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Actuator Circuit (e.g., Engine Condition Responsive Electronic Circuit Actuates Injector Valve)

Actuator Circuit (e.g., Engine Condition Responsive Electronic Circuit Actuates Injector Valve) patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

Related Categories:

Internal-combustion Engines


Charge Forming Device (e.g., Pollution Control) > Fuel Injection System > Electrically Actuated Injector > Actuator Circuit (e.g., Engine Condition Responsive Electronic Circuit Actuates Injector Valve)



Fluid injector for a combustion engine
12/04/14 - 20140352667 - A fluid injector for a combustion engine includes a central longitudinal axis, an injection valve housing with an injection valve cavity, a valve needle axially movable within the injection valve cavity, and an electromagnetic actuator unit that actuates the valve needle. The electromagnetic actuator unit includes a pole piece fixedly...

Determining the opening behavior of a fuel injector by means of an electrical test excitation without magnetic saturation
11/27/14 - 20140345571 - A method for determining an opening behavior of a combustion engine fuel injector having a coil drive includes: applying to a coil of the coil drive an electrical test excitation that is weaker than an electrical standard excitation applied to the coil during normal operation of the engine, such that...

Method for learning a minimum actuation duration of fuel injectors of an internal combustion engine
11/20/14 - 20140338640 - A method for learning and determining a minimum injector-specific electric actuation duration for at least one fuel injector of an internal combustion engine of a motor vehicle. Starting with a predefined electric actuation duration which definitely does not result in an injection, the electric actuation duration is gradually increased in...

Internal combustion engine
11/13/14 - 20140331973 - An internal combustion engine includes first and second fuel injection valves, a valve actuating device and an ECU. The ECU sets a distribution ratio of the first fuel injection valve to 100% when an accumulation amount Spfi is larger than a predetermined value Xpfi in a predetermined case. The predetermined...

Method for determining a position of a lock element of an injection valve for an internal combustion engine
11/06/14 - 20140326218 - A method for determining a position of a lock element of an injection valve for an internal combustion engine includes moving the lock element in the direction of a locked position in a closing movement in order to lock the injection valve, subsequently measuring a closure time at which the...

System and method for injector coking diagnostics and mitigation
10/30/14 - 20140318498 - A system and method for compensating for, or alleviating accumulation of, coking residues on fuel injectors is disclosed. The method includes adjusting an engine operating parameter based on a shift in a fuel injector current profile during an initial current rise of injector activation....

Fuel injection device for engine of motorcycle
10/30/14 - 20140318499 - A motorcycle engine having cylinders arranged in parallel in a vehicle width direction, an air cleaner, a fuel tank arranged above the engine to cover the air cleaner, and a fuel injection device. The fuel injection device includes an electronic control throttle body unit electrically controlling a throttle body of...

Fuel property determination system for vehicle
10/30/14 - 20140318500 - An object of the present invention is to provide a technology with which when a gaseous fuel is supplied into a fuel tank of a vehicle with an internal combustion engine that uses gaseous fuel, properties of the supplied gaseous fuel can be determined promptly. To achieve the object, the...

Control device for internal combustion engine
10/30/14 - 20140318501 - An objective of the present invention is to stabilize the fuel injection amount for each cylinder and to execute fuel injection control accurately in a single-pressure-feed dual-injection type alcohol fuel injection system. An engine includes two injection valves and and a single-pressure-feed dual-injection type fuel supply system. The fuel supply...

Controller for an injection system
10/23/14 - 20140311457 - A controller for an injection system having a plurality of fuel injectors includes a map controller. From a desired injection value, the map controller generates a control value for actuating a fuel injector with reference to a specified map. A determination unit determines the actual injection value for at least...

Engine exhaust purification device
10/23/14 - 20140311458 - An engine exhaust purification device includes a filter, a burner, and a control unit. The filter is arranged in an engine exhaust pipe. The burner burns fuel injected from a fuel injection nozzle and heats exhaust to increase the temperature of the filter at an upstream side of the filter...

