Air amount control valve having valve body for controlling...

Details Air amount control valve having valve body for controlling... Air amount control valve having valve body for controlling...

2006-01-31

2006-01-31

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

C123S339250, C123S337000, C251S306000, C251S368000

Reexamination Certificate

active

06990952

ABSTRACT:
An air amount control valve is connected to a sidewall of a throttle body in which a main air passage for supplying intake air into an internal combustion engine is formed. The air amount control valve has a bypass air passage bypassing the main passage and controls an amount of air flowing through the bypass air passage, thereby controlling an idling speed of the engine. The air amount control valve includes an aluminum alloy housing having a valve hole and a rotatable valve body having a valve surface facing a fringe wall of the valve hole. To prevent deposits from adhering to the fringe wall facing the valve surface, an anodic oxide film is formed to cover the fringe wall and further a fluororesin film is formed on the anodic oxide film.

REFERENCES:
patent: 6192784 (2001-02-01), Kato et al.
patent: 2001-271727 (2001-10-01), None
patent: 2002-012987 (2002-01-01), None
patent: 2004-2977 (2004-01-01), None
patent: 2004-353576 (2004-12-01), None

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