| 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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| 03/03/1994 | DE4244711A1 Valve drive for charge change valves of IC piston engine - has annular closure centrally sliding in central tappet, w.r.t. to tappet axis. |
| 03/03/1994 | DE4230809A1 Control for several, simultaneously actuatable valves in group - has yoke-shape transverse secured to valves or their stems, with single cam for valve group. |
| 03/03/1994 | DE4229186A1 IC engine valve group control with common cam - which has non-effective face offset w.r.t. effective region of cam face |
| 03/03/1994 | DE4228901A1 Variable control for IC engine valves - has axially slidable camshaft with conical cams and includes tilting lever with rotary parts. |
| 03/02/1994 | EP0584575A1 Internal combustion engine having a mechanism for switching from one operating mode to another. |
| 03/01/1994 | US5289806 Combustion engine with at least one camshaft which can be shifted axially |
| 02/24/1994 | DE4226798A1 Stroke-piston IC engine with two gas exchange valves per cylinder |
| 02/23/1994 | EP0583583A2 Internal combustion engine for vehicle |
| 02/22/1994 | US5287830 For an internal combustion engine |
| 02/22/1994 | CA1327151C Control method for valve-timing changeover in engine |
| 02/17/1994 | WO1994003709A1 Engine valve cut-off via cam roller displacement |
| 02/17/1994 | DE4226503A1 Valve gear for IC engine - has hydraulically operated coupling between cams and camshaft for some valves of valve gear. |
| 02/16/1994 | EP0582846A1 Internal combustion piston engine with gas exchange valves per cylinder |
| 02/16/1994 | EP0504223B1 Valve arrangement |
| 02/16/1994 | CN1081976A Engine braking utilizing unit valve actuation |
| 02/10/1994 | DE4226163A1 Motorventilabschaltung mittels Nockenrollenverlagerung Engine valve shut-off using cam roller displacement |
| 02/08/1994 | CA2040294C Sohc type internal combustion engine |
| 02/08/1994 | CA1326796C Valve operation control device for internal combustion engine |
| 02/03/1994 | WO1994002713A1 Valve-actuating mechanism |
| 02/03/1994 | DE4225797A1 Hydraulic tappet for IC engine - uses alternately charged pressure chambers connected by closable channels |
| 02/03/1994 | DE4225796A1 Drive for inlet valves of combustion engine |
| 02/01/1994 | US5282443 Valve operating system in internal combustion engine |
| 02/01/1994 | CA1326618C Cylinder head structure for multiple cylinder engines |
| 01/27/1994 | DE4321979A1 Controller of inlet valve of IC engine - facilitates restarting by movement of engine in appropriate direction for optimal camshaft angle and rocker arm ratio settings |
| 01/26/1994 | EP0579902A1 Automatic variator of valve overlap and valve section |
| 01/25/1994 | US5280776 Engine having fuel preheater |
| 01/20/1994 | DE4223475A1 Ventilbetätigungsmechanismus A valve operating mechanism |
| 01/20/1994 | DE4223173A1 Valve mechanism for vehicle IC engine - has different lift curves for each pair of valves per cylinder controlled by roller-actuated eccentrics |
| 01/19/1994 | EP0579592A1 Internal combustion engine comprising a camshaft with axial moving device |
| 01/19/1994 | EP0579590A1 Two stroke internal combustion engine |
| 01/18/1994 | US5279211 Mechanically retained wear-resistant ceramic pad |
| 01/18/1994 | CA1326184C Valve operating system of internal combustion engine |
| 01/18/1994 | CA1326181C Control method for valve-timing changeover in engine |
| 01/12/1994 | CN1080691A A method and apparatus for starting an engine utilizing unit valve actuation |
| 01/06/1994 | WO1994000679A1 A method for controlling the working cycle in an internal combustion engine and an engine for performing said method |
| 01/05/1994 | EP0576768A1 Valve driving system for multicylinder internal combustion engine |
| 01/05/1994 | DE4221394A1 Decompression device for IC engine - has disk on camshaft controlling tappet path and centrifugal weight characteristic |
| 01/05/1994 | DE4221097A1 Valve control for IC engine - has cam follower with adjustable length to ensure constant valve opening stroke. |
| 01/05/1994 | DE4220816A1 Adjustable valve control for IC engine - has adjustable intermediate member between cam and pivot lever along guide path |
| 01/04/1994 | US5275138 Variable valve timing system in an engine having two cam-shafts |
| 01/04/1994 | US5275137 Valve operating system for engine |
| 12/29/1993 | CN1080024A Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 12/28/1993 | US5273013 Device for controlling an outlet valve in the engine brake mode |
| 12/28/1993 | US5273006 Deactivatable valve control arrangement for internal combustion engines |
| 12/28/1993 | CA1325563C Intake device for an internal combustion engine |
| 12/23/1993 | WO1993025808A1 Internal combustion engine for portable power generating equipment |
| 12/23/1993 | WO1993025803A1 Method and device for motor-braking by means of a multi-cylinder internal combustion engine |
| 12/23/1993 | DE4219061A1 Cyclic control for vehicle IC engine brake system - incorporates additional cams, to advance exhaust valve timing |
| 12/22/1993 | EP0574867A1 A device for operating a valve in an internal combustion engine |
| 12/21/1993 | CA1325364C Valve operation control system of internal combustion engine |
| 12/16/1993 | DE4318293A1 Drag lever for IC engine poppet valve - combines two pistons longitudinally displaceable between lever and working chamber |
| 12/16/1993 | DE4219435A1 Switching-off system for IC engine valve - uses bolt with stop insertable via opening in cup tappet |
| 12/14/1993 | US5269267 Mechanism for controlling valve timing |
