Apparatus for regulating the idling rpm of an internal combustio

Details Apparatus for regulating the idling rpm of an internal combustio Apparatus for regulating the idling rpm of an internal combustio

1982-03-30

1984-01-17

Cuchlinski, Jr., William A.

Internal-combustion engines

Engine speed regulator

Idle speed control

123587, F02M 712

Patent

active

044258879

ABSTRACT:
An apparatus is proposed which serves to regulate the idling rpm of an internal combustion engine. To this end, a bypass valve is provided, which is disposed in a bypass around a throttle valve in the intake tube of the engine. A movable wall of the bypass valve separates a control chamber from a bypass chamber. The intake tube pressure downstream of the throttle valve in the bypass chamber prevails. The control chamber communicates via a control throttle restriction with atmospheric pressure and also, via an electromagnetically actuatable control valve which operates in accordance with operating characteristics of the engine, as well as with the intake tube pressure downstream of the throttle valve. The regulation of the idling rpm is thus effected by means of a proportional component effected by the bypass valve and an integral component effected by the pressure distribution between the control throttle restriction and the control valve. A pilot valve or magnetic pilot valve, by effecting a brief opening of the bypass valve, serves to prevent the loaded engine from stalling in the event of an abrupt closure of the throttle valve.

REFERENCES:
patent: 4325349 (1982-04-01), Fehrenbach
patent: 4344398 (1982-08-01), Ikeura

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