Driving circuit for a capacitor discharge ignition system

Details Driving circuit for a capacitor discharge ignition system Driving circuit for a capacitor discharge ignition system

1989-07-14

1990-10-30

Nelli, Raymond A.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

F02P 306

Patent

active

049670379

ABSTRACT:
A capacitor-discharge ignition system discharges a load capacitor to drive an ignition coil for producing an ignition spark. The ignition system includes an oscillator generating complimentary pulse trains that activate a pair of power FETs to drive a transformer. The transformer generates an output voltage that is doubled in magnitude and stored in the load capacitor until the load capacitor is triggered by a trigger circuit to provide an ignition spark. A signal generated by a feedback circuit in response to the occurrence of an ignition spark is employed to inhibit further discharge of the load capacitor as well as to deactivate the transformer. An auxiliary D.C.-to-D.C. converter driven by the oscillator provides a supply voltage for the components of the ignition system.

REFERENCES:
patent: 4004561 (1977-01-01), Thieme
patent: 4014308 (1977-03-01), Schweitzer
patent: 4033316 (1977-07-01), Birchenough
patent: 4069801 (1978-01-01), Stevens
patent: 4097770 (1978-06-01), Fisher
patent: 4677960 (1987-07-01), Ward
patent: 4841925 (1989-06-01), Ward

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