Title:
HIGH-PRESSURE PUMP AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/116995
Kind Code:
A1
Abstract:
A pump body (11) for a high-pressure pump (1) has a pressurization chamber (15) formed in the deep section of the cylinder (10). The plunger (40), provided inside the cylinder (10) so as to be reciprocally movable, can change the capacity of the pressurization chamber (15). A discharge passage (19) and a supply passage (18) are formed in the pump body (11) so as to extend from the pressurization chamber (15) in the radial direction of the cylinder (10). A pin (60) provided in an end section of the plunger (40) positioned in the pressurization chamber (15) protrudes further towards the outside than the inner circumference of the cylinder (10), towards one radial direction of the plunger (40). As a result, the pin (60) is locked into 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 (1) being attached to an internal combustion engine.
Inventors:
NAKAOKA MASAHARU (JP)
Application Number:
PCT/JP2015/006378
Publication Date:
July 28, 2016
Filing Date:
December 22, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02M59/44; F02M59/26
Foreign References:
| JP2003065175A | 2003-03-05 | |||
| JP2004138062A | 2004-05-13 | |||
| JP2012167663A | 2012-09-06 | |||
| JP2001355542A | 2001-12-26 | |||
| JP2008525713A | 2008-07-17 | |||
| DE843925C | 1952-07-14 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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