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7620490 |
Fuel injection control device for internal combustion engine
The invention provides a fuel injection control device for an internal combustion engine that can improve the accuracy of combustion control regarding smoke suppression. The fuel injection control...
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7614231 |
Method and system to operate diesel engine using real time six dimensional empirical diesel exhaust pressure model
A method to estimate real-time exhaust pressure in a compression ignition engine with variable geometry turbocharger and an EGR by adding the turbocharger RPM, the engine RPM, EGR value position...
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7591135 |
Method and system for using a measure of fueling rate in the air side control of an engine
Methods and systems for using a measure of fueling rate in the air side control of an engine. By using a measure of the fueling rate, the air side control may, for example, anticipate the future...
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7574298 |
Fuel injection controller
A fuel injection controller of an internal combustion engine decreases a target intake quantity stepwise and increases an opening degree command value of an EGR valve stepwise when the controller...
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7562649 |
Combustion control system based on in-cylinder condition
Combustion control of a diesel engine is achieved, such that the engine has a monotonic relation between intake manifold pressure and engine torque. For a given engine speed, fuel injection...
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7542865 |
Abnormality determination device of cylinder pressure sensor
An abnormality determination device of a cylinder pressure sensor calculates a gain (sensing sensitivity coefficient) and an offset (bias) indicating an output characteristic of the cylinder...
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7536999 |
Air-fuel ratio control apparatus
An air-fuel ratio control apparatus is basically provided with an exhaust system, a first sensor and a controller. The exhaust system includes an exhaust channel with a main catalytic converter...
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7536252 |
Method and system for controlling a flowrate of a recirculated exhaust gas
A method and system for controlling an exhaust gas recirculation (EGR) system is provided. The EGR system recirculates a portion of an exhaust through an inlet portion of the turbomachine. The EGR...
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7536244 |
Failure diagnostic apparatus and method for an air-fuel ratio sensor
A failure diagnostic apparatus is provided with an offset power source for offsetting a ground-side voltage of an air-fuel ratio sensor, an activation state judging unit for judging whether the...
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7533662 |
Apparatus for and method of controlling air-fuel ratio of engine
A technique of controlling an air-fuel ration for an engine, in which an air-fuel ratio feedback correction coefficient α to correct an amount of fuel injection into the engine is computed based...
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7522994 |
Exhaust control system implementing fuel quality detection
An exhaust control system for a power source is disclosed. The exhaust control system includes a navigation tool and a processor. The navigation tool is configured to detect a geographical location...
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7513245 |
Engine torque control apparatus and method for adjusting engine torque control apparatus
An engine torque control apparatus is applied to an engine control system comprising an engine for rotating an output shaft by using torque generated through combustion in cylinders. In the...
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7503320 |
Method of operating an engine at idle speed for operational diagnosis of a purge valve
This in particular involves testing the operation of a fuel vapor purge valve ( 31 ). The engine ( 1 ) is running at idle. An idle speed controller (ISC, 47 ) acts on the engine idle speed. At a...
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7502683 |
Device and method for determining an adjustable variable of an internal combustion engine regulator
A device is designed for determining a pre-set air/fuel ratio in the combustion chamber of a cylinder of an internal combustion engine. The device is further designed for determining a filtered,...
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7497198 |
System and method for controlling vehicle operation in response to fuel vapor purging
A hybrid vehicle propulsion system, comprising of an engine having at least one combustion cylinder configured to selectively operate in one of a plurality of combustion modes, wherein a first...
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7493896 |
Exhaust gas recirculation estimation system
A control system and method for an exhaust gas recirculation (EGR) system of an engine includes a first sensor that senses fresh mass air flow, a second sensor that senses charge air flow, where...
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7484504 |
Air-fuel ratio control system and method for internal combustion engine
An air-fuel ratio control system includes: a catalyst; an oxygen concentration sensor; an integral value calculation portion that calculates an integral value of a deviation updated by integrating...
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7480558 |
Method and apparatus for controlling a homogeneous charge compression ignition engine
The invention comprises a method for controlling operation of a homogeneous charge combustion ignition engine operating in an auto-ignition mode. The method comprises determining a desired...
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7477982 |
Exhaust gas recirculation system
An exhaust gas recirculation (EGR) system may include an EGR flowpath configured to route a portion of exhaust gases produced by an engine back to an air intake of the engine. The system may...
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7474954 |
EGR differential pressure sensor auto calibration method
A method for operating an electronic controlled internal combustion engine with an electronic control unit (ECU) having at least nonvolatile memory and tables resident therein to automatically...
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7474953 |
Process for determining particle emission in the exhaust fume stream from an internal combustion engine
A process for determining particle input into a particle filter arranged in the exhaust fume stream of an internal combustion engine makes it possible to determine the mass of deposited particles...
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7472685 |
Control method and control apparatus of internal combustion engine
An internal combustion engine includes a throttle controlling mechanism; a valve characteristic varying mechanism which controls an internal EGR rate by the control of an overlap period Pa and a...
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7469692 |
Exhaust gas recirculation system
A power system including an exhaust producing engine, an exhaust system and an exhaust gas recirculation (EGR) system is provided. The EGR system may include an EGR flowpath and an air intake...
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7469181 |
High load operation in a homogeneous charge compression ignition engine
A homogeneous charge compression ignition engine is set up by first identifying combinations of compression ratio and exhaust gas percentages for each speed and load across the engines operating...
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7469177 |
Distributed control architecture for powertrains
Systems and methods for controlling automotive powertrains using a distributed control architecture are disclosed. A distributed control system may include a supervisory control unit for...
