| Patents for F02D 13 - Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing (11,427) |
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| 02/21/1989 | US4805571 Internal combustion engine |
| 01/26/1989 | WO1989000643A1 Internal combustion engine |
| 01/25/1989 | EP0300679A1 Valve operating device for internal combustion engine |
| 01/10/1989 | US4796584 Intake control system for internal combustion engine and intake control valve used therein |
| 01/04/1989 | EP0297791A1 Valve operation control device for internal combustion engine |
| 01/03/1989 | US4794891 Method for operating an internal combustion engine |
| 12/29/1988 | WO1988010362A1 Exhaust valve throttling mechanism for two-stroke engine |
| 12/28/1988 | CA1247483A Compression release engine retarder for multi- cylinder internal combustion engines |
| 12/27/1988 | US4793347 Exhaust timing control device for two cycle engines |
| 12/27/1988 | US4793307 Rocker arm decoupler for two-cycle engine retarder |
| 12/27/1988 | US4793296 Valve operating mechanism for internal combustion engine |
| 12/21/1988 | CN87103742A Cylinder-closing gasoline saver for automobile gasoline engine |
| 12/15/1988 | DE3735319A1 Exhaust system for a two-stroke internal combustion engine |
| 12/14/1988 | EP0294682A1 Rocker arm decoupler |
| 12/13/1988 | US4790274 Valve operating mechanism for internal combustion engine |
| 11/23/1988 | EP0291792A2 Method of feeding a four-stroke reciprocating-piston engine |
| 11/17/1988 | DE3814484A1 Diesel engine unit |
| 11/16/1988 | CN88102531A Scavenge valve for two-cycle engine |
| 11/15/1988 | US4784367 Scavenge valve for a two-cycle engine |
| 11/10/1988 | DE3714192A1 Method of controlling an exhaust turbocharger |
| 11/10/1988 | DE3712750A1 Two-stroke internal combustion engine, especially of reciprocating piston type |
| 11/09/1988 | CN87102938A Universal variable rocker-arm cylinder-down oil saver |
| 11/03/1988 | WO1988008482A1 Scavenge valve for a two-cycle engine |
| 10/19/1988 | EP0287038A2 Exhaust- timing controlling device and method for an internal combustion engine |
| 10/18/1988 | US4777914 Valve operating apparatus for an internal combustion engine |
| 10/12/1988 | EP0285877A1 Valve control device |
| 10/12/1988 | CN87214743U Oil-saving actuator in a closed cylinder |
| 10/11/1988 | US4776305 Exhaust timing control device for two-cycle engines |
| 09/20/1988 | US4771742 Method for continuous camlobe phasing |
| 09/15/1988 | DE3706947A1 Swirl piston method, for example used for a diesel engine which has run dry and for the cylinder shut-off, with pulse injection for saving fuel and reducing pollutant emissions |
| 09/13/1988 | US4770060 Apparatus and method for variable valve timing |
| 09/06/1988 | US4768473 Exhaust timing control apparatus |
| 08/31/1988 | CN87215817U Closed cylinder petrol-saving electronic controller |
| 08/30/1988 | US4766854 Exhaust valve throttling mechanism for two-stroke engine |
| 08/24/1988 | EP0279265A1 Valve device with a hydraulic transmission and variable characteristic by means of sliding valve control |
| 08/24/1988 | CN88100461A Valve gear with hydranlic transfer and variable characteristic controlled link motion |
| 08/16/1988 | US4763613 Exhaust timing control system for a two cycle engine |
| 08/03/1988 | EP0276533A1 Valve operating mechanism for internal combustion engine |
| 08/03/1988 | EP0276532A1 Valve operating mechanism for internal combustion engine |
| 08/03/1988 | CN87203835U Shut off cylinder fuel economizer of diesel engine |
| 07/26/1988 | US4759321 Valve timing arrangement for internal combustion engine having multiple inlet valves per cylinder |
| 07/26/1988 | US4759188 Method for introduction of charging air into the cylinder of an internal combustion engine and an engine for undertaking the method |
| 06/21/1988 | US4751899 Two-cycle engine |
| 06/15/1988 | CN87208639U Electromagnetic cut-out valve |
| 06/01/1988 | EP0269605A1 Engine brake in an internal-combustion engine for a motor vehicle |
| 06/01/1988 | EP0269125A2 Supercharged engine |
| 05/25/1988 | EP0268433A1 Method of controlling an air/fuel ratio for an internal combustion engine |
| 05/24/1988 | CA1237034A1 Engine valve timing control system |
| 05/18/1988 | EP0267244A1 Engines for use with gaseous fuels |
| 04/27/1988 | EP0264706A1 Internal-combustion engine operating process |
| 04/19/1988 | US4738233 Intake system for internal combustion engines |
