Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 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 |
| 7222593 | Adjusting device for a camshaft An adjusting device for the rotational position of the camshaft of a reciprocating piston engine relative to the crankshaft, has an actuator for adjusting the rotational position that is connected into a control circuit. The control circuit has a controller, which i... | 05/29/2007 |
| 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 |
| 6823842 | Method and system for reducing engine spark knock during rapid transient A method for controlling spark timing. A plurality of tables provides borderline timing data contributors for each of a corresponding one of a plurality of different engine operating conditions. The contributors in each table are a function of engine speed and air c... | 11/30/2004 |
| 6766242 | Engine control apparatus An engine control apparatus receives a rotation signal composed of a train of pulses at every interval of a predetermined angle and having a reference position intermediate of the pulse train. A microcomputer in the apparatus executes a detection of the reference po... | 07/20/2004 |
| 6688283 | Engine start strategy The strategy controls operation of an internal combustion engine in the time period before an oxygen sensor is warmed up sufficiently to provide reliable feedback measurements. It involves using a target speed-time (or event) goal, and then applying feedb... | 02/10/2004 |
| 6374801 | Ignition control device and method An ignition controller has a revolution rate detector, a crankshaft angle detector, a computer, a first read/write memory device for the computed ignition angles for all cylinders, an ignition cycle overlap detector, a FIFO memory for storing a computed i... | 04/23/2002 |
| 6325047 | Control apparatus for internal combustion engine To exactly obtain a volumetric efficiency or ignition timing corresponding to a shift amount in rotational angle or phase of a camshaft relative to a crank shaft operably connected therewith even if the opening/closing timing of an exhaust valve and an in... | 12/04/2001 |
| 6253143 | Safety limiter for powered vehicles A vehicle control unit is disclosed which can be coupled between a tachometer sensor and an electronic ignition system on a vehicle. The unit is also coupled to a speedometer sensor to measure the vehicle's speed. The vehicle control unit limits the vehic... | 06/26/2001 |
| 6247448 | Closed loop spark control method and system utilizing a combustion event sensor to determine borderline knock A method and system to determine the borderline spark timing for a given speed and load of a given cylinder and control spark timing relative to that borderline spark timing to maintain the torque/efficiency of the engine. The system measures combustion r... | 06/19/2001 |
| 6006155 | Real-time misfire detection for automobile engines with medium data rate crankshaft sampling A method and system for detecting engine misfire in an internal combustion engine. A data signal containing a plurality of groups of data points generated from sampling crankshaft rotational displacement over three pre-determined angular sampling windows;... | 12/21/1999 |
| 5715792 | Method for controlling the advance angle of a power engine Provided is a method for controlling an advance angle of a power engine which can associate the rotational speed or be rotational period with the advance time period by using a single small look up table in a simple manner, and can be implemented by using... | 02/10/1998 |
| 5558062 | Integrated small engine control Small engine control is provided in which a manual selection of an engine operating level, such as from a positioning of a movable selector between a discrete number of selection settings is used to reference open-loop fuel, air, and ignition timing comma... | 09/24/1996 |
| 5505175 | Ignition system for internal combustion engine An alternating current based ignition system, in which a computer, in which a motorspecific data recognition field ("look-up" table) is stored and which is provided by sensors with operating parameters, controls the duration of the alternating ignition cu... | 04/09/1996 |
| 5422811 | Engine ignition timing control system and method An ignition timing control system and method for multicylinder internal combustion engine, utilizing a variable valve operating system such as variable valve timing system and a partial cylinder operating system. An engine control unit calculates a standa... | 06/06/1995 |
| 5277161 | Engine controller An engine controller comprises a detector for detecting whether a throttle valve has closed an intake passage, a determination device for determining whether the engine is in an idling condition, when a predetermined delay period (tKLLDLY) has elapsed fro... | 01/11/1994 |
| 5144560 | Control method for an internal combustion engine and apparatus therefor An engine control apparatus for shifting an ignition timing signal to an ignition coil (48) so that the engine produces optimum torque generates a pseudo random signal (26) which is preferably an M series signal and applies the pseudo random signal to a p... | 09/01/1992 |
| 4899280 | Adaptive system for controlling an engine according to conditions categorized by driver's intent An adaptive control system for categorized engine conditions is disclosed in which the engine conditions to be controlled are discriminated and classified in accordance with the driver's intent and the vehicle operating conditions. It is decided that a gi... | 02/06/1990 |
| 4807137 | Arrangement for the generation of a trigger pulse An arrangement for the generation of a trigger pulse for the ignition of an internal combustion engine. Crankshaft angle pulses representative of the rotational angle of the crankshaft are generated. The technical problem is an increase of the correction ... | 02/21/1989 |
| 4794900 | Ignition system for an internal combustion engine An ignition system for an internal combustion engine with the following structure: a pulse generator generates synchronously with the crankshaft rotation angle pulses and one reference pulse; within a first angle interval of the crankshaft rotation, for t... | 01/03/1989 |
| 4452204 | Spark timing control device for an internal combustion engine A spark timing control device for an internal combustion engine includes a memory storing plural signals representing first and second sets of time durations beginning with reference positions and extending to sparking as a function of engine speed and lo... | 06/05/1984 |
