| Patents for F02B 69 - Internal-combustion engines convertible into other combustion-engine type, not provided for in group; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types (1,005) |
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| 12/23/1997 | US5699758 Method and apparatus for multiple cycle internal combustion engine operation |
| 10/15/1997 | EP0801223A1 Internal combustion engine with methane injection system |
| 10/14/1997 | US5676117 Lawn mower powered by alternative fuels |
| 10/02/1997 | DE19542479A1 Stroke extender for IC-engine |
| 09/16/1997 | US5666926 Internal combustion engine with methane injection system |
| 09/10/1997 | EP0793772A1 Method and apparatus for operation of engines |
| 09/09/1997 | US5664535 Gas combustion engine, and method of manufacturing the gas combustion engine |
| 06/12/1997 | WO1997021027A1 Internal combustion engine |
| 04/24/1997 | DE19539170A1 Operating method for road vehicle internal combustion engine |
| 02/04/1997 | US5598819 Piston engine cycles |
| 01/14/1997 | US5592924 Internal combustion engine adapted to operate selectively with injection of gasoline or LPG |
| 01/09/1997 | DE19545153C1 Verbrennungsmotor mit einem Ventilsystem zum Betrieb im Zweitakt- oder Viertaktmodus Internal combustion engine with a valve system for operating in two-stroke or four-stroke mode |
| 11/14/1996 | WO1996035863A1 Liquid fuel injection system |
| 11/14/1996 | CA2220492A1 Liquid fuel injection system |
| 10/22/1996 | US5566591 Engine/transmission adapter kit |
| 10/22/1996 | US5566450 Flexibly making engine block assemblies |
| 09/18/1996 | EP0732493A1 Flexibly making engine block assemblies |
| 09/18/1996 | EP0643798B1 Method and apparatus to improve engine transient response |
| 09/17/1996 | CA2168916A1 Flexibly making engine block assemblies |
| 08/07/1996 | EP0725208A1 Internal combustion engine adapted to operate selectively with injection of gasoline or LPG |
| 07/25/1996 | CA2167002A1 Method and apparatus for providing multipoint gaseous fuel injection to an internal combustion engine |
| 07/24/1996 | EP0723073A2 Method and apparatus for providing multipoint fuel injection to an internal combustion engine |
| 07/04/1996 | DE19516144C1 Fuel supply unit for mixture-compressing IC engine |
| 06/25/1996 | US5529032 Valve-operation control system for internal combustion engine |
| 06/12/1996 | EP0715684A1 Gas combustion engine, and method of manufacturing the gas combustion engine |
| 05/21/1996 | US5517951 Two stroke/four stroke engine |
| 05/14/1996 | US5515675 Apparatus to convert a four-stroke internal combustion engine to a two-stroke pneumatically powered engine |
| 01/30/1996 | US5487362 Combustion engine of the piston engine type |
| 10/19/1995 | WO1995027845A1 Method and apparatus for operation of engines |
| 10/04/1995 | CN2209217Y Motorcycle's engine |
| 09/13/1995 | EP0671550A1 Valve-operating control system for internal combustion engine |
| 06/28/1995 | CN2202185Y Gasoline engine for motorcycles |
| 06/21/1995 | EP0521969B1 Combustion engine of the piston engine type |
| 04/11/1995 | US5404851 Device for switching a combustion engine from one mode of operation to another mode of operation |
| 03/22/1995 | CN1027988C Transfer device for light oil and heavy oil |
| 03/16/1995 | DE4431798A1 Internal combustion engine for motor vehicles |
| 03/02/1995 | WO1995006196A1 Gas combustion engine, and method of manufacturing the gas combustion engine |
| 02/16/1995 | WO1995004876A1 Petrol to gas engine conversion |
| 02/08/1995 | EP0578637B1 Piston engine cycles |
| 01/12/1995 | DE4321893A1 Device for the formation of a mixture from liquid and gaseous fuels for internal combustion engines with applied ignition |
| 01/12/1995 | DE4321891A1 Method for the formation of a mixture from liquid and gaseous fuels, preferably bio fuels, for internal combustion engines with applied ignition |
| 12/20/1994 | USRE34807 Combustion system for dual fuel engine |
| 12/20/1994 | US5373632 Fabricating and machining procedures for crankcases for locomotive diesel engines |
| 12/20/1994 | US5373630 Cylinder conversion fabrication of crankcases for two-cycle V-type locomotive diesel engines |
| 12/14/1994 | EP0628708A1 A V type piston engine |
| 11/01/1994 | US5361035 Resonant cavity flexible fuel sensor and system |
