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| Number | Title | Issue Date |
| 7404396 | Multiple discharge ignition control apparatus and method for internal combustion engines In a multiple discharge ignition control apparatus, a battery, an energy storage coil and a first IGBT are connected in series. Further, the energy storage coil, a diode, a primary coil and a second IGBT are connected in series. The energy storage coil is connected ... | 07/29/2008 |
| 7148780 | Twin spark pencil coil An ignition apparatus having twin spark high-voltage outputs incorporates features of a pencil coil wherein at least a portion of a transformer assembly is disposed within a spark plug well when installed in an internal combustion engine, thereby reducing the space ... | 12/12/2006 |
| 7142080 | Stick-type ignition coil and terminal assembly therefor A stick-type ignition coil comprises a coil part, an insulating ring-shaped terminal assembly and a control part. The coil part includes a central core, a primary coil and a secondary coil. The terminal assembly is press-fitted on the upper end part of a primary spo... | 11/28/2006 |
| 7137385 | Device 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 |
| 7080639 | Soft IGBT turn-on ignition applications A circuit for controlling an ignition coil is provided. The circuit includes a first transistor, second transistor, and a capacitor. The first transistor is connected in electrical series between the ignition coil and a voltage reference. The capacitor is connected ... | 07/25/2006 |
| 6976482 | Electronic ignition system for vintage automobiles An electronic ignition system for a vintage automobile includes an ignition coil and an electronic switching circuit disposed in a coil box of the vintage automobile. The coil and electronic switching circuit are mounted within a coil box module that replaces four o... | 12/20/2005 |
| 6899092 | System and method for increasing spark current to spark plugs A system 10 for increasing electrical spark current to the spark plugs of an electronic ignition system for internal combustion engines includes a capacitor 12 parallel with a switch 14; a primary winding 16; a secondary winding 18 | 05/31/2005 |
| 6782880 | Ignition system and method for operating an ignition system An ignition system and a method for operating an ignition system provides reliable suppression of a closing spark ignition at relatively small expense and to achieve a reliable ignition by the ignition spark. To assure a high energy supply to the spark plug, an igni... | 08/31/2004 |
| 6779517 | Ignition device for internal combustion engine An ignition device for an internal combustion engine comprising: an ignition coil comprising a primary winding and a secondary winding, the ignition coil generating an igniting high voltage in the secondary winding by turning off a primary current flowing in the pri... | 08/24/2004 |
| 6705302 | Ignition device for an internal combustion engine An ignition device for an internal combustion engine having multiple cylinders and direct gasoline injection is described, so that the secondary current conduction time of the ignition coil can be prolonged controllably without increasing the primary current. At lea... | 03/16/2004 |
| 6672295 | Vehicle-mounted ignitor A circuit for supplying an oscillation suppress current is provided between a collector terminal and gate electrode of a main IGBT. The current supply circuit comprises a resistor and a diode which are connected in series. A bypass MOSFET is connected bet... | 01/06/2004 |
| 6666196 | Ignition system having improved spark-on-make blocking diode implementation An ignition coil assembly includes a high voltage (HV) diode at both ends of the secondary winding. The diodes prevent a spark-on-make condition. The diode implementation has particular benefits when used in a 42 volt automotive electrical system.... | 12/23/2003 |
| 6539930 | Ignition apparatus for internal combustion engine In an ignition apparatus for internal combustion engine, since a current caused to flow by an induced voltage generated at both ends of a secondary winding L2 when starting conduction to a primary winding L1 is checked from the conduction by diode for pre... | 04/01/2003 |
| 6257216 | Device for suppressing undesired ignitions in a spark ignition engine The primary winding of an ignition coil is connected in series with an ignition switch that can be switched by a control circuit. A circuit including a capacitor, a resistor, and a diode is configured between the control terminal and the collector of the ... | 07/10/2001 |
| 6116226 | Inductive ignition device An inductive ignition device for spark plugs of an internal combustion engine is having at least one activation circuit for at least one ignition coil and having at least one spark plug. A high-voltage switch associated with the at least one spark plug is... | 09/12/2000 |
| 6095125 | Ignition system having ignition coil An ignition system includes an ignition coil which provides ignition voltage of one polarity, an igniter which supplies the primary current to the ignition coil at regular timings and a zener diode connected in series with the primary coil of the ignition... | 08/01/2000 |
| 6082344 | Ignition device for an internal combustion engine To provide an ignition device advantageous in cost and space by using an inexpensive small-sized Zener diode having a Zener voltage lower than an induced voltage generated at a primary current supply timing, so as to prevent sparking of a spark plug due t... | 07/04/2000 |
| 6070568 | Ignition circuits The invention describes a novel circuit to be used in spark-ignition combustion engines. An ignition circuit according to the invention extends the voltage decay time following the initial generation of a spark across the spark plug gap. In addition, it r... | 06/06/2000 |
| 6032658 | Ignition system having ignition coil An ignition system includes an ignition coil which provides ignition voltage of one polarity, an igniter which supplies the primary current to the ignition coil at regular timings and a zener diode connected in series with the primary coil of the ignition... | 03/07/2000 |
| 5771871 | Ignition device for internal combustion engines An ignition device for internal combustion engines with stationary high-voltage distribution, having at least one ignition coil (11), wherein a controllable switch (12) is disposed in series with the primary winding (10) and is triggerable by a control un... | 06/30/1998 |