Fuel injection control device for internal combustion engine
10/23/14 - 20140311459 - When a given learning performance condition is met, a partial lift injection for opening a fuel injector is performed by an injection pulse which brings about a partial lift state in which a lift quantity of a valve body of the fuel injector does not reach a full lift position,...

Fuel supply control apparatus for bi-fuel internal combustion engine, and method of switching fuel in bi-fuel internal combustion engine
10/23/14 - 20140311460 - When switching the fuel to be used for engine operation from gasoline to CNG, in a state where CNG is supplied experimentally to one cylinder serving as a judgment object and gasoline is supplied to other cylinders, whether or not CNG can be supplied to the cylinder serving as a...

System and method for estimating the richness of the gaseous mixture in the combustion chamber of an internal combustion engine of a motor vehicle power plant
10/09/14 - 20140299104 - A system for estimating richness of a gaseous mixture in a combustion chamber of an internal combustion engine of a motor vehicle power plant, including a mechanism injecting an additional combustible gas into a fresh air intake circuit of the engine, a mechanism measuring concentrations of the additional gas in...

Methods for low temperature combustion and engines using the same
10/09/14 - 20140299105 - This invention discloses a method for low temperature combustion using at least two fuels with low and high boiling points being directly injected into engine combustion chamber separately and sequentially with two different spray patterns, wherein the low boiling point fuel can be quickly vaporized to form a low temperature...

Autonomous multi-fuel engine using gaseous fuels
10/09/14 - 20140299106 - An engine uses gaseous fuel from an intermittent fuel source and a backup fuel source. A fuel supply and control system includes intermittent and backup fuel supply lines, a sensor, a flow control device, and an engine controller. The intermittent and backup fuel supply lines deliver gaseous fuel from the...

Control system and control method of spark ignition gasoline engine
10/09/14 - 20140299107 - An engine body includes a cylinder with a geometrical compression ratio of 15 or higher, and is supplied with fuel containing at least gasoline. When an operating mode of the engine body is in a high load range, a controller (i.e., a PCM 10) drives a fuel injection valve (i.e.,...

Fuel injection control system
10/02/14 - 20140290624 - A fuel injection control system includes an engine speed detector, a throttle opening degree detector, a fuel injection device, a fuel injection controller, a fuel injection number determining device, and a fuel injection mode setting device. The engine speed detector is configured to detect an engine speed (NE). The throttle...

System, method, and apparatus for fuel injection control
09/25/14 - 20140283792 - A method includes determining a stored injection relationship that includes a number of fuel performance parameters. In one form the fuel performance parameters are related to a particular shape, and may be related to a particular operating condition. The method includes determining a fuel performance outcome during a fuel injection...

Control of the injection of fuel upon combustion engine start-up
09/11/14 - 20140251279 - A method for controlling injection of fuel upon start-up of a combustion engine including determining a set point quantity of fuel on start up, which is dependent on a difference between a set point acceleration of the engine and an instantaneous acceleration of the engine. An electronic control unit and...

Control apparatus for internal combustion engine and control method for internal combustion engine
09/11/14 - 20140251280 - A control apparatus that controls a fuel supply system of an internal combustion engine of a vehicle, the fuel supply system including a low-pressure fuel supply mechanism that injects low-pressure fuel into an intake port of the internal combustion engine, and a high-pressure fuel supply mechanism that injects high-pressure fuel...

Fuel injection control device for internal combustion engine
09/11/14 - 20140251281 - When injecting fuel from a direct injector and a port injector such that a requested fuel injection amount for an internal combustion engine is reached, the direct injector is driven in the following manner. That is, target fuel injection amounts are set on the basis of the engine operating state...

Fuel injection controller and fuel injection system
08/28/14 - 20140238354 - A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold...

