Method of and apparatus for controlling an idling control valve

Details Method of and apparatus for controlling an idling control valve Method of and apparatus for controlling an idling control valve

1990-11-02

1992-02-25

Cross, E. Rollins

Internal-combustion engines

Engine speed regulator

Idle speed control

123585, F02D 4100

Patent

active

050903810

ABSTRACT:
A control of an idling control valve which is arranged in a bypass air passage bypassing a throttle portion of a suction passage of an internal combustion engine and controlled by electric signals is carried out by setting an upper limit of electric current flowing in a drive circuit for the idling control valve, suppressing the electric current flowing into the drive circuit not to exceed the upper limit when an usual idling is effected, and releasing the electric current from the upper limit to flow electric current of a value larger than the upper limit to the drive circuit for a short time at a certain time of engine operation and/or at regular intervals.

REFERENCES:
patent: 4303048 (1981-12-01), Nishio
patent: 4356802 (1982-11-01), Kern et al.

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