| Patents for F02D 15 - Varying compression ratio (2,571) |
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| 01/25/1995 | EP0635624A1 Compression release for an internal combustion engine |
| 01/05/1995 | WO1995000752A1 Internal combustion engine |
| 01/04/1995 | EP0632194A1 Cylinder liner support arrangement |
| 01/04/1995 | EP0632191A1 Internal combustion engine |
| 01/03/1995 | US5377642 Compression release for an internal combustion engine |
| 12/15/1994 | DE4420195A1 Decompressor for an internal combustion engine |
| 12/08/1994 | DE4316991A1 Method for operating a compression-ignition internal combustion engine |
| 12/01/1994 | DE4417309A1 Reciprocating-piston internal combustion engine with compression control |
| 11/22/1994 | US5365895 Variable valve lift mechanism for internal combustion engine |
| 11/10/1994 | WO1994025743A1 Method and devices for controlling the combustion of a four-stroke engine |
| 10/25/1994 | US5357936 Engine of a spark ignition type |
| 10/11/1994 | US5353763 Method of supplying a combustible gas into the combustion chamber of an internal combustion engine in two phases |
| 09/29/1994 | WO1994021908A1 Controlled variable compression ratio internal combustion engine |
| 09/29/1994 | WO1994021905A1 Improvements to compression or spark ignition four-stroke internal combustion engines having a variable compression ratio enabling high supercharging pressure levels |
| 09/22/1994 | DE4408646A1 Supercharged reciprocating piston internal combustion engine in the nature of a slider crank engine |
| 09/21/1994 | EP0615578A1 Internal combustion engine with variable combustion chamber |
| 08/30/1994 | US5341771 Internal combustion engine with variable combustion chambers and increased expansion cycle |
| 08/02/1994 | CA1331152C Multi-cylinder engine with uniform cylinder sensitivity to knocking |
| 07/07/1994 | DE4316719A1 Vehicle engine with variable compression ratio |
| 05/11/1994 | EP0596860A2 Method for variable valve timing for an internal combustion engine |
| 04/28/1994 | DE4236007A1 Four-stroke IC engine starting with air intake control - overrides normal operations of air, fuel and ignition controls in order to secure optimum mixture ratio for ignition |
| 04/07/1994 | DE4232191C1 Device to adjust eccentricity of eccentric radial bearing - has hydraulic double-piston driving unit and releaseable locking device to move eccentric ring |
| 04/07/1994 | DE4226361A1 Fuel-air mixt. compressing IC engine - has remaining space during compression varied w.r.t. mixt. feed quality in direction of best compression ratio |
| 02/24/1994 | DE4227699A1 Compression-ratio adjustment for mixture-compressing engine - involves separate cylinder liner sliding axially in cylinder-block |
| 02/08/1994 | CA1326828C Compression ratio-changing device for internal combustion engines |
| 02/03/1994 | DE4309627A1 Supercharged IC engine with charge air cooler - has geometrical compression engine ratio controlled to be at least 8.5 |
| 01/06/1994 | WO1994000681A1 A method and a device for changing the compression ratio in an internal combustion engine |
| 01/06/1994 | WO1994000679A1 A method for controlling the working cycle in an internal combustion engine and an engine for performing said method |
| 01/05/1994 | DE4220664A1 IC engine with variable swept volume and compression ratio - involves displacement of stroke pin in axial direction to crankshaft for moving crankshaft bearing point and displacement of piston floor plane |
| 11/25/1993 | WO1993023664A1 Method and device for varying the compression of an internal combustion engine |
| 11/09/1993 | CA1324041C Method and apparatus for continuous camlobe phasing |
| 11/03/1993 | EP0568214A1 Internal combustion engine with adaptive control of compression ratio |
| 10/26/1993 | US5255637 Internal combustion engine with adaptive control of compression ratio |
| 10/14/1993 | DE4211589A1 IC engine with variable compression ratio - has conventional head and sliding cylinder within block displaced by hydraulically-operated sliders depending on load and rpm |
| 09/30/1993 | DE4210029A1 Engine with adjustable compression chamber - has liner adjustable axially between cylinder wall and piston |
| 09/22/1993 | CN1076509A Piperazine derivatives |
| 09/21/1993 | US5245962 Variable length connecting rod for internal combustion engine |
| 09/01/1993 | EP0557520A1 Pressure change-over valve for mutual operation between pressure receiving pistons |
| 06/23/1993 | EP0547566A1 Method of controlling the air admission in the combustion chamber for an internal combustion engine of a piston type in two phases |
| 06/10/1993 | WO1993011350A1 Internal combustion engine with variable combustion chamber |
| 06/10/1993 | CA2125039A1 Internal combustion engine with variable combustion chamber |
| 06/09/1993 | EP0494220B1 A variable compression ratio internal combustion engine |
| 05/18/1993 | US5211140 Decompressor for internal combustion engine |
| 05/04/1993 | CA1317125C Crankshaft assembly for variable stroke engine for variable compression |
