Engine rotation speed control system

Details Engine rotation speed control system Engine rotation speed control system

1980-02-04

1981-12-01

Burns, Wendell E.

Internal-combustion engines

Engine speed regulator

Idle speed control

123327, 123438, 123472, 123585, 123623, 123571, F02M 300, F02M 2300

Patent

active

043030483

ABSTRACT:
An engine rotation speed control system for automotive vehicles having internal combustion engines comprises a solenoid actuated valve having a solenoid coil for controling the flow of air through a throttle bypass passage to the intake manifold during engine idling upon energization of the solenoid coil. The electrical circuit for the solenoid coil is provided with a variable resistance arrangement so that sufficient current will be supplied to the solenoid coil upon engine starting in spite of a voltage drop in the battery at cold temperatures.

REFERENCES:
patent: 1611826 (1976-12-01), Fischer-Hinnen
patent: 2223151 (1940-11-01), Nadler et al.
patent: 2586962 (1952-02-01), Kleis
patent: 2807729 (1957-09-01), Redick
patent: 3718124 (1973-02-01), Burley
patent: 4099508 (1978-07-01), Noguchi et al.
patent: 4106462 (1978-08-01), Hildebrandt et al.
patent: 4231733 (1980-11-01), Hickam et al.
patent: 4233947 (1980-11-01), Abo
patent: 4240145 (1980-12-01), Yano et al.

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