Control unit for internal combustion engine
08/21/14 - 20140230792 - Provided is a control unit (1) for an internal combustion engine (10) including a direct injector (11) directly injecting fuel into a cylinder (20) and a port injector (12) injecting fuel into an intake port (17). The control unit (1) includes an injection volume calculator (5) to calculate a volume...

Internal combustion engine control apparatus
08/21/14 - 20140230793 - In a dual-fuel injection operation, when a fuel injection time by a direct injector as determined on the basis of a direct fuel pressure is less than a minimum value, a dual-injection is performed with a duel injection rate such that the amount of fuel injected by the direct injector...

System and method for determining injected fuel quantity based on drain fuel flow
08/14/14 - 20140224223 - A system and method is provided for controlling the amount of fuel delivered during an injection event by measuring the drain fuel flow from a valve that controls the injection event....

Method for controlling internal combustion engine, internal combustion engine, and vehicle equipped with same
08/07/14 - 20140216413 - A method for controlling an internal combustion engine, an internal combustion engine, and a vehicle equipped with the same which reduce roll vibrations due to a power plant including a multi-cylinder internal combustion engine and a support apparatus during start of the internal combustion engine without impairing its startability. A...

Control unit for internal combustion engine
08/07/14 - 20140216414 - A control unit for an internal combustion engine includes a load detector to detect a load on the engine, an injection volume calculator to calculate a cylinder injection volume indicating a volume of fuel injected from a direct injector, a first controller to perform a first control for increasing the...

Method to detect partial failure of direct-injection boost voltage
07/10/14 - 20140190453 - A power supply diagnostic circuit includes a switching power supply that generates a voltage for powering a fuel injector. An injector control module selectively applies the voltage to the fuel injector and monitors a resultant electrical current flow through the fuel injector. The switching power supply includes a dual path...

Gaseous fuel system, direct injection gas engine system, and method
07/03/14 - 20140182559 - The disclosure describes an engine system having liquid and gaseous fuel systems, each of which injects fuel directly into an engine cylinder. A controller controls the pumping of a liquefied natural gas (LNG) in the gaseous fuel system using variable speeds for reciprocally moving a pumping piston of a pumping...

Variable speed dual fueled engine and electrical power management apparatus and methods
07/03/14 - 20140182560 - A fuel system is provided for use with a variable speed dual fuel engine. The fuel system comprises a first fuel injector configured for supplying diesel fuel to the engine, a second fuel injector configured for supplying natural gas to the engine, and a fuel controller configured to implement a...

Control system for an engine with egr flow
06/26/14 - 20140174406 - A system associated with an internal combustion engine is disclosed. The system may be configured to inject fuel at a current fuel injection flow rate and to direct exhaust at a current EGR flow rate. A controller may be configured to determine a maximum fuel injection flow rate and a...

Wideband oxygen sensing method and apparatus
05/15/14 - 20140130779 - A method of determining an air:fuel ratio based on information from an oxygen sensor exposed to exhaust gases of a combustion process, and related systems. A constant current is supplied to an oxygen sensor that has both an n-type sensing circuit and a p-type sensing circuit that share a common...

Fuel amount distribution method for engine with dual injector and apparatus therefor
05/08/14 - 20140123954 - It is possible to improve volatility of fuel in a fuel-gas mixture and improve the combustion performance of an engine by appropriately distributing the amount of fuel that is injected from two injectors disposed in two intake port, in a dual injector engine....

Fuel injection control system for internal combustion engine
05/08/14 - 20140123955 - A fuel injection control system for an internal combustion engine in which a driving signal for a high pressure fuel pump is calculated by using proportional plus integral control based on a difference between a delivery pressure of the high pressure fuel pump and a target pressure thereof. A delivery...

Control device for direct injection engine
05/08/14 - 20140123956 - The present invention provides a control device for a direct injection engine, capable of reducing the amount of fuel adhesion on a piston crown and a cylinder bore wall surface and improving homogeneity of a fuel-air mixture inside the cylinder, thereby reducing the particulate number of emitted PM. The fuel...

