Differential ignition timing firing control system

Details Differential ignition timing firing control system Differential ignition timing firing control system

1974-06-21

1976-06-22

Burns, Wendell E.

Internal-combustion engines

Igniters

Incandescent

123 809, 123 845, 123117R, F02P 302, F02B 7510

Patent

active

039644545

ABSTRACT:
A control system for controlling the ignition of fuel in an internal combustion engine with differential ignition timing comprising a first and a second ignition plug disposed in each combustion chamber of the engine, and a first and a second ignition system associated with the first and second ignition plugs respectively. A pulse delay circuit is provided in the second ignition system and the time constant thereof is varied depending on the operating condition of the engine for varying the rate of delay of the ignition timing of the second ignition plug in the second ignition system relative to the ignition timing of the first ignition plug in the first ignition system. This delay time is reduced in an operating range requiring a high engine output so that the demand for purificaton of exhaust gases and the demand for desired operating performance of the engine which are contradictory to each other can be satisfied.

REFERENCES:
patent: 3584608 (1971-06-01), Shibagaki
patent: 3716991 (1973-02-01), Tatsutomi et al.
patent: 3717135 (1973-02-01), Mayashi et al.
patent: 3791356 (1974-02-01), Saita
patent: 3828752 (1974-08-01), Hioki et al.

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