Title:
PRESSURE ADJUSTMENT DEVICE AND FUEL SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/006044
Kind Code:
A1
Abstract:
This pressure adjustment device comprises: a first chamber communicating with an upstream path, a second chamber communicating with a downstream path, a third chamber communicating with a space inside a fuel tank, a first pressure-receiving section that receives pressure of fuel introduced from the upstream path, a second pressure-receiving section that receives pressure of fuel introduced from the downstream path, a first valve body that switches between a state in which the first chamber and the second chamber communicate and a state in which the first chamber and the second chamber are blocked, a second valve body that switches between a state in which the second chamber and the third chamber communicate and a state in which the second chamber and the third chamber are blocked, and a restricting member that restricts the amount by which the second valve body moves. The first valve body includes the second pressure-receiving section, a first contact part that comes into contact with a first seating surface provided around an opening of the second chamber, a communication hole via which the second chamber and the third chamber communicate, and a second seating surface which is provided around the communication hole and with which the second valve body comes into contact. At least one of the first valve body and the second valve body has an aligning structure.
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Inventors:
SHIRAI NAOKI (JP)
MIYABE YOSHIKAZU (JP)
NAKAO YOICHI (JP)
HONDA YOSHIHIKO (JP)
YOKOI SATOMI (JP)
TAKAHASHI HIROYUKI (JP)
KUSAKA SEIYA (JP)
MIYABE YOSHIKAZU (JP)
NAKAO YOICHI (JP)
HONDA YOSHIHIKO (JP)
YOKOI SATOMI (JP)
TAKAHASHI HIROYUKI (JP)
KUSAKA SEIYA (JP)
Application Number:
PCT/JP2020/024936
Publication Date:
January 14, 2021
Filing Date:
June 25, 2020
Export Citation:
Assignee:
AISAN IND (JP)
International Classes:
F02M37/00; F02M59/46; F02M69/00; F16K1/32; F16K1/42; F16K1/44
Foreign References:
| JP2012036817A | 2012-02-23 | |||
| JP2007138903A | 2007-06-07 | |||
| JP2007146669A | 2007-06-14 | |||
| JP2018048560A | 2018-03-29 | |||
| US7444990B1 | 2008-11-04 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
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