Title:
FUEL INJECTION VALVE FOR PRESSURE ACCUMULATION-TYPE FUEL INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2009/072346
Kind Code:
A1
Abstract:
A fuel injection valve for a pressure accumulation-type fuel injection device,
in which a surge pressure occurring when a needle valve closes a seat of a nozzle
to close the valve is reduced to prevent degradation in fuel injection characteristics
and in strength of structural parts of the fuel injection valve. The fuel injection
valve has a groove formed in a control member connected to the needle valve. Before
a fuel injection, the groove is connected to a high-pressure fuel path. At the
time of the injection, the groove is disconnected from the high-pressure fuel
path, the groove and a leak line are interconnected, and fuel is injected from
a nozzle hole into a combustion chamber of an engine. Further, at the time of the
end of the injection, the groove is connected to the high-pressure fuel path.
Inventors:
OGAWA HISAO (JP)
Application Number:
PCT/JP2008/067868
Publication Date:
June 11, 2009
Filing Date:
September 25, 2008
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
OGAWA HISAO (JP)
OGAWA HISAO (JP)
International Classes:
F02M47/00; F02M61/10
Foreign References:
| JPH08296520A | 1996-11-12 | |||
| JPH08277762A | 1996-10-22 | |||
| JPH07238877A | 1995-09-12 | |||
| JPH02248646A | 1990-10-04 | |||
| JP2005201271A | 2005-07-28 | |||
| JP2000027734A | 2000-01-25 |
Other References:
See also references of EP 2177744A4
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. et al. (Ambassador Roppongi Buildings16-13, Roppongi 3-chome, Minato-k, Tokyo 32, JP)
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