| Patents for F01L 13 - Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations (9,664) |
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| 09/16/1993 | DE4206867A1 IC engine valve control mechanism - employs tongue of wear resistant material insertable between cam surface and cup tappet. |
| 09/15/1993 | EP0560323A1 Multi-cylinder internal combustion engine |
| 09/08/1993 | EP0559199A1 Valve-moving apparatus for internal combustion engine |
| 09/08/1993 | EP0558585A1 Internal combustion engine with compressor function. |
| 09/07/1993 | US5241927 Internal combustion engine with different exhaust and intake valve operating characteristics |
| 09/02/1993 | WO1993017227A1 Valve actuating mechanism for an internal combustion engine |
| 09/01/1993 | EP0458857B1 A method and a device for engine braking a four stroke internal combustion engine |
| 08/31/1993 | US5239952 Valve actuating apparatus |
| 08/31/1993 | US5239885 Camshaft with a deactivatable cam |
| 08/26/1993 | DE4205294A1 Double-stroke timing gear for IC engine valves - has eccentric cam, moving along eccentric cam path so that cam and cam path stroke cause valve stroke |
| 08/26/1993 | DE4205230A1 Ventilbetaetigungsmechanismus fuer eine brennkraftmaschine Ventilbetaetigungsmechanismus for an internal combustion engine |
| 08/26/1993 | DE4205211A1 Valve control unit for IC engine - has device to alter size of cam or valve part surface, facing hydraulic chamber |
| 08/19/1993 | DE4223172C1 Cylinder head for IC engine - bearing cover for cam shaft bearing also acts for bearing for eccentric shaft |
| 08/18/1993 | EP0555805A1 Automatic compression release device for starting an internal combustion engine |
| 08/17/1993 | US5236332 Method of controlling an internal combustion engine |
| 08/17/1993 | US5235940 Engine valve driving apparatus |
| 08/11/1993 | CA2080717A1 Mechanical compression release for an internal combustion engine |
| 08/10/1993 | US5233951 Flow restriction controlled variable engine valve system |
| 07/28/1993 | EP0552596A1 Push rods for pistons in compression release engine retarders |
| 07/22/1993 | DE4242634A1 Combustion engine valve control mechanism - has gear and worm drive between engine crankshaft and cam shafts, gear drive having conical wheels and worm drive slidable along own axis |
| 07/21/1993 | EP0551339A1 Improvements in or relating to driving connections between two rotatable bodies. |
| 07/15/1993 | DE4200510A1 Tappet for valve in IC engine - has toothed section engaging rack to move between two operating positions. |
| 07/08/1993 | WO1993013311A1 Automobile engine |
| 07/07/1993 | EP0550398A1 Push rods for pistons in compression release engine retarders |
| 07/07/1993 | EP0549997A1 Self-clipping slave piston |
| 07/07/1993 | EP0549996A1 Compression relief engine retarder clip valve |
| 07/04/1993 | CA2085935A1 Compression relief engine retarder clip valve |
| 07/04/1993 | CA2085934A1 Self-clipping slave piston |
| 07/04/1993 | CA2085870A1 Push rods for pistons in compression release engine retarders |
| 07/04/1993 | CA2085869A1 Master piston for a compression release engine retarder |
| 07/01/1993 | DE4212253C1 Engine valve timing and stroke adjustment - has stroke control piston spring-loaded against valve in cylinder separate from rocker-supporting cylinder |
| 06/22/1993 | US5220899 Internal combustion engine with air assist fuel injection control system |
| 06/22/1993 | US5220891 Variable cam engine |
| 06/16/1993 | EP0546820A1 Valve operating system in internal combustion engine |
| 06/16/1993 | EP0545979A1 Hydraulic valve tappet for an internal-combustion engine. |
| 06/15/1993 | US5218818 Device for controlling a by-pass valve |
| 06/08/1993 | US5216987 Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 06/01/1993 | US5215054 Valve control apparatus and method |
| 05/27/1993 | DE4138527A1 IC engine control with equalising leverage - has shaft between swivel lever and tappet for geometric transfer of slide face centre point |
| 05/26/1993 | EP0543210A1 Engine comprising a continuous braking device, particularly for an industrial vehicle |
| 05/26/1993 | EP0389609B1 Device for actuating the valves of internal combustion engines with adjustable valve-lifting cam |
| 05/19/1993 | DE4236892A1 Control for displacement valve with two separate cams - employs hydraulic pressure on projection from one cam for axial movement into engagement with toothed ring. |
| 05/19/1993 | DE4236877A1 Control of exhaust and inlet valves of multi-valve IC engine - involves two load exchange valves for each cylinder with individual cam per valve on common camshaft |
| 05/18/1993 | US5211143 Adjustable valve system for an internal combustion engine |
| 05/18/1993 | US5211140 Decompressor for internal combustion engine |
| 05/11/1993 | US5209201 Internal combustion engine |
| 05/06/1993 | DE4136143A1 Valve control mechanism for IC engine - has combination of two rocker arms which can be positively joined by locking lever |