| 04/08/1993 | DE4232044A1 Mixture control for ic engine with temperature limiting - has proportion of exhaust gases recycled when engine torque is high and with stoichiometric mixture |
| 03/23/1993 | US5195469 Controlled variable compression ratio internal combustion engine |
| 03/09/1993 | US5191862 Reciprocating piston with variable compression height for internal combustion engines |
| 03/03/1993 | EP0529638A1 Reciprocating engine of a spark ignition type |
| 03/03/1993 | EP0293370B1 Fluid energizing method and apparatus |
| 02/23/1993 | US5188066 Internal combustion engine |
| 02/02/1993 | US5183013 Two-cycle diesel engine |
| 01/14/1993 | DE4122553A1 Reciprocating piston engine to burn petrol or alcohol - Has compression ratio, which is larger in alcohol operation than petroleum operation. |
| 01/12/1993 | US5178109 Heat-insulating engine with swirl chambers |
| 01/12/1993 | US5178103 Variable compression ratio piston |
| 01/07/1993 | DE4120822A1 Engine crankshaft misalignment control support - has hydraulic thruster coupled by levers to cylinder block and crankcase |
| 11/25/1992 | EP0515183A1 Improved centrifugally responsive compression release mechanism |
| 11/11/1992 | CN2121540U Diesel engine compression ration measuring and caculating rule |
| 10/20/1992 | US5156123 Engine with variable combustion chamber |
| 09/29/1992 | US5150674 Centrifugally responsive compressing release mechanism |
| 09/16/1992 | EP0503973A1 Heat-insulating engine with swirl chambers |
| 09/15/1992 | US5146879 Variable compression ratio apparatus for internal combustion engine |
| 08/20/1992 | DE4104872A1 Throttle-free load control for Otto engine - using two inlet valves per cylinder operated by two cam shafts |
| 07/07/1992 | US5127372 Exhaust silencer system for two-cycle engine |
| 07/07/1992 | CA1304691C Compression-ignition engine with variable air compression ratio |
| 07/01/1992 | EP0492346A1 Internal combustion engine, especially Diesel engine |
| 07/01/1992 | EP0351420B1 Compression ignition engine with variable swept volume |
| 06/25/1992 | DE4040274A1 Reciprocating piston IC engine - has dead centre adjustable dependent upon temp. |
| 06/23/1992 | US5123388 Otto-cycle engine |
| 05/29/1992 | WO1992008884A1 Pressure change-over valve for mutual operation between pressure receiving pistons |
| 05/19/1992 | US5113809 Axial cylinder internal combustion engine having variable displacement |
| 04/08/1992 | EP0478656A1 Arrangement at an internal combustion engine. |
| 04/07/1992 | US5101776 Engine with variable compression ratio |
| 03/12/1992 | DE4028594A1 Compression ratio setter for IC engine - calculates desired value of ratiofrom smoothed readings from detectors of engine and fuel parameters |
| 03/03/1992 | US5093792 Combustion prediction and discrimination apparatus for an internal combustion engine and control apparatus therefor |
| 01/28/1992 | US5083533 Two-stroke-cycle engine with variable valve timing |
| 01/09/1992 | DE4038549C1 IC engine oil pressure regulator - has piston control chamber connected to oil circuit pump assembly |
| 12/03/1991 | US5069178 Engine with variable combustion chamber |
| 11/13/1991 | EP0347428B1 Two-cycle engine and method of operation |
| 11/12/1991 | US5063883 Detonation control device for an internal combustion engine |
| 10/03/1991 | WO1991014860A1 Controlled variable compression ratio internal combustion engine |
| 09/05/1991 | DE4006012A1 IC engine with variable compression space - has auxiliary cylinder connected to each main cylinder |
| 08/29/1991 | DE4005903A1 Adjustable trunk-type piston - has drain passage from slipping in front of control chamber |
| 08/27/1991 | CA1288052C Internal combustion engine |
| 08/07/1991 | EP0440314A2 Method for variable valve timing for an internal combustion engine |
| 07/31/1991 | CN1053472A 发动机 Engine |
| 07/24/1991 | EP0438252A1 An internal combustion engine |
| 07/24/1991 | EP0438121A1 Variable compression ratio apparatus for internal combustion engine |
| 07/17/1991 | EP0436592A1 Engine with variable compression ratio |
| 07/16/1991 | US5031582 Internal combustion engine providing scavenging with combustion chamber volume control |
| 06/26/1991 | EP0434646A1 Top dead centre varying system for an internal combustion engine |
| 06/04/1991 | US5020487 Internal combustion engine with load-responsive valve control for combustion chamber scavenging |
| 05/16/1991 | WO1991006751A1 Combustion chamber |
| 05/15/1991 | EP0427334A1 Two-stroke-cycle engine with variable valve timing |
| 05/10/1991 | CA2029396A1 Two-stroke-cycle engine with variable valve timing |
| 05/08/1991 | EP0426302A1 Engine with variable combustion chamber |
| 04/16/1991 | US5007391 Engine start facilitating valve |
| 04/02/1991 | US5003936 Cylinder of an internal combustion engine having variable volume |
| 03/29/1991 | WO1991005142A1 A variable compression ratio internal combustion engine |
| 03/29/1991 | CA2066196A1 Variable compression ratio internal combustion engine |
| 03/20/1991 | CN1012096B Two-cycle engine and method of operation |