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| Number | Title | Issue Date |
| 7320297 | Internal combustion engine There is provided an internal combustion engine that uses a blended fuel consisting of hydrocarbon and alcohol, and can efficiently operate relative to a wide range of required load. The internal combustion engine includes: intake ports 4a and 4... | 01/22/2008 |
| 7269497 | Method and device for engine control in a motor vehicle A method for engine control in a motor vehicle is specified, in particular a method for controlling a combustion engine in a motor vehicle, namely for optimally adjusting a quantity of exhaust gas, which is recirculated, in an exhaust gas recirculation branch, from ... | 09/11/2007 |
| 6868841 | Deflector by-pass valve for gas from the engine A deflector by-pass valve for engine exhaust gas, used with an exhaust gas recirculation system on an automobile, is integrated with the cooling system, and located before the inlet for the engine's hot gas to the water/gas heat exchanger of the EGR system. The defl... | 03/22/2005 |
| 6848435 | Control system for compression ignition internal combustion engine A control system for a compression ignition internal combustion engine, which is capable of properly estimating the temperature of combustion gases, and thereby accurately controlling the temperature of working medium according to the estimated temperature of the co... | 02/01/2005 |
| 6681171 | Condensation control for internal combustion engines using EGR A system and method for controlling an internal combustion engine to reduce or eliminate formation of EGR condensate monitor current ambient and operating conditions to determine whether conditions are favorable for condensation of EGR gases, and control ... | 01/20/2004 |
| 6625974 | Method for operating an internal combustion engine An internal combustion engine (1), especially of a motor vehicle, is described which is provided with a combustion chamber (4) into which fuel can be injected in a first operating mode during a compression phase and in a second operating mode during an in... | 09/30/2003 |
| 6601387 | System and method for determination of EGR flow rate A system and method for determining EGR flow in a multi-cylinder internal combustion engine include determining specific heat of the exhaust gas based on current engine operating conditions and determining EGR flow rate based on the determined specific he... | 08/05/2003 |
| 6574956 | Apparatus and method for interrupting regeneration of a particulate filter in a diesel engine The invention relates to a method for interrupting the regeneration of a particulate filter in the exhaust gas system of a diesel engine to protect the filter against destructive overheating. In this case, an electronic control unit calculates a desired m... | 06/10/2003 |
| 6313977 | Circuit configuration for regulating the current fed to an electromechanical component in a motor vehicle A circuit configuration serves to regulate in particular a coil current for a hydraulic pressure regulating valve of a motor vehicle transmission. A current measuring resistor configured as a thick-film resistor and a temperature sensor, that detects a tr... | 11/06/2001 |
| 5931140 | Internal combustion engine thermal state model An internal combustion engine system is reticulated into an exhaustive network of interdependent temperature nodes and heat transfer branches for estimating thermal states at various nodes as required in engine control and diagnostic operations. All mater... | 08/03/1999 |
| 5035228 | Exhaust-gas recycling device for an internal-combustion engine, epsecially a diesel engine In an exhaust-gas recycling device for an internal combustion engine, especially a diesel engine, in which the quantity of the recycled exhaust-gas part stream is controlled by an exhaust-gas recycling valve equipped with a diaphragm, the material of whic... | 07/30/1991 |
| 4563998 | Control arrangement for an internal combustion engine A control arrangement for an internal combustion engine equipped with vacuum-operated control devices includes a method and apparatus for applying a vacuum to a control device, retaining the vacuum for a specified time or under specified engine operating ... | 01/14/1986 |
| 4540153 | Temperature sensitive negative-pressure control valve A temperature sensitive negative-pressure control valve is provided with a pressure adjusting means functioning to output a constant negative-pressure which is determined by the biasing force of an adjusting spring, and a temperature sensitive device for ... | 09/10/1985 |
| 4411241 | Method of controlling EGR for internal combustion engines An internal combustion engine has a primary intake passage including a primary throttle valve for supplying engine cylingers with an air-fuel mixture under a full range of loads, a secondary intake passage including a secondary throttle valve for supplyin... | 10/25/1983 |
