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Title:
Balanced Pressure Dual Pump
Document Type and Number:
WIPO Patent Application WO/2014/057649
Kind Code:
A3
Abstract:
A dual outlet pressure pump comprising a first pump entity (10) and a second pump entity (20), whereby a dual pump housing (17) comprises a first pump rotor cavity (36) and a second pump rotor cavity (39) separated by a diaphragm (37) with a bore and whereby a first pump rotor (16) and a second pump rotor (26) are operatively arranged on a common drive shaft (15) to convey a fluid, whereby the angular placement of elements of the first pump entity (10) relative to elements of the second pump entity (20) about a pump axis (40) is such, that the radial force exerted by the fluid pressure in a first pump discharge region (44) of the first pump rotor cavity (36) upon the first pump rotor (16) is opposed in direction to the radial force exerted by the fluid pressure in a second pump discharge region (48) of the second pump rotor cavity (39) upon the second pump rotor (26). A hydraulic control system for a continuously variable transmission of a vehicle, comprising a dual outlet pressure pump. (Fig. 1)

Inventors:
KATO, Yuji (6-1-49, Nagatsuta Minamidai Midori-ku, Yokohama-sh, Kanagawa 18, 22600, JP)
Application Number:
JP2013/005955
Publication Date:
April 17, 2014
Filing Date:
October 07, 2013
Export Citation:
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Assignee:
MAGNA INTERNATIONAL JAPAN INC. (Yaesu Center Bldg. 5th floor, 6-6 Yaesu 1-chome, Chuo-k, Tokyo 28, 10300, JP)
International Classes:
F04C2/10; F04C2/344; F04C11/00; F04C14/02; F04C15/00; F04C15/06
Foreign References:
US20010026767A12001-10-04
US20020053829A12002-05-09
US8128377B22012-03-06
Attorney, Agent or Firm:
SONODA, Yoshitaka et al. (SONODA & KOBAYASHI, 34th Floor Shinjuku Mitsui Building, 1-1, Nishi-Shinjuku 2-chome, Shinjuku-k, Tokyo 34, 16304, JP)
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