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Title:
HYDRAULIC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/105559
Kind Code:
A1
Abstract:
A hydraulic system comprising: a cylinder having the interior of a tube partitioned by a piston into a first pressure chamber and a second pressure chamber; a first bidirectional pump connected to the first pressure chamber by a first supply/discharge line; a second bidirectional pump connected to the second pressure chamber by a second supply/discharge line and coupled to the first bidirectional pump so as to be capable of transmitting torque; a relay line connecting the first bidirectional pump and the second bidirectional pump such that hydraulic fluid discharged from either the first bidirectional pump or the second bidirectional pump is guided to the other; and an electric motor that drives either the first bidirectional pump or the second bidirectional pump. At least either the first bidirectional pump or the second bidirectional pump is a variable-capacity pump capable of arbitrarily variable discharge capacity per rotation thereof.

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Inventors:
KONDO AKIHIRO
MITSUI HIROAKI
TOYOTA TOSHIHISA
MIBU KOKI
NAKATSUJI TAKASHI
Application Number:
PCT/JP2019/044915
Publication Date:
May 28, 2020
Filing Date:
November 15, 2019
Export Citation:
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Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F15B11/044; F15B11/02; F15B11/08
Foreign References:
JPH07127606A1995-05-16
JPH11117907A1999-04-27
JP2002021807A2002-01-23
JP2002048105A2002-02-15
JPH112212A1999-01-06
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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