Ignition timing control method and system

Details Ignition timing control method and system Ignition timing control method and system

1981-02-11

1983-03-29

Lall, P. S.

Internal-combustion engines

Charge forming device

Fuel injection system

123417, 1231465A, F02P 504

Patent

active

043779964

ABSTRACT:
An ignition timing control for an internal combustion engine is performed by measuring engine operating variables to estimate the engine operating conditions and determining an optimal ignition timing depending upon the measured engine operating variables. The thus determined ignition timing is subject to two limitations to limit the amount of ignition timing change to be within a predetermined range, thereby to prevent an abrupt change of ignition timing even when the engine operating conditions change from one state to another. The ignition timing may be further limited to limit the amount of ignition timing change toward a spark advance during an initial period of acceleration.

REFERENCES:
patent: 3898894 (1975-08-01), Aono et al.
patent: 4225925 (1980-09-01), Hattori et al.
patent: 4245591 (1981-01-01), Nishida et al.
patent: 4258684 (1981-03-01), Shira
patent: 4266518 (1981-05-01), Nishida et al.
patent: 4292941 (1981-10-01), Suzuki

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