Idling speed control system and the method thereof

Details Idling speed control system and the method thereof Idling speed control system and the method thereof

1995-10-05

1997-01-07

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

12333921, F02D 4116, F02D 4304

Patent

active

055906303

ABSTRACT:
There is provided a system for controlling an idling speed of an engine, comprising: engine speed detecting means for detecting an actual engine speed, integration amount calculating means for calculating an integration amount based on an error between the actual engine speed and a predetermined target idling speed, reference parameter calculating means for calculating a reference parameter based on the actual engine speed and the integration amount, target physical amount providing means for providing an appropriate target physical amount which takes a balance between the engine torque and the engine friction around the predetermined target idling speed, depending on the reference parameter, fuel injection amount calculating means for calculating a fuel injection amount in accordance with the target physical amount, the fuel injection amount being injected by the injector, and opening degree determining means for determining an opening degree of the idling speed control valve in accordance with the target physical amount, the idling speed control valve being opened by the determined opening degree.

REFERENCES:
patent: 4862851 (1989-09-01), Washino et al.
patent: 4877002 (1989-10-01), Shimomura et al.
patent: 5052357 (1991-10-01), Fujimoto et al.
patent: 5083541 (1992-01-01), Chen
patent: 5111788 (1992-05-01), Washino
patent: 5121725 (1992-06-01), Araki
patent: 5163398 (1992-11-01), Buslepp et al.
patent: 5213077 (1993-05-01), Nishizawa et al.
patent: 5216610 (1993-06-01), Douta et al.
patent: 5235947 (1993-08-01), Watanabe
patent: 5495835 (1996-03-01), Ueda
Journal of JSAE, pp. 89 to 91, Oct. 4, 1994, Kurihara et al Development of a new idle speed control strategy "Fuel leading type".

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