Device of controlling the idling speed of an engine

Details Device of controlling the idling speed of an engine Device of controlling the idling speed of an engine

1981-12-30

1984-02-21

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

123361, F02D 1110

Patent

active

044323182

ABSTRACT:
An engine comprising a main intake passage having a throttle valve therein. A bypass passage is branched off from the main intake passage located upstream of the throttle valve and is connected to the main intake passage located downstream of the throttle valve. A flow control valve, actuated by a step motor, is arranged in the bypass passage. The step motor comprises a rotor and a stator having exciting coils. When the engine is operating in an idling state, the exciting coils are excited for rotating the step motor in a rotating direction wherein the engine speed approaches a desired idling speed. When the engine speed becomes equal to the desired engine speed, the exciting operation of the exciting coils is stopped.

REFERENCES:
patent: 4344398 (1982-08-01), Ikeura
patent: 4378767 (1983-04-01), Kobashi et al.

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