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Class 123/632 - Ignition switch opened when engine stops


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter in which the accessory device opens the ignition
No. of patents: 21
Last issue date: 05/29/2007


NumberTitleIssue Date
7224565Control circuit for driving an electric actuator, in particular an electric fuel injector for an internal-combustion engine
A control circuit that drives an electronic actuator. The control circuit includes a direct voltage source, a chopper circuit arranged between the source and an electric actuator, and an electronic control circuit designed to apply to the chopper circuit a command s...
05/29/2007
6450157Automotive ignition system with adaptable start-of-dwell ring damping
An automotive ignition system includes a control circuit (52) operable to drive a coil current switching device (24) connected to an ignition coil (30) referenced at battery voltage. The control circuit (52) includes a drive circuit (20) and ring damping ...
09/17/2002
5526785Electronic ignition system
An electronic ignition system replacing corresponding stock circuitry but utilizing the stock magneto and ignition coil provided with the engine of a sport vehicle, such as a jet ski or snowmobile, to provide improved performance. A timing circuit is prov...
06/18/1996
5143553Control apparatus of ignition current conducting time
During an abnormal stop condition of an internal combustion engine, the semiconductor devices which control the supply of current to the ignition coils during a dwell time are subject to damage by a high transient current. To prevent this, at least one pr...
09/01/1992
5048503Automatic power interrupting system for vehicular control circuit
An automatic power interrupting system for a vehicular control circuit including a relay switch having a contact connected between a power source and the supply terminal of a control circuit and a relay coil connected with the power source, a control swit...
09/17/1991
5024205Method and apparatus for conserving battery power in a snowmobile electrical system
A snowmobile electrical system having a battery conservation circuit. The system is designed to conserve battery power after deactivation of the engine using the kill switch, even if the key switch is left on. Battery power is normally consumed by continu...
06/18/1991
4958608Ignition system for internal combustion engine
An ignition system for an internal combustion engine is widely known which includes a primary current control switch circuit adapted to be turned off at an ignition position to interrupt flowing of a primary current through an ignition coil, to thereby in...
09/25/1990
4893605Ignition device for internal combustion engine
An ignition device includes a capacitor 119, a semiconductor switch element 104 and an ignition control circuit 101, by which the cut-off of current supply to the ignition coil 105 is made gradual by supplying charge of the capacitor to the semiconductor ...
01/16/1990
4774925Ignition control device
An ignition control device for an internal combustion engine includes a digital control circuit which functions to reduce gradually a current flowing through a primary side of an ignition coil when a current supply to the primary side of the ignition coil...
10/04/1988
4770142Ignition timing control system for internal combustion engine
An ignition timing control system for an internal combustion engine cuts the ignition when the engine rotational speed is below a threshhold speed indicative of stall. On starting, the threshhold speed is set low. The engine speed is monitored, and a high...
09/13/1988
4679540Ignition system
The present invention is an ignition device comprising a circuit for generating an ignition signal in synchronism with the revolutions of an engine, a circuit for inhibiting an igniting operation, a circuit for detecting the starting state of the engine, ...
07/14/1987
4512309Spark control apparatus
A spark control apparatus (1) for an internal combustion engine using a breaker point (3) or solid state (5) ignition to control current to an ignition coil (11). The waveform of the ignition signal from the ignition system is applied to a converter secti...
04/23/1985
4402299Ignition coil energizing circuit
An ignition coil energizing circuit is provided which has a signal generator for generating an output signal having a frequency corresponding to an engine rotational speed, a switching circuit connected to an ignition coil, a current detector for detectin...
09/06/1983
4368717Automatic shut-off circuit for electronic ignition system
An electronic ignition system having an automatic shutdown feature is disclosed. In a first embodiment of the invention, should an output terminal of an integrated circuit (10, 10a) remain in a high voltage condition for a prolonged period of time, a capa...
01/18/1983
4356809Automotive stall circuit
A stall circuit is described for use in combination with an electronic adaptive dwell ignition system which allows an ignition coil to be de-energized whenever the frequency of operation of the ignition system decreases below a specified frequency without...
11/02/1982
4285314System to decrease operating jolts in a vehicle by controlling fuel and ignition timing of an internal combustion engine therein
In an internal combustion engine in which the fuel supply is interrupted during no-load operation to save gas the ignition timing is retarded following resumption of the fuel supply to cause the resumed torque to be applied slowly. A sequence of ignition ...
08/25/1981
4153031Apparatus for preventing sparks in the ignition system of an engine while the engine is at rest
The voltage in the secondary of an ignition coil is prevented from reaching an amplitude at which a spark might be created by a Zener diode connected in parallel with the series transistor acting as a switch which interrupts the current through the primar...
05/08/1979
4128091Hall effect electronic ignition controller with programmed dwell and automatic shut-down timer circuits
An electronic ignition controller operable from a Hall Effect pickup Device in a ballast-resistorless, inductive-type ignition system for an automotive vehicle internal combustion engine and featuring programmed dwell and automatic shut-down timer circuit...
12/05/1978
4106460Hall effect electronic ignition control unit with automatic shut-down timer
An electronic ignition controller using a Hall Effect pickup Device for use in a ballast-resistorless, inductive-type ignition system for an automotive vehicle internal combustion engine and featuring an automatic shut-down timer, which operates to block ...
08/15/1978
3965878Spark ignition systems for internal combustion engines
In a spark ignition system it is possible for a vehicle to stall with the contact breaker closed, and for a transistor or other device in series with the ignition coil to conduct heavily. This problem is overcome by limiting the time for which the ignitio...
06/29/1976
3937193Electronic ignition system
An electronic ignition system for a spark-ignition internal combustion engine. The ignition system is of the inductive type and includes an ignition coil having at least a primary winding and a switching device connected in series with it to control its c...
02/10/1976
 
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