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| Number | Title | Issue Date |
| 7891326 | Engine exhaust system The engine exhaust system may allow scavenging of two-stroke engines using a retro-tube attached to an exhaust port of a two-stroke engine. Intake air may be obtained directly from environmental air at atmospheric pressure allowed by engine cycle operation and an ap... | 02/22/2011 |
| 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 |
| 7275516 | System and method for boosted direct injection engine A method for operating and engine having a cylinder with at least an intake and exhaust valve, comprising of performing a combustion cycle in the cylinder in which exhaust valve closing occurs after intake valve opening thereby creating valve overlap, boosting intak... | 10/02/2007 |
| 7090048 | Method and apparatus for exhaust sound attenuation on engines with cylinder deactivation A system for attenuating exhaust noise from an engine with a first group of active cylinders and a second group of deactivatable cylinders includes a first exhaust manifold connected to the first group of active cylinders and a second exhaust manifold connected to t... | 08/15/2006 |
| 6415747 | Two stroke, multiple cylinder engine for small vehicle An improved two stroke, multiple cylinder engine having combustion chambers and a single exhaust conduit for discharging exhaust gasses from the combustion chambers. In accordance with one feature of the invention, the combustion chambers are unified to t... | 07/09/2002 |
| 5819693 | Method for improving the operation of an air-scavenged supercharged heat engine, and heat engine therefor A method wherein a number of cylinders (2, 3; 1, 4) are grouped on a same exhaust gas manifold (8, 10) such that the pressure in the exhaust pipe (1e . . . 4e) undergoes time-dependent fluctuations of substantial amplitudes, and the exhaust valve (6) of a... | 10/13/1998 |
| 5156118 | Process and device for self super-charging a two stroke engine Process and device for supplying air to the cylinder of a two-stroke internal combustion engine, with at least one set of two cylinders arranged at 180 degrees, supercharged by a post-filling effect. Said device is characterized in that it comprises a vol... | 10/20/1992 |
| 5154141 | Dual cycle engine process The invention relates to new and useful improvements in the exhaust and induction processes of the piston driven internal combustion engine. In the invention a gas ejector is used in conjunction with a poppet valve to control the induction of air and the ... | 10/13/1992 |
| 5144917 | Free-piston engine This gas pressure generating engine has a totally unconnected piston running between a combustion chamber and a rebounding volume. The piston uncovers the outlet port after moving a short distance from the combustion chamber and utilizes the rest of the p... | 09/08/1992 |
| 5051909 | Method and means for determining exhaust backpressure in a crankcase scavenged two-stoke engine A method and means are described for determining the average backpressure at a cylinder exhaust port in a crankcase scavenged two-cycle engine. The exhaust backpressure is determined by averaging the pressure of air within a crankcase chamber associated w... | 09/24/1991 |
| 4940435 | Marine propulsion device A marine propulsion device comprising a propulsion unit including an internal combustion engine, the engine comprising a cylinder, a water jacket, a water jacket inlet port communicating with the water jacket, and a lower face having therein an exhaust ou... | 07/10/1990 |
| 4920928 | Momentum engine A free-piston engine in which combustion gas is conducted around a piston for a short time during the expansion stroke. The resulting lowered pressure enables intaking in the final part of this stroke. Pressure from the gas conducted around the piston ser... | 05/01/1990 |
| 4905646 | Two-stroke internal combustion engine with cylinder head valves A two-stroke internal combustion engine comprising a cylinder head 14 having intake valves 20 and exhaust valves 22 arranged therein. A supercharger 42 is arranged in an intake pipe 44 and a tank 46 is mounted downstream of the supercharger 42. A valve 48... | 03/06/1990 |
| 4827880 | Pulsation controller in the intake/exhaust systems of internal combustion engines The invention relates to a pulsation controller in the intake/exhaust systems of internal combustion engines inclusive of two-cycle gasoline engines, four-cycle engines and rotary piston engines, and includes a device for detecting by means of a sensor pu... | 05/09/1989 |
| 4768343 | Two-cycle turbocharged internal combustion engine A two-cycle internal combustion engine operated with a fuel mixture having exhaust gas turbo charging. To inhibit carbon fouling of the exhaust gas turbine, a turbine wheel housing is arranged inside the exhaust manifold. To balance the resultant heating ... | 09/06/1988 |
| 4389982 | Internal combustion engine fuel supply system A fuel supply system for an internal combustion engine having inlet porting and a fuel supply passage with valve means therein, the cross-sectional area lying within the outside passage walls being greater in the region of the valve means than in a region... | 06/28/1983 |
| 4363296 | Combustion chamber pressure tap A source of gas pressure from an internal combustion engine is made available by tapping off the exhaust products within the combustion chamber, preferably just prior to exhausting the gas out of the engine. A pressure tap fitting communicates with the co... | 12/14/1982 |
| 4356798 | Intake system for use in internal combustion engine An internal system for use in an internal combustion engine which includes a carburetor, a throttle valve and a check valve. A supplemental chamber is connected to an intake passage adapted to introduce therethrough air-fuel mixture from the throttle valv... | 11/02/1982 |
| 4337054 | Outboard motor including folded tuned exhaust gas passage The invention includes an outboard motor comprising a power head having an exhaust gas port, a drive shaft housing extending downwardly from the power head and including an exhaust gas discharge outlet adjacent its lower end, and a continuous folded passa... | 06/29/1982 |
| 4131090 | Two-stroke, multicylinder, spark ignition, pumpless injection internal combustion engine This invention relates to a two-stroke, spark ignition, internal combustion engine, with two, three, four or six cylinders. Fuel injection is provided by means of combustion gases and no fuel pump is employed. The working spaces of the engine cylinders ar... | 12/26/1978 |
| 4116172 | Naturally aspirated eight cylinder internal combustion engine A naturally aspirated eight cylinder internal combustion V-engine in which the cylinders of each bank of cylinders are divided into groups of two cylinders each, and in which the inlet ports of each group pertaining to one and the same cylinder bank are b... | 09/26/1978 |
| 4091775 | Two-stroke internal combustion engine The intake ports of the combustion chambers of two alternately-operating cylinders of a two-stroke internal combustion engine are connected by a conduit which sets up temporary communication between the two cylinders. In operation, while the piston of one... | 05/30/1978 |
| 4020801 | Two-stroke, multicylinder, spark ignition, pumpless injection internal combustion engine This invention relates to a two-stroke, spark ignition, internal combustion engine, with two, three, four or six cylinders. Fuel injection is provided by means of combustion gases and no fuel pump is employed. The working spaces of the engine cylinders ar... | 05/03/1977 |
