Title:
RELIEF VALVE
Document Type and Number:
WIPO Patent Application WO/2022/004425
Kind Code:
A1
Abstract:
This electromagnetic relief valve (100) comprises a pilot passage (10) facing a high-pressure passage (H) and a back-pressure chamber (8), a first passage (11) communicating with a drain chamber (12) and the back-pressure chamber (8), and a second passage (13) provided with a diaphragm (13a), wherein: the second passage (13) communicates with the pilot passage (10) and the back-pressure chamber (8); a main poppet (5) includes a main body part (50) separating from/seating on a suction poppet (3), and a pilot piston (51) separating from/seating on the main body part (50); the pilot passage (10) communicates with the back-pressure chamber (8) and the first passage (11); and the pilot piston (51) is configured to separate from the main body part (50) in response to pressure from the high-pressure passage (H) and move toward a sleeve (7), and to narrow the flow of working fluid guided to the first passage (11) from the back-pressure chamber (8) via between the pilot piston (51) and the sleeve (7).
Inventors:
TANAKA YUTA (JP)
Application Number:
PCT/JP2021/023161
Publication Date:
January 06, 2022
Filing Date:
June 18, 2021
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F16K17/10
Foreign References:
| JP2019158099A | 2019-09-19 | |||
| JP2001343082A | 2001-12-14 | |||
| JP2013145005A | 2013-07-25 | |||
| JPH09264355A | 1997-10-07 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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