Throttle valve control apparatus

Details Throttle valve control apparatus Throttle valve control apparatus

1993-08-24

1996-06-11

Hill, Mitchell J.

Motor vehicles

With means responsive to speed of vehicle for maintaining...

Including fluid pressure actuated servomechanism

123361, 180177, 36442604, B60K 3100

Patent

active

055247245

ABSTRACT:
A throttle valve control apparatus serves to electrically drive a throttle valve which adjusts a rate of air flow into an engine mounted on a vehicle. The throttle valve control apparatus includes a lever connected to the throttle valve for movement in an opening direction and a closing direction together with the throttle valve. An opening degree limiting member is located in a side of the lever which corresponds to the opening direction. A spring urges the opening degree limiting member in a direction of closing the throttle valve. An accelerator interlocking and driving device serves to move the opening degree limiting member in accordance with a degree of operation of an accelerator member. A throttle actuator functions to adjust a degree of opening of the throttle valve. A vehicle speed sensor functions to detect a running speed of the vehicle. A guard actuator serves to adjust a position of the opening degree limiting member. An auto cruise control device serves to control the throttle actuator and to feedback-control the vehicle speed detected by the vehicle speed sensor at a target vehicle speed. A guard control means serves to control the guard actuator and to adjust the position of the opening degree limiting member at a position slightly separated from a position of the lever in the opening direction during control by the auto cruise control device. A changing device serves to change control of the position of the opening degree limiting member by the guard control device and control of the position of the opening degree limiting member by the accelerator interlocking and driving device with each other.

REFERENCES:
patent: 4879657 (1989-11-01), Tamura et al.
patent: 5018496 (1991-05-01), Buchl
patent: 5048631 (1991-09-01), Etoh
patent: 5086740 (1992-02-01), Wiggins et al.
patent: 5096015 (1992-03-01), Akishino et al.
patent: 5137104 (1992-08-01), Etoh
patent: 5177683 (1993-01-01), Oo et al.

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