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| Number | Title | Issue Date |
| 8132546 | Control strategy for multi-stroke engine system An engine system and a method of operation are described. The engine may be operating in two-stroke and four-stroke modes while still maintaining a target exhaust air-fuel ratio. ... | 03/13/2012 |
| 8122857 | Control architecture and optimal strategy for switching between 2-stroke and 4-stroke modes of HCCI operation Engine correction inputs to control oscillation in an engine output in a transition between 2-stroke and 4-stroke engine cycle modes of an HCCI engine are determined as follows: for each mode, valve timings which modify the engine output the most upon switching are ... | 02/28/2012 |
| 8118000 | Multi-stroke internal combustion engine An internal combustion engine system and method of its operation are described. As one example, the method includes: repeatedly opening a first intake valve of a combustion chamber of the engine once every four piston strokes; transitioning operation of the combusti... | 02/21/2012 |
| 7997237 | Multi-stroke internal combustion engine An example engine method utilizes a first intake valve actuated by a first camshaft once every four piston strokes and a second intake valve actuated by a second camshaft once every four piston strokes, but out of phase with the first intake valve actuation, to prov... | 08/16/2011 |
| 7946259 | Multi-stroke internal combustion engine An engine system and method of its operation are described. The method includes: operating the combustion chamber in a four stroke cycle by repeatedly opening a first exhaust valve of the combustion chamber once every four piston strokes while holding closed a secon... | 05/24/2011 |
| 7673590 | Method for exhaust heat generation by variable stroke combustion cycles and valves A method for operating an engine having at least a first and second cylinder, comprising operating the first cylinder with a spark timing more retarded than a spark timing of a second cylinder; and operating one of said first cylinder and second cylinders with a fir... | 03/09/2010 |
| 7574982 | Engine cycles An 8 Stroke and 4 Stroke cycle change engine where alternate ‘air only’ inductions are used under half load provided by alternate opening inlet valves operated by Electro-Magnetic, Electro-Hydraulic or other electrically controlled means and where the electronic... | 08/18/2009 |
| 7481185 | Multi-mode 2-stroke/4-stroke internal combustion engine In a multi-mode, 2-stroke/4-stroke internal combustion engine operation, by switching the engine stroke from 4-stroke operation to 2-stroke operation so that the combustion frequency is doubled, doubling of the engine power is achieved even at the same work output p... | 01/27/2009 |
| 7421981 | Modulated combined lubrication and control pressure system for two-stroke/four-stroke switching A switching mechanism capable of switching between a two-stroke operation and a four-stroke operation of an engine as desired, wherein the switching mechanism is switchable between engagement with a first cam lobe for four-stroke operation and a second cam lobe for ... | 09/09/2008 |
| 7377236 | System and method for exhaust heat generation using electrically actuated cylinder valves and variable stroke combustion cycles A method for operating an engine having at least a first and second cylinder, including operating the first cylinder with a spark timing more retarded than a spark timing of a second cylinder; and operating one of said first cylinder and second cylinders with a firs... | 05/27/2008 |
| 7347170 | Frequency modulated VCR-engine A control method for the modulation of the torque of piston combustion engine that has a compression chamber (6) of variable volume and operable inlet valves (3). The torque requested for a predetermined operative condition is obtained through a select... | 03/25/2008 |
| 7305938 | Stroke-variable engine A stroke-variable engine includes a pivot shaft which is rotatably supported in a crankcase so as to be rotatable about an eccentric axis parallel to a crankshaft and which is connected to a control rod so that a rotational power reduced at a reduction ratio of 1/2 ... | 12/11/2007 |
| 7280912 | Controller and control method for an engine control unit A method for controlling operation of an electronic control unit for use in an internal combustion engine, the electronic control unit being used to control different engine modes, the method including providing a function mode map having a plurality of data map poi... | 10/09/2007 |
| 7275514 | Method of HCCI and SI combustion control for a direct injection internal combustion engine The present invention relates to methods for robust controlled auto-ignition and spark ignited combustion controls in gasoline direct-injection engines, including transients, using either exhaust re-breathing or a combination of exhaust re-compression and re-breathi... | 10/02/2007 |
| 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 |
| 7243621 | Two-stroke engine A two-stroke engine (1, 31, 41, 51) includes a cylinder (2) having a combustion chamber (5). The combustion chamber (5) is delimited by a piston (7) which drives a crankshaft (25) rotatably journalled in a crankcase (3 | 07/17/2007 |
| 7243633 | HEV internal combustion engine pre-positioning A method for controlling an engine that operates with negative valve overlap between an intake valve and an exhaust valve during at least some conditions, the method comprising of providing an engine stop position with at least one cylinder near top dead center of p... | 07/17/2007 |
| 7231892 | Method for extending HCCI load range using a two-stroke cycle and variable valve actuation A method and system for extending the load range of Homogeneous Charge Compression Ignition (HCCI) in an internal combustion engine includes detecting a current state of the engine, detecting a load demand placed on the engine, determining if the load demand is beyo... | 06/19/2007 |
| 7182046 | Deformable combustion chamber-based internal combustion engine and generator A reciprocating internal combustion engine is based on Homogenous Charge Compression Ignition (HCCI) that occurs in a deformable, resonant combustion chamber and that is coupled mechanically to efficient, resonant, electro-mechanical transducers acting as motors and... | 02/27/2007 |
