Title:
FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2023/281937
Kind Code:
A1
Abstract:
A fuel pump comprising: a pump head (23); a plunger barrel (32) provided with a support hole (38) and having one end portion side of the support hole (38) in the axial direction fastened to the pump head (23); a plunger (41) supported by the support hole (38) so as to move along the axial direction; a pressurizing chamber (56) defined by one end portion of the support hole (38) and one end portion of the plunger (41) in the axial direction; a fuel discharge passage (73) having one end portion communicating with the pressurizing chamber (56); a fuel suction passage (70) having one end portion communicating with the fuel discharge passage; and a recessed portion (101) provided to at least one of the inner surface of the one end portion of the support hole (38) and the outer surface of one end portion of the plunger (41).
Inventors:
KATO KENSHO (JP)
Application Number:
PCT/JP2022/021941
Publication Date:
January 12, 2023
Filing Date:
May 30, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
F02M59/02; F02M59/44
Domestic Patent References:
| WO2002055881A1 | 2002-07-18 |
Foreign References:
| JPH10184483A | 1998-07-14 | |||
| JP2010180783A | 2010-08-19 | |||
| JPH10318091A | 1998-12-02 | |||
| US20200325868A1 | 2020-10-15 | |||
| JP2010229898A | 2010-10-14 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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