Actuator unit, in particular for injecting a fuel into a combustion chamber of an internal combustion engine
04/10/14 - 20140096746 - An actuator unit for injecting fuel into a combustion chamber of an internal combustion engine includes an electrically conductive excitation winding, a ferromagnetic circuit having a ferromagnetic return, and a moveable armature. The armature is held in an idle position by a holding force of a spring element. A current...

Fuel injection controller
03/13/14 - 20140069389 - A fuel injection controller is provided with a detection control portion which detects a valve-opening time. The detection control portion supplies the low valve-opening voltage to the fuel injector from a low voltage supply. An electric current flowing through a coil is gradually increased. When the fuel injector is fully...

Fuel injection controller
03/13/14 - 20140069390 - A fuel injection controller supplies a valve-opening voltage VF1 to a fuel injector. In order to obtain a small injection quantity, the controller terminates a supply of the valve-opening voltage before the fuel injector is fully opened. A bias-control portion supplies a bias voltage to the fuel injector instead of...

Fuel injection controller
03/13/14 - 20140069391 - A fuel injection controller has terminals which can be connected to the coil of the fuel injector. A first valve-open control portion supplies the valve-opening voltage to the terminals for opening the fuel injector. The first valve-open control portion stops supplying the electric supply to the coil before the fuel...

Strategy for fueling a diesel engine
03/13/14 - 20140069392 - A compression ignition engine (10) operates to fuel an engine cylinder (12) to create an in-cylinder air-fuel charge and to cause that charge to autoignite. A fuel injector (20) operates to inject fuel into the engine cylinder for substantially the entire duration of a first phase (24) of fuel injection...

Fuel injection apparatus for internal combustion engine
03/13/14 - 20140069393 - In a fuel injection apparatus for an internal combustion engine, capable of changing a pressure of fuel that is supplied to a fuel injection valve (21A), the fuel injection valve (21A) has an upper nozzle hole group (25U) including a plurality of nozzle holes (25u) and located on an upper...

Spark-ignition direct injection engine
03/06/14 - 20140060489 - A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. The controller operates the engine to perform compression-ignition combustion within a first operating range, and controls the ignition plug to operate the...

Spark-ignition direct injection engine
03/06/14 - 20140060490 - A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. Within a low engine speed operating range of a predetermined high engine load range, the fuel pressure setting mechanism sets a fuel...

Fuel injection control device for saddle-ride type vehicle
03/06/14 - 20140060491 - A fuel injection control device includes a throttle opening read timing setter that sets the timing at which a throttle opening is read. The setter is triggered to detect the throttle opening used for calculation of a basic injection amount by the start of calculation timing of the basic injection...

Method for modifying a vehicle to receive and utilize a secondary fuel
03/06/14 - 20140060492 - A method for modifying a vehicle to receive and utilize a secondary fuel is provided, as well as the modified vehicle. The vehicle prior to modification can use a primary fuel, and comprises signal transmitter for supplying a signal having a pulse width that varies to vary the quantity of...

Spark-ignition direct injection engine
03/06/14 - 20140060493 - A spark-ignition engine is provided. The engine includes an engine body, a fuel injection valve, an ignition plug, an EGR introduction system, and a controller for operating the engine body by controlling the fuel injection valve, the ignition plug, and the EGR introduction system. The controller controls to combust mixture...

On-vehicle compressed natural gas system with in-cabin display
03/06/14 - 20140060494 - A compressed natural gas (CNG) fueling system includes a CNG reservoir that can be mounted to a vehicle, a sensor arrangement that can sense an environmental condition in a vicinity of the vehicle and a condition associated with the reservoir, an electronically configurable display that can be mounted within a...

