Electronic ignition advance circuit

Details Electronic ignition advance circuit Electronic ignition advance circuit

1976-12-13

1979-08-21

Jordan, Charles T.

Internal-combustion engines

Igniters

Incandescent

F02P 100

Patent

active

041649265

ABSTRACT:
An improved spark advance circuit for use in an electronic ignition system for an internal combustion engine in which pulses generated in a pickup synchronized with the engine crankshaft are fed to a circuit for generating a voltage proportional to the desired advance and to a phase locked loop which is adapted to generate, at its output, a ramp synchronized with the input pulses, with the ramp output and proportional voltage supplied to a comparator, the output of which generates firing pulses which are advanced as a function of engine operation for use in the electronic ignition system.

REFERENCES:
patent: 3297009 (1967-01-01), Sasaki et al.
patent: 3596114 (1971-07-01), Maupin et al.
patent: 3671767 (1972-06-01), Davis
patent: 3776606 (1973-12-01), Emerson
patent: 3831570 (1974-08-01), Compton et al.
patent: 3882835 (1975-05-01), Randriamanentena
patent: 3885534 (1975-05-01), Webster
patent: 3958543 (1976-05-01), Senda

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