Method and apparatus for controlling the idling rotational speed

Details Method and apparatus for controlling the idling rotational speed Method and apparatus for controlling the idling rotational speed

1981-07-14

1984-02-21

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Idle speed control

123320, 123440, F02P 104, F02P 300, F02M 300

Patent

active

044323174

ABSTRACT:
The actual rotational speed of an internal combustion engine is detected, and the detected rotational speed is compared with upper and lower limit speed values to generate a control signal indicative of the change in the idle air flow to the engine to maintain the actual rotational speed within a desired range. The idle air flow to the engine is adjusted in response to the generated control signal. The above detection of the actual rotational speed or the adjusting is started after a predetermined period of time is passed from the moment when the engine falls into a predetermined idling condition.

REFERENCES:
patent: 3868933 (1975-03-01), Bigalke et al.
patent: 3881685 (1975-05-01), Hase et al.
patent: 3964457 (1976-06-01), Coscia
patent: 4204483 (1980-05-01), Harada et al.
patent: 4221191 (1980-09-01), Asano et al.
patent: 4281631 (1981-08-01), Tamaguchi
patent: 4291656 (1981-09-01), Miyagi et al.
patent: 4338899 (1982-07-01), Geiger et al.

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