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| Number | Title | Issue Date |
| 7341051 | Electronic high frequency plasma catalyzer The catalyzer is applicable in the ignition of gasoline engines of transportation vehicles, generates, stand alone and stationary machines and others. Its advantage is that it has a higher quality of the ignition and an increased efficiency. The first version of the... | 03/11/2008 |
| 7293554 | Ignition coil driver device with slew-rate limited dwell turn-on A device to control the charging rate of an ignition coil for an internal combustion spark ignition engine. The device controls the turn-on rate of the primary coil by slew-rate limiting using switching devices and a Miller-effect capacitor in order to reduce second... | 11/13/2007 |
| 7207325 | Engine ignition system having noise protection circuit An ignition system for an internal combustion engine includes a switch circuit connected to an ignition coil to switch on or off current supplied to the ignition coil, a control circuit for providing a control signal for controlling the switch circuit based on the i... | 04/24/2007 |
| 7161264 | Semiconductor circuit having drivers of different withstand voltage within the same chip A semiconductor device comprises an embedded insulation layer 101 formed on a semiconductor substrate 100, plural power semiconductor elements 2, 3 formed on a semiconductor substrate 100 on the embedded insulation layer, a trench 4 | 01/09/2007 |
| 7131436 | Engine ignition system having noise protection circuit An ignition system for an internal combustion engine is connected to an ignition coil and to a circuit for providing an ignition signal. The ignition system includes a switch circuit connected to the ignition coil that switches on or off current supplied to the igni... | 11/07/2006 |
| 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 |
| 7051724 | Car-mounted igniter using IGBT An igniter of the present invention has an insulated gate semiconductor device having a collector terminal, an emitter terminal and a gate terminal, a current control circuit which limits current by controlling voltage at the gate terminal when current for flowing t... | 05/30/2006 |
| 7028649 | High flow reed valve assembly for a two-cycle engine A reed valve assembly in certain embodiments of the present teachings may include one or more of the following features: (a) a W shaped reed cage assembly having at least two reed cages, each reed cage having outer air ports and inner air ports wherein the inner air... | 04/18/2006 |
| 7007683 | Internal combustion engine ignition apparatus An internal combustion engine ignition apparatus includes a switching circuit having no power supply terminal connected to a power supply such as a battery is constructed, and including an output terminal connected to an ignition coil, an input terminal for receivin... | 03/07/2006 |
| 6935323 | Low current extended duration spark ignition system A system for firing a spark plug is disclosed. The system includes a timing controller configured to send a first timing signal and a second timing signal. The system also includes an ignition transformer having a primary winding and a secondary winding and a spark-... | 08/30/2005 |
| 6932065 | Internal combustion engine ignition apparatus There is proposed an internal combustion engine ignition apparatus in which a switching circuit having no power supply terminal connected to a power supply such as a battery, and includes an output terminal connected to an ignition coil, an input terminal for receiv... | 08/23/2005 |
| 6848437 | Ignition device for an internal combustion engine The ignition device for an internal combustion engine includes, a control unit (1) for outputting an ignition signal used to determine a time when an ignition plug (8) should be ignited, a switching unit (5) connected to the other terminal of a ... | 02/01/2005 |
| 6814066 | Internal combustion engine ignition device and igniter for same An internal combustion engine ignition device able to suppress misfires etc. at abnormal times and achieving smaller size and lower cost, provided with an IGBT (switching device SW), a current limiting circuit for limiting a primary current running through the IGBT ... | 11/09/2004 |
| 6777748 | Bi-directional semiconductor component A bidirectional semiconductor component having two symmetrical MOS transistor structures integrated laterally in a substrate and connected antiserially, their drain terminals being connected to one another. A zone having the same type of conductivity as the drain re... | 08/17/2004 |
| 6771519 | Method and apparatus for generating high voltage A power supply is described that comprises two or more flyback-type, DC-to-DC converters having substantially the same periods for their respective charge-discharge cycles; inputs from a common power source; outputs that are connected to a common output node and cir... | 08/03/2004 |
| 6758200 | Ignition coil driver chip on printed circuit board for plughole coil housing A product, product by process, and process according to the present invention integrates an ignition coil driver electronics or ignitor into a plughole coil housing. Electronic components are mounted directly to a printed circuit board serving as a direct connection... | 07/06/2004 |
| 6748937 | Hall effect ignition system A solid-state Hall effect ignition system which requires connection to only a single ignition coil lead wire. The lead wire connects to both an output transistor and to power supply circuitry arranged to provide an internal bias or supply voltage for the solid-state... | 06/15/2004 |
| 6679237 | Ignition drive circuit A drive circuit for an ignition system includes an ignition coil and spark plug associated with each cylinder of an internal combustion engine. Each ignition coil has a primary winding with the first end connectable to a power source and a second end oppo... | 01/20/2004 |
| 6662792 | Capacitor discharge ignition (CDI) system A capacitor discharge ignition (CDI) system is capable of generating intense continuous electrical discharge at a spark gap for a desired duration and may include a second controllable power switching circuit with its input terminal connected to an output... | 12/16/2003 |
| 6591821 | Variable voltage regulator for electronic accelerator in automobile The present invention comprises an Electronics Control Unit (ECU) power potential stabilizing circuit and an ECU reference potential stabilizing circuit. The ECU power potential stabilizing circuit eliminates noise and stabilizes voltage variation occurri... | 07/15/2003 |
| 6557537 | Ion current detection system and method for internal combustion engine A battery, an energy charge inductance, and a first transistor are connected in series in an ignition system. A primary winding and a second switching device are connected in series between the ground and a point between the energy charge inductance and t... | 05/06/2003 |