Method of compensating for injector aging
03/06/14 - 20140060495 - A method of controlling a fuel injector is provided. Engine speed is monitored. Engine torque output is monitored. It is determined if the engine speed is within one of a plurality of predefined engine speed ranges. It is determined if the engine torque output is within one of a plurality...

Control apparatus for internal combustion engine
02/27/14 - 20140053813 - A fuel injection valve (26) is provided which is capable of directly injecting fuel into a cylinder. If a target fuel injection amount is smaller than a minimum fuel injection amount that is minimum and is capable of injecting during one opening and closing operation of the fuel injection valve...

Injection timing
02/20/14 - 20140048045 - Various systems and methods for determining a start of fuel injection including a gaseous fuel in an internal combustion engine are provided. In one embodiment, an end of gas injection, a duration of gas injection, and a start of gas injection in an induction pipe of a cylinder of an...

Method and device for controlling pilot injection timing when abnormality occurs in combustion diagnosis signal relating to engine
02/20/14 - 20140048046 - The present invention includes: an injection timing correction unit 62 which repeatedly corrects a fuel injection timing in relation to a cylinder in which combustion is determined by a combustion diagnosis device 44 to be less than optimal such that a correction amount accumulates until combustion is determined to be...

Fuel supply control device and control method for engine
02/20/14 - 20140048047 - In an engine that includes a liquid fuel injector and a gaseous fuel injector connected to an intake pipe via a fuel passage and that switches fuel supplied into intake air between liquid fuel and gaseous fuel, an electronic control unit increases fuel in an amount required to fill the...

Control method for an internal combustion engine and internal combustion engine
02/13/14 - 20140041637 - The method for controlling the operation of an internal combustion engine comprises at least two operating modes. In a first operating mode, the intake valve is closed at a first predetermined crank angle, in accordance with the Miller cycle, before the piston reaches bottom dead center during the intake stroke...

Fuel injection control apparatus
02/06/14 - 20140034025 - In a fuel injection control apparatus, an injector is driven to open its valve by supplying a coil of the injector with a current during a high-level period of a power supply command signal outputted from a microcomputer. A valve-closing time of the injector is detected based on a coil...

Reactivity controlled compression ignition engine with exhaust gas recirculation
01/30/14 - 20140026859 - An internal combustion engine is configured to utilize a reactivity controlled compression ignition process and an exhaust gas recirculation (“EGR”) system. The EGR system directs a portion of the exhaust gasses from the exhaust system to the air intake system. The engine system is adapted to introduce a first fuel...

Apparatus and method for controlling internal-combustion engine
01/30/14 - 20140026860 - An apparatus and a method control an internal-combustion engine with a fuel injection valve for injecting fuel into an inlet port. In fuel injection control, injection field pressure at injection start timing is estimated from engine rotation speed and injection starting timing of the fuel injection valve. Since flow rate...

Fuel injection device
01/16/14 - 20140014069 - A fuel injection device is equipped with a fuel injection valve that is mounted in an engine body and injects fuel containing air bubbles, and void fraction adjustment means that changes a void fraction of the fuel that is to be injected from the fuel injection valve. The void ratio...

Injector nozzle coking compensation strategy
01/02/14 - 20140000566 - Systems and methods for compensating for nozzle coking in fuel injection system include creating expected fuel flow rate formula for selected fuel injection nozzle, operating selected fuel injection nozzle for a time, measuring fuel pressure and injector control valve on-time of fuel injection nozzle during operation, determining expected fuel flow...

Closed loop control fuel injection method
12/26/13 - 20130340716 - A closed loop control fuel injection method allows an injection amount and injection timing to be obtained, in such a way that an HRR (Heat Release Rate) is calculated from a combustion pressure signal of a combustion pressure sensor after a related pilot fuel amount is injected in a state...

