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| Number | Title | Issue Date |
| 7819106 | Engine control apparatus using signal with level changing with engine operation In an apparatus for controlling an engine, an irregular-region start detector detects that a predetermined-directed level change in an input signal is synchronized with a start of appearance of an irregular region thereof. An irregular-region end detector detects th... | 10/26/2010 |
| 7309918 | Chip package structure This invention relates to a chip package structure comprising of a chip, multiple leads with inner and outer ends, an exposed chip upper surface, an encapsulated body encloses the peripherals of the chip, and multiple conducting wires used to connect electrically th... | 12/18/2007 |
| 7267105 | Optically triggered electronic distributor for an internal combustion engine A distributor for an internal combustion engine and associated methods comprise a camshaft having a drive gear thereon, a trigger disk positioned on the camshaft so as to rotate coaxially therewith, the trigger disk having a plurality of tabs defining a window betwe... | 09/11/2007 |
| 7116096 | Vehicle direction detection using tone ring A tone ring preferably for use in a braking system of a vehicle has a first pattern of excitation indicative of speed of rotation of the tone ring, and a second pattern of excitation including frequency variations that is indicative of direction of rotation of the t... | 10/03/2006 |
| 7040286 | Engine control system and method An engine control system for an internal combustion engine and a method of programming is provided. The engine control system has a rotation sensing system, an intelligent controller connected to the rotation sensing system for calculating at least one of a cylinder... | 05/09/2006 |
| 6907342 | Method and apparatus for detecting a crank angle in an engine An apparatus for identifying a cylinder to be ignited in an engine. A plurality of teeth are formed on the periphery of the engine crankshaft. A sensor having two spaced detector parts senses the passage of the teeth. The detector parts identify the passage of a lea... | 06/14/2005 |
| 6854455 | Rotation angle detector, injection system and corresponding operating method A rotation angle detector for detecting the angular position of a shaft, i.e. a camshaft or a camshaft of an internal combustion engine, includes a rotatable detector wheel coupled to the shaft. Markings of a first type are distributed along a periphery of the detec... | 02/15/2005 |
| 6847882 | Misfire detection system and method of median filtering A processor having an embedded median filter routine, a method of median filtering using a vehicle's CPU, and a misfire detection system for an internal combustion engine with crankshaft acceleration detection means for determining crankshaft acceleration values. In... | 01/25/2005 |
| 6827063 | Method and device for establishment of a signal pattern based on crank angle of internal combustion engine For the establishment of a crank-angle based signal pattern with high discrimination representing a relevant working characteristic of an internal combustion engine, the working characteristic is detected with high time discrimination and with the aid of a time-base... | 12/07/2004 |
| 6736102 | Method for operating an internal combustion engine and corresponding arrangement A method for operating an internal combustion engine and a corresponding device are described, in which reference pulses are generated synchronously with respect to the cyclical movement of at least one part of the internal combustion engine. At least one event mome... | 05/18/2004 |
| 6732713 | Crank angle detection apparatus Even if the engine is started from any crank angle position, it is possible to correctly determine the rotational direction of a crankshaft, so that fuel injection or ignition can be stopped when the crankshaft is rotating in the reverse direction. A measurement mem... | 05/11/2004 |
| 6668799 | Control method for ignition system A rotor has teeth on a rotor body. The teeth indicate fixed ignition timings for both of normal and reverse rotations. The teeth also indicate beginning positions of a calculation ignition sequence and an excess advanced ignition sequence for both of the ... | 12/30/2003 |
| 6665607 | Method and device for controlling an internal combustion engine A method and a device are described for controlling an internal combustion engine. A manipulated variable is specifiable on the basis of at least one measured quantity. The measured quantity is filterable by at least one filter. An excitation variable is ... | 12/16/2003 |
| 6606552 | Control device for final control elements of an internal combustion engine, control unit for actuator drives of an internal combustion engine and a method for controlling an internal combustion engine A control device for an internal combustion engine has a device for generating control commands for controlling final control elements in accordance with at least one measured value. The control device also has a communications interface for exchanging me... | 08/12/2003 |
| 6595192 | Ignition control device and method An ignition control device for controlling an ignition coil device for an internal combustion engine, having an angle measuring device for measuring the current crank angle of the internal combustion engine and for outputting an equidistant angle pulse si... | 07/22/2003 |
| 6591810 | Control system for internal combustion engine A control system for an internal combustion engine is provided which is capable of satisfying the demand of reducing the size, weight and cost thereof, and at the same time fulfilling sufficient timing accuracy for ignition timing without using a high per... | 07/15/2003 |
| 6577945 | Method and apparatus for detecting spark failure based on the number of crankshaft revolutions A novel method and a suitable device for the cylinder-specific determination of spark failures on a reciprocating engine through a classifying unit based on measurement data that contain information about the number of crankshaft revolutions. For this pro... | 06/10/2003 |
| 6553965 | Control system for internal combustion engine A control system for an internal combustion engine is provided which is capable of controlling ignition timing, fuel injection timing and a fuel injection amount in a stable manner at any time even in an engine, or in an operating range or in an operating... | 04/29/2003 |
| 6493628 | Engine control unit having frequency-multiplied signal generating function In an engine control unit, a crank signal is generated as a pulse train of every predetermined angle interval corresponding to rotation of a crankshaft of an engine. An edge time measuring counter receives the crank signal and measures an interval of puls... | 12/10/2002 |
