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

1981-04-21

1983-11-01

Lall, Parshotam S.

Internal-combustion engines

Engine speed regulator

Idle speed control

123588, 74 8915, 251133, F02M 300

Patent

active

044125178

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. The valve shaft is supported by bearings so that the valve shaft cannot be rotated, but is able to move in the axial direction.

REFERENCES:
patent: 2919911 (1960-01-01), Furtah, Jr.
patent: 3558941 (1971-01-01), Brebbia et al.
patent: 3616884 (1971-11-01), Balz
patent: 3793896 (1974-02-01), Price et al.
patent: 3860029 (1975-01-01), Hubler
patent: 3989223 (1976-11-01), Burkhardt et al.
patent: 4072137 (1978-02-01), Hattori et al.
patent: 4114465 (1978-09-01), Troy
patent: 4136571 (1979-01-01), Frolichsthal

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