Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1993-10-05
1995-04-11
Dolinar, Andrew M.
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
123634, F02P 306
Patent
active
054048605
ABSTRACT:
An ignition system of an internal combustion engine for simultaneously exciting pairs of spark plugs, which system includes direct current circuits connecting in series primary windings of ignition coils having a coupling coefficient of higher than or equal to 0.9 and connected to spark plugs of engine cylinders working in pairs, one cylinder in a compression stroke while the other in an exhaust stroke, MOSFETs at one ends of the circuits, and an energy accumulating portion including a capacitor and a wiring coil, wherein the MOSFET turns on at an exciting timing for the corresponding cylinder to excite the corresponding direct current circuit by excitation energy accumulated in the energy accumulating portion in order to produce sparks in paired spark plugs, resulting in reliable firing of air/fuel mixture in engine cylinders in compression stroke in a short period and small energy of current in the windings.
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Journal of Nippondenso Technical Disclosure 82-103, Jan. 15, 1992.
Dolinar Andrew M.
Moulis Thomas N.
Nippondenso Co. Ltd.
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