| 4335699 | Exhaust gas recirculation system Apparatus for controlling exhaust gas recirculation in an internal combustion engine employs a first control valve in an exhaust gas recirculation passageway, a second control valve in an air conduit connecting the intake passage to atmosphere through sel... | 06/22/1982 |
| 4334515 | Temperature responsive, pressure operated diaphragm valve assembly for automobile engine A temperature responsive, pressure operated diaphragm valve assembly for use in association with an automobile internal combustion engine comprises a valve housing having a working chamber on one side of a diaphragm member, a biasing spring used to urge t... | 06/15/1982 |
| 4231336 | Exhaust gas recirculation system for an internal combustion engine An exhaust gas recirculation system for an internal combustion engine of the back pressure control type which includes a chamber space which is positioned at a middle portion of an exhaust gas recirculation passage and upstream of an exhaust gas recircula... | 11/04/1980 |
| 4224909 | Exhaust gas recirculation system for an internal combustion engine In an exhaust gas recirculation system for an internal combustion engine of the back pressure control type which provides, by a vacuum-operated control valve, a pressure chamber of substantially constant and nearly atmospheric pressure at a middle portion... | 09/30/1980 |
| 4221204 | Thermal timer valve A thermal timer valve for temperature-dependent operation of accessory devices of a fuel mixture preparation system of a combustion engine. The valve has a membrane chamber acted upon by intake pipe or manifold negative pressure. The membrane is connected... | 09/09/1980 |
| 4208994 | Thermally responsive valve A thermally responsive valve composed of a first fluid passage whose inlet is connected to a carburetor advance port and whose outlet communicates with a chamber; a second fluid passage whose inlet communicates with the chamber and whose outlet is connect... | 06/24/1980 |
| 4206729 | Exhaust gas recirculation system An exhaust gas recirculation system for use in an internal combustion engine includes an intake manifold having a riser portion serving as a heating source for an intake mixture charge, an exhaust gas recirculation passage running from an exhaust manifold... | 06/10/1980 |
| 4142496 | Exhaust gas recirculation system Two thermally operated control valves which, in cooperation with each other, admit into the vacuum chamber of the diaphragm unit for the EGR control valve atmospheric air only during cold engine operation, both atmospheric air and engine suction vacuum du... | 03/06/1979 |
| 4122810 | Automotive exhaust gas recirculation valve An exhaust gas recirculation valve for installation in the recirculation flow path between the exhaust and intake manifolds of an internal combustion engine. A metering control in the form of an axially displaceable pintle is operative in the flow path of... | 10/31/1978 |
| 4066056 | Exhaust gas recirculator An exhaust gas recirculator wherein a double diaphragm type flow control valve is disposed in a recirculating passage which couples an exhaust system and an intake or suction system of an internal combustion engine. The flow control valve includes first a... | 01/03/1978 |
| 4058098 | Control system for use in exhaust gas recirculation system A control system for use in an exhaust gas recirculation system of an internal combustion engine, in which part of exhaust gases is recirculated from an exhaust system to an intake system in an attempt to reduce the amount of harmful components contained ... | 11/15/1977 |
| 4016853 | Control system and improved pneumatically operated temperature controlled valve construction therefor or the like An internal combustion engine control system having a source of vacuum and a vacuum operated control device. A vacuum operated temperature controlled valve construction is provided for interconnecting the source to the device when the construction senses ... | 04/12/1977 |
| 3996905 | Vacuum controls for internal combustion engines A vacuum control system sourced by engine manifold vacuum particularly for exhaust gas recirculation (EGR) systems and carburetor idle enrichment systems wherein a timer means delays system operation for a predetermined period following engine start-up.... | 12/14/1976 |
| 3990418 | Exhaust gas control valve An exhaust gas control valve adapted for controlling exhaust gas flow returning to the upstream side of a carburetor from an exhaust line of a vehicle engine. The control valve comprises a means for reducing or stopping the returning exhaust gas when ambi... | 11/09/1976 |