| 10/18/1994 | US5355854 Supplemental gaseous fuel system for a diesel engine |
| 08/24/1994 | EP0611878A1 Method for constructing a multi-part cylinder block |
| 07/20/1994 | EP0567552A4 A dual mode, phase shifting, cam engine |
| 07/05/1994 | US5325834 Method of and conversion kit for converting an engine to hydraulically-actuated fuel injection system |
| 05/31/1994 | US5315981 Method for converting a diesel engine to a natural gas fueled engine |
| 05/25/1994 | CN2166235Y Liquid gas & gasoline two-purpose changover gear for gasoline-engine driven machine |
| 05/17/1994 | US5311847 Flathead adaption system for engine |
| 05/11/1994 | CN1086583A Engine for various fuels |
| 04/21/1994 | DE4335605A1 Ignition timing controller for internal combustion engine - retards and advances ignition according to whether or not knocking is detected |
| 03/31/1994 | WO1994007011A1 Multi-mode energy conserving engine |
| 03/02/1994 | EP0584575A1 Internal combustion engine having a mechanism for switching from one operating mode to another. |
| 02/16/1994 | CN1082143A Method and apparatus to improve engine response transient |
| 02/08/1994 | US5284116 Vehicle management computer |
| 01/19/1994 | EP0578637A1 Piston engine cycles. |
| 01/12/1994 | CN1023507C Inner combustion engine for propelling ships that transport gaseous fuel |
| 12/21/1993 | US5271229 Method and apparatus to improve a turbocharged engine transient response |
| 12/09/1993 | WO1993024740A1 Method and apparatus to improve engine transient response |
| 11/16/1993 | CA1324426C Combustion engine with multi-fuel capability |
| 11/03/1993 | EP0567552A1 A dual mode, phase shifting, cam engine |
| 07/20/1993 | US5228423 Dual-fuel engine |
| 06/29/1993 | US5222993 Ignition system for water-cooled gas engines |
| 05/19/1993 | CN1072241A Converter for light and heavy oils |
| 04/20/1993 | US5203305 Apparatus and methods for converting conventionally fueled engines to operate on an alternative fuel |
| 03/30/1993 | US5197432 Method of obtaining a longer stroke on an existing engine |
| 03/17/1993 | EP0387277B1 Cooled cylinder head |
| 03/16/1993 | US5193492 2-4 cycle change-over engine and its control system |
| 03/10/1993 | EP0530771A1 Rotary engine |
| 03/09/1993 | US5191858 Dual cycle engine |
| 03/09/1993 | US5191766 Hybrid internal combustion/steam 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. |
| 01/13/1993 | EP0521969A1 Combustion engine of the piston engine type. |
| 11/19/1992 | EP0513892A2 Method of operating a two-stroke-cycle engine with variable valve timing in a four-strike-cycle mode |
| 10/27/1992 | US5158044 Engine selectively operable in two- and four-cycle modes |
| 10/13/1992 | US5154141 For supplying charge air to an engine |
| 10/01/1992 | WO1992016729A1 Piston engine cycles |
| 09/29/1992 | US5150685 Apparatus and method for converting conventionally fueled engines to operate on an alternative fuel |
| 09/08/1992 | US5144916 Vehicular engine cooling apparatus |
| 08/25/1992 | US5140953 Dual displacement and expansion charge limited regenerative cam engine |
| 08/06/1992 | WO1992013178A1 A dual mode, phase shifting, cam engine |
| 07/21/1992 | US5131354 Method of operating a two-stroke-cycle engine with variable valve timing in a four-stroke-cycle mode |
| 06/23/1992 | US5123397 Vehicle management computer |
| 06/02/1992 | US5117801 Combustion system for dual fuel engine |
| 05/20/1992 | EP0486282A1 2-4 Cycle change-over engine and its control system |
| 05/20/1992 | CA2096647A1 Dual fuel injection system and a method of controlling such a system |
| 05/19/1992 | US5113805 Variable-cycle engine |
| 03/18/1992 | EP0475727A2 Engine selectively operable in two- and four-cycle modes |
| 02/12/1992 | EP0470721A1 V piston engines |
| 12/03/1991 | US5069178 Engine with variable combustion chamber |
| 11/19/1991 | US5065707 Oil-cooled cylinder head |
| 10/09/1991 | EP0450509A1 Internal combustion engine with at least an exhaust port in the cylinder |
| 09/24/1991 | US5050550 Hybrid step combustion system |
| 09/24/1991 | US5050544 Structure for mounting the same type of camshafts on different types of cylinder heads |
| 09/17/1991 | WO1991014086A1 Combustion engine of the piston engine type |
| 09/17/1991 | CA2078342A1 Combustion engine of the piston engine type |