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| Number | Title | Issue Date |
| 7536983 | Internal combustion engine and method for operating an internal combustion engine An internal combustion engine has a cylinder with a combustion chamber delimited by a reciprocating piston that drives a crankshaft rotatably supported in a crankcase. The internal combustion engine has an intake passage, an exhaust connected to the combustion chamb... | 05/26/2009 |
| 7441518 | Internal combustion engine and method of operating same An internal combustion engine having an intake channel that opens into a crankcase. A first fuel channel opens into the intake channel to supply fuel thereto as a function of underpressure in the intake channel. An auxiliary channel opens into a transfer channel tha... | 10/28/2008 |
| 7361629 | Additives for lubricants and fuels A multi-functional composition for use as an additive for fuels and lubricants. The composition includes an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture containing an aliphatic polyamine and an aromatic polyamine. The molar r... | 04/22/2008 |
| 7341040 | Supercharged two-cycle engines employing novel single element reciprocating shuttle inlet valve mechanisms and with a variable compression ratio This invention relates to novel reciprocating shuttle inlet valves, effective with every type of two-cycle engine, from small high-speed single cylinder model engines, to large low-speed multiple cylinder engines, employing spark or compression ignition. Also permit... | 03/11/2008 |
| 7331315 | Two-stroke engine with fuel injection A two-stroke internal combustion engine is provided with a fuel injector. The two-stroke internal combustion engine may have at least one transfer passage, an air channel, and a fuel injector. The transfer passage is between a crankcase and a combustion chamber of t... | 02/19/2008 |
| 7331314 | Two-stroke engine A two-stroke engine has a cylinder with a combustion chamber that is delimited by a reciprocating piston that drives with a connecting rod a crankshaft rotatably supported in a crankcase. In predetermined positions of the piston, the crankcase is connected by at lea... | 02/19/2008 |
| 7287495 | Two-cycle engine In a two cycle engine, the bypass as well as the need for mixing fuel and oil are eliminated through the use of a separate compressor. A unique set of inlet and exhaust valves form an integral part of the system. These valve are used to optimize the performance of t... | 10/30/2007 |
| 7267326 | Automatic priming system An automatic priming system for internal combustion engines, which is operable to prime the carburetor of the engine at engine cranking speeds, and is automatically disabled after the engine starts. The automatic priming system is driven by pressure fluctuations wit... | 09/11/2007 |
| 7258107 | Temperature-controlled fuel injection system for two-stroke engines The present invention provides a system and method for controlling a two-stroke engine in correspondence with exhaust gas temperature. An engine control unit (ECU) receives an output from a temperature sensor mounted in the exhaust pipe. The engine control unit cont... | 08/21/2007 |
| 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 |
| 7225769 | Two-stroke cycle engine This invention concerns a two-stroke cycle engine, more specially it concerns a two-stroke cycle engine using a preceding air-layer for scavenging. It has a scavenger passage connected to a branching scavenger passage opened to said scavenging port. The engine has a... | 06/05/2007 |
| 7185632 | Internal combustion engine and method of operating the same An internal combustion engine (20) has a cylinder (1) wherein a piston (2) is mounted. The piston (2) drives a crankshaft (10) which is rotatably journalled in a crankcase (11). The piston (2) delimits a combustion ch... | 03/06/2007 |
| 7168401 | Multi-location fuel injection system A two-stroke engine having both a direct injector and an indirect injector. The direct injector injects fuel into the cylinder without passing through the crank case. The indirect injector is in fluid communication with the crank case. It provides fuel delivery thro... | 01/30/2007 |
| 7089892 | Fuel injection system and method for two-cycle engines A straddle seat type vehicle with a two-cycle internal combustion engine with a crankcase fuel injector. The crankcase fuel injector is mounted through a wall of the crankcase and injects fuel in a jet directed at incoming air entering into the crankcase. The engine... | 08/15/2006 |
| 7021292 | Pressure sensor device of internal combustion engine A pressure sensor device of an internal combustion engine includes: a pressure sensor detecting a pressure in an intake pipe of an internal combustion engine, a pressure sensor failure determination device determining a failure of the pressure sensor, an idle determ... | 04/04/2006 |
| 7017537 | Two-stroke engine and method for operating the same A two-stroke engine (1) is especially for a handheld work apparatus such as a motor-driven chain saw, a cutoff machine or the like and has a cylinder (2) wherein a combustion chamber (3) is formed. The combustion chamber (3) is delimited ... | 03/28/2006 |
| 6976458 | Two-stroke engine A two-stroke engine (1) has a combustion chamber (3) configured in a cylinder (2). The combustion chamber (3) is delimited by a reciprocating piston (5) and drives a crankshaft (7) which is rotatably journalled in a crankcas... | 12/20/2005 |
| 6976457 | Two-stroke engine having a membrane valve integrated into the transfer channel A mixture lubricated two-stroke engine includes a cylinder (4) having a cylinder head (3) and a cylinder bore (5) open to the crankcase (6). A piston (7) is displaceably arranged in the cylinder bore (5). The piston (7 | 12/20/2005 |
| 6932032 | Two-stroke engine A two-stroke engine (1) has a combustion chamber (3) disposed in a cylinder (2). The combustion chamber (3) is delimited by a reciprocating piston (5). The piston (5) drives a crankshaft (7) via a connecting rod (6... | 08/23/2005 |
| 6782851 | Two-stroke engine in a portable, manually-guided implement A two-stroke engine is provided for a manually-guided implement. Formed in a cylinder is a combustion chamber that is delimited by a reciprocating piston that drives a crankshaft via a connecting rod. An outlet is provided for withdrawing exhaust gases out of the co... | 08/31/2004 |
