Title:
HIGH-PRESSURE FUEL PUMP AND ELECTROMAGNETIC VALVE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/262217
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a structure configured such that a rod can shift relative to a movable core (36), wherein the occurrence of cavitation erosion in the movable core (36) is minimized. For this purpose, the movable core (36) has a recess (36b) formed in an opposing surface (36a) that opposes a fixed core (39), and a through-hole (36d) which is formed through the movable core in an axial direction of a rod (35) and through which the rod (35) is inserted. The rod (35) has a small-diameter part (35a) inserted through the through-hole (36d), and a flange part (35b) that has an outer diameter larger than the small-diameter part (35a) and that comes into contact with the recess (36b), and the rod (35) is configured separately from the movable core (36). Only one through-hole (36d) is formed in the movable core (36). A gap formed between an inner peripheral surface (36b1) of the recess (36b) of the movable core (36) and an outer peripheral surface (35b3) of the flange part (35b) is configured so as to expand from an open side toward an inner side of the recess (36b).
Inventors:
KODAMA YUITSU (JP)
TAKAHASHI YUUKI (JP)
TAKAHASHI YUUKI (JP)
Application Number:
PCT/JP2020/024075
Publication Date:
December 30, 2020
Filing Date:
June 19, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02M59/36; F02M59/44
Domestic Patent References:
| WO2019003719A1 | 2019-01-03 |
Foreign References:
| JP2016094913A | 2016-05-26 | |||
| JPH064368U | 1994-01-21 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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