Ignition timing control method for internal combustion engines

Details Ignition timing control method for internal combustion engines Ignition timing control method for internal combustion engines

1986-03-05

1987-11-03

Cox, Ronald B.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123424, F02P 515

Patent

active

047037334

ABSTRACT:
An ignition timing control method for an internal combustion engine having a catalytic exhaust emission purifier for scrubbing toxic exhaust gas components from engine exhaust gases by means of a catalyst, wherein the timing at which a mixture in the engine is ignited is controlled on the basis of an ignition timing set in dependence upon operating parameters of the engine. The method comprises the steps of sensing temperature of the engine after the engine is started, sensing elapsed time from the moment the engine is started when the sensed temperature lies within a predetermined temperature range, setting a delay angle correction amount in dependence upon the sensed elapsed time, correcting the ignition timing by the set delay angle correction amount, and controlling the ignition timing in accordance with the ignition timing so corrected. Preferably, the correction of the ignition timing is effected only when a particular operating condition of the engine is sensed.

REFERENCES:
patent: 3793833 (1974-02-01), Basshuysen
patent: 3896913 (1975-07-01), Maruoka
patent: 4096843 (1978-06-01), Marsee
patent: 4104998 (1978-08-01), Fenn
patent: 4351297 (1982-09-01), Suematsu
patent: 4367711 (1983-01-01), Ikeura
patent: 4570596 (1986-02-01), Sato

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