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Patent Searching and Data


Title:
HIGH PRESSURE FUEL PUMP
Document Type and Number:
Japanese Patent JP2009209838
Kind Code:
A
Abstract:

To provide a high pressure fuel pump of a short overall length manufacturable at low cost, in which the cylindricity of the internal circumferential surface of its cylinder is well secured.

The high pressure fuel pumps 100 and 200 are equipped with: housing 1 and 1Z having a pressurizing chamber 1a and cylinder 1c; a plunger 2 inserted into the cylinder 1c slidably and pressurizing the fuel sucked in to the chamber 1a; a plunger spring 4 to pull back the plunger 2 to the direction opposite the chamber 1a; and a flange 3 welded to the housings 1 and 1Z to serve for mounting the pumps 100 and 200 on the engine, wherein the housings 1 and 1Z are furnished with annular grooves 1g and 1h between the cylinder 1c and the flange 3 in such a manner as surrounding the cylinder 1c.


Inventors:
Murate, Satoru
Oguri, Tatsumi
Application Number:
JP2008000055059
Publication Date:
September 17, 2009
Filing Date:
March 05, 2008
Export Citation:
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Assignee:
DENSO CORP
International Classes:
F02M59/44; F02M53/02
Domestic Patent References:
JPH09250427A
JPS3419101Y1
JP2003065175A
JP2007120492A
Foreign References:
WO2000047888A1
Attorney, Agent or Firm:
青木 篤
鶴田 準一
島田 哲郎
谷光 正晴
篠崎 正海
武林 茂