| 7181333 | Engine operation without cam sensor Disclosed herein are methods of cranking and/or operating an engine that eliminates the need for use of a cam sensor. The methods implemented with internal combustion engine comprising a plurality of cylinders whose firing sequence occurs over two revolutions of a c... | 02/20/2007 |
| 7168409 | Controller for direct injection internal combustion engine A direct injection engine is provided with valve timing controllers in an intake side and an exhaust side. While the engine is running in a homogeneous combustion mode, a computer determines whether a valve overlap period exists, in which both the intake valve and t... | 01/30/2007 |
| 7143725 | Dual six-stroke self-cooling internal combustion engine The present invention provides a dual six-stroke self-cooling internal combustion engine which utilizes a turbo and a cooling cylinder to compress cool air onto the engine head and reduce the engine temperature. The present invention greatly reduces the size and the... | 12/05/2006 |
| 7131933 | Vehicle control apparatus having means for changing inertia torque of engine during shifting action or during switching of operating state of lock-up clutch A control apparatus for an automotive vehicle having an automatic transmission and an engine capable of controlling a resistance to its rotary motion. The control apparatus is adapted to change an output torque of the engine temporarily during a shifting action of t... | 11/07/2006 |
| 7124717 | Method and device for operating an internal combustion engine A method and a device for operating an internal combustion engine having a plurality of cylinders are described, each cylinder having at least one intake valve and one exhaust valve having fully variable valve control, a fuel feed to at least one first cylinder of t... | 10/24/2006 |
| 7114485 | Over expanded two-stroke engines A method for combusting fuel in an engine involving decreasing a first volume of a homogeneous lean fuel/air charge to a second volume, in two stages, while increasing the pressure and temperature of that charge (a compression process having a chosen compression rat... | 10/03/2006 |
| 7093568 | Control of autoignition timing in a HCCI engine Method and system embody a valve timing strategy to control the autoignition timing of a four stroke internal combustion engine (10) operated in an HCCI mode at different engine operating conditions such as different engine speed and torque. A particular valv... | 08/22/2006 |
| 7082898 | Internal combustion engine of compression ignition type The present invention aims at expanding an operation range for allowing a compression ignition combustion operation. The present invention provides an internal combustion engine of a compression ignition type that is capable of operating with a compression ignition ... | 08/01/2006 |
| 7080613 | Method for auto-ignition combustion control A method is disclosed for controlling the air-fuel ratio in a four-stroke gasoline direct-injection controlled auto-ignition combustion. The engine is operated with two sequential pairs of expansion and contraction strokes during two revolutions of the engine crank,... | 07/25/2006 |
| 7066159 | System and method for multi-lift valve actuation A system and method for actuating one or more engine valves to produce an engine valve event is disclosed. The system may comprise: a housing; an accumulator disposed in the housing having a first open end and a second open end; a master piston slidably disposed in ... | 06/27/2006 |
| 7069140 | Engine operation without cam sensor Disclosed herein are methods of cranking and/or operating an engine that eliminates the need for use of a cam sensor. The methods implemented with internal combustion engine comprising a plurality of cylinders whose firing sequence occurs over two revolutions of a c... | 06/27/2006 |
| 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 |
| 7059281 | Four stroke engine auto-ignition combustion A method of operating a four-stroke gasoline direct-injection controlled auto-ignition combustion engine includes opening both the intake and exhaust valves during terminal portions of the expansion strokes and initial portions of the contraction strokes, injecting ... | 06/13/2006 |
| 7055493 | Method for fuel injection in a combustion engine, and combustion engine A method and a device for fuel injection in a supercharged four-stroke combustion engine of piston-and-cylinder type with compression ignition (1), whereby a controlled fuel quantity is supplied to the combustion chamber (2) for each work cycle, a firs... | 06/06/2006 |
| 7047910 | Method of torque modulation A control method for modulating the torque in an internal combustion engine with mechanical power transmission and with pneumatically, hydraulically or electromagnetically controllable valves that are open and closed based on signals from a control system, by which ... | 05/23/2006 |
| 7036465 | Two-stroke and four-stroke switching mechanism A switching mechanism capable of switching between a two-stroke and a four-stroke operation of an engine as desired, wherein the switching mechanism is switchable between engagement with a first cam lobe for four-stroke operation and a second cam lobe for two-stroke... | 05/02/2006 |
| 7032545 | Multi-stroke cylinder operation in an internal combustion engine A method to control valves that may be deactivated during multi-stroke cylinder operation. Valves are controlled to improve drivability and reduce valve degradation. ... | 04/25/2006 |
| 7031821 | Electromagnetic valve control in an internal combustion engine with an asymmetric exhaust system design A system and method to control engine valves of an internal combustion engine is shown. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions of an internal combustion engine. Further, the method can adjust valve operation to account fo... | 04/18/2006 |
| 6971338 | Variable cycle engine and operation mode switching method An engine is operated in accordance with a plurality of operation modes obtained by combining one of a 4-cycle mode and a 2-cycle mode with one of a combustion ignition control where an ignition is performed with an ignition unit and a self ignition priority control... | 12/06/2005 |
| 6966309 | In-cylinder reburn method for emissions reduction A method applicable to lean-burn combustion engines uses excess air from previous engine cycles in a reburning process to provide exhaust gases characteristic of stoichiometric combustion. Stoichiometric combustion products are particularly useful for use by convent... | 11/22/2005 |
