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| Number | Title | Issue Date |
| 7055469 | Combustion engine variable compression ratio apparatus and method An apparatus and method for varying a compression ratio of an engine having a block and a head mounted thereto. The apparatus and method includes a cylinder having a block portion and a head portion, a piston linearly movable in the block portion of the cylinder, a ... | 06/06/2006 |
| 6941907 | Homogneous or premixed charge auto-ignition engine A homogeneous or pre-mixed charge auto-ignition engine comprising two interconnected chambers (20, 30) one of which is the combustion chamber (20) and the other (30) containing the power transmitting member (31). Between the two chambers ... | 09/13/2005 |
| 6427643 | Internal combustion engine with variable compression ratio A lean burn auto-ignition internal combustion engine which has a combustion volume which includes two parts one entering into the other, the volume of the second part being variable by control means (34) which takes into account the various operating para... | 08/06/2002 |
| 6397796 | Oiling systems and methods for changing lengths of variable compression ratio connecting rods An engine 20 has an oiling system including a pump (46) that delivers oil under nominal engine lubrication pressure to lubricate moving surfaces of the engine mechanism (42). The system also has first and second control passages (30, 32) to effect engine ... | 06/04/2002 |
| 6035814 | Compound combustion expansion internal combustion engine An internal combustion engine in one embodiment includes a number of cylinders each having a crank piston connected to an engine crankshaft and disposed within a combustion chamber. Each cylinder includes a valve seat projecting inward from cylinder wall ... | 03/14/2000 |
| 5476072 | Fuel tolerant combustion engine with reduced knock sensitivity A supplemental cylinder head assembly for operation of an engine in a homogeneous charge compression ignition combustion mode. The supplemental cylinder head assembly provides a movable accumulator piston position above the main combustion chamber. The ac... | 12/19/1995 |
| 5003936 | Cylinder of an internal combustion engine having variable volume Conventional cylinders of internal combustion engines comprise a cylinder chamber of constant size so that there is an unchangeable compression chamber between the top dead center position of the piston and the cylinder head. To be able to vary the size o... | 04/02/1991 |
| 4993386 | Operation control system for internal combustion engine An operation control system for an engine using alcohol fuel or mixed fuel of alcohol and hydrocarbon, or for an engine supplying cooling liquid such as alcohol, water or the like as fuel. Vapor concentration in exhaust gas and an air excess ratio of air-... | 02/19/1991 |
| 4827882 | Internal regenerative combustion engines with thermal integrated optimized system An optimized unitary energetic system for an internal combustion engine comprising a gas distribution system for intake and exhaust associated with an optimized variable geometry combustion chamber with a regenerative cylinder wall lining to contain therm... | 05/09/1989 |
| 4516537 | Variable compression system for internal combustion engines A variable compression system for internal combustion engines whose compression ratio is varied by hydraulic regulation of back and forth movement of a sub-piston slidably mounted within a sub-cylinder communicated with a combustion chamber, comprising a ... | 05/14/1985 |
| 4515113 | Swash plate engine The swash plate engine is provided with an Aspin type rotary valve system with a variable compression capability. The engine may be of four-piston type or six-piston type. The size of the combustion chambers can be changed from time to time to vary the co... | 05/07/1985 |
| 4510894 | Cam operated engine A cam operated internal combustion engine of piston type positive displacement variety, having novel piston-to-cam connecting means. The pistons are cam operated to optimize the aspiration, combustion and expansion process. Executed in axial and radial ca... | 04/16/1985 |
| 4286552 | Variable compression ratio internal combustion engine The clearance volume of a combustion chamber of an internal combustion engine at the same crankangle is varied by changing the location of a small piston reciprocally disposed in a small cylinder formed in a cylinder head, which small cylinder communicate... | 09/01/1981 |
| 4246873 | Pressure addible engine An engine capable of storing high pressure gases and discharging them to increase the pressure of compressed fuel-mixture. A gas storage chamber is provided adjacent to the combustion chamber. The chamber opens to release high pressure gases just prior to... | 01/27/1981 |
| 4241703 | Devices for promoting compression ratio of fuel mixture in engines A device to fit existing engines for the purpose of increasing compressed fuel-mixture pressure and promoting a compression ratio of the fuel-mixture in an engine to enable the fuel-mixture to burn more perfectly and the engine to works more efficiently. ... | 12/30/1980 |
| 4187808 | Engine having a variable compression ratio The engine comprises, for each of its cylinders, an auxiliary piston provided with a piston rod. The piston is movable in a cavity which is formed in the cylinder head and opens into the combustion chamber. The cavity defines with the auxiliary piston an ... | 02/12/1980 |
| 4182288 | Mixture-compressing, spark-ignited internal combustion engine having a combined throttle and compression control A mixture-compressing, spark-ignited internal combustion engine has a combined throttle and compression control. The engine has at least one main piston sliding in a main cylinder and driving a crankshaft, and an auxiliary piston sliding in an auxiliary c... | 01/08/1980 |
| 4148284 | Variable compression ratio engine A two-part variable compression ratio cylinder is provided having inner and outer sleeves wherein relative movement between the sleeves varies the volume of the combustion chamber and hence varies the compression ratio of the engine. Hydraulic means respo... | 04/10/1979 |
| 4144851 | Variable compression ratio engine A two-part variable compression ratio cylinder is provided having inner and outer sleeves wherein relative movement between the sleeves varies the volume of the combustion chamber and hence varies the compression ratio of the engine. Hydraulic means respo... | 03/20/1979 |
| 4016841 | Variable compression ratio piston A two part variable compression ratio (VCR) piston assembly having an outer member movable relative to an inner member to vary the compression ratio of an internal combustion engine and a hydraulic system utilizing oil from the lubrication system of the e... | 04/12/1977 |
| 3970056 | Variable compression ratio control system for internal combustion engines The internal combustion engine comprises one or more cylinders in which a main piston provides the means to drive a drive shaft, there is a cylinder head over the cylinders. Auxiliary pistons slide in each auxiliary cylinder in the cylinder head and each ... | 07/20/1976 |
| 3964452 | High compression internal combustion engine using a lean charge A spring-loaded piston is slidably arranged in an auxiliary chamber opening into the combustion chamber of an internal combustion engine. The spring-loading of the piston is preset so that the piston retracts at a certain high pressure attained during the... | 06/22/1976 |