| 12/09/1993 | WO1993024741A1 A method and apparatus for starting an engine utilizing unit valve actuation |
| 12/09/1993 | WO1993024739A1 Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 12/09/1993 | WO1993024738A1 Engine braking utilizing unit valve actuation |
| 12/09/1993 | DE4317607A1 Variable valve drive for poppet valve in vehicle IC engine - uses working chamber in cup tappet controlled by throttle opening as valve moves position |
| 11/24/1993 | EP0570963A1 A valve control system for a variable-timing internal combustion engine, particularly for an engine with several valves per cylinder |
| 11/18/1993 | EP0354926B1 Variable timing system for engine valve operating gear |
| 11/18/1993 | DE4215719A1 Hydraulic control device for injection timing variation - has hydraulic closure dependent upon cam RPM between tappet plunger and roller tappet body |
| 11/18/1993 | DE4215665A1 Fuel injection pump for IC engine - has non-return valve, which is opened dependent upon engine temperature by expansion element |
| 11/18/1993 | DE4215151A1 Variable lift valve control system for IC engine - uses pusher inside tappet linked to toggle lever rod mechanism |
| 11/11/1993 | WO1993022585A1 Mechanically retained wear-resistant ceramic pad |
| 11/11/1993 | WO1993022543A1 Drive for gas exchange valves, preferably inlet valves of reciprocating internal combustion engines |
| 11/11/1993 | DE4313464A1 Camshaft arrangement with at least one de-activatable cam - involves cam being selectively coupled to or freed from camshaft by radially displaceable coupling bolt |
| 11/11/1993 | DE4215057A1 Camshaft for variable control of gas exchange valve in IC engine - has at least two parts with at least one cam divided along rotary axis and having run-in and run-out ramps |
| 11/11/1993 | DE4215053A1 Valve operation for at least two gas exchange valves in IC engine - involves at least one camshaft with normal valve control for exhaust valve with cam and closure spring and force control for inlet valve |
| 11/11/1993 | DE4215052A1 Desmodromic control of at least one gas exchange valve - works in engine with two camshafts each with opening and closure cams which commonly act on opening and closing levers |
| 11/10/1993 | EP0568867A1 Engine brake timing control mechanism |
| 11/09/1993 | CA1324041C Method and apparatus for continuous camlobe phasing |
| 11/05/1993 | CA2095186A1 Engine brake timing control mechanism |
| 11/04/1993 | DE4301835C1 Engine brake for diesel IC engine - has operating device with hydraulic piston for decompression in area of TDC with hydraulic piston control line in chamber enclosed by cylinder head and cylinder head hood |
| 11/03/1993 | EP0567552A1 A dual mode, phase shifting, cam engine |
| 11/02/1993 | US5257605 Engine brake for a multicylinder internal combustion engine |
| 10/28/1993 | WO1993021437A1 Engine having valve stroke adjuster and fuel preheater |
| 10/28/1993 | WO1993021427A1 Valve actuating mechanism for an internal combustion engine |
| 10/28/1993 | DE4213856A1 Valve drive for gas exchange valves in IC engines - has two tappets, which are coupled and uncoupled in cam base circle area |
| 10/28/1993 | DE4213855A1 Valve drive for intake valves of IC engine - has hydraulic tolerance compensation device between stroke transmission element and valve |
| 10/26/1993 | US5255650 Engine braking utilizing unit valve actuation |
| 10/26/1993 | US5255639 Integral EVT/cylinder head assembly with self-purging fluid flow |
| 10/26/1993 | CA1323534C Mechanical compression release system |
| 10/21/1993 | DE4312205A1 Supercharged IC engine control appts. - has shorter valve overlap and later intake valve closing for lower engine speeds than high ones |
| 10/21/1993 | DE4212844A1 Ventilbetätigungsmechanismus für eine Brennkraftmaschine A valve operating mechanism for an internal combustion engine |
| 10/19/1993 | US5253622 Cam phase change mechanism |
| 10/19/1993 | US5253621 Valve control means |
| 10/19/1993 | US5253620 Internal combustion engine adjustable valve gear |
| 10/19/1993 | US5253546 Variable valve actuating apparatus |
| 10/14/1993 | WO1993020337A1 Lost motion actuator |
| 10/14/1993 | DE4312085A1 Control system for supercharged fuel-injected IC engine - has variable valve overlap, e.g. being longer for low speed and high load than for other regimes |
| 10/14/1993 | DE4211632A1 Valve timing gear in IC engine - has transmission element with device for preset stroke adjustment of lifting valve |
| 10/12/1993 | US5251590 Method and apparatus for starting an engine utilizing unit valve actuation |
| 10/06/1993 | EP0563715A2 Oxyalkynes, pharmaceutical compositions containing same as well as a process for the preparation of these compounds and pharmaceutical compositions |
| 10/06/1993 | EP0563574A2 Valve-moving apparatus for internal combustion engine |
| 09/30/1993 | DE4210254A1 Variable inlet valve path for IC engine - has height adjusting valve lever axis operated via piston and rod with electro-hydraulic control |
| 09/29/1993 | EP0562561A1 Valve moving apparatus for internal combustion engine and method therefor |
| 09/29/1993 | EP0562286A1 Exhaust valve control device for engine braking |
| 09/29/1993 | EP0441909B1 Valve control device with magnetic valve for internal combustion engines |
| 09/28/1993 | US5247913 Variable valve for internal combustion engine |
| 09/16/1993 | WO1993018284A1 Cylinder head for an internal combustion engine |
| 09/16/1993 | DE4207494A1 Camshaft for IC engine allowing cutting out of valve - incorporates eccentric sleeve mounted on camshaft to support cam. |