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Class 123/406.66 - With resistor/capacitor (RC) timing circuit (e.g., multivibrator)


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the regulating means for varying
No. of patents: 90
Last issue date: 11/20/2007


1      
NumberTitleIssue Date
7297529Method and apparatus for performing a lateral flow assay
An embodiment of the present invention provides a method for performing a lateral flow assay. The method includes depositing a sample on a test strip at an application region, detecting a first detection signal arising from the test strip in the first detection zone...
11/20/2007
7252078Spark plug connector
A spark plug connector, in particular for large engines, includes an inductive interference suppression device having a ferromagnetic core. The inductive interference suppression device also has at least one winding, preferably a coil, and an ohmic d.c. resistance o...
08/07/2007
7171949Ignition timing controller for internal combustion engine
A crank angle sensor outputs a crank angle signal pulse every when a crankshaft rotates a predetermined crank angle. A time period sufficient for rotating a crankshaft between adjacent crank angle signal pulses is measured. The time period is referred to as a rotati...
02/06/2007
7049729Amplifier converting charge signal
A positive charge of a sensor element is charged in a signal converting circuit, is converted into a positive voltage, and is outputted. When the polarity of the charge of the sensor element is inverted to the negative and an output of the signal converting circuit ...
05/23/2006
6918382Hydrogen powered scooter
A scooter powered by a hydrogen powered internal combustion engine fueled by a throttled stream of air into which a controlled amount of hydrogen is injected. A hydrogen fuel control system is used to control the amount of hydrogen injected into the throttled air st...
07/19/2005
6478010Ignition module with rotational speed limitation for an internal combustion engine
A revolution threshold regulator and/or toggle switch has a first and a second fixed phase source of alternating current having a frequency proportional to the revolution speed of a rotor of an internal combustion engine. A trigger device scans the altern...
11/12/2002
6192859Low cost, temperature stable, analog circuit RPM limiter
Analog RPM limiting circuit for use with various types of ignition systems, employing a temperature stabilizing transistor Q3(6) configured as a single junction with biasing resistor R1a(7), a transistor Q2(5) used as a voltage threshold as well as a rapi...
02/27/2001
5575260Method and device for controlling ignition of an internal combustion engine as a function of engine RPM
A method of controlling ignition of an internal combustion engine as a function of engine RPM includes the steps of revolving a magnet wheel and inducing with the revolving magnet wheel in an induction coil an initial voltage. At least one delay element i...
11/19/1996
5517962Variable timing ignition circuit including conditional ignition retarding
A variable integration based ignition circuit for an internal combustion engine recognizes predetermined engine conditions and modifies or limits ignition advance when the predetermined conditions are violated to protect the engine. The ignition circuit i...
05/21/1996
5138995Ignition process, arrangement and apparatus for internal combustion engines with a magneto
An ignition method and system for internal combustion engines, especially in lawn mowers or chain saws, in which a magneto induces a plurality of alternating voltage half-waves for each engine revolution to charge an energy-storing element and to discharg...
08/18/1992
5048486Ignition circuit with timing control
An ignition apparatus which determines ignition timing corresponding to the running state of an internal combustion engine. Ignition timing is advanced for a period when a choke switch 21 used for improving startability of the engine at a low temperature ...
09/17/1991
5009209Ignition timing control circuit for an internal combustion engine
An ignition timing control circuit for an internal combustion engine of a ring gear tooth counting type includes a throttle sensor for sensing the load condition of the engine and generating an output voltage representative of the sensed load condition, a...
04/23/1991
4813393Electronic ignition system
An electronic ignition system for igniting an engine at an optimum time with respect to a variation of a phase shift in response to the engine speed and the vacuum degree in the carburetor; this electronic system mainly incorporating two sets of R-C phase...
03/21/1989
4809661Ignition system for internal combustion engine
An ignition system for an internal combustion engine capable of carrying out operaton of an ignition position using a generating coil arranged in a magneto as a signal coil and without using an integrating circuit. For this purpose, in the ignition system...
03/07/1989
4787360Electronically-controlled plasma ignition device for internal combustion engines
The present invention relates to an electronically-controlled plasma ignition device for internal combustion engines. A device according to the invention is characterized in that it includes the same number of high-frequency electrical-current generators ...
11/29/1988
4784100Electrically controlled engine ignition system for power boost and fuel economy
An electronically controlled ignition system which services to improve the efficiency of the engine so as to boost up the power and economize fuel consumption, and more particularly relates to an ignition system which is able to be controllably adjusted a...
11/15/1988
4712527Engine idle stabilization timing circuit
A timing circuit is provided for stabilizing idling of an internal combustion engine, particularly marine racing applications where idle speed must be reduced to enable gear engagement, notwithstanding the use of a racing cam otherwise requiring higher id...
12/15/1987
4694814Ignition system for internal combustion engines with a magnet generator
A control circuit for an ignition system having a magnet generator provides an abrupt adjustment of the ignition time point toward an advanced ignition when a predetermined upper speed range of an engine is reached. The control circuit includes a frequenc...
09/22/1987
4671237Ignition timing control system for internal combustion engines
To obtain optimum combustion of fuel in an internal combustion engine and prevent the occurrence of reverse torque therein, an ignition timing control system having a pulse generating circuit for generating first and second timing pulses corresponding to ...
