CONNECTOR FOR CIRCULATION, CONNECTION STRUCTURE FOR CONNECTOR FOR CIRCULATION, AND FUEL CIRCULATION SYSTEM

Title:

CONNECTOR FOR CIRCULATION, CONNECTION STRUCTURE FOR CONNECTOR FOR CIRCULATION, AND FUEL CIRCULATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2007/055118

Kind Code:

A1

Abstract:

Provided are a connector for circulation that can be inserted into a fuel injection section with relatively small force, a connection structure for a connector for circulation, and a fuel circulation system. The connector (30) for circulation is used for a fuel circulation system in an internal combustion engine having the fuel injection section and causes fuel to flow back from the fuel injection section to a fuel tank. The connector (30) is provided between the fuel injection section and a fuel circulation hose and is joined to the fuel injection section. The connector (30) has a second groove (32) and a tapered section (34). While being inserted in the connection section, the second groove (32) is locked together with a first groove of a connection section by a clip member (27). The tapered section (34) is reduced in diameter from the second groove in the direction of insertion. The inclination angle (θ1), relative to the insertion direction, of that side of the tapered section which is closer to the second groove is set smaller than the inclination angle (θ2), relative to the insertion direction, of that side of the tapered section which is farther from the second groove.

Inventors:

TAJIKA YOSHIO (JP)
UCHIDA AKIRA (JP)

Application Number:

PCT/JP2006/321603

Publication Date:

May 18, 2007

Filing Date:

October 30, 2006

Export Citation:

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Assignee:

BOSCH CORP (JP)
TAJIKA YOSHIO (JP)
UCHIDA AKIRA (JP)

International Classes:

F16L37/14; F02M37/00

Foreign References:

JP2003329184A	2003-11-19
EP1099896A2	2001-05-16
JP2003232483A	2003-08-22
JP2004125035A	2004-04-22
JP2001241584A	2001-09-07

Other References: