| Patents for F01L 9 - Valve-gear or valve arrangements actuated non-mechanically (7,196) |
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| 12/29/1993 | EP0455763B1 Hydraulic control device for the valves of a multi-cylinder internal-combustion engine |
| 12/29/1993 | EP0455762B1 Electro-hydraulic control device for an internal-combustion engine valve |
| 12/29/1993 | EP0455761B1 Hydraulic control device for valves of internal combustion engines |
| 12/29/1993 | CN1080024A Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 12/21/1993 | US5271229 Method and apparatus to improve a turbocharged engine transient response |
| 12/21/1993 | CA1325364C Valve operation control system of internal combustion engine |
| 12/15/1993 | CN1079533A Method and apparatus to reduce engine combustion noise utilizing unit valve actuation |
| 12/14/1993 | US5269269 Adjusting device for gas exchange valves |
| 12/09/1993 | WO1993024749A1 Method and apparatus to reduce engine combustion noise utilizing unit valve actuation |
| 12/09/1993 | WO1993024748A1 Method and apparatus for exhaust gas recirculation via reverse flow motoring |
| 12/09/1993 | WO1993024740A1 Method and apparatus to improve engine transient response |
| 12/09/1993 | WO1993024739A1 Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 12/09/1993 | WO1993024738A1 Engine braking utilizing unit valve actuation |
| 12/07/1993 | CA1324932C Pneumatic actuator with permanent magnet control valve latching |
| 12/01/1993 | EP0489796A4 Fluid actuators |
| 11/23/1993 | US5263441 Hydraulic valve control apparatus for internal combustion engines |
| 11/18/1993 | EP0422228B1 Electromagnetic valve actuator |
| 11/18/1993 | EP0406444B1 Electromagnetic valve actuator |
| 11/10/1993 | EP0569088A1 Pneumatically powered actuator with hydraulic latching |
| 11/09/1993 | US5259345 Pneumatically powered actuator with hydraulic latching |
| 11/03/1993 | EP0567552A1 A dual mode, phase shifting, cam engine |
| 10/26/1993 | US5255650 Engine braking utilizing unit valve actuation |
| 10/26/1993 | US5255641 Variable engine valve control system |
| 10/26/1993 | US5255639 Integral EVT/cylinder head assembly with self-purging fluid flow |
| 10/19/1993 | US5253619 Hydraulically powered actuator with pneumatic spring and hydraulic latching |
| 10/14/1993 | WO1993020345A1 Control system for an internal combustion engine |
| 10/14/1993 | WO1993020337A1 Lost motion actuator |
| 10/14/1993 | DE4211632A1 Valve timing gear in IC engine - has transmission element with device for preset stroke adjustment of lifting valve |
| 10/14/1993 | CA2130914A1 Control system for an internal combustion engine |
| 10/07/1993 | DE4210746A1 Four=stroke IC-engine - has cylinder liner, to replace intake or exhaust valve, with turned collar, subjected to hydraulic flow for displacement |
| 09/30/1993 | WO1993014303A3 Engine intake valve selective deactivation system and method |
| 09/29/1993 | EP0441909B1 Valve control device with magnetic valve for internal combustion engines |
| 09/28/1993 | US5248123 Pilot operated hydraulic valve actuator |
| 09/15/1993 | EP0560430A1 Hydraulic actuator with hydraulic springs |
| 09/09/1993 | DE4206696A1 Hydraulic lifter for vehicle IC engine - has oil supply diverted from main oil circuit through rapidly-closing solenoid valve to intake valve control unit |
| 08/24/1993 | US5237976 Engine combustion system |
| 08/24/1993 | US5237968 Apparatus for adjustably controlling valve movement and fuel injection |
| 08/11/1993 | EP0554923A1 Resilient hydraulic actuator |
| 08/10/1993 | US5233951 Flow restriction controlled variable engine valve system |
| 08/04/1993 | EP0553171A1 A method of and apparatus for testing an engine or a compressor. |
| 08/03/1993 | US5231959 Intake or exhaust valve actuator |
| 07/22/1993 | WO1993014339A1 Engine valve seating velocity hydraulic snubber |
| 07/22/1993 | WO1993014303A2 Engine intake valve selective deactivation system and method |
| 07/22/1993 | DE4300666A1 Actuator for IC engine valve - has electromagnets with dish shaped ring poles with wedges forming cylindrical chamber for armature |
| 07/15/1993 | DE4225012C1 Hydraulic actuator for lifting valve with pressurised oil piston - has play compensation piston, located between working piston and valve, and loaded by compression spring |
| 07/14/1993 | EP0550925A2 Pilot operated hydraulic valve actuator |
| 07/13/1993 | US5226401 Method and apparatus for exhaust gas recirculation via reverse flow motoring |
| 07/06/1993 | US5224683 Hydraulic actuator with hydraulic springs |
| 06/30/1993 | EP0548294A1 Recuperative engine valve system and method of operation. |
| 06/29/1993 | US5223812 Adjusting device for gas exchange valves |
| 06/29/1993 | US5222714 Electromagnetically actuated valve |
| 06/22/1993 | US5221072 Resilient hydraulic actuator |
| 06/16/1993 | EP0546820A1 Valve operating system in internal combustion engine |
| 06/16/1993 | EP0545979A1 Hydraulic valve tappet for an internal-combustion engine. |
| 06/10/1993 | WO1993011345A1 Engine valve seating velocity hydraulic snubber |
| 06/08/1993 | US5216988 Dual bucket hydraulic actuator |
| 06/08/1993 | US5216987 Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 06/01/1993 | US5215061 Control system for internal combustion engines |
| 06/01/1993 | CA1318556C Potential-magnetic energy driven valve mechanism |
| 05/15/1993 | WO1993001399A1 Recuperative engine valve system and method of operation |
| 05/13/1993 | DE4209590C1 Piston-type valve actuator - is used on ic engine poppet valve and has small inlet and release valves for high-pressure compressible fluid |
| 05/11/1993 | US5209453 Laminated type piezoelectric apparatus |
| 05/05/1993 | EP0455760B1 Hydraulic control device for an internal-combustion engine valve |
| 05/05/1993 | CN1071733A Device for hydraulically actuating outlet valve of reciprocating internal combustion engine |
| 04/29/1993 | WO1993008400A1 Engine combustion system |
| 04/28/1993 | EP0539320A1 Device for hydraulically operating an exhaust valve of an internal combustion piston engine |
| 04/20/1993 | US5203830 Method and apparatus to reduce engine combustion noise utilizing unit valve actuation |
| 04/15/1993 | DE4232573A1 Valve for IC engine combustion chamber - has second pressure chamber, connected to first chamber, and limited by pressure piston, subject to combustion chamber pressure |
| 04/13/1993 | US5201296 Control system for an internal combustion engine |
| 04/08/1993 | DE4236066A1 Four=stroke double piston engine - has hydraulic valve control, parallel to cylinder liner |
| 04/08/1993 | DE4132891A1 Pneumatically operated valve for IC engine with electronic timing control - has pneumatic piston on valve stem in cylinder on top of combustion cylinder and with valve deflection monitor |
| 04/07/1993 | EP0536001A1 Control system for internal combustion engines |
| 04/07/1993 | EP0535275A1 Electro/hydraulic variable valve timing system |
| 04/06/1993 | US5199392 For gas exchange valves in internal combustion engines |
| 04/01/1993 | DE4228214A1 Drive lever for piezoelectric powered valve - has shaped lever attached to mounting strip by weakened bridge of low density material. |
| 04/01/1993 | DE4132500A1 Cylinder-head valve with variable timing for IC engine - has sprung coupling to camshaft with hydraulic system with control valves to shorten cylinder valve timing. |
| 03/30/1993 | US5197419 Internal combustion engine hydraulic actuated and variable valve timing device |
| 03/23/1993 | US5195474 Oil supply system in internal conbustion engine |
| 03/23/1993 | CA1314784C High pressure, fast response, pressure balanced, solenoid control valve |
| 03/23/1993 | CA1314775C Pneumatic actuator with solenoid operated control valves |
| 03/23/1993 | CA1314774C Pneumatic electronic valve actuator |
| 03/23/1993 | CA1314773C Pneumatically powered valve actuator |
| 03/23/1993 | CA1314772C Repulsion actuated potential energy driven valve mechanism |
| 03/16/1993 | US5193495 Internal combustion engine valve control device |
| 03/16/1993 | US5193494 Valve operating system for internal combustion engine |
| 03/16/1993 | CA1314450C Valve operating system for internal combustion engine |
| 03/02/1993 | US5190262 Hydraulically-operated valve assembly |
| 03/02/1993 | US5190013 Engine intake valve selective deactivation system and method |
| 02/18/1993 | DE4225329A1 Compact and variable valve operation for IC engine - has inlet and outlet valves operated by individual solenoids controlled by CPU |
| 02/02/1993 | US5183011 Method of controlling the supply of fuel in hydrogen-fueled engine |
| 01/26/1993 | US5181484 Cam timing control device for automotive engine |
| 01/14/1993 | DE4218104A1 Waste heat recovery system for reciprocating piston engine - consists of heat accumulator fastened to piston to supply heat exchanger to maintain compression chamber temperature. |
| 01/07/1993 | DE4220689A1 IC engine cylinder scavenging system with lock air facility - has pressure regulator between sealing chamber and pneumatic spring chamber and pneumatic valve spring |
| 12/30/1992 | EP0520633A2 Hydraulically operated valve control system for an internal combustion engine |
| 12/08/1992 | US5168848 Engine brake for a multi-cylinder internal combustion engine |
| 12/08/1992 | US5168840 Temperature compensated damping mechanism for hydraulic engine valve actuator |
| 12/03/1992 | DE4117566A1 IC engine valve timing gear - has hydraulic valve play compensators between cam follower and each valve stem |
| 11/25/1992 | EP0515307A1 Control device for exhaust valves of an internal combustion engine |
| 11/24/1992 | US5165369 Hydraulic valve control apparatus for a multicylinder internal combustion engine |
| 11/19/1992 | EP0513892A2 Method of operating a two-stroke-cycle engine with variable valve timing in a four-strike-cycle mode |