Intake apparatus for internal combustion engine

Details Intake apparatus for internal combustion engine Intake apparatus for internal combustion engine

2007-07-17

2010-10-26

Kamen, Noah (Department: 3741)

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

C123S184530

Reexamination Certificate

active

07819104

ABSTRACT:
An intake apparatus for an internal combustion engine comprises an intake manifold (1); a rotary valve (10) including a plurality of valve portions (11) in communication with air feeding passages (3) through feed switch openings (7); a sealing member (60) fitted to the valve portion, the sealing member including ring portions (61) and interconnecting portions interconnecting the ring portions, recessed portions (76) defined on an outer side of the valve portions for receiving engaging portions (64) on inner sides of the interconnecting portions of the sealing members, wherein a distance (D1a) from a central portion of an outer peripheral edge (20a) of the closed area portion (20) to the rotational axis (P) is set smaller than a distance (D2) from a second central portion (43) of an outer peripheral edge (40a) of the open area portion (40) to the rotational axis.

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International Search Report for PCT/JP2007/064396 completed on Oct. 10, 2007.
Written Opinion of the International Searching Authority completed Oct. 10, 2007.

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