|
Match
|
Document |
Document Title |
|
|
7370644 |
EGR control apparatus and method for operating the same
An ECU calculates a foreign-matter accumulation index base on a total flow rate of EGR gas integrated since the previous execution of a last foreign-matter removal operation until the present...
|
|
|
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...
|
|
|
7318409 |
Vehicle engine control system utilizing humidity sensor
A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired...
|
|
|
7305828 |
Engine boost pressure control
A controller ( 70 ) controls the boost pressure of an internal combustion engine ( 60 ) comprising two intake/exhaust units, each intake/exhaust unit comprising a turbocharger ( 10 ) which...
|
|
|
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...
|
|
|
7251555 |
Exhaust gas recirculation system abnormality diagnosis device
An exhaust gas recirculation passage connects an exhaust passage with an intake passage. A cooling device is mounted to the exhaust gas recirculation passage for cooling exhaust gas in the exhaust...
|
|
|
7225764 |
Method for operating a combustion engine
A method for operating an internal combustion engine is provided. By taking into account a setpoint temperature T setpoint of the internal combustion engine which depends on external and internal...
|
|
|
7201158 |
Exhaust gas recirculation control device for diesel engine
An exhaust gas recirculation control device in a diesel engine, capable of suppressing NOx and smoke discharged. A first temperature sensor ( 11 ) is provided at a portion more on the upstream side...
|
|
|
7146268 |
Method and device for operating an internal combustion engine having exhaust-gas recirculation
A method and a device for operating an internal combustion engine having exhaust-gas recirculation are provided, which make it possible to dispense with an ambient-pressure sensor. In this context,...
|
|
|
7140360 |
System for controlling exhaust emissions produced by an internal combustion engine
A system for controlling the air-to-fuel ratio in an internal combustion engine includes an air intake conduit coupled to an intake manifold, an EGR valve disposed in-line with an EGR conduit...
|
|
|
7111594 |
Method of operating internal combustion engine including electromagnetically driven intake valves
A method of operating an internal combustion engine having an; electromagnetically driven intake valves for a vehicle. With the method, deviation of an opening operation of the electromagnetically...
|
|
|
7107143 |
Estimation of oxygen concentration in the intake manifold of an unthrottled lean burn engine
A method of estimating oxygen concentration in the intake of a lean burn engine is accomplished during throttled operation by repeatedly combining determined air/fuel ratio and intake mass air flow...
|
|
|
7104259 |
Diagnostic device for exhaust gas recirculation system
A failure diagnostic device for an exhaust gas recirculation (EGR) apparatus, which can detect an intake pipe pressure at a high accuracy with a simple control and can prevent false diagnosis of an...
|
|
|
7100586 |
Failure diagnosis system for exhaust gas recirculation device
An engine ECU of a failure diagnosis system for an EGR device starts the EGR device by opening an EGR valve upon establishment of monitor conditions, detects an actual intake pipe pressure PMON...
|
|
|
7100585 |
Method and device for diagnosing the operating condition of an internal combustion engine exhaust gas recycling valve
A method for diagnosing the operating condition of an internal combustion engine exhaust gas recycling valve. The method acquires a measurement value of a reference position of the recycling valve...
|
|
|
7096861 |
Control system for internal combustion engine
A control system for an internal combustion engine is disclosed. The engine has an exhaust gas recirculation device which includes an exhaust gas recirculation passage for recirculating exhaust...
|
|
|
7073465 |
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...
|
|
|
7066160 |
Failure diagnosis system for exhaust gas recirculation device
An engine ECU of a failure diagnosis system for an EGR device fixes a VVT to a most retarded position upon establishment of a failure monitor condition of the EGR device, starts the EGR device,...
|
|
|
7062910 |
Engine control system
In a case where an oscillation frequency per unit time of a first feedback amount of supercharging pressure (VNT) control exceeds a judgment value, or in a case where an oscillation frequency per...
