Title:
CONTROL VALVE AND VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE TO WHICH CONTROL VALVE IS APPLIED
Document Type and Number:
WIPO Patent Application WO/2023/166962
Kind Code:
A1
Abstract:
A valve body 31 includes a valve housing hole 31a formed along an internal axial direction, and an advancing angle port 37, an introduction port 39, and a retarded angle port 38 that are arranged along an axial direction. A spool valve includes first and second land portions 32a and 32b provided on an inner peripheral surface of the valve housing hole so as to be slidable in the axial direction, and a coupling portion 32c connecting the first and second land portions and having a smaller outer diameter than the first and second land portions. A filtering member 21 includes a frame portion 22 fitted and held in a fitting groove 40, a filter portion 23 provided in the frame portion, and an engaging portion 24 that protrudes inward from the frame portion and comes into engagement with an inner open edge 39a of the introduction port by elastic force. Accordingly, enlargement of the valve body can be suppressed by improving the structure of mounting the filtering member to the ports of the control valve.
Inventors:
TAKADA YASUHIDE (JP)
Application Number:
PCT/JP2023/004713
Publication Date:
September 07, 2023
Filing Date:
February 13, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16K51/00; F01L13/00
Foreign References:
| JPH05306783A | 1993-11-19 | |||
| JP2017003041A | 2017-01-05 | |||
| JP2003227505A | 2003-08-15 | |||
| JP2016065597A | 2016-04-28 | |||
| JP2013170620A | 2013-09-02 | |||
| JP2008232272A | 2008-10-02 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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