06/09/1987
4669438Ignition timing control system for two-cycle internal combustion engines
An ignition timing control system for a two-cycle internal combustion engine compares a first reference signal which rises to a predetermined level as a first pulse signal is generated corresponding to a predetermined crank angle and which thereafter deca...
06/02/1987
4658788Ignition system for internal combustion engines
In an ignition system for an internal combustion engine, a signal generator generates a given ac signal in synchronism with the rotation of the engine and a waveform reshaping circuit reshapes the waveform of the ac signal from the signal generator thus g...
04/21/1987
4651706Ignition system for internal combustion engine
An ignition system for an internal combustion engine is disclosed which is adapted to carry out the comparison between an integrating voltage of a first integrating circuit and that of a second integrating circuit by means of a comparator to obtain advanc...
03/24/1987
4643150Ignition timing control system for internal combustion engines
To obtain optimum combustion of fuel in an internal combustion engine and prevent the occurrence of reverse torque therein, an ignition timing control system having a pulse generating circuit for generating first and second timing pulses corresponding to ...
02/17/1987
4638785Ignition system for internal combustion engines
An ignition system for an internal combustion engine is disclosed. The ignition system includes a timing signal detector responsive to the rotation speed of an engine to generate a pulse signal including a leading edge and a trailing edge corresponding to...
01/27/1987
4627398Electronic spark advance-type ignition system
In an ignition system of an electronic spark advance type including a pickup for generating a pair of position signals indicative of a maximum advance angle in terms of crankshaft rotation degrees for each crankshaft rotation, a signal generating circuit ...
12/09/1986
4597373Ignition system with safety circuit
A system for the automatic recommencing of the ignition function of an i.c. engine with a computer controlled ignition system. The system includes an oscillator which occasionally can stop working. An RC-circuit is charged by ignition pulses supplied by t...
07/01/1986
4577609CD ignition system with spark retard in neutral
A capacitor discharge ignition circuit adapted for use with an internal combustion engine, the circuit comprising a charge capacitor, a primary ignition coil, an ignition SCR, a first spark retard circuit in series with the charge capacitor, the ignition ...
03/25/1986
4559916Ignition apparatus for internal combustion engine
An ignition apparatus for an internal combustion engine causes the desired ignition advance characteristic of the engine by controlling an ignition advance in accordance with the status of the engine, for example, a temperature or a vacuum in a manifold, ...
12/24/1985
4558675Electronic ignition system for gasoline internal combustion engines
The invention relates to an electronic ignition system for gasoline internal combustion engines wherein a Hall sensor is used to generate the reference signal corresponding to the position of the crankshaft or the pistons in the cylinders. The ignition po...
12/17/1985
4538572Electronically controlled ignition system for an internal combustion engine
The invention constitutes a supplement to patent application No. P 31 34 883 and to patent application No. P 32 08 088. It relates to the electronic switching-off of the correction circuitry in the event of a large dwell angle and simultaneously maximum c...
09/03/1985
4516554Ignition timing control system for internal combustion engine
An ignition timing control system for an internal combustion engine in which the ignition timing is kept at a retarded constant level within a lower engine speed range and a higher engine speed range and is kept at an advanced constant level within a midd...
05/14/1985
4509482Electronically controlled ignition system
The invention relates to an electronically controlled ignition system in which a correction signal is obtained from a control signal derived directly from an ignition pulse sensor. The invention consists of producing a saw-tooth signal with a rising flank...
04/09/1985
4503823Ignition timing control apparatus for internal combustion engine
An ignition timing control circuit for internal combustion engine comprising a pulse generator which provides a pair of pulses in synchronization with the crank shaft rotation, a pair of polygonal wave generators for providing two types of polygonal waves...
03/12/1985
4473050Capacitor charge and discharge type ignition device
An inexpensive or economical ignition device which is capable of advancing the ignition timing in proportion to an increase in the engine speed when it stays within a preset range and obtaining constant minimum and maximum ignition angle characteristics w...
09/25/1984
4462363Ignition system for internal combustion engine
This invention relates to an ignition system for an internal combustion engine in which an advance characteristic is provided by utilizing a discharge of a capacitor. The ignition system comprises an ignition coil, a semiconductor switch to control a prim...
07/31/1984
4445478Ignition timing control system for internal combustion engine
What is disclosed is an ignition timing control system for internal combustion engine wherein an angular signal is generated at a predetermined crank position. This angular signal is fed into an integrator which is made operative to repeat its charging an...
05/01/1984
4444171Electronic ignition timing
A motorcycle two cylinder asymmetric ignition timing system includes an electronic ignition advance circuit. A spark advance control signal is derived from a base signal which in turn has a magnitude that is representative of the time duration between spa...
04/24/1984
4440130Ignition control device
An ignition control device includes a signal generating circuit for generating an output signal which has a frequency corresponding to the rotation speed of an engine, a rotation speed indication voltage generating circuit for generating a voltage which h...
04/03/1984
4432323Ignition system
An ignition system for an internal combustion engine is disclosed which includes a separate ignition transformer for each spark plug in the engine. Each of the ignition transformers is enabled by means of signals produced by a crankshaft position sensor. ...
02/21/1984
4413608Electronic ignition with advance
A trigger circuit comprises first, second and third triggerable switches each being rendered conductive when a signal at its control terminal reaches the threshold level. The first switch is connected to accept a timing pulse signal. The first and second ...
11/08/1983
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