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| Number | Title | Issue Date |
| 7328685 | Slip joint exhaust manifolds A multi-piece exhaust manifold includes a ring seal between separate portions. The separate portions have generally cylindrical sealing surfaces formed thereon to mate with the ring seal. The ring seal may include a metal sheath filled with graphite or other sealing... | 02/12/2008 |
| 7313918 | Alternative (reciprocating) engine with recirculation of exhaust gases intended for the propulsion of automobiles and method turbocharging these motors A reciprocating engine includes a turbocharging unit that: supplies the intake manifold with air via a coolant; is supplied with gas by the exhaust manifold; and has the turbine supply pressure substantially equal to the compressor discharge pressure. At constant ai... | 01/01/2008 |
| 7290524 | Control apparatus and method for four-stroke premixed compression ignition internal combustion engine A control apparatus for a four-stroke premixed compression ignition internal combustion engine opens an exhaust valve to discharge burned gas from a combustion chamber at a first exhaust-valve opening timing, and reopens the exhaust valve at a second exhaust-valve o... | 11/06/2007 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7255066 | Valve selection for an engine operating in a multi-stroke cylinder mode A method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve drivability and emissions. ... | 08/14/2007 |
| 7246673 | Hybrid powertrain with engine valve deactivation A vehicle powertrain includes an engine and an electric motor in parallel hybrid combination. The engine includes a plurality of cylinders and a plurality of selectively deactivatable cylinder intake and exhaust valves so that every cylinder in the engine is charact... | 07/24/2007 |
| 7165529 | Method to control electromechanical valves in a DISI engine A system and method are disclosed for operating an internal combustion engine in which the intake valves are electromechanical valves and the engine has direct fuel injection. By opening the intake valves during the intake stroke when the piston is moving at its max... | 01/23/2007 |
| 7079935 | Valve control for an engine with electromechanically actuated valves A system and method to control engine valve timing of an internal combustion engine. Electromechanical valves are controlled to improve engine fuel economy. Further, the method can adjust valve operation to provide air-fuel charge motion and increase combustion stab... | 07/18/2006 |
| 7063062 | Valve selection for an engine operating in a multi-stroke cylinder mode A method to control valve patterns in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve drivability and emissions. ... | 06/20/2006 |
| 7063068 | Variable valve timing controller for an engine A variable valve timing controller includes an intake-valve and an exhaust-valve. When the engine is started, the intake-valve and the exhaust-valve are operated in a first mode in which the exhaust-valve is closed before top dead center and then the intake-valve is... | 06/20/2006 |
| 7055496 | Strategy for engine fueling during return to positive power flow after engine brake de-activation An internal combustion engine that propels a vehicle has a fuel injection system for injecting fuel into engine cylinders at desired injection control pressure. A control system controls activation and de-activation of a hydraulic actuator for an engine brake. A pro... | 06/06/2006 |
| 7028650 | Electromechanical valve operating conditions by control method A system and method to control engine valve timing of an internal combustion engine. Electromechanical valves are controlled in a manner to increase fuel economy. Further, the method can adjust valve operation to regulate valve temperature. ... | 04/18/2006 |
| 6994060 | Control apparatus and method for variable valve A control apparatus controls an electromagnetically driven valve, which includes at least one of an electromagnetically driven exhaust valve for opening or closing an exhaust valve and an electromagnetically driven intake valve for opening or closing an intake valve... | 02/07/2006 |
| 6883319 | Method for controlling the charging pressure at a turbocharged combustion engine, and a corresponding combustion engine A multicylinder internal combustion engine with an exhaust-driven turbocompressor and with a divided exhaust gas flow has at least two exhaust valves (2,3) and one intake valve per cylinder. A first exhaust valve (2) is connected to a first exhaust man... | 04/26/2005 |
