Title:
ELECTROMAGNETIC SUCTION VALVE MECHANISM AND FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2022/269977
Kind Code:
A1
Abstract:
The present invention provides an electromagnetic suction valve mechanism and a fuel pump capable of reducing a force with which fuel presses a valve body in the valve closing direction. This electromagnetic suction valve mechanism comprises: a valve body; a valve seat on which the valve body sits; and a stopper which limits the movement of the valve body in the valve opening direction. The stopper has a shielding section (protruding section) provided with: a side surface (inner peripheral surface) facing the side peripheral surface of the valve body; and an end surface (tip surface) facing the valve seat. In a valve opening state in which a movement of the valve body in the valve opening direction is inhibited, the end surface of the shielding section is positioned closer to the valve seat side than a first surface (valve upstream-side end surface) facing the valve seat of the valve body.
Inventors:
IIZUKA AKIRA (JP)
YAMADA HIROYUKI (JP)
OMATA SHIGEHIKO (JP)
SUGIYAMA YUKI (JP)
YAMADA HIROYUKI (JP)
OMATA SHIGEHIKO (JP)
SUGIYAMA YUKI (JP)
Application Number:
PCT/JP2022/004022
Publication Date:
December 29, 2022
Filing Date:
February 02, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16K47/08; F02M59/36; F02M59/46
Foreign References:
| JP2014227961A | 2014-12-08 | |||
| JP2019065853A | 2019-04-25 | |||
| JP2015086736A | 2015-05-07 | |||
| JP2014114722A | 2014-06-26 |
Attorney, Agent or Firm:
SHIN-YU INTERNATIONAL PATENT FIRM (JP)
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