Idling speed control device of an internal combustion engine

Details Idling speed control device of an internal combustion engine Idling speed control device of an internal combustion engine

1983-04-26

1984-11-06

Lall, Parshotam S.

Internal-combustion engines

Engine speed regulator

Idle speed control

123588, 74 8915, 251134, 310 49R, F02M 300

Patent

active

044806140

ABSTRACT:
An idling speed control device of an internal combustion engine comprising a bypass passage which interconnects the intake passage located upstream of the throttle valve to the intake passage located downstream of the throttle valve. A flow control valve is arranged in the bypass passage and actuated by a step motor for controlling the amount of air flowing within the bypass passage to maintain the idling speed of an engine at a predetermined speed. The step motor comprises a screw threaded valve shaft and a rotor rotatably mounted on the valve shaft and having a screw threaded center hole which is in engagement with the screw threads of the valve shaft. A pair of stop pins, each being engageable with the corresponding end face of the rotor, is fixed onto the valve shaft.

REFERENCES:
patent: 2851959 (1958-09-01), Kangas
patent: 2860266 (1958-11-01), Schrader
patent: 2956188 (1960-10-01), White
patent: 3488030 (1970-01-01), Hulme et al.
patent: 3558941 (1971-01-01), Brebbia et al.
patent: 3700085 (1972-10-01), Balz
patent: 3989223 (1976-11-01), Burkhardt et al.
patent: 4072137 (1978-02-01), Hattori et al.
patent: 4295384 (1981-10-01), Brandt et al.

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