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Title:
RELIEF VALVE DEVICE AND HIGH-PRESSURE PUMP
Document Type and Number:
WIPO Patent Application WO/2018/037963
Kind Code:
A1
Abstract:
This relief valve device comprises: a valve housing (41, 42, 431, 432, 44, 521, 522, 53, 631, 82, 831, 832, 84, 921, 922, 94) having communication passages (423, 433, 434, 435, 523, 524, 633, 634, 823, 833, 834, 923, 924) for providing communication between a first pressure chamber (14) and a second pressure chamber (8), the valve housings (41, 42, 431, 432, 44, 521, 522, 53, 631, 82, 831, 832, 84, 921, 922, 94) further having a relief chamber (420, 430, 520, 820, 830, 920) formed so as to be capable of being in communication with the second pressure chamber; a partition wall (49, 59, 89, 99) provided within the valve housing and separating the relief chamber and the communication passages; a first valve member (45, 55, 65) capable of blocking and permitting the flow of fluid between the first pressure chamber and the communication passages; a first pressing member (46) for pressing the first valve member; a second valve member (47, 57) capable of blocking and permitting the flow of fluid between the second pressure chamber and the relief chamber; and a second pressing member (48) for pressing the second valve member.

Inventors:
KOSHIMOTO Shinichiro (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
SUZUKI Yoshihito (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2017/029297
Publication Date:
March 01, 2018
Filing Date:
August 14, 2017
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
F02M59/46; F02M59/36; F02M59/44; F02M69/54; F16K17/04
Foreign References:
JP5418697B22014-02-19
JP2014224523A2014-12-04
JPS5338027U1978-04-03
Attorney, Agent or Firm:
HATTORI Masaki (HATTORI & ASSOCIATES, Eighth Floor Arex BLDG., 4-12, Marunouchi 1-chome, Naka-k, Nagoya-shi Aichi 02, 〒4600002, JP)
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