| 6691649 | Fuel injection system for a two-stroke engine An internal combustion, two stroke engine is disclosed. The engine includes a crankcase with a cylinder adapted to house a piston. At least one transfer duct communicates the crankcase to the cylinder. At least one fuel injector is disposed through a wall... | 02/17/2004 |
| 6557504 | Two-stroke internal combustion engine A two-stroke internal combustion engine comprising a cylinder (10; 50) with a movable piston (11; 52) in it, which cylinder at its one end has a combustion chamber (16; 51) and at its other end is connected to a crankcase (15; 53). The crankcase and the c... | 05/06/2003 |
| 6460494 | Compressed air assisted fuel injection system with reflection wave and variable restriction injection port An internal combustion engine having a combustion chamber and a fuel delivery system for delivering fuel into the combustion chamber. The fuel delivery system includes a fuel entry proximate the combustion chamber, a combustion compression wave reflection... | 10/08/2002 |
| 6450135 | Two-stroke internal combustion engine A two-stroke internal combustion engine has an air passageway for introducing air into a scavenging passageway communicating a combustion/actuating chamber disposed above a piston with a crankcase and an air-fuel supply passageway for introducing an air-f... | 09/17/2002 |
| 6427646 | Small engine fuel injection system A fuel injection system for a two-stroke small engine has a charge forming device with an injector mixing passage which forms a rich fuel and air mixture supplied to a tuned injector tube connected adjacent one end through a port to the engine cylinder an... | 08/06/2002 |
| 6427647 | Internal combustion engines A two stroke combustion engine, equipped with fuel injection apparatus and ignition timing controlled by throttle position, has a charge forming device which delivers a rich fuel mixture from an integral float-type fuel chamber. The fuel injection apparat... | 08/06/2002 |
| 6418891 | Internal combustion engine A two-stroke internal combustion engine having an air control arrangement which controls scavenging air flow during rapid engine acceleration to optimize the acceleration and maximum power output of the engine while maintaining low exhaust emissions from ... | 07/16/2002 |
| 6295957 | Compressed air assisted fuel injection system An internal combustion engine having a compressed air assisted fuel injection system connected between a source of compressed air and a cylinder of the engine. The compressed air assisted fuel injection system has an accumulator conduit with an injection ... | 10/02/2001 |
| 6293235 | Compressed air assisted fuel injection system with variable effective reflection length An internal combustion engine having a combustion chamber and a fuel delivery system for delivering fuel into the combustion chamber. The fuel delivery system includes a fuel entry proximate the combustion chamber and a combustion compression wave reflect... | 09/25/2001 |
| 6273037 | Compressed air assisted fuel injection system An internal combustion engine having a compressed air assisted fuel injection system. The injection system has a compressed air accumulator with a first aperture into the cylinder of the engine and a second aperture into the crankcase of the engine. The t... | 08/14/2001 |
| 6135071 | Two-stroke internal combustion engine A two-stroke internal combustion engine having a crankcase provided with a crank chamber, a suction port which opens to the crank chamber, a scavenging passage opening into the crank chamber, and a crankshaft is provided with a flow control surface formed... | 10/24/2000 |
| 6079379 | Pneumatically controlled compressed air assisted fuel injection system A two-stroke internal combustion engine having a compressed air assisted fuel injection system. The injection system has an accumulator that uses scavenged air from the crankcase as the compressed air source. The injection system has a valve connected to ... | 06/27/2000 |
| 5947066 | Two-cycle internal combustion engine A two-cycle internal combustion engine comprising a combustion chamber, an exhaust port and a scavenging port each opening into the combustion chamber. The opening area of each of the exhaust port and the scavenging port is made as small as possible in re... | 09/07/1999 |
| 5901673 | Two-cycle internal combustion engine A two-cycle internal combustion engine of the fuel injection type, which comprises a cylinder block provided with a combustion chamber and a scavenging passage; a scavenging passage cover constituting a portion of a wall of the scavenging passage; and a f... | 05/11/1999 |
| 5857449 | Two-cycle internal combustion engine A two-cycle internal combustion engine provided with at least one fuel injection nozzle, wherein the fuel injection nozzle is provided with a heating element for heating the fuel so as to cause the fuel to undergo a phase change before the fuel is injecte... | 01/12/1999 |
| 5809949 | Two-stroke engine with improved injection device and associated injection process The present invention relates to a two-stroke engine comprising at least: a cylinder (111) in which a piston (112) moves and one end of which communicates with a pump crankcase (115) crossed through by the crankshaft (114) of the engine, a capacity under press... | 09/22/1998 |
| 5778838 | Fuel supply device for crankcase chamber supercharged engine A four-cycle internal combustion engine wherein the piston connecting rod crankshaft and crankcase chamber are formed so that the crankcase chamber acts as compressor. An induction system supplies atmospheric air to the crankcase chamber and a pressure co... | 07/14/1998 |
| 5740767 | Scavenge control for engine A number of embodiments of two-cycle engines employing Schnurle-type scavenging. In addition and in some embodiments, a ramble port is also incorporated so as to introduce a tumble charge into the combustion chamber and reduce the likelihood of fresh char... | 04/21/1998 |
| 5690063 | Engine control system A fuel injection and ignition control system for a two-cycle crankcase compression engine wherein both fuel injection and ignition timing are controlled by sensed engine running characteristics at a predetermined crankshaft position. The timing of the ign... | 11/25/1997 |
| 5645018 | Two cycle internal combustion engine A two-cycle internal combustion engine is provided which is capable of preventing the blow-by phenomenon, thereby improving both fuel economy and exhaust purifying performance, and superior in the response of fuel injection volume. In a two-cycle internal... | 07/08/1997 |