|
|
|
6994077 |
Control system for internal combustion engine
Cylinders of a diesel engine 1 are provided with cylinder pressure sensors 29 a to 29 d for detecting combustion chamber pressures. An electronic control unit (ECU) 20 of the engine selects...
|
|
|
6993909 |
EGR-gas temperature estimation apparatus for internal combustion engine
An EGR-gas temperature estimation apparatus for an internal combustion engine which has an exhaust circulation pipe and an EGR-gas cooling apparatus. The estimation apparatus obtains the cooling...
|
|
|
6990967 |
Potentiometer device for determination of valve positions
A potentiometer device, for detecting valve positions, wherein a voltage signal U s is sendable to a control unit having an A/D converter, including a carrier element on which at least one slider...
|
|
|
6968833 |
Diagnostic system for catalytic converter using exhaust gas recirculation system that can detect exhaust pressure buildup
A method is described for detecting exhaust pressure buildup in an engine's exhaust system using information from an exhaust gas recirculation system having a valve.
|
|
|
6957642 |
Exhaust gas recirculation control system
An engine exhaust gas cleaning apparatus is provided to suppress EGR ratio fluctuations when the excess air ratio is adjusted and thereby stabilize the engine operating performance. The engine...
|
|
|
6935310 |
Method and apparatus for detecting abnormal combustion conditions in reciprocating engines having high exhaust gas recirculation
An apparatus and method to detect abnormal combustion conditions for use as a feedback control of an EGR (Exhaust Gas Recirculation) controlled reciprocating engine using ionization signals is...
|
|
|
6917873 |
Control of multiple supercharged compression ignition engines having EGR
A vehicle system controls a compression ignition internal combustion engine equipped with a supercharger system including a plurality of superchargers. The compression ignition internal combustion...
|
|
|
6899093 |
Control system for NOx control for cam phaser and/or EGR systems
A vehicle control system regulates oxides of nitrogen levels in vehicle emissions. Recirculation of exhaust gas in an engine is controlled with an exhaust gas regulator valve and/or a cam phaser....
|
|
|
6876933 |
Method and an apparatus for estimating an amount of drawn air of a cylinder of an internal-combustion engine and a method and an apparatus for controlling the amount
A method and an apparatus for estimating an amount of drawn air of a cylinder and a method and an apparatus for controlling the amount of drawn air, are presented. An estimated value of an amount...
|
|
|
6868329 |
Control method of EGR system of engine
A control method of an EGR system of an engine capable of effectively performing an EGR control at a time of rapid acceleration. For this purpose, an intake air flow rate of the engine is obtained,...
|
|
|
6850834 |
Method and system for detecting degradation of EGR flow delivery
A method for determining EGR flow in an internal combustion engine, such flow being from an exhaust manifold of the engine to an intake manifold of the engine through an EGR valve. The method...
|
|
|
6848434 |
System for diagnosing operation of an EGR cooler
A system is disclosed for diagnosing operation of an EGR cooler disposed in-line with an EGR conduit fluidly coupled between an intake manifold and an exhaust manifold of the engine such that...
|
|
|
6848418 |
External exhaust gas recirculation on board diagnostic using EGR effect on a combination of engine operating parameters
A system is described for determining degradation of an exhaust gas recirculation system of an internal combustion engine. This method utilizes a combination of parameters to accurately determine...
|
|
|
6837226 |
System for diagnosing EGR valve, actuator and sensor related failure conditions
An EGR fault/failure determination system for an internal combustion engine is operable to monitor a number of EGR system operational parameters and diagnose various EGR-related fault and failure...
|
|
|
6826903 |
Exhaust gas recirculation system having cooler
An exhaust gas recirculation (EGR) system of an internal combustion engine has an EGR cooler in an EGR passage connecting an exhaust manifold with an intake manifold. The EGR cooler cools EGR gas...
