Butterfly valve opening degree setting device

Details Butterfly valve opening degree setting device Butterfly valve opening degree setting device

1977-05-24

1979-09-25

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123 97R, 123198DB, 123DIG11, 261DIG18, F02M 114, F02M 1912

Patent

active

041686810

ABSTRACT:
Disclosed is a butterfly valve opening degree setting device comprising a diaphragm apparatus. The diaphragm apparatus has a diaphragm, a vacuum chamber and a control rod connected to the diaphragm. The control rod is arranged so as to be engageable with the butterfly valve disposed in the duct. The vacuum chamber of the diaphragm apparatus is connected to the vacuum port formed on the inner wall of the duct. The butterfly valve is held open at a position wherein the peripheral edge of the butterfly valve faces the vacuum port.

REFERENCES:
patent: 3721222 (1973-03-01), Shioya et al.
patent: 3752141 (1973-08-01), Charron et al.
patent: 3753427 (1973-08-01), Cedar
patent: 3760785 (1973-09-01), Harrison et al.
patent: 3841281 (1974-10-01), Mich
patent: 3996904 (1976-12-01), Kobuki et al.
patent: 4051823 (1977-10-01), Mogi et al.
patent: 4060063 (1977-11-01), Hirasawa
patent: 4095567 (1978-06-01), Chenet

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