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Class 123/625 - Responsive to engine or environmental condition


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter in which the ignition system includes means
No. of patents: 51
Last issue date: 03/25/2008


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NumberTitleIssue Date
7347191Vehicle fuel system
A fuel system with a fuel tank having at least one opening into an interior of the fuel tank, and an electrically operated vent valve having an inlet communicated with the interior of the fuel tank and an outlet for venting fuel vapor from the fuel tank. The vent va...
03/25/2008
7156082Controlling spark for an engine with controllable valves
A system and method to control spark in a cylinder of a multi-cylinder engine. Spark can be controlled in a cylinder while reducing the possibility of producing a spark at a spark plug coupled to an ignition coil. ...
01/02/2007
7137385Device to provide a regulated power supply for in-cylinder ionization detection by using the ignition coli fly back energy and two-stage regulation
This feature of the present invention comprises a method and apparatus that provides a regulated power supply for in-cylinder ionization detection by harvesting the excess ignition coil leakage and magnetizing energy immediately following the turn off of the ignitio...
11/21/2006
7131435Control apparatus for an internal combustion engine
In step 400, microcomputer 12 calculates a temperature change amount ΔT1 of ignition coil FC caused by the heat generating from the ignition coil FC, based on a previous calculated temperature T(n−1) of ignition coil FC and an engine rotation...
11/07/2006
7082934Controlling spark for an engine with controllable valves
A system and method to control spark in a cylinder of a multi-cylinder engine. Spark can be controlled in a cylinder based on operating conditions of a selectively operable valve. ...
08/01/2006
7013881Method for controlling ignition parameters of a spark plug for internal combustion engine
The invention is a method for controlling ignition parameters of a spark plug (16) for an internal-combustion engine whose ignition is controlled by an engine control calculator, with the spark plug receiving a high voltage (U_HT) and a current (I_HT) from an...
03/21/2006
7005855Device to provide a regulated power supply for in-cylinder ionization detection by using the ignition coil fly back energy and two-stage regulation
The present invention is directed to a dual charge rate power supply circuit and method for ionization detection. The circuit includes a first diode, first and second capacitors, and first and second current paths. The first diode includes an anode operably connecte...
02/28/2006
6886547Ignition system with multiplexed combustion signals
A plurality of ignition coils having a combustion detection capability, such as an ion sense capability or cylinder pressure detection capability, are connected to a common communication line. The combustion signals for the plurality of ignition coils is multiplexed...
05/03/2005
6877495Vehicle ignition system using ignition module with reduced heat generation
An ignition system includes an ignition coil, electronic control module that generates a signal, a distributor having a reluctor assembly, and an ignition module for receiving a signal from the electronic control module (ECM) and reluctor assembly. The ignition modu...
04/12/2005
6752134Ignition arrangement
An improved electronic ignition arrangement for an internal combustion engine having an output drive shaft, a rotary shaft drivingly coupled to the output drive shaft, a plurality of spark plugs, an ignition coil, and a rotor and distributor arrangement to effect se...
06/22/2004
6670722Boat ignition safety apparatus and method
A boat ignition safety apparatus and method that prevents a gasoline engine of a boat from being started until the enclosed engine compartment has received proper ventilation for a predetermined period of time to ensure dangerous gasoline fumes have been ...
12/30/2003
6615811Ignition coil integrated ion sense with combustion and knock outputs
An ignition coil having ion sense capability with combustion and knock outputs features improved determination of when to open and close a combustion window during which a combustion signal indicative of the level of combustion is calculated. The system a...
09/09/2003
6564786Apparatus and method for controlling ignition of an internal combustion engine
In the ignition apparatus for internal combustion engine according to the invention, during a period when spark discharge voltage is detected by a waveform detecting unit 20 and an ignition coil 12 supplies the spark discharge voltage by use of ignition d...
05/20/2003
6378513Multicharge ignition system having secondary current feedback to trigger start of recharge event
An ignition system for an internal combustion engine includes an ignition coil coupled to a spark plug in a combustion chamber of the engine, and a switch responsive to an ignition control signal for causing a primary current to flow through a primary win...
04/30/2002
6357427System and method for ignition spark energy optimization
A method for controlling spark energy from a spark plug of a combustion engine. The method includes determining a spark energy intensity based on at least one engine operating condition, determining a period of time to supply current to an ignition coil c...
03/19/2002
6247465System and method for preventing spark-on-make in an internal combustion engine using manifold pressure
A system is provided for preventing spark-on-make in an internal combustion engine, using manifold pressure information. The system includes a pressure sensor and a controller. The pressure sensor is adapted to detect pressure in an intake manifold and pr...
06/19/2001
6244247Ignition device for internal combustion engines
In an internal combustion engine, an engine control device 40 judges based on a cooling water temperature of an engine in what state the engine is. When judged that the engine is in a cold state, the engine control device 40 produces an ignition signal to...
06/12/2001
6213086Combustion engine
A process for operating of an internal combustion engine running on fuel that is both externally ignitible and self-ignitible, especially gasoline, the operating region of the engine including self-ignition or compression-ignition (CI) regions and externa...
04/10/2001
6186130Multicharge implementation to maximize rate of energy delivery to a spark plug gap
An ignition control system for an internal combustion engine includes a control circuit, an ignition coil, a switch, and a sensing circuit. The control circuit is configured to interrupt a primary current, thereby establishing a secondary current which is...
