| Patents for F02P 17 - Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines (2,871) |
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| 11/05/1991 | US5063287 Processing circuit for optical combustion monitor |
| 10/22/1991 | US5058551 System for identifying misfire cylinder in internal combustion engine |
| 10/17/1991 | WO1991015678A1 Device for generating a trigger signal from ignition pulses in an ignition system |
| 10/17/1991 | DE4011521A1 Function monitoring circuit for automobile ignition system - allows fuel injection valves to be switched out upon loss of function signal |
| 10/10/1991 | DE4010839A1 Vorrichtung zur erzeugung eines triggersignals aus zuendimpulsen einer zuendanlage An apparatus for generating a trigger signal from ignition pulses of an ignition system |
| 10/08/1991 | US5055772 High voltage ignition system monitor for spark initiated internal combustion engines |
| 10/08/1991 | US5054461 Ionization control for automotive ignition system |
| 10/01/1991 | US5052358 Cylinder recognition apparatus for an internal combustion engine |
| 09/17/1991 | US5049786 High energy ignitor power circuit |
| 09/10/1991 | US5046470 Method of and device for monitoring combustion in a spark ignition internal combustion engine |
| 09/03/1991 | US5045796 Apparatus for recognizing missing or poor firings in otto engines |
| 08/21/1991 | EP0442687A2 Method of and apparatus for detecting misfire |
| 08/15/1991 | CA2036244A1 Method of and apparatus for detecting misfire |
| 08/14/1991 | EP0441603A2 Misfire detection |
| 08/14/1991 | EP0440894A2 Trigger circuit with self-adjusting reference value |
| 07/31/1991 | EP0438429A1 Process and device for recognizing spark failures. |
| 07/23/1991 | US5034893 Graphical display of timing advance data |
| 07/23/1991 | US5033434 Method of controlling an internal combustion engine |
| 07/09/1991 | US5029567 Internal combustion engine ignition system and cleaning device |
| 06/25/1991 | US5027073 High voltage ignition system monitoring circuit |
| 06/19/1991 | EP0432176A1 Electronic engine control with performance check for the final ignition stage |
| 06/11/1991 | US5022370 Internal combustion engine |
| 05/29/1991 | DE4037071A1 Transistorised ignition system quality testing of combustion engines - using counter of clock pulses through gate opened by threshold comparator or switching transistor collector voltage |
| 05/28/1991 | US5019779 Ignition apparatus for an internal combustion engine |
| 05/21/1991 | US5017874 Method and apparatus for detecting and indicating anomalies in the operation of the ignition systems of internal combustion engines |
| 05/02/1991 | EP0424917A2 System for identifying misfire cylinder in internal combustion engine |
| 04/18/1991 | DE3934338A1 Recognition of ignition mistiming in four-stroke engine - relies on temporary alteration of parameters with monitoring of consequential effect on engine speed or knock |
| 04/18/1991 | DE3933383A1 Positioning crankshaft reference markings - by pulse train generated from gear crown of flywheel and sensor |
| 04/16/1991 | US5008771 Diagnostic circuit for units providing current control and protection against excessive heat dissipation for semiconductor power devices |
| 04/11/1991 | DE4030433A1 Cylinder recognition device for multi-cylinder IC engine - uses opto-electronic coupler to detect phase of rotation of disc corresp. to transmission of second pulse |
| 04/09/1991 | US5005547 Abnormal combustion-detecting device and combustion control device for internal combustion engines |
| 04/02/1991 | US5004984 Inductive |
| 04/02/1991 | CA1282453C Voltage regenerator for ignition systems of internal combustion engines |
| 03/19/1991 | US5001432 Ignition test probe |
| 03/19/1991 | US5001431 Internal combustion engine |
| 03/13/1991 | EP0416225A2 Magnetic field pickup for automotive ignition diagnostics |
| 03/08/1991 | CA2018601A1 Magnetic field pickup for automotive ignition diagnostics |
| 02/21/1991 | WO1991002153A1 Fully electronic ignition device for an internal combustion engine |
| 02/19/1991 | US4993371 Internal combustion engine ignition system and cleaning device |
| 02/12/1991 | US4992836 Device for controlling the electrical supply to a load, in a "smart" power integrated circuit |
| 02/12/1991 | US4991554 Device for controlling ignition timing of engine |
| 01/29/1991 | US4987771 Misfire detection device for an internal combustion engine |
| 01/23/1991 | EP0408916A2 Installation for detecting a misfire or incomplete combustion in a combustion engine |
| 01/22/1991 | US4986232 Arrangement for recognizing misfirings in internal combustion engines with externally controlled ignition |
| 01/16/1991 | EP0407520A1 Luminosity detector for internal combustion engine |
| 01/15/1991 | US4984454 Engine testing system |
| 01/02/1991 | EP0404763A1 Cylinder recognition apparatus for a distributorless ignition system. |
| 12/25/1990 | US4980845 Digital engine analyzer |
| 12/05/1990 | EP0400909A2 Processing circuit for optical combustion monitor |
