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Title:
HIGH PRESSURE FUEL DELIVERY PIPE FOR DIRECT INJECTION ENGINE, AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2011144768
Kind Code:
A
Abstract:

To prevent leakage of high-pressure fuel from a joint face between a mounting stay and a body pipe; and to enhance bond strength of the mounting stay, in a high-pressure fuel delivery pipe for direct injection engine.

The mounting stay 20 of a fuel delivery pipe is constituted of: a tubular boss part 20a; a connection block part 20b formed integrally with the boss part; and a recess circular arc face 20c which is formed to a tip face 20d of the connection block part and can abut on an outer peripheral face of the body pipe 10 with no space therebetween. The recessed circular arc face of the mounting stay abuts on the outer peripheral face of the body pipe and is integrally stuck thereto. The mounting stay may be integrally stuck to the body pipe 10 by furnace brazing, after the recessed circular arc face is positioned to and abuts on the outer peripheral face of the body pipe and is temporarily fitting and fixed. A cylindrical hole 20cA in which the body pipe 10 is inserted may be formed to the connection block part of the mounting stay, instead of the recessed circular arc face, and the body pipe may be inserted into the cylindrical hole and is integrally stuck thereto.


Inventors:
HARADA SHIGEKI
UENO HARUHIKO
Application Number:
JP2010006975A
Publication Date:
July 28, 2011
Filing Date:
January 15, 2010
Export Citation:
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Assignee:
MARUYASU & CO LTD
International Classes:
F02M55/02; F02M61/16
Domestic Patent References:
JP2002089406A2002-03-27
JP2002317731A2002-10-31
JP2003506613A2003-02-18
JP2006233806A2006-09-07
JP2006233964A2006-09-07
Foreign References:
WO2010001810A12010-01-07
Attorney, Agent or Firm:
Teruichi Hase