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| Number | Title | Issue Date |
| 8109258 | Method of diagnosing a slow EGR system in an internal combustion engine There is disclosed a method for diagnosing slow EGR response in an internal combustion engine equipped with an electronic controller with memory. In one embodiment, the method includes passing an EGR setpoint value and an actual EGR value through first order filters... | 02/07/2012 |
| 7913674 | Abnormality determination device and method for EGR device, and engine control unit An abnormality determination device for an EGR device, which is capable of determining the abnormality of the EGR device properly without interrupting the EGR operation. An ECU of an internal combustion engine detects an amount of fresh air drawn into a combustion c... | 03/29/2011 |
| 7810476 | Method and apparatus for estimating exhaust temperature of an internal combustion engine The invention comprises a method and an article of manufacture to estimate exhaust gas temperature of an internal combustion engine during ongoing operation of the engine. This comprises determining states of a plurality of parameters of a combustion charge. A heat ... | 10/12/2010 |
| 7565901 | EGR system for internal combustion engine When the opening angle of an intake control valve is limited to a given opening angle by fuel cut, an EGR apparatus is activated, and a malfunction of the EGR apparatus is diagnosed on the basis of a change in intake manifold pressure before and after the activation... | 07/28/2009 |
| 7484503 | System and method for diesel particulate filter regeneration A method for regenerating a diesel particulate filter (20) in the exhaust system (16) of an engine (12). When a request to regenerate the device is issued, a control system (14) operates the engine to begin conditioning exhaust. The condi... | 02/03/2009 |
| 7392797 | EGR failure determination system and control system for internal combustion engine An EGR failure determination system for an internal combustion engine, which is capable of accurately determining failures of both an external EGR device and an internal EGR device, irrespective of whether the EGR amount is large or small, thereby making it possible... | 07/01/2008 |
| 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 execution of the foreign-matter removal operation. The ECU controls an act... | 05/13/2008 |
| 7360525 | Control system for internal combustion engine A control system for an internal combustion engine wherein fuel injection timing is determined according to a detected engine operating condition. An actual ignition timing of the fuel is detected and an ignition delay correction amount is calculated wherein the act... | 04/22/2008 |
| 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 exhaust gas recirculation (EGR) valve driven in response to an EGR valv... | 01/22/2008 |
| 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 on the EGR error. Operation of an engine is regulated based on the fu... | 01/22/2008 |
| 7318341 | Method and device for monitoring a signal A method and a device for monitoring a signal, in particular a pressure signal that characterizes the pressure differential at the input and output of an exhaust after-treatment system, are described. Errors are recognized on the basis of the occurrence of oscillati... | 01/15/2008 |
| 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 air-fuel ratio to reduce engine misfire while improving vehicle fuel econ... | 01/15/2008 |
| 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 accuracy of in-cylinder temperature. An ECU of an ERG control system calcu... | 01/01/2008 |
| 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 supercharges intake air in an intake passage (20) using... | 12/11/2007 |
| 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 detection can be prevented to enable failure determination for an EGR s... | 10/02/2007 |
| 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, and an exhaust-gas-recirculation system. A linear oxygen sensor is arra... | 09/11/2007 |
| 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 intake passage and exhaust passage, and an exhaust gas flow rate control... | 08/28/2007 |
| 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 gas recirculation passage. An EGR valve adjusts a flow passage area o... | 07/31/2007 |
| 7243048 | Fault detection system and method using multiway principal component analysis A fault detection system and method is provided that facilitates detection of faults that are manifest over a plurality of different operational phases. The fault detection system and method use multiway principal component analysis (MPCA) to detect fault from turbi... | 07/10/2007 |
| 7228852 | Quick EGR flow restriction test based on compensated mass flow differential An engine control system that monitors flow restriction through an exhaust gas recirculation (EGR) system of an engine includes a first module that calculates a test EGR mass flow rate based on a first average EGR mass flow rate when the EGR system is in an EGR OFF ... | 06/12/2007 |
| 7225764 | Method for operating a combustion engine A method for operating an internal combustion engine is provided. By taking into account a setpoint temperature Tsetpoint of the internal combustion engine which depends on external and internal boundary conditions when controlling and/or regulating tempe... | 06/05/2007 |
| 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 than a portion where a suction air path (3) joins an exh... | 04/10/2007 |
| 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, an intake-manifold pressure and an ambient pressure are modeled. The... | 12/05/2006 |
| 7143993 | Exhaust gas recirculation valve having a rotary motor An exhaust gas recirculation valve is provided. The exhaust gas recirculation valve has a base, a spring biasing the valve closed, and an actuator including a rotary motor and a linearly displaceable shaft that is coupled to the motor's rotor. The valve includes a v... | 12/05/2006 |
| 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 responsive to a valve control signal, a lambda sensor producing a lambda s... | 11/28/2006 |
| 7124751 | Electronic exhaust gas recirculation valve control An EGR valve position control method controls a position of an EGR valve according to a pressure change across the valve and a desired EGR valve position. The method calculates a desired EGR valve position and generates one or more duty cycle control terms based on ... | 10/24/2006 |
| 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 driven intake valve in response to a command signal for opening the i... | 09/26/2006 |
| 7108751 | Method and apparatus for determining consumable lifetime A plasma processing device comprising a gas injection system is described, wherein the gas injection system comprises a gas injection assembly body, a consumable gas inject plate coupled to the gas injection assembly body, and a pressure sensor coupled to a gas inje... | 09/19/2006 |
| 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 EGR system. If at least either one of first and second off-mode inta... | 09/12/2006 |
| 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 and estimated cylinder mass flow and exhaust gas recirculation flow ... | 09/12/2006 |
| 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 based on a value of a vacuum sensor upon elapse of a predetermine time, ... | 09/05/2006 |
| 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 at a predetermined time corresponding to a normally closed position o... | 09/05/2006 |
| 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 gases from the engine to an intake system of the engine, and an exhaust ... | 08/29/2006 |
| 7096113 | Method for controlling a regeneration valve of a fuel vapor retention system The invention relates to an operating method for a regeneration valve of a fuel vapor retention system, particularly of a tank vent valve for regenerating an activated carbon filter during which the regeneration valve is controlled by a control signal, whereby the c... | 08/22/2006 |
| 7076953 | Method for controlling an engine with VGT and EGR systems A method for controlling an internal combustion engine is provided. The engine includes a variable geometry turbocharger (VGT) system and an exhaust gas recirculation (EGR) system. In a boost mode, the VGT system is controlled with a closed loop based on boost press... | 07/18/2006 |
| 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 this context, the internal combustion engine includes at least one adsor... | 07/11/2006 |
| 7066144 | Control device and method for internal combustion engine A control device for an internal combustion engine comprising an EGR passage (22) for connecting an intake passage (17) and an exhaust passage (18) with each other, an EGR valve (24) provided in the EGR passage (22), and an intake ... | 06/27/2006 |
| 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, measures an actual intake pipe pressure PMON upon elapse of a predetermi... | 06/27/2006 |
| 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 unit time of a second feedback amount of exhaust gas recirculation (EG... | 06/20/2006 |
| 7055375 | Leakage detecting apparatus for an exhaust gas re-circulating system of an engine A leakage detecting apparatus includes a re-circulating passage for re-circulating an exhaust gas from an exhaust system to an air intake system in the engine, a re-circulating valve disposed in the re-circulating passage to control a flow rate of the re-circulating... | 06/06/2006 |