| 5594616 | Electrical component connecting provisions for an ignition coil In one embodiment of the present invention, an ignition coil assembly includes a primary coil and a secondary coil. A primary connector assembly of the ignition coil assembly includes a conductor which is adapted to electrically connect one terminal of th... | 01/14/1997 |
| 5564403 | Spark ignition system and spark plug for ultra lean fuel/air mixtures A spark ignition system and spark plug for utilization in an internal combustion engine combusting an ultra lean fuel/air mixture has capacitors and rectifiers built within the spark plug and the system is constructed to be compact and capable of deliveri... | 10/15/1996 |
| 5379745 | Ignition system for internal combustion engines with high-tension switches An ignition system for internal combustion engines, has a plurality of spark plugs, an ignition coil provided for the spark plugs and having a secondary circuit, at least one trigger diode cascade formed as a high voltage semiconductor switch and connecte... | 01/10/1995 |
| 5377653 | Internal-combustion-engine ignition device An internal-combustion-engine ignition device in which such components as the ion-current-detection unit are provided integrally with other ignition-device components to realize a simplified structure, thereby helping to attain a reduction in cost and an ... | 01/03/1995 |
| 5365910 | Misfire detector for use in internal combustion engine A misfire detector for use in an internal combustion engine has an ignition coil including a primary coil and a secondary coil. An interrupter circuit is provided for on-off actuation of primary current flowing through a primary circuit of the ignition co... | 11/22/1994 |
| 5293129 | Ionic current sensing apparatus for engine spark plug with negative ignition voltage and positive DC voltage application A direct current power supply applies a positive voltage between the center electrode and the ground electrode of a spark plug in an internal combustion engine after discharge of the spark plug. Ionic current flowing between the electrodes due to the posi... | 03/08/1994 |
| 5269282 | Misfire detector for use in internal combustion engine In a misfire detector for use in an internal combustion engine having an ignition coil, an electrical interrupter circuit interrupts a primary current flowing through a primary circuit of the ignition coil by which a spark plug is energized. A voltage div... | 12/14/1993 |
| 5265580 | Double coil ignition system for an internal combustion engine The ignition system for an internal combustion engine includes an ignition coil having a primary coil and a secondary coil; a plurality of semiconductor switching elements connected with the secondary coil which change abruptly from a blocking state to a ... | 11/30/1993 |
| 5144936 | Ignition apparatus for internal combustion engine An ignition apparatus for internal combustion engines of which configuration is simplified to reduce production cost and improve reliability of the apparatus. The present invention with the above object can be completed in three main embodiments. The igni... | 09/08/1992 |
| 5111798 | Transistor ignition circuit The present invention discloses a multiple spark transistor ignition circuit which is able to provide negligible retardation of ignition time, and/or prevent ignition with reverse rotation and/or provide an additional advanced spark and/or govern maximum ... | 05/12/1992 |
| 5056481 | Magneto-semiconductor ignition system To suppress negative half-waves derived from a magneto armature and not used for ignition without use of external damping networks, the semiconductor switch controlling current flow, and abrupt turn-off to initiate an ignition event, is formed as a monoli... | 10/15/1991 |
| 5044349 | High-voltage switch A high-voltage switch is suggested, particularly for ignition systems of internal combustion engines, which is characterized by a voltage-controlled electronic high-voltage switching unit which passes suddenly from the blocking state into the conducting s... | 09/03/1991 |
| 5044348 | Igniter for an internal combustion engine An igniter for an internal combustion engine has a plurality of drive circuits for generating an ignition voltage in the secondary winding of an ignition coil. A high-voltage diode is connected in series between the secondary winding of the ignition coil ... | 09/03/1991 |
| 4993395 | High-voltage opto-electronic switching circuit To reduce the size of a high-voltage semiconductor optically responsive switch, for example suitable to control the flow of ignition energy from an ignition coil (4) to a spark plug (ZK), a stack of disk or plate-shaped semiconductor chips (9) is formed w... | 02/19/1991 |
| 4674467 | Apparatus for controlling ignition in internal combustion engine The apparatus includes an ignition instruction signal generating unit for repeatedly generating a first ignition instruction signal instructing an AC discharging duration and a second ignition instruction signal instructing the current flow time of a firs... | 06/23/1987 |
| 4653460 | Ignition system for internal combustion engines In an ignition system for an internal combustion engine which is operable in synchronism with rotation of the engine to switch on and off a primary current in an ignition coil and applies to a spark plug a high voltage induced in the ignition coil seconda... | 03/31/1987 |
| 4556040 | Distributorless ignition system for multi-cylinder internal combustion engine with misfire suppression To prevent malfunction due to misfire of a distributorless internal combustion engine (ICE), in which two spark plugs (20, 21; 27, 28) are connected to the same output terminals of the secondary (9) of an ignition coil through respectively reversely polar... | 12/03/1985 |
| 4548174 | Dual plug ignition system An ignition system for an internal combustion engine has an ignition coil coupled to a first and second spark plug provided for each cylinder. A first diode is coupled in series between the first spark plug and the ignition coil. A second diode is coupled... | 10/22/1985 |
| 4506650 | Ignition device for internal combustion engines An ignition device for an internal combustion engine, in which a current-supply terminal other than two end terminals of the second winding of the ignition coil is provided in the second winding or at the tertiary winding of the ignition coil: a diode is ... | 03/26/1985 |
| 4487177 | Apparatus and method for starting a diesel engine using plasma ignition plugs A diesel engine is started by plural ignition plugs, each installed in a swirl chamber of a corresponding cylinder. Each ignition plug includes (a) an elongated center electrode, (b) a fuel-absorbent electrical insulator that encapsulates the center elect... | 12/11/1984 |