| 05/05/1993 | EP0539616A1 Engine brake system for all types of diesel and gasoline engines |
| 05/04/1993 | US5207193 Valve operating system in internal combustion engine |
| 04/29/1993 | WO1993008377A1 Device for actuating the valves in an internal-combustion engine by means of rotating cams |
| 04/29/1993 | DE4135257A1 Device for operating valves in internal combustion engine |
| 04/27/1993 | US5205247 Infinitely variable lift cam follower with consistent dwell position |
| 04/20/1993 | US5203289 Variable timing mechanism |
| 04/13/1993 | US5201290 Compression relief engine retarder clip valve |
| 04/08/1993 | DE4211631A1 Valve drive with play compensation - has movement path limitation of slide, resulting in valve lift |
| 04/08/1993 | DE4142197A1 Rocker for valve drive - has cylindrical lock to connect independently movable rocker arms |
| 04/07/1993 | EP0535275A1 Electro/hydraulic variable valve timing system |
| 04/07/1993 | EP0397776B1 Mechanism for achieving variable valve lift |
| 04/01/1993 | DE4230877A1 Control for lift valve with two cams - comprises cam block containing two cams which is axially displaceable but non rotatable peripherally on camshaft |
| 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 | US5197447 Engine having valve stroke adjuster and fuel preheater |
| 03/30/1993 | US5197422 Compression release mechanism and method for assembling same |
| 03/24/1993 | EP0533474A2 Method of controlling an internal combustion engine |
| 03/23/1993 | US5195489 Push rods for pistons in compression release engine retarders |
| 03/23/1993 | US5195470 Variable cam engine |
| 03/23/1993 | CA1314774C Pneumatic electronic valve actuator |
| 03/16/1993 | US5193497 Valve arrangement |
| 03/16/1993 | US5193496 Variable action arrangement for a lift valve |
| 03/16/1993 | US5193494 Valve operating system for internal combustion engine |
| 03/16/1993 | CA1314450C Valve operating system for internal combustion engine |
| 03/04/1993 | DE4227392A1 Actuation method for IC engine valve - uses defined concave transfer section of support profile for cam |
| 03/04/1993 | DE4129036A1 Valve mechanism for IC engine - has light metal housing and actuation shaft working with spring-loaded pin |
| 03/03/1993 | EP0529642A2 Internal combustion engine with air assist fuel injection control system |
| 03/02/1993 | US5189998 Valve mechanism of internal combustion engine |
| 03/02/1993 | US5189997 Internal-combustion engine comprising a rocker lever valve gear |
| 02/24/1993 | EP0527970A1 Device for actuating the valves of a reciprocating piston engine |
| 02/23/1993 | US5188067 Adjustable valve system for an internal combustion engine |
| 02/18/1993 | WO1993003261A1 A cam device with a shape being deformable and/or removable by means of a fluid under pressure for varying the phasing of engine valves |
| 02/18/1993 | DE4222477A1 Cam mechanism for IC engine valve - has radially adjustable cam component to adjust amount of valve lift obtained |
| 02/16/1993 | US5186141 Engine brake timing control mechanism |
| 02/16/1993 | US5186128 For use in an engine |
| 02/09/1993 | US5184586 Mechanical compression release for an internal combustion engine |
| 02/02/1993 | US5183018 Master cylinder with two-piece master piston |
| 02/02/1993 | US5183015 Valve operating apparatus |
| 01/28/1993 | DE4133735C1 Valve gear for IC engine - has arm of varying effective length between bearing axis and cam contact surface |
| 01/28/1993 | DE4124305A1 Valve drive, esp. intake valve, for IC engine - has cams, positioned mirror-fashion on camshaft and levers, moved together in opposite direction by pressure medium |
| 01/27/1993 | EP0524314A1 Valve mechanism in internal combustion engine |
| 01/26/1993 | CA1313091C Valve operating apparatus for an internal combustion engine |
| 01/21/1993 | DE4124184A1 Hydraulic valve cup lifter - has axially adjustable sleeve co-axial with plunger and cup, and one or more bores lockable by cup |
| 01/14/1993 | DE4121435A1 Brake for multicylinder IC engine - has valves controllable periodically outside thrust stroke and hydraulic piston provided in area of valve drive |
| 01/12/1993 | US5178105 Valve gear for internal combustion engines |
| 01/07/1993 | EP0521412A1 Internal combustion engine with rocker lever valve drive |
| 12/30/1992 | EP0520801A1 Variable valve actuation control system |
| 12/16/1992 | EP0517887A1 Two-stroke engine with delayed cylinder scavenging |
| 12/10/1992 | DE4118287A1 IC engine valve timing gear - has mechanism which moves one arm only into operative and inoperative positions |
| 12/08/1992 | US5168848 Engine brake for a multi-cylinder internal combustion engine |
| 12/08/1992 | US5168772 Camshaft arrangement and method for producing it |
| 12/03/1992 | DE4117566A1 IC engine valve timing gear - has hydraulic valve play compensators between cam follower and each valve stem |
| 12/02/1992 | EP0515814A1 Internal combustion engine with an exhaust gas post-treatment device |
| 12/02/1992 | EP0515528A1 Cam mechanisms. |