Title:
HIGH-PRESSURE PUMP AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/116994
Kind Code:
A1
Abstract:
A pump body (11) for a high-pressure pump has a pressurization chamber (15) formed in a deep section of a cylinder (10) and blocks the pressurization chamber (15) on the opposite side to a plunger (40). The plunger (40), provided inside the cylinder (10) so as to be reciprocally movable, can change the capacity of the pressurization chamber (15). A large-diameter section (41) provided at an end of the plunger (40) protruding into the pressurization chamber (15) has an outer diameter that is larger than the inner diameter of the cylinder (10) and smaller than the inner diameter of the pressurization chamber (15). As a result, the large-diameter section (41) is locked by a stepped section (36) between the cylinder (10) and the pressurization chamber (15) and the plunger (40) is prevented from dropping out from the cylinder (10), in a state prior to the high-pressure pump being attached to an internal combustion engine.
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| JP2002227739 | FUEL INJECTION PUMP |
Inventors:
NAKAOKA MASAHARU (JP)
Application Number:
PCT/JP2015/006377
Publication Date:
July 28, 2016
Filing Date:
December 22, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02M59/26; F02M59/44
Foreign References:
| JP2012167663A | 2012-09-06 | |||
| JP2001355542A | 2001-12-26 | |||
| JP2003065175A | 2003-03-05 | |||
| JP2004138062A | 2004-05-13 | |||
| JP2008525713A | 2008-07-17 | |||
| DE843925C | 1952-07-14 | |||
| EP2312155A1 | 2011-04-20 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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