Throttle valve opening control device

Details Throttle valve opening control device Throttle valve opening control device

1977-05-24

1979-09-25

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123103E, 123124A, 261DIG11, F02D 1108

Patent

active

041686802

ABSTRACT:
Disclosed is a throttle valve opening control device for use in an internal combustion engine. When the throttle valve is rapidly closed after completion of the warm-up of the engine, the throttle valve is temporarily held at a first opening degree which is greater than an idling opening degree and, then, the throttle valve is gradually returned to its idling position. Contrary to this, when the throttle valve is rapidly closed before completion of the warm-up of the engine, the throttle valve is temporarily held at a second opening degree which is greater than said first opening degree and, then, the throttle valve is gradually returned to its idling position.

REFERENCES:
patent: 3721222 (1973-03-01), Shioya et al.
patent: 3996904 (1976-12-01), Kobuki et al.
patent: 4014169 (1977-03-01), Omino
patent: 4060063 (1977-11-01), Hirasawa

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