Title:
FUEL INJECTION NOZZLE
Document Type and Number:
WIPO Patent Application WO/2004/036033
Kind Code:
A1
Abstract:
A seal structure (30) of a fuel injection nozzle for sealing high-pressure fuel in a pressure introducing chamber (21) with a high pressure annularly formed between an injector housing (2) and a valve body (6) in which a valve piston (5) is slidably inserted so as not to be leaked to a low pressure side from a clearance (28) formed between the injector housing (2) and the valve body (6), wherein an annular seal member (31) is installed in the pressure introducing chamber (21), the outer diameter dimension of the seal member (31) is made smaller than the diameter dimension of an outer annular wall (2B) on the outside of the pressure introducing chamber (21) to increase a tightness between the seal member (31) and the valve body (6), whereby a sealing function in the pressure introducing chamber (21) of the fuel injection nozzle (1) can be increased.
Inventors:
YOKOTA TORU (JP)
IINO KENICHI (JP)
IINO KENICHI (JP)
Application Number:
PCT/JP2003/012715
Publication Date:
April 29, 2004
Filing Date:
October 03, 2003
Export Citation:
Assignee:
BOSCH AUTOMOTIVE SYSTEMS CORP (JP)
YOKOTA TORU (JP)
IINO KENICHI (JP)
YOKOTA TORU (JP)
IINO KENICHI (JP)
International Classes:
F02M47/02; F02M61/16; F16J15/48; (IPC1-7): F02M61/16; F02M47/02; F16J15/46
Foreign References:
| JPH07293387A | 1995-11-07 | |||
| JPH0241766U | 1990-03-22 | |||
| JPH0236656U | 1990-03-09 | |||
| JPS6188078A | 1986-05-06 | |||
| JPH02130469U | 1990-10-26 | |||
| JPS6392055U | 1988-06-14 | |||
| JP2001159465A | 2001-06-12 |
Attorney, Agent or Firm:
Takano, Masatoshi (15-14 Shiba 3-chom, Minato-ku Tokyo, JP)
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