaust from the chamber, the mechanical apparatus also having an aftertreatment device configured to treat emissions from the diesel engine, a method ... 12/14/06 - 20060277896 - Method for controlling internal combustion engine emissions A method for controlling internal combustion engine emissions, including the steps of reading signals from sensors in an engine exhaust manifold and catalytic converter exhaust, an upstream one of the sensors being provided with an air-fuel mixture setpoint, comparing signal values with previous average values and automatically adjusting the air-fuel ... 11/30/06 - 20060266017 - Method for protecting an exhaust aftertreatment system The method of the present invention is adapted to protect an exhaust aftertreatment system by preventing the system from becoming clogged and/or damaged during periods of light engine load. According to a preferred embodiment, the present invention protects the exhaust aftertreatment system by increasing the load on the engine during ... 11/09/06 - 20060248875 - Methods and systems for safely operating a diesel engine in a methane-rich environment A method and system for more safely operating a diesel engine in a methane-rich environment, such as a mine. The method includes providing a diesel engine having an air intake, a combustion chamber, and an exhaust. Methane-rich air is introduced into the engine through the air intake and mixed with ... 11/09/06 - 20060248874 - Exhaust system for lean burn ic engine including particulate filter and nox absorbent An exhaust system for a lean burn internal combustion engine comprises a particulate filter (CSF), a first NOx absorbent (NOx(1)) disposed upstream of the filter and a second NOx absorbent (NOx(2)) disposed downstream of the filter. ... 10/05/06 - 20060218893 - Process for determining the lambda value upstream from the exhaust catalytic converter of an internal combustion engine A process is proposed for determining the lambda value upstream from the exhaust catalytic converter in which variation in the lambda value (Δλ) from the stoichiometric value is determined on the basis of variation in the charging (ΔOSC) of the oxygen reservoir (7) of the exhaust catalytic converter (6) and ... 09/28/06 - 20060213183 - Power plant and operating method A power plant comprises a gas turbo group with a heat transfer apparatus, for example a recuperator for the preheating of the combustion air, arranged downstream of the turbine in the smoke gas path of the gas turbo group. A smoke gas purification catalyst is arranged downstream of at least ... 09/07/06 - 20060196166 - Warm-up method and warm-up system for internal combustion engine A warm-up system is provided for an internal combustion engine equipped with a CO2 absorbing and releasing agent that absorbs CO2 at a temperature in a first temperature range and releases the CO2 at a temperature in a second temperature range that is higher than the first temperature range. The ... 09/07/06 - 20060196165 - Exhaust purifying apparatus and exhaust purifying method for internal combustion engine In an exhaust purifying apparatus, a fuel adding valve (31) supplies unburned fuel to an exhaust passage (14) of a diesel engine (10) so that particulate matter collected in a catalytic converter (33) is burned and removed. The supply of unburned fuel from the fuel adding valve (31) is executed ... 08/24/06 - 20060185348 - Device for purifying exhaust gases Device and method for purifying exhaust gases from motor vehicles. A housing includes an intake opening, an outlet opening, an exhaust gas inflow area, an exhaust gas outflow area, and a longitudinal axis. At least one module for purifying exhaust gas is arranged in the housing and has a module ... 08/03/06 - 20060168941 - Method for operating an internal combustion engine and device for implementing the method A method is provided for operating an internal combustion engine in whose exhaust-gas region an exhaust-gas treatment device is situated, and in which a reagent is introduced into the exhaust-gas region of the internal combustion engine. in addition, a device is provided for implementing the method. The reagent pressure occurring ... 08/03/06 - 20060168940 - Method and apparatus for an exhaust emissions control system A method for mutual adaptation of a delivery module and a metering module of an exhaust emissions control system that has an exhaust gas conduit and a control module, the delivery module having a reservoir that has a venting valve and contains a uric acid solution that is conveyed via ... 08/03/06 - 20060168939 - Exhaust purifying apparatus and exhaust purifying method for internal combustion engine An exhaust purifying apparatus estimates an accumulation amount of particulate matter trapped about a catalyst in an exhaust system. When the estimated accumulation amount is equal to or more than a permissible value, the apparatus executes PM elimination control for supplying unburned fuel component to the catalyst. The apparatus sets ... 06/08/06 - 20060117736 - Exhaust system for a diesel engine comprising a nox- trap An exhaust system for a diesel engine includes a NOx-trap having at least one first NOx absorbent and platinum. The exhaust system also has at least one second NOx absorbent disposed upstream of the NOx trap. The at least one second NOx absorbent is alumina, ceria, or both. ... 06/01/06 - 20060112678 - Multiple reactant multiple catalyst selective catalytic reduction for nox abatement in internal combustion engines The invention relates to systems and methods for treating oxygen-rich NOx-containing exhaust. The systems and methods comprise using first and second NOx reducing catalysts. According to one aspect of the invention, the first catalyst reduces NOx in oxygen-rich exhaust primarily through reaction with a first reductant species and the second ... 05/25/06 - 20060107649 - Apparatus and method for clarifying exhaust gas of diesel engine An apparatus for purifying an exhaust gas of a diesel engine, characterized in that it has an NOx adsorption and reduction type catalyst and a diesel particulate filter for oxidizing and removing particulate matters in the exhaust gas, which are provided in the flow route for the exhaust gas and ... 