System for controlling the ignition timing of an internal combus

Details System for controlling the ignition timing of an internal combus System for controlling the ignition timing of an internal combus

1985-12-24

1986-11-04

Nelli, Raymond A.

Internal-combustion engines

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

123435, F02P 514, F02M 700

Patent

active

046205187

ABSTRACT:
A system is provided for quickly converging the ignition timing to a desired timing when a large deviation occurs in ignition timing. The system comprises rough correcting operation for roughly correcting the ignition timing to a desired ignition timing and for producing a completion signal when the correction reaches a complete state, fine correcting operation responsive to the completion signal for finely correcting the ignition timing by a correcting quantity. When the correcting quantity becomes larger than a predetermined value, the rough correcting operation restarts, so that a large deviation of the ignition timing is quickly deviated.

REFERENCES:
patent: 4351281 (1982-09-01), Geigar et al.
patent: 4376429 (1983-03-01), Youngblood

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