| 6445176 | Self-adaptive sensor unit for determining pulse switching points A magnetically sensitive sensor for counting pulses for measuring rotational speeds and angular positions of a rotating component via a pulse transmitter connected for rotating with the rotating component automatically adapts its switching points to the r... | 09/03/2002 |
| 6405708 | Dual ignition system with timing offsets for opposed piston engine A dual ignition system for a truly opposed piston engine providing offsets from the standard timing separation, which is 1440 degrees divided by the number of pistons. Timing is obtained from a timing mark on the flywheel. An ignition transformer is provi... | 06/18/2002 |
| 6272428 | Method and system for engine ignition for timing controlled on a per cylinder basis An ignition system for energizing an ignition coil of an internal combustion engine. The system including a high voltage unit for energizing the ignition coil of the engine, a memory for storing system function indices and a processor. The processor recei... | 08/07/2001 |
| 6111413 | Digital degree wheel for testing ignition timing A digital degree wheel is provided including an engine sensor mounted to at least one of a camshaft, distributor and crankshaft of a vehicle for generating an activation signal after the detection of the rotation thereof. An ignition sensor connected to a... | 08/29/2000 |
| 6012427 | Internal combustion engine spark scheduling The present invention relates to apparatus for scheduling the ignition sparks for a spark ignition internal combustion engine. An ignition system for a spark ignition engine, includes a device for generating a series of pulses (12) upon each revolution of... | 01/11/2000 |
| 5992380 | Ignition timing control system for industrial engines An ignition timing control system for an industrial engine or small engines used on lawn mowers, etc. is provided. In such an industrial engine, a pulser coil outputs an alternating current signal in response to movement of a magnet which rotates together... | 11/30/1999 |
| 5711272 | Fuel property detection for an engine using engine speed A fuel property, i.e., ordinary fuel, heavy fuel or mixture of both, is determined using an engine rotations. After an engine temperature exceeds 0° C. and an engine attains a complete combustion, an engine speed is integrated. It is determined whether a... | 01/27/1998 |
| 5549091 | 4-cycle engine and magnetic sensor A four-cycle engine including a magnetic detection sensor mounted on a non-magnetic cam shaft pulley which is rotated in operative association with a crank pulley for detecting a plurality of detecting portions formed on the magnetic detection member by c... | 08/27/1996 |
| 5549090 | Electronic ignition system for combustion engines An electronic ignition system for a spark-ignition internal combustion engines which has a timing disk attached to the engine's shaft. The timing disk has peripherally located permanent magnets at desired locations which generates an output timing signal ... | 08/27/1996 |
| 5497748 | Device for recognising the angular position of a rotating part A device for recognizing the angular position of a rotating part is described in which the rotating part is a pick-up disc (14) provided with a multiplicity of regular angle marks (11) and a distinguishable reference mark (12), which is formed, for exampl... | 03/12/1996 |
| 5469824 | Electronic system for controlling timing signals in an internal combustion engine Electrical pulses are provided to the system as each piston of an automotive engine reaches its top dead center position during a compression stroke. The system measures and stores the time TP which is equivalent to the elapsed between a first and second ... | 11/28/1995 |
| 5467752 | Method and apparatus for controlling the fuel injection/ignition timing of internal combustion engines, and a crank angle sensor using same An ignition timing controller for an automobile in which at least two reference ignition point signals are established for each cylinder, and the ignition timing is set according to the reference ignition point signal that is closer to the target ignition... | 11/21/1995 |
| 5023794 | Method and apparatus for an internal combustion engine with learning closed-loop control An adaptation value memory is used for a learning control method having precontrol for an internal combustion engine and a corresponding apparatus. The adaptation value memory has a predetermined number of support points which are addressable via data rec... | 06/11/1991 |
| 5019988 | Method for generating trigger pulses In a method for generating trigger or ignition pulses that control a periodic event of an internal combustion engine, a precalculation is required of a calculated running time Tn+1 that a crank shaft of the internal combustion engine meets in o... | 05/28/1991 |
| 4979477 | Ignition circuit for a two-stroke engine The invention is directed to an ignition circuit for an internal combustion engine such as a two-stroke engine of a handheld, portable tool such as a motor-driven chain saw or the like. The engine has a cylinder and a piston conjointly defining a combusti... | 12/25/1990 |
| 4970668 | Crank angle sensor signal processor In a crank angle sensor signal processor including a microcomputer, the number of generated unit crank angle (1°) signals are counted and compared with a predetermined level. An interrupt demand signal is generated in response to a reference signal only ... | 11/13/1990 |
| 4960092 | Engine control system An engine control system comprises a crank angle sensor for generating reference signals, each outputted at a first predetermined rotational angle interval of the engine and position signals for controlling the ignition timing, an angle ignition signal ge... | 10/02/1990 |
| 4959996 | Control signal generator for an internal combustion engine A signal control generator for a multi-cylinder internal combustion engine has a position sensor which generates output pulses which indicate prescribed rotational angles of the crankshaft of the engine for each cylinder. The output pulse for a prescribed... | 10/02/1990 |
| 4841932 | Spark timing control A spark timing control for an electronic internal combustion engine ignition system that provides a constant spark advance regardless of engine speed. A series of crankshaft pulses are developed which occur at each 60 degrees of rotation of the crankshaft... | 06/27/1989 |
| 4787354 | Ignition control system for internal combustion engines with simplified crankshaft sensing and improved coil charging An electronic ignition system is disclosed for controlling as a function of at least one selected engine parameter the ignition or spark instants of an internal combustion engine having at least one cylinder with a piston and a rotatable crankshaft couple... | 11/29/1988 |
| 4722311 | Capacitor ignition apparatus Capacitor ignition apparatus for internal-combustion engines with a magneto generator and an ignition pulse generator for the switching through of an electronic switch which discharges the capacitor via the primary winding of the ignition coil, wherein th... | 02/02/1988 |
