| 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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| 05/03/1994 | CA1329139C Exhaust control valve for two-stroke cycle engines and process for using the same |
| 04/28/1994 | DE4236009A1 Combustion engine air-intake control during engine braking - involves adjustments of mixt. intake and exhaust to obtain max. engine braking as soon as road wheels are braked |
| 04/28/1994 | DE4236008A1 Adaptive lambda control for individual cylinders of IC engine - involves estimation of adaptation value from measured temp. and two values characteristic of adaptation temperature-dependence |
| 04/27/1994 | EP0594463A1 Spark ignited internal combustion engines |
| 04/27/1994 | EP0594462A1 Spark ignited internal combustion engines |
| 04/27/1994 | EP0593908A1 Engine brake with exhaust throttle |
| 04/20/1994 | EP0592565A1 Multicylinder two stroke cycle engine. |
| 04/12/1994 | US5301636 Valve operating mechanism of internal combustion engine |
| 04/05/1994 | US5299549 Method of controlling the fuel-air ratio of an internal combustion engine |
| 03/31/1994 | WO1994002714A3 Method and mechanism for gas distribution in four-stroke internal combustion engine with phase regulation |
| 03/31/1994 | DE4332616A1 Charging device for IC engine - comprises inlet air channel connected to engine via inlet valve and mechanical charger in it, with variable valve timing mechanism varying closure time point of inlet valve |
| 03/31/1994 | DE4332604A1 IC engine inlet device - comprises mechanical charger, number of cylinders to each of which are connected inlet valve and channel and exhaust valve and channel together with variable valve timing mechanism |
| 03/24/1994 | DE4331898A1 Speed-dependent cam- and lever-operated valve gear for engine - incorporates rocking-lever mechanisms raised and lowered hydraulically under stored-program control according to engine speed and load |
| 03/22/1994 | US5295416 Air-fuel ratio control method for internal combustion engines |
| 03/15/1994 | US5293741 Warming-up system for warming up an engine for an automotive vehicle |
| 03/03/1994 | WO1994004799A1 Regulating slide-valve gear |
| 03/03/1994 | DE4306509C1 Cam shaft adjusting method for IC engine - using pick=up to ascertain relative rotational torque w.r.t. crankshaft and derive instantaneous actual position |
| 03/02/1994 | EP0382776B1 Exhaust control valve for two-stroke cycle engines and process for using the same |
| 03/01/1994 | USRE34553 Vale operating apparatus for an internal combustion engine |
| 03/01/1994 | US5289805 Self-calibrating variable camshaft timing system |
| 02/23/1994 | EP0583583A2 Internal combustion engine for vehicle |
| 02/22/1994 | CA1327152C Irregularity-detecting method for variable valve-timing type engine |
| 02/22/1994 | CA1327151C Control method for valve-timing changeover in engine |
| 02/16/1994 | EP0582719A1 Control device for an engine having variable suction and exhaust valve mechanism and controlling method therefor |
| 02/16/1994 | EP0409996B1 Electromagnetic valve actuating system |
| 02/16/1994 | EP0406443B1 Electromagnetic valve actuator |
| 02/16/1994 | CN1082143A Method and apparatus to improve engine response transient |
| 02/16/1994 | CN1081976A Engine braking utilizing unit valve actuation |
| 02/09/1994 | EP0582430A1 System and method to determine cam phase and cylinder identification for a variable cam timing engine |
| 02/08/1994 | US5284116 Vehicle management computer |
| 02/08/1994 | CA2040294C Sohc type internal combustion engine |
| 02/08/1994 | CA1326796C Valve operation control device for internal combustion engine |
| 02/03/1994 | WO1994002715A1 Electro-hydraulic adjusting device |
| 02/03/1994 | WO1994002714A2 Method and mechanism for gas distribution in four-stroke internal combustion engine with phase regulation |
| 02/03/1994 | DE4309627A1 Supercharged IC engine with charge air cooler - has geometrical compression engine ratio controlled to be at least 8.5 |
| 02/02/1994 | EP0581508A2 Multiple functions cam sensing |
| 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 |
| 01/27/1994 | DE4224653A1 Elektrohydraulische Stelleinrichtung Electro-hydraulic actuating device |
| 01/25/1994 | US5280770 Variable valve actuation control system |
| 01/19/1994 | EP0579590A1 Two stroke internal combustion engine |
| 01/18/1994 | CA1326181C Control method for valve-timing changeover in engine |