| 4292941 | Electronic ignition control systems There are provided a counter, a memory device which stores a combustion delay information, that is an information regarding the time delay between ignition initiation and combustion, and a processor. In response to a clock pulse the counter measures the i... | 10/06/1981 |
| 4262644 | Spark timing control circuit for controlling the timing of spark ignition of an internal combustion engine A spark timing control circuit for an internal combustion engine, includes a speed band selector circuit which responds to an electrical signal indicative of engine speed and provides an output signal indicative of which of a plurality of speed bands is o... | 04/21/1981 |
| 4258684 | Digital ignition timing controller A digital electronic spark timing control for an internal combustion engine. Independent parameters such as engine speed and manifold pressure are measured and encoded as multibit digital words. A digital memory stores spark advance angle as a function of... | 03/31/1981 |
| 4210111 | Electronic ignition control method and apparatus An electronic ignition control apparatus for an engine comprises a reference signal generator to produce a reference signal corresponding to the top dead center position of a piston, a first sensor to produce a first output signal indicative of the amount... | 07/01/1980 |
| 4207847 | Electronic ignition control apparatus In an electronic ignition control apparatus for an engine, an actual optimum spark advance angle for activation of a spark plug is determined as a value defined by a linear equation representing a relationship between an optimum spark advance angle and an... | 06/17/1980 |
| 4196705 | Electronic ignition control method and apparatus In an electronic ignition control apparatus for a combustion engine, a first memory is provided to store a data indicating a first parameter in relation to rotation speed of the engine to read out a value of the first parameter in accordance with an insta... | 04/08/1980 |
| 4174688 | Digital-electronic engine ignition system The engine for which the system provides ignition control produces a basic signal giving the time lapse of a predetermined angle of crankshaft rotation. Leading and trailing edges of this basic signal produce control signals. During the interval between t... | 11/20/1979 |
| 4168682 | Electronic ignition timing system using digital rate multiplication An electronic ignition timing system for an internal combustion engine which rotates a crankshaft is disclosed. The ignition system comprises a plurality of variable engine condition sensors which produce corresponding analog output signals and a cranksha... | 09/25/1979 |
| 4142483 | Operation timing control system for an internal combustion engine An internal combustion engine operation timing control uses a programmed read only memory to produce a multibit digital signal used to determine the instant of operation. There are two inputs to the ROM, one of which is from a speed counter and the other ... | 03/06/1979 |
| 4133323 | Control trigger generating system, particularly to generate a trigger signal used in internal combustion engines, such as an ignition or fuel injection trigger signal To simplify electronic fuel injection or ignition signal generation, a transducer is provided which is formed as a segmental element providing a first or starting pulse at a certain angular position of the crankshaft of the engine and a second or terminat... | 01/09/1979 |
| 4127091 | Internal combustion engine ignition electronic control device and method Device for electronically controlling the ignition of an internal combustion engine comprising a sequencer coupled through a first output to one input of a first binary rate multiplier coupled in turn through a series of parallel-connected inputs to a pre... | 11/28/1978 |
| 4119069 | Electronic ignition with angular transcoder A time base generator is adapted to deliver a first and a second clock signal whose frequencies are fixed and in a ratio equal to a predetermined multiple. A forward counter counts the number of pulses of the second clock signal produced between two succe... | 10/10/1978 |
| 4114573 | Electronic ignition timing control device for internal combustion engines An up-counter counts pulses of a first pulse train of a variable frequency during each pulse-duration of pulses generated corresponding to the angular position of a crankshaft of an engine. The so counted value is transferred to a down-counter which count... | 09/19/1978 |
| 4112887 | Automatic spark timing device A digital control device for an internal combustion engine ignition system includes a shaft angle digital encoder, a shaft speed digital encoder, a matrix memory addressed by the speed digital encoder and programmed to produce a digital output representin... | 09/12/1978 |
| 4068631 | Internal combustion engine electronic ignition control system An electronic ignition control system for internal combustion engine, notably for motor vehicles, which comprises a rotary member revolving at the engine velocity and provided with at least two reference marks of which the positions correspond to the maxi... | 01/17/1978 |
| 4018197 | Spark ignition systems for internal combustion engines A spark ignition system for a vehicle has a memory device receiving inputs representing engine parameters and producing an output representing the crankshaft position at which a spark is to be produced. This output is compared with a signal representing t... | 04/19/1977 |
| 4009697 | Automatic ignition advance for an internal combustion engine An ignition system and a method of ignition for an internal combustion engine in which an element is rotated in association with a position detector to provide a reference signal varying in duration with engine speed. Impulses of constant frequency are pr... | 03/01/1977 |
| 4000724 | Ignition arrangements for internal combustion engines An ignition system for an internal combustion engine which includes circuitry for generating a pulse of a duration which is substantially independent of engine speed within at least a predetermined speed range. Means are provided for varying the timing of... | 01/04/1977 |
| 3935846 | Installation for the digital-electronic control of inlet, exhaustion and injection valves as well as of the injection in internal combustion engines A system for the digital-electronic control of the inlet-, exhaust and possibly injection valves as well as of the ignition of internal combustion engines, especially of motor vehicle internal combustion engines, in which the valves are electromagneticall... | 02/03/1976 |