| 6807937 | Multi-cylinder diesel engine with variably actuated valves In a Diesel engine with variably actuated valves, the cam controlling each inlet valve is shaped to provoke the opening of the respective inlet valve during the engine's normal exhaust phase and thus realize exhaust gas recirculation within the engine, due to the fa... | 10/26/2004 |
| 6739308 | Fuel igniter and head for use in diesel engines and related systems and methods The present invention provides a piston for a diesel engine that reduces emissions generated during the combustion of fuel in a combustion chamber and a head that allows more air to flow into and out of the combustion chamber. The piston includes an igniter that ign... | 05/25/2004 |
| 6708680 | Process intended for self-ignition control in a four-stroke engine Self-ignition control in a four-stroke internal-combustion engine, comprising several intake means and several exhaust means per cylinder. In order to reduce nitrogen oxide emissions during part-load operation, the exhaust means of each cylinder open (1 and | 03/23/2004 |
| 6701887 | Method for influencing the mixture formation and charging movement in a cylinder of a piston internal combustion engine with externally applied ignition A method of influencing the mixture formation and charge movement in the cylinders of a piston internal combustion engine, having at least one gas intake valve and at least one gas outlet valve per cylinder. Each of the valves is provided with a fully var... | 03/09/2004 |
| 6637385 | Internal combustion engine with exhaust gas control device In the present apparatus, a bypass exhaust pipe which communicates between the cylinder bore and the exhaust passage is disposed in the region of bottom dead center of the piston in an engine that comprises a piston that performs a reciprocating motion be... | 10/28/2003 |
| 6615795 | Internal combustion engine The present invention seeks to provide further methods to generate swirl and reduce cross flow in spark ignition internal combustion engines having two inlet and two exhaust valves per cylinder head, without the use of additional moving parts. According t... | 09/09/2003 |
| 6595183 | Internal combustion engine A multicylinder internal combustion engine with an exhaust-driven turbocompressor and with a divided exhaust flow has at least two exhaust valves and one intake valve per cylinder. A first exhaust valve is connected to a first exhaust manifold which leads... | 07/22/2003 |
| 6588396 | Spark ignition direct injection engine with oval fuel spray into oblong piston bowl The present invention provides a fuel injector mounted on a side of a combustion chamber and delivers an ovalized fuel spray toward an oblong piston bowl of the chamber. The ovality of the spray is selected in relation to the oblong piston bowl and the mo... | 07/08/2003 |
| 6568358 | Multicylinder internal combustion engine with gas flow lift valves actuated by electro-magnetic actuators The invention relates to a multi-cylinder internal combustion engine with gas flow lift valves actuated by electromagnetic actuators and controlling the intake and the exhaust of the cylinder combustion chambers. The cross-sectional area of the actuators ... | 05/27/2003 |
| 6564773 | Multi-valve engine A multi-valve engine comprises a plurality of intake and exhaust valves on a cylinder. Depending on use, one of the valves is made of higher heat-resistant material, and another is made of lower heat-resistant material, thereby decreasing cost and improvi... | 05/20/2003 |
| 6457444 | Poly valve system for internal combustion engines having non-parallel valve arrangement A poly valve system for an internal combustion engine having at least one cylinder having a bore and a cylinder center line, a piston capable of reciprocal travel within the bore, a cylinder head adjacent the bore having a hemispherical cylinder roof, int... | 10/01/2002 |
| 6394053 | Valve train for high speed direct injection diesel engine A valve train for a small size diesel engine includes a pair of camshafts rotatively supported by and passing over a top of a cylinder head, one pair of intake and exhaust cams on each camshaft for each cylinder, two intake ports and two exhaust ports for... | 05/28/2002 |
| 6293236 | Breathing system for internal combustion engines, using dual duty (alternatively exhaust-intake) valves and a forced air supply Breathing system for four-stroke, fuel injected internal combustion engines, wherein each poppet valve of each cylinder accomplishes a dual-duty to serve both as an exhaust valve (in the final process of a given cycle) and subsequently as an inlet valve (... | 09/25/2001 |
