SEAL STRUCTURE OF BYPASS INTAKE VOLUME CONTROL DEVICE

Title:

SEAL STRUCTURE OF BYPASS INTAKE VOLUME CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2003/021104

Kind Code:

A1

Abstract:

A seal structure of a bypass intake volume control device, comprising a bypass (30) bypassing a throttle valve (21) connected to the intake passage (17a) of a throttle body (17) and an actuator (39) for operating a bypass valve (35) connected to the bypass valve for opening and closing the bypass (30), wherein an annular seal member (57) closely fitted to the root part outer peripheral surface of the output shaft (39a) of the actuator (39) while holding airtightness therebetween is disposed between a valve hole (34) allowing the bypass valve (35) to be fitted movably in the axial direction and an actuator housing (42) allowing the actuator (39) to be fitted therein, whereby, regardless of the structure and type of the bypass valve, a clearance between the actuator and the bypass can be surely sealed with a single seal member, and the frictional resistance of the seal part can also be reduced to increase the responsiveness of the bypass valve.

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Inventors:

AKIYAMA HIROSHIGE
SHIMOKAWA JUNICHI
UEDA MINORU
HAYASHI AKIRA

Application Number:

PCT/JP2002/008675

Publication Date:

March 13, 2003

Filing Date:

August 28, 2002

Export Citation:

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Assignee:

KEIHIN CORP (JP)
HONDA MOTOR CO LTD (JP)

International Classes:

F02M23/00; F02M69/32; (IPC1-7): F02M69/32

Foreign References:

JPH02127778U	1990-10-22
JPS60157947U	1985-10-21
JPH11241668A	1999-09-07

Other References: