Air-intake duct and motorcycle comprising the same

Details Air-intake duct and motorcycle comprising the same Air-intake duct and motorcycle comprising the same

2006-07-31

2008-12-30

Kamen, Noah (Department: 3747)

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

C123S184210

Reexamination Certificate

active

07469671

ABSTRACT:
An air-intake duct through which air taken in from outside is guided to an air flow rate control device configured to control an amount of air flow that is supplied to an engine of a vehicle, including a pipe-shaped portion that is coupled to the flow rate control device and has an air-intake passage formed therein, a chamber portion that is located upstream of the air-intake passage of the pipe-shaped portion in the air flow and has an inner diameter larger than an inner diameter of the pipe-shaped portion, and an extended pipe-shaped portion configured to extend continuously from the pipe-shaped portion so as to protrude into an inner space of the chamber portion, the extended pipe-shaped portion forming an extended passage connected to the air-intake passage of the pipe-shaped portion.

REFERENCES:
patent: 4418676 (1983-12-01), Iwao
patent: 4838909 (1989-06-01), Bidanset
patent: 5549724 (1996-08-01), Mochida
patent: 05306659 (1993-11-01), None
patent: 2578094 (1996-11-01), None
patent: 09-021354 (1997-01-01), None

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