Intake valve device

Details Intake valve device Intake valve device

2005-04-05

2005-04-05

Solis, Erick (Department: 3747)

Internal-combustion engines

Engine speed regulator

Specific throttle valve structure

C251S305000, C251S308000

Reexamination Certificate

active

06874466

ABSTRACT:
An intake valve device includes a throttle body defining a bore for the flow of intake air. A throttle shaft is rotatably mounted to the throttle body. A slit is formed in the throttle shaft in a diametrical direction and extends throughout the diameter of the throttle shaft. The slit has opposing end walls along the rotational axis of the throttle shaft. A throttle valve is inserted into the slit of the throttle shaft and fixed in position relative to the throttle shaft. Possible intake air leakage channels are defined between the outer periphery of the throttle valve and the end walls of the slit. At least one restriction portion is formed on the throttle valve so as to extend into at least one of the possible leakage channels in order to narrow the possible leakage channel and reduce or inhibit the leakage of intake air.

REFERENCES:
patent: 5794591 (1998-08-01), Kalebjian et al.
patent: 6352241 (2002-03-01), Hannewald et al.
patent: 6494466 (2002-12-01), Hartman et al.
patent: 6553963 (2003-04-01), Noble
patent: 20030052294 (2003-03-01), Moore et al.
patent: 11-101137 (1999-04-01), None

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