Throttle valve controlling apparatus employing electrically cont

Details Throttle valve controlling apparatus employing electrically cont Throttle valve controlling apparatus employing electrically cont

1988-07-22

1990-01-09

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Having plural throttle valve structure

123337, 123396, 123399, 123400, 13761416, F02D 908

Patent

active

048920711

ABSTRACT:
In a throttle valve controlling apparatus, there is provided a pair of first and second throttle valves. The first throttle valve is rotated by an electrically controlled actuator means, whereas the second throttle valve is rotated by an accelerator pedal. A first return spring is provided on the first throttle valve so as to return this valve to a first closed position when the electrically controlled actuator means is brought into malfunction, by which an engine speed is rapidly reduced. Under this malfunction condition, the second throttle valve can be independently controlled by the accelerator pedal.

REFERENCES:
patent: 4392502 (1983-07-01), Weston
patent: 4424785 (1984-01-01), Ishida et al.
patent: 4462357 (1984-07-01), Lockhart
patent: 4526060 (1985-07-01), Watanabe
patent: 4827884 (1989-05-01), Cook

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