| 04/13/1988 | CN87200037U Engine |
| 04/06/1988 | EP0262769A2 Internal combustion engine having two intake valves per cylinder |
| 03/10/1988 | WO1988001682A1 Reciprocatory machines |
| 03/09/1988 | EP0259106A1 Valve operating apparatus in an internal combustion engine |
| 03/02/1988 | CN86100053B Process and system for compression release engine retarding |
| 02/16/1988 | US4724809 Method and apparatus utilizing valve throttling and charge stratification in the operation of an internal combustion engine |
| 02/10/1988 | CN86205030U Oil-saving solenoid valve controlling device for stopping cylinder of diesel engine |
| 02/09/1988 | US4723514 Exhaust timing control system for two-cycle engines |
| 02/04/1988 | DE3623159A1 Method for utilising stored compressed air, generated by braking energy, as combustion air for internal combustion engines in motor vehicles |
| 02/02/1988 | US4722315 Method for improved internal exhaust gas recirculation in an internal combustion engine |
| 02/02/1988 | US4722308 Engine with split crankshaft and crankshaft half disabling means |
| 01/26/1988 | US4720977 Method and device for operation of a supercharged internal combustion engine |
| 12/29/1987 | US4715332 Electromagnetically-actuated positioning system |
| 12/22/1987 | US4714063 Intake system for internal combustion engine |
| 12/09/1987 | EP0248655A2 Swing beam internal combustion engines |
| 12/03/1987 | WO1987007323A1 Engines for use with gaseous fuels |
| 12/01/1987 | US4709683 Internal combustion engine with a positive displacement supercharger mechanically driven from the engine crankshaft |
| 11/25/1987 | EP0246877A2 Exhaust timing control device for two-cycle engines |
| 11/19/1987 | EP0246093A2 Exhaust timing control system for a two cycle engine |
| 11/19/1987 | EP0245331A1 Two stroke internal combustion engine. |
| 11/17/1987 | US4706617 Two-cycle engine |
| 11/03/1987 | US4703734 Multi-valve internal combustion engine |
| 10/20/1987 | US4700684 Method of controlling reciprocating four-stroke internal combustion engines |
| 09/29/1987 | US4696265 Device for varying a valve timing and lift for an internal combustion engine |
| 09/17/1987 | DE3610131A1 Internal combustion engine, especially diesel engine, as drive unit for vehicles |
| 09/08/1987 | US4691670 Installation for the control of the charging cycle in internal combustion engines |
| 09/02/1987 | EP0234853A1 Apparatus for variable valve timing for an internal combustion engine. |
| 07/28/1987 | US4682576 Intake system for diesel cycle engines |
| 07/21/1987 | US4680932 Apparatus for supercharging an internal combustion engine |
| 07/16/1987 | WO1987004218A1 Control equipment for pulsation in suction-exhaust systems of internal combustion engines |
| 06/23/1987 | US4674451 Valve control arrangement for internal combustion engines with reciprocating pistons |
| 06/16/1987 | US4672925 Two-cycle engine |
| 06/16/1987 | US4672924 Two-cycle engine |
| 06/16/1987 | EP0088106B1 Control means of the combustion cycle in an internal combustion engine |
| 06/03/1987 | EP0224152A1 Mechanical-hydraulic valve control process for engines and machines |
| 05/21/1987 | WO1987003043A1 Improvement to two stroke internal combustion engines and implementation method |
| 05/12/1987 | US4664070 Hydro-mechanical overhead for internal combustion engine |
| 05/05/1987 | US4662332 Engine braking control system |
| 04/28/1987 | US4660514 Two-cycle internal combustion engine including means for varying cylinder port timing |
| 04/07/1987 | US4655178 Cocmpression relief engine brake for internal combustion engines |
| 04/01/1987 | EP0216647A1 Valve control system for an internal-combustion engine with disconnectable rockers |
| 03/04/1987 | EP0212857A1 Exhaust timing control apparatus |
| 02/25/1987 | EP0211170A1 Engine retarding method and apparatus |
| 02/17/1987 | US4643156 Internal combustion engine with a positive displacement supercharger mechanically driven from the engine crankshaft |
| 02/10/1987 | US4641613 Process for the starting and low-load running of a diesel engine and a diesel engine putting this process into practice |
| 02/04/1987 | EP0210829A1 Exhaust timing control apparatus |
| 02/04/1987 | CN86103699A Engine retarding method and apparatus |
| 01/28/1987 | CN86203787U Fuel-economizing device for automobile clutch engine stop cylinder |
| 01/21/1987 | EP0209506A1 A method for controlling the working cycle of an internal combustion engine |