Ignition timing control system for engine

Details Ignition timing control system for engine Ignition timing control system for engine

1991-12-10

1993-03-30

Nelli, Raymond A.

Internal-combustion engines

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

123422, 123416, F02P 514

Patent

active

051974312

ABSTRACT:
An ignition timing control system for an engine equipped with an automatic transmission corrects an ignition timing advance so as to retard ignition upon a demand to drop engine output torque when resumption of fuel injection is required after it has been interrupted during deceleration or when a shift of the automatic transmission is required. The ignition timing advance is corrected by a decaying retardation value so as to gradually fall with the passage of time. The corrected ignition timing advance is kept above a specific lower ignition timing advance limit, which is set smaller for lower air charging levels than for higher air charging levels. The corrected ignition timing advance is also kept below a specific lower limit ignition timing advance, which is set larger for lower air charging levels than for higher air charging levels.

REFERENCES:
patent: 4730587 (1988-03-01), Norota et al.
patent: 4732125 (1988-03-01), Takizawa
patent: 4790280 (1988-12-01), Umehara et al.
patent: 4915076 (1990-04-01), Takizawa
patent: 4932376 (1990-06-01), Linder et al.
patent: 4996959 (1991-03-01), Akimoto

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