Idling speed controlling system for internal combustion engine

Details Idling speed controlling system for internal combustion engine Idling speed controlling system for internal combustion engine

1982-10-08

1984-10-02

Lall, Parshotam S.

Internal-combustion engines

Engine speed regulator

Idle speed control

123360, 123587, 74860, F02M 300

Patent

active

044741537

ABSTRACT:
Feedback control is carried out to maintain the rotational speed of an internal combustion engine during idling at a desirable speed determined according to the operating conditions of the engine by controlling an adjusting valve for controlling the amount of air to be fed to the engine. The actual rotational speed of the engine and the actual opening angle of the throttle valve are detected and when the actual rotational speed is lower than a predetermined value and at the same time the actual opening angle of the throttle valve is smaller than a predetermined value, the feedback control is carried out. Further, whether or not the driving power of the engine is operatively transmitted to the driving wheels is detected, and the predetermined value for the rotational speed of the engine is set at a higher value when the driving power is not transmitted to the driving wheels than when the driving power is transmitted to the driving wheels.

REFERENCES:
patent: 3661131 (1972-05-01), Croft
patent: 4240145 (1980-12-01), Yano et al.
patent: 4344398 (1982-08-01), Ikeura
patent: 4363303 (1982-12-01), Takayama
patent: 4365599 (1982-12-01), Ikeura
patent: 4367708 (1983-01-01), Nakamura et al.
patent: 4401073 (1983-08-01), Furuhashi
patent: 4406262 (1983-09-01), Ikeura

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