Ignition timing control for compensating knock in both steady-st

Details Ignition timing control for compensating knock in both steady-st Ignition timing control for compensating knock in both steady-st

1983-06-03

1986-05-20

Lall, Parshotam S.

Boots, shoes, and leggings

123425, 123417, F02P 504

Patent

active

045905657

ABSTRACT:
The ignition timing of an internal combustion engine is controlled to an optimum by compensating for engine knock. A microcomputer includes a memory for storing steady-state and transient-state ignition timing variables which are derived as a function of an operating condition of the engine. If engine knock occurs during a steady running state, the stored steady-state ignition timing variable is trimmed and if engine knock occurs during a transient state, the stored transient-state ignition timing variable is trimmed. Ignition is caused to occur in response to the stored value of the trimmed steady-state or transient-state ignition variable according to the detected engine condition.

REFERENCES:
patent: 4240388 (1980-12-01), Omori et al.
patent: 4347820 (1982-09-01), Deleris
patent: 4357918 (1982-11-01), Asano
patent: 4367531 (1983-01-01), Furuhashi et al.
patent: 4413599 (1983-11-01), Shigematsu et al.
patent: 4425890 (1984-01-01), Yamaguchi

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