Throttle valve control system for automotive engine

Details Throttle valve control system for automotive engine Throttle valve control system for automotive engine

1991-09-30

1993-05-11

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123361, F02D 700

Patent

active

052092070

ABSTRACT:
A throttle valve control system calculates a throttle opening of a throttle valve according to a predetermined relationship based on the displacement of an accelerator and regulates an air-fuel ratio at which a fuel mixture is applied to the cylinders. The speed at which the throttle valve is driven is controlled, based on the throttle opening and the air-fuel ratio, so as to be lower when the air-fuel ratio provides a lean fuel mixture than when the air-fuel ratio provides a rich fuel mixture. The throttle valve is finally driven to open to the throttle opening at this speed.

REFERENCES:
patent: 4995363 (1991-02-01), Terazawa et al.
patent: 5002028 (1991-03-01), Arai et al.
patent: 5048481 (1991-09-01), Chan et al.
patent: 5048482 (1991-09-01), Kratt et al.
patent: 5048484 (1991-09-01), Terazawa et al.

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