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| Number | Title | Issue Date |
| 7478631 | PZEV exhaust gas recirculation valve with activated carbon An exhaust gas recirculation valve includes a body including a passageway extending between an inlet and an outlet. The passageway communicates a flow of the exhaust gases. A bearing, disposed in the body, has a bearing passageway. A valve member is located in the p... | 01/20/2009 |
| 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 operating condition sensing section to sense a current engine operatio... | 04/08/2008 |
| 7302940 | Variable reluctance position sensor A position sensor is disclosed having a transducer formed by a Hall-effect device and permanent magnet secured within a housing on either side of a low permeability gap. A target secured to an active member, such as an EGR valve plunger moves within the gap. The tar... | 12/04/2007 |
| 7287378 | Divided exhaust manifold system and method A flow including air and exhaust gas is received at a boost pressure at a plurality of cylinders (103). Exhaust gas is expelled from a first subset of the plurality of cylinders (103) into a first divided exhaust manifold (103). Exhaust gas is e... | 10/30/2007 |
| 7269993 | Gas detecting apparatus, gas detecting method and fuel cell vehicle The gas detecting system of the present invention is equipped with a catalytic combustion type gas sensor 1a and a semiconductor type gas sensor 1b, in a gas detecting system 1 having an operating sate in which generation of electr... | 09/18/2007 |
| 7195007 | Apparatus for calculating amount of recirculated exhaust gas for internal combustion engine An intake pipe downstream of a throttle valve is interconnected with an exhaust pipe via an EGR supply pipe and an EGR control valve is disposed in the EGR supply pipe. An engine load ratio (KLoff) in the engine steady operation with the EGR gas being not supplied, ... | 03/27/2007 |
| 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 |
| 7047741 | Methods for low emission, controlled temperature combustion in engines which utilize late direct cylinder injection of fuel A method is provided for close control and adjustment of in-cylinder oxygen concentration levels together with boost adjustments to minimize harmful emissions during transients in engines which utilize late direct cylinder injection of fuel. EGR flow rates are adjus... | 05/23/2006 |
| 7013875 | Apparatus for controlling fuel injection of engine and method thereof In an engine provided with a variable valve event and lift mechanism that varies a valve lift and a valve operating angle of an intake valve, a pressure of fuel supplied to a fuel injection valve is controlled according to an opening period of the intake valve, whic... | 03/21/2006 |
| 6997170 | Exhaust gas recirculation (EGR) module having sensor integrated into cover (ESM) A new and improved EGR valve having a valve body having an inlet port and an outlet port with a valve member moveably supported within the valve body between the inlet and outlet ports. A control cap is connected to the valve body and contains an integrated sensor t... | 02/14/2006 |
| 6968815 | Actuating device for securing a camshaft of an engine of a motor vehicle in a start position An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft an... | 11/29/2005 |
| 6945236 | EGR control apparatus for engine According to the invention, an EGR control apparatus of an engine includes intake ports to which an intake passage is connected, the intake ports opening into each combustion chamber of the engine, an EGR port to which an EGR passage branching out from an exhaust pa... | 09/20/2005 |
| 6944530 | System and method for air flow and EGR flow estimation An exhaust gas recirculation system directs exhaust gasses from an exhaust manifold to an intake manifold of an internal combustion engine. The exhaust gasses travel from the exhaust manifold, first passing through a flow control valve and then through a measuring o... | 09/13/2005 |
| 6874488 | Exhaust gas deflector valve A gas deflector valve is incorporated with an engine cooling system, and located before an inlet to a heat exchanger used to cool hot gas from the engine as part of an EGR system. The gas diverter valve conducts the gas from the engine to the heat exchanger of the E... | 04/05/2005 |
| 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 degradation of the exhaust gas recirculation system. For example, the ... | 02/01/2005 |
| 6647971 | Integrated EGR valve and cooler An exhaust gas recirculation (EGR) cooling system includes a valve and a cooler. A motor opens the valve allowing hot fluid exhaust gas to flow into the valve. Cooling fluid continuously flows in and circulated around the valve, reducing the amount of hea... | 11/18/2003 |
| 6505614 | Connection formed by engagement of a tube and a valve surface A connection provides a fluid tight communication between a valve and a tube. The valve includes a first surface, a second surface, and an aperture extending through the valve between the first and second surfaces. The tube includes an end portion termina... | 01/14/2003 |
| 6502564 | Exhaust gas recirculation system module An exhaust gas recirculation (EGR) system module is provided that integrally includes an electric vacuum regulator (EVR) valve and a differential pressure (DP) sensor. The DP sensor measures a differential exhaust pressure at locations upstream and downst... | 01/07/2003 |
| 6470866 | Diesel engine exhaust gas recirculation (EGR) system and method Apparatus for and method of exhaust gas recirculation in an internal combustion engine that operates with charge air boost. An EGR valve has an inlet port communicated to the engine exhaust system upstream of a throttle valve in the tailpipe and an outlet... | 10/29/2002 |
| 6460523 | EGR system for an internal combustion engine An exhaust gas recirculation (EGR) system is provided having an electric vacuum regulator (EVR) valve mounted contiguously with a delta pressure feedback exhaust (DPFE) sensor to form an integral EVR/DPFE assembly. In turn, the EVR/DPFE assembly is mounte... | 10/08/2002 |
| 6431158 | Exhaust gas flow measurment device An internal combustion engine exhaust emission control system has a module for conveying exhaust gas from an engine exhaust system to an engine intake system. A valve selectively restricts the flow path. A pressure sensing passage communicates a pressure ... | 08/13/2002 |