Methods and systems for conversion of single-fuel engine to multiple-fuel engine with diesel oxidation catalyst
12/26/13 - 20130340717 - Engine conversion systems for converting an internal combustion engine from a single to a multiple-fuel engine are described. After engine conversion, an electronic control unit (ECU), can control amounts of a first fuel (for example, diesel) and amounts of a second fuel (for example, propane) that are provided to combustion...

Direct injection event-based engine starting
12/26/13 - 20130340718 - A method for starting an internal combustion engine having direct fuel injection, comprising of adjusting a number of direct injections per combustion cycle based on a cylinder event number from a first cylinder event....

Method for operating an injection system for an internal combustion engine
12/26/13 - 20130340719 - In a method for operating an injection system for an internal combustion engine having a combustion chamber, in a first method step, a first inlet valve to the combustion chamber is opened and fuel is injected into the combustion chamber through the open first inlet valve by a first injector,...

Fuel injection device
12/26/13 - 20130340720 - A fuel injection device is provided with a fuel injection valve to inject fuel into a combustion chamber of an engine, and an electronic control unit to operate the fuel injection valve to inject the fuel in multiple separate injections. The electronic control unit controls a timing of a first...

System for controlling combustion condition in vehicle engine
12/12/13 - 20130327299 - In a system, a fuel supply increasing unit increases, upon determination that abnormal combustion takes place in at least one cylinder, a quantity of fuel to be supplied into the at least one cylinder in comparison to a quantity of fuel to be supplied into the same cylinder in which...

Fuel pressure waveform acquisition device
12/12/13 - 20130327300 - A fuel injection system has a fuel injector and a fuel pressure sensor. An ECU acquires a pressure waveform detected by the fuel pressure sensor during performing a multi-stage injection as a detected waveform at the time of the multi-stage injection, memorizes a model waveform, which is used as a...

Injection device
12/12/13 - 20130327301 - An injection device for an internal combustion engine includes a piezo actuator for moving a valve piston, and a control unit for actuating the piezo actuator. The control unit supplies electrical pulses having different pulse energy to the piezo actuator and determines a return stroke between the piezo actuator and...

System for fuel injection control in an internal combustion engine
11/28/13 - 20130312708 - A system for fuel injection control in internal combustion engine is provided. Fuel is injected during exhaust stroke from a fuel injector for port injection upstream of an intake valve. In-cylinder temperature as the engine cylinder undergoes compression is predicted. Fuel is injected during intake stroke from the fuel injector...

Method for operating a fuel injection system of an internal combustion engine
11/28/13 - 20130312709 - A method for operating a fuel injection system of an internal combustion engine is described. The fuel injection system has an injector for metering fuel into a combustion chamber of the internal combustion engine. The injector has an actuator, a control valve and a nozzle needle. In the method, the...

Method and device for actuating an injector in a fuel injection system of an internal combustion engine
11/21/13 - 20130306034 - A device and a method for actuating an injector in a fuel-injection system of an internal combustion engine are described. Using a first calibration method and based on a control parameter, an injector parameter which characterizes the injection process is determined. Starting from this injector parameter, a first feature is...

Method for operating a motor vehicle
11/14/13 - 20130298875 - A method for operating a motor vehicle having a hybrid drive which includes an internal combustion engine having an injection system and an electric motor, in which in an operating situation, in which the motor vehicle is driven by the electric motor and the internal combustion engine is turned off,...

Heavy duty pressure injection time pressure fuel injection system
11/14/13 - 20130298876 - A fuel injection system that includes an electronic controller that senses engine speed, calculates energy required by an engine existing control unit based upon a signal sent to one or more diesel injection pressure and timing actuators and a plurality of gaseous fuel injectors that respond to commands from the...

Electronically controlled fuel injection valve
11/14/13 - 20130298877 - An electronically controlled fuel injection valve can independently control the time to inject fuel and the amount of fuel to be injected in response to a control signal sent from the operating condition of an engine unlike a traditional mechanical fuel injection valve, and employs a control method for fuel...