Title:
ELECTROMAGNETIC INTAKE VALVE MECHANISM AND FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2023/058287
Kind Code:
A1
Abstract:
The present invention provides an electromagnetic intake valve mechanism and a fuel pump that can reduce the force of fuel pushing a valve body in the valve closing direction. The electromagnetic intake valve mechanism comprises a valve body, a valve seat on which the valve body is seated, and a stopper that restricts the movement of the valve body in the valve opening direction. The valve body has a first surface (seating surface) in contact with the valve seat and an outer peripheral surface substantially perpendicular to the first surface. The stopper has a press-fitting part for fixing that is formed in a cylindrical shape and has an inner peripheral surface facing the outer peripheral surface of the valve body and an outer peripheral surface opposite to the inner peripheral surface, and a plurality of communication grooves formed in the outer peripheral surface of the press-fitting part. A portion (end face side) of the press-fitting part is located closer to the valve seat than the first surface of the valve body when the valve is open.
Inventors:
SUGIYAMA YUKI (JP)
TAKAOKU ATSUSHI (JP)
OMATA SHIGEHIKO (JP)
AKIYAMA MORITSUGU (JP)
TAKAOKU ATSUSHI (JP)
OMATA SHIGEHIKO (JP)
AKIYAMA MORITSUGU (JP)
Application Number:
PCT/JP2022/027353
Publication Date:
April 13, 2023
Filing Date:
July 12, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16K15/02; F02M59/36
Foreign References:
| JP2016205400A | 2016-12-08 | |||
| JP2020172901A | 2020-10-22 | |||
| JP2014114722A | 2014-06-26 |
Attorney, Agent or Firm:
SHIN-YU INTERNATIONAL PATENT FIRM (JP)
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