05/04/06 - 20060090454 - Method for controlling the lean operation of an internal combustion engine, especially an internal combustion engine of a motor vehicle, provided with a nox storage catalyst The invention relates to a method for controlling the lean operation of an internal combustion engine, especially an internal combustion engine of a motor vehicle, provided with a nitrogen oxide storage catalyst. As claimed in the invention, in a first process step, to establish the instant of switching from the ... 04/27/06 - 20060086079 - Device and method for dosing and transporting dry urea, especially during the implementation of the scr method in motor vehicles In a device for dosing and transporting dry urea, e.g., for implementing the SCR method in a motor vehicle, the device includes a storage vessel containing the dry urea in the form of pellets, the wall of the storage vessel having an opening to which a transport line is connected ... 04/20/06 - 20060080951 - Method for controlling the temperature of a catalyst and multicylinder engine comprising a lambda splitting exhaust gas cleaning system The invention is directed to a method for controlling the temperature of at least one catalyst arranged in an exhaust gas cleaning system (12) of a lean-runnable multi-cylinder engine (10), wherein energy is introduced into the exhaust gas cleaning system (12) by a lambda split, and to a corresponding multicylinder ... 03/23/06 - 20060059892 - Clean power system One aspect of the invention relates to a power generation system comprising an internal combustion engine that operates, generally by limiting the adiabatic flame temperature, to produce an engine exhaust that is low in NOx and particulate matter. The exhaust is treated by a fuel cell to remove organic compounds ... 02/16/06 - 20060032213 - Method and device for operating an internal combustion engine A method and device for operating an internal combustion engine, which diagnose and/or adapt the exhaust-gas recirculation system for, in particular, multibranch internal combustion engines. In this context, the internal combustion engine includes at least one adsorption catalyst in at least one exhaust branch. In addition, at least one exhaust-gas ... 11/03/05 - 20050241296 - Exhaust after-treatment system for a lean burn internal combustion engine An exhaust gas after-treatment system having a NOx storage material and a separate HC and CO oxidation section, such oxidation section having an oxidation catalyst substantially free of the NOx storage material. ... 11/03/05 - 20050241295 - Device and method for purification of exhaust gas in an internal combustion engine The present invention relates to an for apparatus and a method of cleaning exhaust gas from an internal combustion engine, in particular a Diesel engine. The apparatus has an exhaust gas line and an ozone source for enriching the exhaust gas stream of the engine with ozone. The ozone source ... 10/13/05 - 20050223696 - Process and device for the lambda control of an internal combustion engine with exhaust catalyst The invention relates to a process for the lambda control of an internal combustion engine with exhaust catalyst, having a lambda probe mounted downstream from the exhaust catalyst as control probe, a probe by means of which a post-catalyst lambda value of an exhaust gas flow leaving the exhaust catalyst ... 10/06/05 - 20050217240 - Coordinated engine control for lean nox trap regeneration A method for controlling a direct-injection gasoline engine during regeneration of a lean NOx trap disposed in an exhaust path of the engine includes determining the current air-fuel ratio and comparing the current air-fuel ratio to a lean limit air-fuel ratio. Transitions from lean stratified engine operation to rich homogenous ... 09/29/05 - 20050210865 - Accelerating catalytic conversion A method of reducing exhaust emission from a catalytic converter apparatus of a vehicle, the apparatus including at least one catalytic converter, each of the at least one catalytic converter having a catalyst brick positioned within a predefined length of the vehicle. The method includes directing exhaust to pass more ... 08/11/05 - 20050172613 - Regulation method and a device for exhaust gas purification The invention relates to a device for purifying exhaust gases from a combustion engine (1), comprising an arrangement (30) for recirculating exhaust gases from the engine to an air intake (2) thereof, a valve device (12) controlled by a control device (13) for regulating the relation between fresh air and ... 06/16/05 - 20050126157 - Method of improving the operation of combustion particulate filters A method is disclosed that improves the operation of fuel combustion systems utilizing particulate filters. The method includes the combustion of a fuel emulsion in a fuel combustion system having a particulate filter. The fuel emulsion may comprise water and a fuel with the emulsion including a metal-containing compound, such ... 06/09/05 - 20050120705 - Electronic emissions control A method of controlling emissions from an internal combustion engine including governing engine speed with respect to a constant speed, maintaining an air/fuel ratio of the engine, flowing exhaust from the engine through an exhaust system containing a catalyst, monitoring a variable with a feedback sensor located upstream of the ... 06/02/05 - 20050115223 - Exhaust emission control device of engine An exhaust emission control device comprises a temperature sensor for detecting the temperature of exhaust gas directly on the upper-stream side of a diesel particulate filter. An ECU adjusts a compulsive regeneration interval in accordance with a cumulative history of cases in which the exhaust gas temperature detected by means ... 06/02/05 - 20050115222 - Device for exhaust gas purification The invention relates to a device for purifying exhaust gases from a combustion engine (1), comprising a first filter (10) arranged in an exhaust (7) between the engine (1) and an exhaust outlet (8) for removing particulate constituents from the exhaust gases, and a recirculation conduit (11) for diverting a ... ### FreshPatents.com Support |