| Patents for F01L 9 - Valve-gear or valve arrangements actuated non-mechanically (7,196) |
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| 09/18/1990 | US4957075 Apparatus for controlling inlet of exhaust valves |
| 09/18/1990 | US4957074 Closed loop electric valve control for I. C. engine |
| 09/11/1990 | US4955334 Control apparatus for valve driven by electromagnetic force |
| 08/30/1990 | DE3911495C1 Hydraulic valve actuation unit for piston engines |
| 08/29/1990 | EP0384663A1 Electromagnetic force valve driving apparatus |
| 08/07/1990 | US4945869 Two cycle crankcase variable inlet timing |
| 07/31/1990 | CA1272086A1 Electromagnetically-actuated positioning system |
| 07/31/1990 | CA1272085A1 Electromagnetically-actuated positioning system |
| 07/31/1990 | CA1272084A1 Electromagnetically-actuated positioning mechanisms |
| 07/24/1990 | US4942852 Electro-pneumatic actuator |
| 07/24/1990 | US4942851 Electromagnetic valve control system |
| 07/12/1990 | WO1990007640A1 Apparatus for feeding air to an internal combustion engine, after combustion |
| 07/12/1990 | WO1990007639A1 Electromagnetic valve actuator |
| 07/12/1990 | WO1990007638A1 Device for step-driving valves |
| 07/12/1990 | WO1990007637A1 Electromagnetic valve actuator |
| 07/12/1990 | WO1990007636A1 Electromagnetic valve actuator |
| 07/12/1990 | WO1990007635A1 Electromagnetic valve actuator |
| 07/12/1990 | WO1990007634A1 Electromagnetic valve actuator |
| 07/11/1990 | EP0377254A1 Pneumatic actuator |
| 07/11/1990 | EP0377252A1 Electro-pneumatic actuator |
| 07/11/1990 | EP0377251A1 Compact valve actuator |
| 07/11/1990 | EP0377250A1 Enhanced efficiency valve actuator |
| 07/11/1990 | EP0377246A1 Air powered valve actuator |
| 07/11/1990 | EP0377244A1 Fast acting valve |
| 07/06/1990 | CA2007297A1 Pneumatic actuator |
| 07/06/1990 | CA2007102A1 Compact valve actuator |
| 07/06/1990 | CA2007087A1 Enhanced efficiency valve actuator |
| 07/06/1990 | CA2007082A1 Fast acting valve |
| 07/06/1990 | CA2007081A1 Air powered valve actuator |
| 07/06/1990 | CA2007076A1 Electro-pneumatic actuator |
| 07/04/1990 | EP0376836A1 Device for introducing a carburetted mixture to the combustion chamber of a two-stroke engine |
| 07/04/1990 | EP0376716A1 Control apparatus for valve driven by electromagnetic force |
| 07/04/1990 | EP0376715A2 Electromagnetic-force valve-driving apparatus |
| 07/04/1990 | EP0376714A2 Control system for internal combustion engine |
| 07/04/1990 | EP0376561A1 Valve control system for internal combustion engine |
| 07/04/1990 | EP0375742A1 Hydraulic engine valve lifter assembly. |
| 07/03/1990 | US4938179 Valve control system for internal combustion engine |
| 06/27/1990 | EP0375464A1 Electromagnetically operated valve assembly for use in internal combustion engine |
| 06/19/1990 | US4934348 Valve operation control system of internal combustion engine |
| 06/12/1990 | US4933862 Engine control apparatus |
| 06/05/1990 | US4930465 Solenoid control of engine valves with accumulator pressure recovery |
| 06/05/1990 | US4930464 Hydraulically operating actuating device for a lift valve |
| 06/05/1990 | US4930463 Electro-rheological valve control mechanism |
| 05/16/1990 | EP0368675A1 Electromagnetic valve control system |
| 05/09/1990 | EP0367553A1 Valve control system for internal combustion engine |
| 05/09/1990 | EP0367552A1 Valve control system for internal combustion engine |
| 05/09/1990 | EP0367448A1 Valve control system for internal combustion engine |
| 05/03/1990 | WO1990004709A1 A four-stroke radial-piston engine |
| 05/03/1990 | WO1990004705A1 Electromagnetically driven valve controller |
| 05/02/1990 | EP0366490A2 Heat-insulating engine with swirl chamber |
| 04/24/1990 | US4919089 Valve operating system for internal combustion engine |
| 04/19/1990 | DE3834882A1 Valve timing device for internal combustion engines |
| 04/17/1990 | US4917056 Valve operation control system in internal combustion engine |
