Intake control device

Details Intake control device Intake control device

1985-12-31

1987-10-20

Wolfe, Jr., Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

123442, 123585, F02M 312

Patent

active

047006765

ABSTRACT:
An intake control device including a main intake passage provided with a throttle valve and a shut off valve disposed downstream of the throttle valve, and a bypass passage branched off from an upstream portion of the throttle valve and joined to the main intake passage at a portion downstream of the shut off valve. The amount of air through the bypass passage is controlled by an idle control valve. Owing to this arrangement, the residual gas within the downstream portion of the shut off valve is effectively removed by sufficient amount of scavenging air supplied by the bypass passage.

REFERENCES:
patent: 4313410 (1982-02-01), Kunii et al.
patent: 4378766 (1983-04-01), Yamazoe et al.
patent: 4475505 (1984-10-01), Hasegawa et al.
patent: 4506640 (1985-03-01), Abe
patent: 4513700 (1985-04-01), Hayashida
patent: 4532902 (1985-08-01), Mizuno et al.
patent: 4562808 (1986-01-01), Tominaga et al.

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