Electricity: electrical systems and devices – Igniting systems – For electric spark ignition
Patent
1997-02-13
1999-01-19
Fleming, Fritz
Electricity: electrical systems and devices
Igniting systems
For electric spark ignition
F02P 309
Patent
active
058620338
ABSTRACT:
An ignition system exciter circuit includes a storage capacitor; a charging circuit for charging the capacitor; a discharge circuit connectable to an igniter plug; and a first switching circuit for controlling discharge of the capacitor through the discharge circuit and plug; the discharge circuit comprising a step-up transformer for transforming voltage stored on the capacitor to a higher voltage across the igniter plug when the first switching circuit is closed; the transformer having a primary winding and a secondary winding, with the secondary winding having a first terminal that can be coupled to a first terminal of the igniter plug and a second terminal that can be coupled to a second terminal of the igniter plug; and a second switching circuit that is responsive to a voltage transition across the igniter plug and that prevents the transformer primary and secondary windings from conducting spark discharge current.
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Bonavia Howard V.
Geislinger Dale F.
Fleming Fritz
Unison Industries Limited Partnership
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