Ignition timing control method for internal combustion engines a

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

1986-02-21

1987-09-29

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Idle speed control

123340, 123361, 123406, F02M 300

Patent

active

046962727

ABSTRACT:
An ignition timing control method for an internal combustion engine, which controls the ignition timing of a mixture to be supplied to the engine in a feedback manner responsive to the difference between the actual engine speed and the desired idling speed. When it is determined that the engine is in a predetermined idling region and the engine temperature is above a predetermined value, the ignition timing is retarded by a predetermined amount, and the ignition timing thus retarded is corrected by a correction value calculated by multiplying the difference between the actual engine speed and the desired idling speed by a predetermined coefficient, to thereby control the ignition timing to the ignition timing value thus corrected. The ignition timing feedback control is inhibited when the voltage at a predetermined input terminal of a central processing unit is at a predetermined input level.

REFERENCES:
patent: 4508076 (1985-04-01), Oda et al.
patent: 4509477 (1985-04-01), Takao et al.
patent: 4513710 (1985-04-01), Kobayashi et al.
patent: 4545349 (1985-10-01), Ito et al.
patent: 4580535 (1986-04-01), Danno et al.
patent: 4589390 (1986-05-01), Wazaki et al.

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