| 6425383 | Ignition coil with control and driver apparatus having reverse polarity capability An apparatus for a distributorless ignition system which responds to an ignition signal pulse train which is related to the compression and exhaust strokes of an internal combustion engine. The apparatus includes at least one ignition coil having a primar... | 07/30/2002 |
| 6336448 | Ignition semiconductor device In an ignition semiconductor device, a self-shut down circuit forcibly turns off an IGBT when an input signal is continuously applied. The self-shut down circuit is formed of a main-current gradual-reduction circuit having a timer circuit, a capacitor, a ... | 01/08/2002 |
| 6286491 | Ignition apparatus and an ignition control system of an internal combustion engine and IGBT of an internal combustion engine A mesh structure portion is provided at a part of a stripe structure IGBT chip, gate resistance of a respective minute IGBT is reduced and in a gate portion chip a filter is constituted by a resistor and a condenser. Under a severe environment such as an ... | 09/11/2001 |
| 6279558 | Ignition apparatus of internal combustion engine In an ignition apparatus, voltage is induced in a primary coil by a permanent magnet being rotated together with rotation of an output shaft of an engine. As the output shaft rotates, protrusions also revolve, inducing voltage in an electromagnetic pickup... | 08/28/2001 |
| 6189522 | Waste-spark engine ignition A distributorless ignition system is provided which includes an ignition coil for firing a pair of first and second spark plugs at the same time. The ignition system includes a changeover switch which, when assuming one operating position, causes the firs... | 02/20/2001 |
| 6167876 | Circuit arrangement for an ignition stage, in particular for the ignition circuit of a motor vehicle A circuit arrangement of an ignition output stage, in particular for an ignition circuit of a motor vehicle, is described. The circuit arrangement includes a multiple Darlington transistor (Darlington) which drives a primary winding of an ignition coil, a... | 01/02/2001 |
| 6055969 | Igniter for internal combustion engine having outer packing case equipped with coil and igniter unit In order to reduce the bulk and weight of the upper igniter case division of the armor case, and to lower the center of gravity of the total apparatus so as to provide an igniter which is tough to oscillate, the igniter for the internal combustion engine ... | 05/02/2000 |
| 5970965 | Inductive coil ignition system for an engine An inductive coil ignition system for an engine, having at least one ignition coil which includes a primary winding fed from a voltage source and having two terminals, and a secondary winding also having two terminals. A switching apparatus is arranged pa... | 10/26/1999 |
| 5967128 | Ignition apparatus for an internal combustion engine According to the invention, a primary winding of an ignition coil is coupled with an insulated-gate bipolar transistor (IGBT). The IGBT is controlled by a current restriction circuit, which includes a control transistor for performing the on-off operation... | 10/19/1999 |
| 5915367 | Igniter for internal combustion engine having outer packing case equipped with coil and igniter unit In order to reduce the bulk and weight of the upper igniter case division of an armor case, and to lower the center of gravity of the total apparatus so as to provide an igniter which is tough to oscillate, the igniter for the internal combustion engine h... | 06/29/1999 |
| 5875749 | A.C. ignition system for an engine An a.c. ignition system for an engine, with an ignition transistor that switches the primary winding of an ignition coil, with a control circuit for controlling the ignition transistor and a parallel circuit including a capacitor and a diode between the e... | 03/02/1999 |
| 5775310 | Ignition device for an internal combustion engine An igniter for an internal combustion engine includes a switching element performing flow and break control for a primary current flowing through an ignition coil depending upon a spark control signal output from an electronic engine control unit and a cu... | 07/07/1998 |
| 5634453 | Ignition apparatus for internal combustion engine An ignition apparatus for internal combustion engine includes an ignition power unit 1A having a power transistor 14A for feeding and shutting off a primary current i1 to and from an ignition coil 13 and a control circuit 2 having a CPU 21 for calculating... | 06/03/1997 |
| 5577485 | Ignition system A modular electronic ignition system for use in internal combustion engines is provided using latching Hall effect sensing devices. Two permanent magnets are affixed to a non-ferrous member mounted to the camshaft which extends through a seal in the timin... | 11/26/1996 |
| 5502338 | Power transistor device having collector voltage clamped to stable level over wide temperature range A power transistor device is provided which has a function of clamping the collector voltage to a stable level for a wide range of temperature variations. In the power transistor device, a plurality of pn junctions are formed to fabricate Zener diodes in ... | 03/26/1996 |
| 5397914 | Power transistor device including power transistors in darlington connection and zener diode which is coupled between collector and base of power transistors and which is formed in polysilicon film In a transistor where collector is connected to an inductive load and switching current flows, a Zener diode comprising structure of plural pn-junctions constituted in series form to a polysilicon is provided between collector and base. Further MOSFET is ... | 03/14/1995 |
| 5220903 | Electronic ignition system An electronic ignition system having a control unit to preset the ignition times of the individual cylinders, an ignition coil, and an end stage with a switching transistor (T1) for exciting the ignition coil. The end stage is provided with a s... | 06/22/1993 |
| 5109827 | Ignition apparatus for an internal combustion engine An ignition apparatus for an internal combustion engine is provided which is simple in the circuit arrangement and highly reliable in operation. An electromagnetic pickup coil generates an ignition signal having a magnitude proportional to the number of r... | 05/05/1992 |
| 5105794 | Ignition system for internal combustion engine An ignition system of the current interruption type for internal combustion engine wherein a three-pole magneto having a magnet positioned in a recess formed at a magnetic rotor is used as a power supply for the ignition system and a transistor switch cir... | 04/21/1992 |
