Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1983-08-11
1985-04-02
Lall, Parshotam S.
Internal-combustion engines
Engine speed regulator
Idle speed control
F02M 300
Patent
active
045080763
ABSTRACT:
The idling speed of an internal combustion engine is controlled by controlling the position of a control valve disposed in the intake system of the engine to control the amount of intake air fed to the engine. A desired idling speed is determined according to the operating condition of the engine and the control valve is moved to a temporary target position which is expected to be suitable to obtain the desired idling speed. Then feedback control is carried out to converge the actual idling speed to the desired idling speed. When the actual idling speed is finally equalized to the desired idling speed, the actual position of the control valve at that moment is detected and memorized to be adopted as the temporary target position for the same operating condition in later control of the idling speed.
REFERENCES:
patent: 4237833 (1980-12-01), De Lauriers
patent: 4344399 (1982-08-01), Matsumura et al.
patent: 4414943 (1983-11-01), Nagase
patent: 4418665 (1983-12-01), Nagase
Oda Tatsuro
Tanaka Hideki
Yokooku Katsuhiko
Yoshioka Sadashichi
Baker Joseph J.
Ferguson Jr. Gerald J.
Lall Parshotam S.
Mazda Motor Corporation
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