Spark ignition systems for internal combustion engines

Details Spark ignition systems for internal combustion engines Spark ignition systems for internal combustion engines

1974-09-26

1976-11-16

Cox, Ronald B.

Internal-combustion engines

Igniters

Incandescent

307235E, F02P 100

Patent

active

039917339

ABSTRACT:
A spark ignition system includes a variable reluctance pick-up producing output pulses when sparks are required. A capacitor is connected across the pick-up in series with a resistor and stores the integral of the pick-up output. Two voltage comparators compare the voltages on the capacitor and the resistor with threshold levels and a spark is only produced when both voltages exceed the threshold levels, so as to minimise the risk of spurious signals in the pick-up producing a spark.

REFERENCES:
patent: 3357416 (1967-12-01), Huntzinger
patent: 3467876 (1969-09-01), Tatsuzawa
patent: 3478512 (1969-11-01), Brahm et al.
patent: 3563219 (1971-02-01), Mieras
patent: 3587551 (1971-06-01), Harrow
patent: 3742918 (1973-07-01), Murtin et al.
patent: 3768024 (1973-10-01), Letosky
patent: 3798467 (1974-03-01), Gottwald
patent: 3831570 (1974-08-01), Compton

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