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Patent Searching and Data


Title:
FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2016/075898
Kind Code:
A1
Abstract:
In the present invention, multiple pump chambers (40) are continuously connected as being prescribed between positions where inner teeth (300) of an outer gear (30) and outer teeth (200) of an inner gear (20) are closest to each other. A reference axis (Ae) is defined in a decentering direction (De), a deviation angle (θ) from the reference axis (Ae) is defined in a rotation direction (Rig) of the inner gear (20), and an orthogonal axis (Ao) which forms an orthogonal deviation angle (θ) to the reference axis (Ae) is defined. In this case, the deviation angle (θ) at the center position (P) of a suction port (120) in the rotation direction (Rig) is set on the smaller angle side than the orthogonal axis (Ao), and the suction port (120) is arranged on the orthogonal axis (Ao) while being deviated toward the smaller angle side from a peak angle at which volume expansion amount of each pump chamber (40) becomes the maximum at each unit angle of the deviation angle (θ).

Inventors:
HAYASHI, Norihiro (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2015/005525
Publication Date:
May 19, 2016
Filing Date:
November 04, 2015
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
F04C2/10; F04C15/00
Foreign References:
JP2000265972A2000-09-26
JP2007509284A2007-04-12
DE102009023816A12009-12-24
Attorney, Agent or Firm:
KIN, Junhi (6th Floor, Takisada Bldg. 2-13-19, Nishiki, Naka-ku, Nagoya-cit, Aichi 03, 〒4600003, JP)
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