| 6430929 | Turbocharger with integrated exhaust gas recirculation valve An Exhaust Gas Recirulation (EGR) valve is integrated onto a turbocharger by providing an EGR outlet in a flange in the volute of the turbine housing and a mating valve assembly extending from a mating flange with an elbow. The outlet direction of the elb... | 08/13/2002 |
| 6378507 | Exhaust gas recirculation valve having an angled seat A method of recirculating exhaust gas flow from an exhaust port to an intake port of an internal combustion engine, and an emission control valve assembly that regulates recirculating the exhaust gas flow. The emission control valve assembly comprises a v... | 04/30/2002 |
| 6378510 | Exhaust gas recirculation system for an internal combustion engine having an integrated vacuum regulator and delta pressure sensor An exhaust gas recirculation system for an internal combustion engine including a valve body having an exhaust port adapted for fluid communication with a source of exhaust gas, an intake port adapted for fluid communication with the intake manifold of an... | 04/30/2002 |
| 6253749 | Valve and valve control method A vacuum actuated valve uses a specially designed spring having a spring rate as a function of valve position. The spring rate function is determined using physical relationships between flow, pressure, and valve s position. The result is that the relatio... | 07/03/2001 |
| 6248041 | Engine control system linked to vehicles controls A linkage between an engine control (114) and vehicle controls, such as a transmission gear selector (100) and/or axle speed selector when the vehicle has a two-speed axle, providing input to the engine control that is additional to engine variable inputs... | 06/19/2001 |
| 6230694 | Calibration and testing of an automotive emission control module An automotive emission control module has an emission control valve containing a main flow passage having a valve member that controls fluid flow through the flow passage. An internal pressure sensing passage communicates pressure at one side of an orific... | 05/15/2001 |
| 6189520 | Integration of sensor, actuator, and regulator valve in an emission control module An EGR module has a valve containing a main flow passage having a valve member that controls exhaust gas flow through the passage. An internal pressure sensing passage communicates pressure at one side of an orifice in the main flow passage to a pressure ... | 02/20/2001 |
| 6170476 | Internal sensing passage in an exhaust gas recirculation module An electric EGR module has a main flow passage containing a valve member operated by a movable actuator wall of a fluid pressure actuator to control exhaust gas flow through the passage. The movable actuator wall bounds a portion of a variable volume cham... | 01/09/2001 |
| 6168134 | Exhaust gas recirculation valve with variable flow area A flow control valve having a controllable flow area which varies with the valve displacement. The flow control valve includes a poppet-type valve element mounted to reciprocate between a closed and open position in a valve cavity formed in a valve housin... | 01/02/2001 |
| 6138652 | Method of making an automotive emission control module having fluid-power-operated actuator, fluid pressure regulator valve, and sensor An EGR module has an emission control valve body containing a main flow passage having a valve member that controls exhaust gas flow through the passage. An internal pressure sensing passage communicates pressure at one side of an orifice in the main flow... | 10/31/2000 |
| 6116224 | Automotive vehicle having a novel exhaust gas recirculation module In an automotive vehicle powered by an internal combustion engine, an EGR flow path includes an exhaust emission control valve between an exhaust system of the engine and an intake system of the engine. The valve is operated by an actuator having a body m... | 09/12/2000 |
| 6095123 | Valve and valve control method A vacuum actuated valve uses a specially designed spring having a spring rate as a function of valve position. The spring rate function is determined using physical relationships between flow, pressure, and valve s position. The result is that the relatio... | 08/01/2000 |
| 6062535 | Exhaust gas recirculation valve with variable flow area A flow control valve having a controllable flow area which varies with the valve displacement. The flow control valve includes a poppet-type valve element mounted to reciprocate between a closed and open position in a valve cavity formed in a valve housin... | 05/16/2000 |
| 6026791 | Exhaust gas recirculation valve with integral feedback proportional to volumetric flow A control valve for an EGR system employs a variable pressure actuator connected to a valve for metering EGR flow and a differential pressure valve connected to supply actuation pressure to the actuator. The differential pressure valve incorporates a prop... | 02/22/2000 |
| 6014961 | Internal combustion engine intake sensing system A pressure sensing system for an internal combustion engine including an intake manifold (20) and an exhaust manifold (24), with an EGR valve assembly (30) mounted thereto. A sensor housing (60) includes three absolute sensors (80, 82, 84) for measuring a... | 01/18/2000 |
| 5988149 | Pressure sensing system for an internal combustion engine An internal combustion engine including a pressure sensing system. A first (80) and a second (82) absolute pressure sensor are located in a main sensor housing (60) mounted near an intake manifold (20). The first pressure sensor (80) measures the pressure... | 11/23/1999 |
| 5970961 | Valve control method A valve control method for controlling a closed valve position of an exhaust gas recirculation valve for an internal combustion engine includes a feedback correction loop generating a feedback variable by comparing the output of a valve position sensor to... | 10/26/1999 |
| 5950604 | Engine, engine manufacturing method and engine heat A heat blocking member is fixed to a part of an engine in order to protect a signal wire or the like situated nearby from heat generated by the exhaust recirculation device. The exhaust recirculation device comprises an exhaust recirculation passage conne... | 09/14/1999 |
| 5722632 | Temperature-compensated exhaust gas recirculation system An exhaust gas recirculation (EGR) system (10) includes a proportional solenoid valve (28) that regulates vacuum pressure to a vacuum-actuated EGR valve (12). The proportional solenoid valve (28) includes an inductive coil (30) that generates a magnetic f... | 03/03/1998 |
