Internal-combustion engines – Igniters – Incandescent
Patent
1975-10-06
1977-08-30
Dority, Jr., Carroll B.
Internal-combustion engines
Igniters
Incandescent
315209SC, F02P 306
Patent
active
RE0293741
ABSTRACT:
Solid state ignition circuitry for transmitting impulse voltages, produced by [a] magneto means associated with an internal combustion engine, to a transformer, which, in turn, generates a high voltage impulse to produce sparks in the spark plugs of the engine. The circuitry includes two silicon controlled rectifiers adapted to control the discharge of a capacitor through the transformer. The capacitor charges during one part of a given time period, e.g., the positive half cycle of alternating current produced by the magneto, and the silicon controlled rectifiers are adapted to discharge the capacitor during the other part of such time period, e.g., the negative half cycle of such current. The particular instant at which the capacitor discharges can be varied by adjustable means for applying controlled input voltages to the control electrodes of [of a potentiometer, which is associated with] the silicon controlled rectifiers. Thus, the timing of the ignition sparks generated in the spark plugs can [thus] be set by adjusting the [potentiometer] time at which the capacitor discharges.
REFERENCES:
patent: 3242420 (1966-03-01), Ulrey
patent: 3260251 (1966-07-01), Lange
patent: 3331362 (1967-07-01), Mitchell
patent: 3363198 (1968-01-01), Davies
patent: 3512042 (1970-05-01), Malavasi et al.
patent: 3703889 (1972-11-01), Bodig et al.
patent: 3855985 (1974-12-01), Shirai
patent: 3941110 (1976-03-01), Sekiguchi
Just Franklin H.
Powell Brent L.
Waters John A.
Argenbright Tony M.
Dority Jr. Carroll B.
Just Franklin H.
Waters John A.
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