Ignition timing control system for internal combustion engines

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

1991-12-20

1992-12-15

Dolinar, Andrew M.

Internal-combustion engines

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

F02P 515

Patent

active

051707624

ABSTRACT:
An ignition timing control system for an internal combustion engine is operable to detect knocking occurring in the engine, determine basic ignition timing based upon operating conditions of the engine, correct the basic ignition timing by a correction value which is determined in response to an output from a knocking sensor, and inhibit correction of the correction value toward an advanced side with respect to at least one predetermined value in a timing retarding direction which is determined based upon operating conditions of the engine, when the correction value is greater than the at least one predetermined value. The correction value is initialized to a value based upon the difference between the correction value and the at least one predetermined value when the correction value exceeds the at least one predetermine value.

REFERENCES:
patent: 4612901 (1986-09-01), Iwata et al.
patent: 4898139 (1990-02-01), Kitayama et al.
patent: 4934327 (1990-06-01), Hidaka
patent: 5012782 (1991-05-01), Tokuda

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