Internal combustion engine electronic ignition system

Details Internal combustion engine electronic ignition system Internal combustion engine electronic ignition system

1981-05-18

1983-02-15

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Fuel injection system

123427, F02P 508

Patent

active

043734880

ABSTRACT:
Included in an internal combustion engine electronic ignition system of the type having discrete circuits responsive to each selected half cycle of a series of engine synchronized alternating current timing signals for effecting engine speed ignition spark advance adjustment and for producing a series of substantially square wave electrical signals having trailing edges substantially coincident with the point of zero crossover of each selected half cycle into the next half cycle is circuitry responsive to the square wave electrical signals for inhibiting engine speed ignition spark advance adjustment with engine speeds less than a selected value.

REFERENCES:
patent: 2801340 (1957-07-01), Keonjian et al.
patent: 3573545 (1971-04-01), Warner
patent: 3756212 (1973-09-01), Schirmer et al.
patent: 3874351 (1975-04-01), Adler et al.
patent: 4131098 (1978-12-01), Daniels et al.
patent: 4142489 (1979-03-01), Menard

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