| 6234124 | Internal combustion engine with valve rest mechanisms An internal combustion engine with valve rest mechanisms. Exhaust secondary air is introduced at an exhaust port in a stable manner regardless of the resting, opening and closing operations of exhaust valves. Certain exhaust valves in the internal combust... | 05/22/2001 |
| 6213090 | Engine cylinder head A cylinder head for a four-valve per cylinder internal combustion engine comprises a bowl-shaped combustion chamber recess on a lower surface which cooperates with a piston in a cylinder to form a combustion chamber. The combustion chamber recess has firs... | 04/10/2001 |
| 6173685 | Air-fuel module adapted for an internal combustion engine A valve module that can be assembled to an internal combustion engine chamber. The valve module may have a first intake valve, a second intake valve, a third intake valve, a first exhaust valve and a second exhaust valve. The valves may be driven to an op... | 01/16/2001 |
| 6155228 | Multicylinder four-stroke internal combustion engine The invention relates to a multicylinder four-stroke internal combustion engine having a cylinder head (1) with an intake and an outlet port arrangement for two admission valves (15, 16, 17, 18) and two exhaust valves (26, 27) per cylinder. The admission ... | 12/05/2000 |
| 6148778 | Air-fuel module adapted for an internal combustion engine A valve module that can be assembled to an internal combustion engine chamber. The valve module may have a first intake valve, a second intake valve, a third intake valve, a first exhaust valve and a second exhaust valve. The valves may be driven to an op... | 11/21/2000 |
| 5870993 | Method and apparatus for operating a spark-ignited reciprocating-piston internal combustion engine To reduce fuel consumption and exhaust emissions in an internal combustion engine a comparatively large quantity of exhaust gas is recirculated and a specific swirling flow is imposed on the exhaust gas as it is introduced into the combustion chamber. For... | 02/16/1999 |
| 5826560 | Engine combustion chamber and method of operation Several embodiments of multi-valve internal combustion engines, wherein low-speed hydrocarbon emissions are reduced by restricting the opening of at least one of the exhaust valves under this running condition. In addition, and in accordance with at least... | 10/27/1998 |
| 5743225 | Valve system for engine A valve system for an engine comprises a plurality of intake or exhaust valves, adapted to be driven by cams of which the profiles are different from each other to make maximum valve lifts of the valves different from each other, and compression springs b... | 04/28/1998 |
| 5699765 | Cylinder head for a uniflow-scavenged two-stroke internal-combustion engine A cylinder head for a uniflow-scavenged two-stroke internal-combustion engine, particularly in motor vehicles, is provided with outlet valves which can be controlled by a camshaft. Outlet ducts connected with the outlet valves extend out of the cylinder h... | 12/23/1997 |
| 5669341 | Valve operating system for internal combustion engine In a valve operating system designed to open and close intake valves of an internal combustion engine by an electromagnetic force, a first electromagnetic driving device for electromagnetically driving a first intake valve capable of opening and closing a... | 09/23/1997 |
| 5448973 | Method of reducing the pressure and energy consumption of hydraulic actuators when activating engine exhaust valves A method of operating at least two exhaust valves in an engine cylinder using a four-way hydraulic actuator to open a first exhaust valve and after a time delay using a three-way hydraulic actuator to open a second exhaust valve to minimize the overall en... | 09/12/1995 |
| 5372108 | Engine charge control system and method An engine charge control system operates by initially reducing power from full load by retarding exhaust valve closing timing to increase exhaust gas charge dilution up to the limit for efficient operation. Further load reductions are made by reducing cha... | 12/13/1994 |
| 5347964 | Valve train for internal combustion engines A valve mechanism for an internal combustion engine with a four-valve, double-overhead camshaft (DOHC) valve train in which the axes of valves for each cylinder diverge outwardly from and are non-parallel with respect to the axis of the cylinder, the valv... | 09/20/1994 |
