Method of and apparatus for controlling ignition timing in inter

Details Method of and apparatus for controlling ignition timing in inter Method of and apparatus for controlling ignition timing in inter

1987-07-17

1989-01-10

Argenbright, Tony M.

Internal-combustion engines

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

F02P 515

Patent

active

047965860

ABSTRACT:
A method of and an apparatus for controlling ignition timing in an internal combustion engine. When the ignition timing has been retarded for preventing knocking and the engine operation thereafter moves into a region of operation where knocking control is unnecessary with the retardation of the ignition timing still in effect, the ignition timing is slightly advanced once per predetermined number of firings. Since the ignition timing is gradually restored, engine output hunting is prevented. The advancement of the ignition timing is determined whether or not a prescribed wait period has passed. The period varies depending on an engine speed.

REFERENCES:
patent: 4527524 (1985-07-01), Guipaud
patent: 4582034 (1986-04-01), Iwata
patent: 4631680 (1986-12-01), Korb et al.

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