Throttle valve opening and closing apparatus for a vehicle, and

Details Throttle valve opening and closing apparatus for a vehicle, and Throttle valve opening and closing apparatus for a vehicle, and

1998-09-18

2000-07-18

Yuen, Henry C.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123399, F02D 900

Patent

active

060892080

ABSTRACT:
When the power source of a motor is turned off, a cam connected to the motor is held at an initial default stopping position by a return spring generating a torque in one direction and a throttle valve connected to a cam via an arm, and a valve gear is held at a corresponding default opening position. When the motor rotates and generates its torque, the arm first closes the throttle valve to a prescribed minimum opening and then opens the throttle valve in the fully open direction.

REFERENCES:
patent: 4392502 (1983-07-01), Weston
patent: 5014666 (1991-05-01), Westenberger
patent: 5161504 (1992-11-01), Guest, Jr. et al.
patent: 5367997 (1994-11-01), Kawamura et al.
patent: 5562081 (1996-10-01), Hitchcook
patent: 5787861 (1998-08-01), Suzuki et al.
patent: 5983858 (1999-11-01), Hashimoto et al.

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