Ignition control device with monostable elements for providing a

Details Ignition control device with monostable elements for providing a Ignition control device with monostable elements for providing a

1977-07-21

1979-05-08

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

1231465A, 315209T, 315209M, F02P 108, H05B 4114

Patent

active

041530322

ABSTRACT:
An electronic ignition control device includes a voltage step up coil with its primary winding in series with an electronic contact breaker. The contact breaker is directly controlled by a first monostable circuit which is connected to be triggered by signals from an ignition signal generator. A comparator receiver a voltage signal from a coil current transducer and compares this with a fixed voltage level, producing a square wave of duration dependent on the excess of the voltage signal above the fixed voltage level. An integrator integrates the output of the comparator and provides a pulse duration control signal to the first monostable. A second monostable triggered by the generator also produces a square of predetermined duration. A current limiting circuit is connected to limit current in the primary winding. The first and second monostable circuits and the current limiting circuit all have their outputs connected to an OR gate which controls the primary current.

REFERENCES:
patent: 3563219 (1971-02-01), Mieras
patent: 3626910 (1971-12-01), Porsche et al.
patent: 3831571 (1974-08-01), Weber
patent: 3882840 (1975-05-01), Adamian et al.
patent: 3945362 (1976-03-01), Neuman et al.
patent: 3955723 (1976-05-01), Richards
patent: 4043302 (1977-08-01), Sessions
patent: 4059083 (1977-11-01), Habert

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