| 01/13/1994 | DE4222533A1 Vehicle IC engine control system - operates engine under full torque conditions with control for optimum gear ratio and optimum fuel consumption. |
| 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 | EP0577485A1 Probe for controlling an internal combustion engine |
| 12/29/1993 | CN1080024A Method and apparatus for optimizing breathing utilizing unit valve actuation |
| 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 |
| 12/21/1993 | US5271360 Valve opening and closing timing control apparatus |
| 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 | EP0573662A1 Engine for automobile |
| 12/15/1993 | CN1079533A Method and apparatus to reduce engine combustion noise utilizing unit valve actuation |
| 12/09/1993 | WO1993024749A1 Method and apparatus to reduce engine combustion noise utilizing unit valve actuation |
| 12/09/1993 | WO1993024741A1 A method and apparatus for starting an engine utilizing unit valve actuation |
| 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 |
| 12/09/1993 | 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 |
| 11/16/1993 | US5261370 Control system for internal combustion engines |
| 11/11/1993 | WO1993022549A1 Feeding method for compression ignition internal combustion engines |
| 11/11/1993 | CA2110803A1 Induction method for a compression-ignition internal combustion engine |
| 11/10/1993 | EP0568867A1 Engine brake timing control mechanism |
| 11/09/1993 | US5259357 Ignition system for internal combustion engine |
| 11/09/1993 | CA1324041C Method and apparatus for continuous camlobe phasing |
| 11/05/1993 | CA2095186A1 Engine brake timing control mechanism |
| 11/04/1993 | DE4313465A1 Intake tube arrangement for IC engine - has hollow rotary drum slide with machine-fastened housing as auxiliary control device |
| 11/03/1993 | EP0568214A1 Internal combustion engine with adaptive control of compression ratio |
| 10/26/1993 | US5255654 Device to reduce gas exchange losses of an internal combustion engine |
| 10/26/1993 | US5255650 Engine braking utilizing unit valve actuation |
| 10/26/1993 | US5255637 Internal combustion engine with adaptive control of compression ratio |
| 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 |
| 10/14/1993 | WO1993020345A1 Control system for an internal combustion engine |
| 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 | CA2130914A1 Control system for an internal combustion engine |
| 10/12/1993 | US5251590 Method and apparatus for starting an engine utilizing unit valve actuation |
| 10/12/1993 | US5251584 Two cycle engine |
| 10/12/1993 | US5251583 Intake apparatus for two cycle engine |
| 09/30/1993 | WO1993014303A3 Engine intake valve selective deactivation system and method |
| 09/22/1993 | CN1076509A Piperazine derivatives |
| 09/21/1993 | US5245968 System to determine cam phase and cylinder identification for a variable cam timing engine |
| 09/15/1993 | EP0560476A1 Variable valve timing operated engine |
| 09/14/1993 | US5243935 Valve opening and closing timing control apparatus |
| 09/08/1993 | EP0559098A2 Engine control system and method |
| 09/08/1993 | EP0558585A1 Internal combustion engine with compressor function. |
| 09/07/1993 | US5241943 Air-fuel ratio control method for internal combustion engines |
| 09/02/1993 | WO1993017230A1 Control device for an engine having variable suction and exhaust valve mechanism and controlling method therefor |
| 09/01/1993 | EP0458857B1 A method and a device for engine braking a four stroke internal combustion engine |
| 08/31/1993 | US5239963 Ignition timing control system for internal combustion engines |
| 08/31/1993 | US5239960 Engine induction system provided with a mechanical supercharger |
| 08/19/1993 | WO1993016276A1 Method of operating an automotive type internal combustion engine |
| 08/18/1993 | EP0555816A2 Idle control system and method for modulated displacement type engine |
| 08/17/1993 | US5236332 Method of controlling an internal combustion engine |
| 08/10/1993 | US5233948 Variable cycle engine |
| 08/10/1993 | US5233831 Exhaust control system for internal combustion engine |
| 08/08/1993 | CA2088698A1 Method of operating an automotive type internal combustion engine |
| 07/28/1993 | EP0552596A1 Push rods for pistons in compression release engine retarders |
| 07/27/1993 | US5230320 Intake and exhaust control system for automobile engine |
| 07/22/1993 | WO1993014303A2 Engine intake valve selective deactivation system and method |
| 07/21/1993 | EP0551339A1 Improvements in or relating to driving connections between two rotatable bodies. |