| 04/10/1990 | US4915015 Pneumatic actuator |
| 04/05/1990 | WO1990003500A1 High pressure, fast response, pressure balanced, solenoid control valve |
| 04/05/1990 | WO1990003499A1 Modular, self-contained hydraulic valve timing systems for internal combustion engines |
| 04/05/1990 | DE3833459A1 Hydraulic valve gear for an internal combustion engine |
| 03/28/1990 | CN2055194U Hydraulic variable flow valve |
| 03/14/1990 | EP0357938A1 Positioning device for a gas exchange valve of an internal-combustion engine |
| 03/13/1990 | US4908731 Electromagnetic valve actuator |
| 03/07/1990 | EP0356713A1 Electromagnetically actuated positioning device |
| 02/22/1990 | WO1990001617A1 Control device for a gas shuttle valve |
| 02/22/1990 | WO1990001616A1 Control device for a gas shuttle valve |
| 02/22/1990 | WO1990001615A1 Control device for a gas shuttle valve in an internal combustion engine |
| 02/22/1990 | WO1990001614A1 Electromagnetically actuated control device |
| 02/21/1990 | EP0354999A1 Positioning device for a gas exchange valve |
| 02/20/1990 | US4901684 Variable lift cam follower |
| 02/14/1990 | EP0354417A1 Positioning device for a gas exchange valve |
| 02/13/1990 | US4899700 Pneumatically powered valve actuator |
| 02/06/1990 | US4898129 Valve control of internal combustion engines by means of a cam-driven rotary piston pump |
| 01/30/1990 | US4896633 Valve control of internal combustion engines by means of a rotary piston pump with unequal pumping output |
| 01/09/1990 | US4892067 Valve control system for engines |
| 12/27/1989 | EP0347978A1 Pneumatic actuator with permanent magnet control valve latching |
| 12/27/1989 | EP0347977A1 Pneumatic actuator with solenoid operated control valves |
| 12/26/1989 | US4889085 Valve operating device for internal combustion engine |
| 12/26/1989 | US4889084 Valve control device with magnetic valve for internal combustion engines |
| 12/20/1989 | EP0347211A1 Valve operation control system of internal combustion engine |
| 12/19/1989 | US4887562 Modular, self-contained hydraulic valve timing systems for internal combustion engines |
| 12/19/1989 | EP0345252A4 Variable lift cam follower. |
| 12/13/1989 | EP0345252A1 Variable lift cam follower. |
| 12/05/1989 | US4885658 Apparatus for controlling the operation of an electromagnetic fuel intake or exhaust valve of an internal combustion engine |
| 11/28/1989 | US4883025 Potential-magnetic energy driven valve mechanism |
| 11/15/1989 | EP0341440A1 Valve operating device with a magnetic valve for an internal-combustion engine |
| 11/07/1989 | US4878464 Pneumatic bistable electronic valve actuator |
| 10/24/1989 | US4875441 Enhanced efficiency valve actuator |
| 10/17/1989 | US4873949 Method of and apparatus for controlling valve operation in an internal combustion engine |
| 10/17/1989 | US4873948 Pneumatic actuator with solenoid operated control valves |
| 10/10/1989 | US4872425 Air powered valve actuator |
| 10/03/1989 | US4870930 Engine valve control apparatus |
| 09/27/1989 | EP0334272A1 Hydraulic valve opening unit in the cylinder-head of an internal combustion engine |
| 09/26/1989 | CA1261036A1 Automotive valve actuation method |
| 09/21/1989 | WO1989008770A1 Titanium poppet valve |
| 09/21/1989 | DE3807699A1 Adjustable hydraulic valve timing gear |
| 09/19/1989 | US4867111 Arrangement for the actuation of a gas-exchange disk valve |
| 09/14/1989 | DE3806969A1 Electrohydraulic adjusting mechanism for actuation of the inlet and exhaust valves in internal combustion engines |
| 09/12/1989 | US4864984 Rotary valve internal combustion engine |
| 08/24/1989 | DE3809954C1 Device for the hydraulic opening of a lifting valve |
| 08/22/1989 | US4858956 High pressure, fast response, pressure balanced, solenoid control valve |
| 08/16/1989 | EP0328195A2 Pneumatic electronic valve actuator |
| 08/16/1989 | EP0328194A1 Potential-magnetic energy driven valve mechanism |