| 12/04/1990 | US4975847 Diagnosis system for a motor vehicle |
| 12/04/1990 | US4975846 Diagnosis system for a motor vehicle |
| 11/29/1990 | WO1990014705A1 Sensor for determining the combustion profile in an internal combustion engine |
| 11/20/1990 | US4971010 Method and apparatus for misfiring detection and control in an internal combustion engine |
| 11/13/1990 | US4969443 Open secondary detection via reverse circuit sensing |
| 11/13/1990 | CA1276308C2 Digital engine analyzer |
| 10/31/1990 | EP0394234A1 Method of detecting knocking in internal combustion engines. |
| 10/25/1990 | DE4018705A1 Analyser for ignition system of vehicle internal combustion engine - has near field inductive detector probe in housing, self-adapting amplifier and microcontroller |
| 10/23/1990 | US4964388 Method and device for regulating a controlled ignition engine from the statistic distribution of an angular divergence |
| 10/03/1990 | EP0390314A2 Ignition timing system with feedback correction |
| 10/03/1990 | EP0389775A2 Watch circuit of the high voltage in an ignition device |
| 10/02/1990 | US4960093 Internal combustion engine ignition system and cleaning device |
| 10/02/1990 | US4959996 Control signal generator for an internal combustion engine |
| 09/19/1990 | EP0388132A1 Thermal utilization system using hydrogen absorbing alloys |
| 09/19/1990 | EP0388063A1 Method of controlling an internal combustion engine |
| 09/19/1990 | EP0387254A1 Engine misfire detection and engine exhaust systems |
| 09/12/1990 | EP0386431A2 Measurement circuitry for the primary voltage of an ignition coil |
| 08/29/1990 | EP0384436A2 Ignition detecting device of ignition apparatus |
| 08/28/1990 | US4951639 Rotational position detector device for an internal combustion engine |
| 08/23/1990 | DE4004400A1 Circuit for monitoring function of glow plugs of diesel engine - uses auxiliary evaluation circuit-monitor plugs concerning short circuit and min. current |
| 08/21/1990 | US4950996 Method of and apparatus for adjusting ignition timing by rotating the crankshaft with the coil and spark plug terminals disconnected from the ignition circuit |
| 08/14/1990 | US4947810 Method and arrangement for improving the starting ability of an internal combustion engine, when an attempt to start the engine has failed |
| 08/09/1990 | WO1990008894A1 Processes for assigning ignition signals to a reference cylinder |
| 08/02/1990 | DE4001362A1 IC engine ignition timing monitoring system |
| 07/17/1990 | US4942362 Apparatus for testing ignition systems |
| 07/12/1990 | WO1990007645A1 A method of monitoring machine vibrations |
| 06/26/1990 | US4937527 Lead assembly for a distributorless ignition interface |
| 06/20/1990 | EP0373694A1 Diagnostic circuit for units providing current control and protection against excessive heat dissipation for semiconductor power devices |
| 06/14/1990 | WO1990006499A1 Luminosity and temperature detector for internal combustion engine |
| 06/13/1990 | DE3841739A1 Device for detecting ignition signals |
| 06/13/1990 | CA2005184A1 Diagnostic circuit for units providing current control and protection against excessive heat dissipation for semiconductor power devices |
| 06/12/1990 | US4932381 Device and process of verification of the wiring of the ignition performance module |
| 06/05/1990 | US4930481 Engine control apparatus |
| 05/23/1990 | EP0369236A2 Apparatus and method for providing ignition to a turbine engine |
| 05/22/1990 | US4928228 Apparatus for detecting misfire and for controlling fuel injection |
| 05/22/1990 | US4926822 Control system for an automotive engine |
| 05/15/1990 | US4924830 Cylinder discriminating system for an automotive engine |
| 05/15/1990 | CA1269168A1 Digital engine analyzer |
| 04/25/1990 | EP0364460A1 Observation of combustion in a spark ignition internal combustion engine. |
| 04/24/1990 | US4919106 Ignition distributor for an internal combustion engine |
| 04/24/1990 | US4918980 Diesel engine timing apparatus and method |
| 04/19/1990 | WO1990004093A1 Process and device for recognizing spark failures |
| 04/17/1990 | US4918389 Detecting misfiring in spark ignition engines |
| 04/17/1990 | US4917064 Method of and apparatus for generating cylinder discriminating signal in distributor for internal combustion engine |
| 04/10/1990 | US4915086 Variable-energy-spark ignition system for internal combustion engines, particularly for motor vehicles |
| 04/03/1990 | US4913123 Ignition timing system with feedback correction |
| 03/22/1990 | WO1990002874A1 Engine misfire detection and engine exhaust systems |
| 03/22/1990 | WO1990002873A1 Electronic engine control with performance check for the final ignition stage |
| 03/07/1990 | EP0356436A1 Arrangement for determining the ignition angle in combustion engines |
| 03/06/1990 | US4905648 Ignition timing control appartaus for an internal combustion engine |
| 02/27/1990 | US4903676 Method and arrangement for improving the starting ability of an internal combustion engine during an engine start |