Engine ignition system with automatic timing shift

Details Engine ignition system with automatic timing shift Engine ignition system with automatic timing shift

1982-05-03

1983-09-13

Cox, Ronald B.

Internal-combustion engines

High tension ignition system

Having dwell control

123644, F02P 100

Patent

active

044035926

ABSTRACT:
In addition to a first storage circuit in which a sawtooth wave is generated for comparing the ramp voltage with a threshold voltage that is caused to vary with engine conditions, particularly engine speed, for determining when the interruptor switch of the primary circuit of an ignition coil is closed to begin buildup of current therein, an auxiliary storage circuit is provided for generating an auxiliary signal within the duration of which the sawtooth wave of the main charging circuit must return to its starting condition, and another pulse signal present during all but an initial portion of the auxiliary signal for rapidly returning that sawtooth wave to its beginning a new beginning, thus making a longer part of the ignition cycle available for variation of the duration of the period during which the interruptor switch is closed to allow buildup of current in the ignition coil.

REFERENCES:
patent: 4245600 (1981-01-01), Katada
patent: 4265204 (1981-05-01), Junot
patent: 4267813 (1981-05-01), Hohne
patent: 4292942 (1981-10-01), Katada
patent: 4305370 (1981-12-01), Hohne
patent: 4356808 (1982-11-01), Bodig

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