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Patent Searching and Data


Title:
HIGH-PRESSURE FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2019/012970
Kind Code:
A1
Abstract:
A high-pressure fuel pump is provided which ensures oil-tight performance even under high fuel pressure and which has a lightweight, compact and economical discharge valve structure. This high-pressure fuel pump is provided with a discharge valve which is arranged on the discharge side of a pressurizing chamber, a discharge valve seat where the discharge valve is seated, and an opposing member which is independently configured as a separate member from the discharge valve seat and which is positioned on the side of the discharge valve opposite of the discharge valve seat, wherein a stroke direction restricting part for restricting displacement of the discharge valve in the stroke direction is formed on a tapered surface of the opposing member.

Inventors:
AKIYAMA MORITSUGU (JP)
USUI SATOSHI (JP)
YAMADA HIROYUKI (JP)
OMATA SHIGEHIKO (JP)
NEMOTO MASASHI (JP)
Application Number:
PCT/JP2018/023945
Publication Date:
January 17, 2019
Filing Date:
June 25, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02M59/46
Domestic Patent References:
WO2015163246A12015-10-29
WO2016098482A12016-06-23
WO2015163246A12015-10-29
Foreign References:
US20170159629A12017-06-08
JP2009531577A2009-09-03
JP2011080391A2011-04-21
Other References:
See also references of EP 3653867A4
Attorney, Agent or Firm:
TODA Yuji (JP)
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