02/13/2001
6131555System for controlling ignition energy of an internal combustion engine
A system for controlling ignition energy of an internal combustion engine includes an ignition coil having a primary coil and a secondary coil coupled to first and second electrodes of an ignition plug defining a spark gap therebetween, wherein the primar...
10/17/2000
6032657Multi spark ignition system
An ignition system for internal combustion engines with spark ignition comprising an ignition coil, a spark plug connected to the secondary winding, an electric supply circuit associated with the primary winding of the coil, where the said circuit include...
03/07/2000
6026792Method of operating a fuel injected engine
A method of operating a two-stroke, spark-ignited, internal combustion engine in which the ignition is time-based controlled at low or idle speeds and is crank-angle-based controlled at higher speeds....
02/22/2000
5832908Cylinder-discriminating device for internal combustion engines
A cylinder-discriminating device for an internal combustion engine is provided. A reference timing signal is generated whenever the engine rotates through a predetermined rotational angle. A secondary-side sparking current produced in a particular cylinde...
11/10/1998
5755204Cylinder-discriminating device for internal combustion engines
A cylinder-discriminating device for an internal combustion engine is provided. A reference timing signal is generated whenever the engine rotates through a predetermined rotational angle. A discharge period is detected based on a sparking voltage produce...
05/26/1998
5636620Self diagnosing ignition control
A self-diagnosing ignition drive circuit for applying a first ignition drive signal to a spark plug in an internal combustion engine cylinder for generating an arc across the electrodes thereof to ignite an air/fuel mixture in the cylinder and, following ...
06/10/1997
5513618High performance ignition apparatus and method
Apparatus and method for a plasma discharge for ignition in an internal combustion engine. A digital electronic system controls ignition performance and can provide an ignition discharge throughout an entire power stroke of a piston in a cylinder. The dis...
05/07/1996
5447136Ignition system for internal combustion engines
The invention provides sparkplug firing on-time control in a manner to prevent misfiring, by detecting one of the onset of combustion or a predetermined time after the onset of spark firing, and then discontinuing the sparkplug firing. This insures no mis...
09/05/1995
5267164Method and system for correcting a knock detection period and for detecting knock generated in an automotive engine
A basic knock detecting period is set based on engine speed and engine load. The basic knock detecting period is corrected with a learning correcting quantity in accordance with engine operating conditions, and a knock detecting period is determined based...
11/30/1993
5247919Ignition system for an engine
An ignition system has a burn sensor detects the condition of the burn of the fuel so that the ignition system stops supplying the current to the ignition plug when the burn of the fuel is detected. On the other hand, if the burn of the fuel is not suffic...
09/28/1993
5105783Digital ignition system
A method of and apparatus for enabling at least one spark plug of a internal combustion engine to provide a fuel igniting spark at a selectable time in the engine cycle is disclosed. Sensors provide a first engine rotation determined pulse train the repet...
04/21/1992
5038744Method and apparatus for controlling spark ignition in an internal combustion engine
A method and apparatus for controlling spark reignition in an internal combustion engine based on the detected luminosity or pressure in the combustion chamber is provided. Only the luminosity or pressure measurement may be used as a basis for this contro...
08/13/1991
4947810Method and arrangement for improving the starting ability of an internal combustion engine, when an attempt to start the engine has failed
The invention relates to a method and arrangement for cleaning the spark plugs of an internal combustion engine automatically subsequent to the engine stopping and then, preferably, after an unsuccessful attempt to start the engine. Consequently, conditio...
08/14/1990
4920944Ignition device for an internal combustion engine with two spark plugs per cylinder
The device comprises a control center arranged to control a first and second ignition coil and to operate the engine under double ignition during normal use and under single ignition during full induction; in this latter case, ignition by the spark plugs ...
05/01/1990
4915086Variable-energy-spark ignition system for internal combustion engines, particularly for motor vehicles
An ignition system for at least one spark plug of an internal combustion engine includes an ignition coil having a secondary winding connected to the plug, a control commutator device controlling the flow of current in the primary winding of the ignition ...
04/10/1990
4846129Ignition system improvements for internal combustion engines
This invention relates to a number of improvements in ignition systems of spark ignition engines. A detector is employed to sense the first or "breakdown" phase of spark discharge across the spark plug which causes a short duration high current flow acros...
07/11/1989
4517952Twin ignition plug control system for an internal combustion engine
A twin ignition plug control system for an internal combustion engine by which two point ignition is switched to one-point ignition only when engine load is heavy and the engine is not being warmed-up. Since the control system according to the present inv...
05/21/1985
4502454Ignition system for an internal combustion engine
An ignition system for a multi-cylinder internal combustion engine eliminates high-voltage cables and a mechanical distributor in order to reduce electrical power losses due to joule effect caused mainly by the high voltage circuit, comprises a plurality ...
03/05/1985
4469082Pulse width control circuit in which a feedback amount is varied depending upon an operating temperature
An ignition coil control circuit compares the coil input current with a reference level, and the duty ratio of the output current is altered accordingly. The reference level is raised during cold weather operations, raising the duty ratio. Once the operat...
09/04/1984
4440141Method and apparatus for controlling energizing interval of ignition coil of an internal combustion engine
Energizing interval of an ignition coil, which is basically determined on the basis of the rotational speed of an engine, is corrected by adding thereto an extension amount which is either a function of the rotational speed of the engine or a given upper ...
04/03/1984
4421091Ignition system for internal combustion engines
In an ignition system for an internal combustion engine in which the flow of a primary winding energizing current is switched on and off in synchronism with the rotation of the engine and a high voltage is induced in the secondary winding upon switching o...
12/20/1983
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