Idling speed control system and method thereof

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

1995-03-07

1996-10-15

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

F02D 4116

Patent

active

055643876

ABSTRACT:
There is provided a system for controlling an idling speed of in engine, comprising an engine speed sensor provided to detect an engine speed and produce an engine speed signal indicative thereof, and a control unit provided to derive a physical amount corresponding to an engine torque being balanced with an engine friction around a predetermined target idling speed in response to the engine speed signal, and calculate a fuel injection amount to be injected by an injector and an opening degree of an idling speed control valve, both appropriate to the derived physical amount. There is further provided a method for controlling an idling speed of an engine, comprising detecting an engine speed, deriving a physical amount corresponding to an engine torque being balanced with an engine friction around a predetermined target idling speed in response to the engine speed, and calculating a fuel injection amount to be injected by an injector and an opening degree of an idling speed control valve, both appropriate to the derived physical amount.

REFERENCES:
patent: 4491108 (1985-01-01), Hasegawa et al.
patent: 4619232 (1986-10-01), Morris
patent: 4700675 (1987-10-01), Otobe et al.
patent: 4705001 (1987-11-01), Danno et al.
patent: 5065717 (1991-11-01), Hosokai et al.
patent: 5070837 (1991-12-01), Nishimura et al.
patent: 5253624 (1993-10-01), Anzai et al.

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