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Patent Searching and Data


Title:
HIGH-PRESSURE PUMP
Document Type and Number:
WIPO Patent Application WO/2019/065992
Kind Code:
A1
Abstract:
An intermediate member (81) is provided on the opposite side of a discharge seat member (71) from a pressurizing chamber (200) and has a first flow passage (83) for providing communication between the surface of the intermediate member (81), which faces the pressuring chamber (200), and the surface of the intermediate member (81), which faces away from the pressurizing chamber (200). A relief seat member (85) is provided on the opposite side of the intermediate member (81) from the pressurizing chamber (200), the relief seat member (85) having a relief hole (87) for providing communication between the surface of the relief seat member (85), which faces the pressurizing chamber (200), and the surface of the relief seat member (85), which faces away from the pressurizing chamber (200), the relief seat member (85) also having a second flow passage (89) for providing communication between the surface of the relief seat member (85), which faces the pressurizing chamber (200), and the surface of the relief seat member (85), which faces away from the pressurizing chamber (200). The intermediate member (81) has an annular groove (800) which is formed annularly in the intermediate member (81) at the interface between the intermediate member (81) and the relief seat member (85), and which connects the first flow passage (83) and the second flow passage (89).

Inventors:
KOSHIMOTO Shinichiro (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
SUZUKI Yoshihito (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
MAKIHARA Takayuki (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2018/036317
Publication Date:
April 04, 2019
Filing Date:
September 28, 2018
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
F02M59/46; F02M69/54; F16K11/22; F16K17/04
Foreign References:
JPH04237868A1992-08-26
JPS5865966A1983-04-19
JPS60247049A1985-12-06
US20140305410A12014-10-16
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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