Internal-combustion engines – Igniters – Incandescent
Patent
1975-08-18
1977-02-01
Cox, Ronald B.
Internal-combustion engines
Igniters
Incandescent
315209CD, F02P 100
Patent
active
040056945
ABSTRACT:
An internal combustion engine ignition device of the capacitive discharge type which utilizes a single transistor, semi-conductive controlled rectifier and attendant reactive circuitry to provide timed high voltage application to create a direct current arc, or plasma, at the spark discharge devices. The circuit is actuated by closure of the contact points to energize a transistor to operate in a Class D amplifier mode that, in turn, enables conduction through the primary of a transformer, the secondary of which places increased voltage charge on a capacitor to a predetermined charge level. Thereafter, opening of the contact points causes conduction of the semi-conductive controlled rectifier which allows discharge of the charged capacitor through a current steering bridge to the ignition coil to enable application of high voltage for establishing a direct current arc, or plasma, at the spark discharge device.
REFERENCES:
patent: 3334619 (1967-08-01), Penn
patent: 3531738 (1970-09-01), Thakore
patent: 3882839 (1975-05-01), Ganoung
Cox Ronald B.
The Plasmatronics Company
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