Engine control system

Details Engine control system Engine control system

1995-11-06

1997-03-04

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02P 500

Patent

active

056069529

ABSTRACT:
A number of embodiments of engine control systems wherein the engine speed is controlled during a range of movement from idle to a pick-up position by varying primarily the spark timing and thereafter the throttle valve is opened. The throttle valve is maintained in its idle position in a partially open position which will permit greater air flow than required for idle and the speed is controlled by retarding the spark. In addition, further spark retardation is accomplished if the temperature of the engine is below a predetermined minimum desired operating condition for transferring more fuel energy to engine heating than power output for promoting more rapid warmup.

REFERENCES:
patent: 4492198 (1985-01-01), Okumura
patent: 5062403 (1991-11-01), Breckenfield et al.
patent: 5273016 (1993-12-01), Gillespie et al.
patent: 5448974 (1995-09-01), Toda
patent: 5515825 (1996-05-01), Arai et al.

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