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Title:
COOLING DEVICE OF FUEL INJECTION VALVE
Document Type and Number:
Japanese Patent JP2009264255
Kind Code:
A
Abstract:

To provide an excellent cooling effect of a fuel injection valve and to adjust cooling water for each cylinder.

An annular cooling part, an annular groove, a first valve holder cooling passage and a second valve holder cooling passage are formed by blocking grooves and recessed parts formed in an outer circumferential surface of a first valve holder 67 by flattening with a second valve holder 68. Thus, the excellent cooling effect is provided easily compared to a case of forming a hole for cooling water by drill machining and the like. An orifice 79 for generating pressure difference between the first valve holder cooling passage and the second valve holder cooling passage is arranged at a cylinder outlet branch pipe 60 for each cylinder. Thus, a temperature and a flow rate of the cooling water in the cylinder outlet branch pipe 60 are measured for each cylinder, and a state of the cooling water is easily adjusted in each cylinder independently.


Inventors:
Aiko, Toyoji
Takemoto, Hidehiko
Ishii, Yukio
Application Number:
JP2008000115289
Publication Date:
November 12, 2009
Filing Date:
April 25, 2008
Export Citation:
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Assignee:
DAIHATSU DIESEL MFG CO LTD
MITSUI ENG SHIPBUILD CO LTD
International Classes:
F02M53/04; F01P3/02; F01P3/16; F02F1/36; F02M21/02; F02M31/20; F02M61/14
Domestic Patent References:
JP2002098000A
JP2007205295A
JPS627914A
Attorney, Agent or Firm:
山崎 宏
田中 光雄



 
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