|
|
|
6823854 |
Device for preventing an exhaust gas recirculation valve from sticking after switching off an internal combustion engine
The invention relates to an exhaust gas recirculation device for an internal combustion engine, especially for a motor vehicle, comprising an exhaust gas recirculation line for recirculating...
|
|
|
6802302 |
System for diagnosing EGR flow rate operation
A system is disclosed for diagnosing EGR flow rate operation in an internal combustion engine includes an intake manifold and an exhaust manifold coupled to the engine and an EGR conduit for...
|
|
|
6722350 |
Method for operating an internal combustion engine
An internal combustion engine ( 1 ), especially of a motor vehicle, is described. The engine ( 1 ) is provided with a combustion chamber ( 4 ) into which fuel can be injected in a first operating...
|
|
|
6708676 |
EGR control unit and EGR control method
The present invention relates to an EGR control unit and EGR control method for controlling an EGR adjusting apparatus, and it is an object of the invention to calculate an EGR rate at a low cost...
|
|
|
6701245 |
Method for the functional diagnosis of an exhaust recycling system on an internal combustion engine
The invention relates to the diagnosis of an exhaust gas recycling valve, whereby, on switching off the internal combustion engine, the throttle valve and the exhaust recycling valve are closed and...
|
|
|
6698406 |
Pressure sensor for an internal combustion engine
A pressure sensor ( 40 ) is mounted in an internal combustion engine ( 1 ) for determining induction pipe pressure (P) in a connecting line ( 30 ) between the induction pipe ( 5 ) and the fuel...
|
|
|
6687601 |
System for diagnosing an air handling mechanism of an internal combustion engine
A system for diagnosing an air handling mechanism of an internal combustion engine includes an air handling mechanism actuator, an air handling mechanism position sensor, a sensor associated with...
|
|
|
6666201 |
System and method for diagnosing EGR performance using NOx sensor
A method and system for diagnosing a condition of an EGR valve used in an engine system. The EGR valve controls the portion exhaust gases produced by such engine system and fed back to an intake of...
|
|
|
6659095 |
Diagnosis system for upstream gauge sensor, downstream absolute pressure sensor
A method for controlling an engine during sensor degradation uses a remaining active sensor. The engine has an exhaust gas recirculation system utilizing pressure sensors upstream and downstream of...
|
|
|
6659091 |
Method for compensating for abnormal changes in the gas flow passing through an exhaust gas recirculation line of an internal combustion engine
The goal is to reliably diagnose and compensate for a change in the gas flow passing through an exhaust gas recirculation line. For this purpose, according to a first method, the mass flow passing...
|
|
|
6647972 |
State determining apparatus for exhaust gas recirculation system
A state determining apparatus for an exhaust gas recirculation system is provided for appropriately determining the state of an exhaust gas recirculation system including an EGR passage. An exhaust...
|
|
|
6564778 |
Fuel supply control system for internal combustion engine
A fuel supply control system for controlling a fuel amount to be supplied to an internal combustion engine having an exhaust gas recirculation mechanism comprising an exhaust gas recirculation...
|
|
|
6497227 |
System for diagnosing fault conditions associated with an air handling system for an internal combustion engine
A system for diagnosing fault conditions associated with an air handling system for an internal combustion engine includes an air handling control mechanism responsive to a mechanism command to...
|
|
|
6484704 |
Rotary valve actuating system
A system and a method for recirculating a flow of exhaust gases. The system comprises a passage through which the exhaust gas flow passes, a valve movable in the passage between a generally open...
|
|
|
6467469 |
EGR valve position control system
An EGR valve position control system includes an EGR valve manager responsive to an EGR valve command to drive an EGR valve actuator. The EGR valve manager is operable to schedule control gains as...
|
|
|
6457461 |
EGR and VGT system diagnostics and control
A system and method for diagnosing a component failure in an internal combustion engine having an exhaust gas recirculation system and a variable geometry turbocharger for diverting exhaust gas...
|