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7467614 |
Pedal position and/or pedal change rate for use in control of an engine
Systems and methods for using pedal position and/or pedal change rate in the fuel side and/or air side control of an engine. By knowing the pedal position and/or pedal rate, an engine controller...
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7461627 |
Hybrid combustion in a diesel engine
A compression ignition engine ( 10 ) has a control system ( 40 ), one or more combustion chambers ( 12 ), and fuel injectors ( 42, 44 ) for injecting fuel into the combustion chambers. The control...
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7447587 |
Cylinder to cylinder variation control
Method and system for controlling cylinder to cylinder variations of undesirable emissions in exhaust gas of engines with exhaust gas recirculation. An engine model is used to predict the intake...
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7444220 |
Power output apparatus for hybrid vehicle
Under a switchover operation of an EGR valve from OFF to ON or from ON to OFF, the control procedure of the invention keeps an engine power demand Pe*, which is to be output from an engine and is...
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7437874 |
System and method for backpressure compensation for controlling exhaust gas particulate emissions
A method for controlling exhaust gas particulate emissions from a compression ignition internal combustion engine having a variable geometry turbocharger (VGT) includes the steps of determining...
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7430483 |
Method and apparatus for diagnosing a mechanism
A method of analyzing variations in an indicator of the behavior of a mechanism, in which noise is extracted, and any discontinuities from an indicator in order to obtain a trend, variations in the...
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7421333 |
Monitoring system for internal combustion engine
A technique is provided which can specify a member in which malfunction really occurs when there exists malfunction in at least one of a plurality of state values representing the state of an...
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7398773 |
EGR recovery system and method
An EGR recovery system and method includes calculating a transient volume of EGR sufficient to maintain NOx emitted by an engine below a predetermined level during a period of transient operation...
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7398649 |
System and method for influencing the induction gas temperature in the combustion chamber of an internal combustion engine
The invention relates to a system and method for use in a homogeneous charge compression ignition (HCCI) combustion engine that is preferably equipped with an exhaust gas recirculation device. This...
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7398149 |
Control system for internal combustion engine
A control system for an internal combustion engine having a compressor wheel and a turbine wheel connected with the compressor wheel and rotationally driven by kinetic energy of exhaust gases from...
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7383118 |
Control apparatus for internal combustion engine
This control apparatus obtains a relation (trade-off line) between NOx generation amount and PM generation amount with EGR ratio serving as a parameter from an NOx generation amount estimation...
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7356403 |
Control apparatus and process for internal combustion engine
A control apparatus for an internal combustion engine with an exhaust recirculation system includes an acceleration request sensing section to sense a driver's acceleration request; and an engine...
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7349792 |
System for a virtual liquid sensor
A system for a virtual liquid sensor is disclosed including a method for operating the liquid sensor. The method includes determining a rate of generating condensation with respect to the...
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7349791 |
Control apparatus for internal combustion engine
An acceleration request is detected in accordance with an accelerator opening PA (time t 3 in FIG. 5 B). If the detected acceleration request is a moderate acceleration request, an idle opening...
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7346446 |
Fuel reforming estimation in HCCI engines
An internal combustion engine employs exhaust gas recompression and fuel injection during the recompression as part of an overall homogeneous charge compression ignition control. In-cylinder fuel...
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7328577 |
Multivariable control for an engine
A multivariable controller that models the interaction between groups of sensors and groups of actuators during the operation of an engine. By accounting for the interactive effects that a group of...
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7321820 |
Model-based inlet air dynamics state characterization
An engine control system that having an exhaust gas recirculation (EGR) valve includes a first module that determines an EGR error and a second module that calculates a fuel injection timing based...
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7320219 |
Method for controlling an internal combustion engine using model based VGT/EGR control
A method for controlling an internal combustion engine using model based control, the engine including a variable geometry turbocharger (VGT) driven in response to a VGT command signal and/or an...
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7314041 |
EGR control system for internal combustion engine
An EGR control system that is capable of controlling the amount of recirculation of high-temperature and low-temperature recirculated gases, with high accuracy, to thereby improve the control...
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7292929 |
System for a virtual dew point sensor
A system for a virtual dew point sensor is disclosed including a method for operating the virtual dew point sensor. The method includes determining a first humidity ratio indicative of the humidity...
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7275525 |
Control apparatus for an internal combustion engine
A control apparatus for an internal combustion engine can compensate for a variation of intake pressure resulting from various factors whereby a failure detection area can be expanded, and false...
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7275374 |
Coordinated multivariable control of fuel and air in engines
Methods and systems for controlling a diesel engine using a combined fuel and air-side controller are disclosed. An illustrative method may include the steps of providing a combined fuel and...
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7272487 |
Method for monitoring combustion stability of an internal combustion engine
The present invention relates to a method for monitoring combustion stability of an HCCI internal combustion engine equipped with a crankshaft, an intake manifold and at least one cylinder, wherein...
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7267117 |
Method and device for controlling the exhaust gas recirculation in an internal-combustion engine based on the measurement of the oxygen concentration in the gaseous mixture taken in by the engine
A method and a device for controlling the exhaust gas recirculation in an internal-combustion engine are described herein. The engine is provided with an air-intake system, a gas-exhaust system,...
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7263428 |
Cylinder inflow exhaust gas amount calculation system of internal combustion engine and intake passage inflow exhaust gas amount calculation system of internal combustion engine
A cylinder inflow exhaust gas amount calculation system of an internal combustion engine provided with an intake passage, an exhaust passage, an exhaust gas recirculation passage connecting the...
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