Title:
HIGH-PRESSURE FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2019/012976
Kind Code:
A1
Abstract:
Provided is a high-pressure fuel pump having mounted therein a suction valve having reduced noise achieved while the reliability of strength is maintained. This high-pressure fuel pump is provided with: a suction valve for opening and closing a flow passage; a seat on which the suction valve sits; a stopper which, at the time of valve opening, prevents the suction valve from moving away from the seat; and a rod formed as a separate body from the suction valve and biasing the suction valve toward the stopper. The suction valve comprises a center section and an outer peripheral section which is formed radially outside the center section so as to extend upstream from the downstream surface of the center section, and which has an axial thickness smaller than that of the center section.
Inventors:
MATSUSHITA KOHEI (JP)
TANIE HISASHI (JP)
MIZOBUCHI YASUO (JP)
TOKUO KENICHIRO (JP)
TANIE HISASHI (JP)
MIZOBUCHI YASUO (JP)
TOKUO KENICHIRO (JP)
Application Number:
PCT/JP2018/024091
Publication Date:
January 17, 2019
Filing Date:
June 26, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02M59/36; F02M59/34; F02M59/44
Foreign References:
| US20100206252A1 | 2010-08-19 | |||
| JP2004218633A | 2004-08-05 | |||
| JP2016133010A | 2016-07-25 | |||
| JP2015127545A | 2015-07-09 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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