Ignition circuits for internal combustion engines

Details Ignition circuits for internal combustion engines Ignition circuits for internal combustion engines

1973-06-21

1976-01-13

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

307 10R, F02P 100

Patent

active

039318044

ABSTRACT:
A photo-electronic internal combustion ignition system in which a shutter rotated by the distributor shaft of the engine alternately supplies and cuts light from a photodiode to a photo-electric pickup. The circuit is devised to produce an exceedingly rapid cut-off of current to the engine induction coil, and for this purpose an amplifier following the pickup has a connection to the photo-diode which as soon as the pickup receives a predetermined minimum amount of light via the shutter, momentarily pulses the photo-diode so that the latter produces a short flash of high intensity light. Induction coil cut-off occurs when the photo-diode receives this light flash.

REFERENCES:
patent: 3581725 (1971-06-01), Hemphill
patent: 3613654 (1971-10-01), Gilbert
patent: 3646926 (1972-03-01), Plume
patent: 3682150 (1972-08-01), Ford
patent: 3710131 (1973-01-01), Ford

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