Title:
HYBRID CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2013/111707
Kind Code:
A1
Abstract:
A hybrid construction machine comprises first and second main pumps, first and second supply passages, first and second circuit systems, a hydraulic motor, a motor generator, an assist pump, a joint passage which is connected to the assist pump and which is branched, first and second logic valves, and a switching valve. The switching valve switches between a state in which the assist pump connects to the second supply passage and a state in which the second main pump connects to the hydraulic motor. The hybrid construction machine is provided with a bypass passage branched from the other branch passage at a position downstream of the switching valve. The bypass passage connects to the second supply passage located downstream of the second logic valve.
Inventors:
FUKUDA SHUNSUKE (JP)
YOSHIDA NOBUYOSHI (JP)
YOSHIDA NOBUYOSHI (JP)
Application Number:
PCT/JP2013/051101
Publication Date:
August 01, 2013
Filing Date:
January 21, 2013
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
International Classes:
F15B21/14; E02F9/20; E02F9/22; F15B11/02; F15B11/17
Foreign References:
| JP2011241947A | 2011-12-01 | |||
| JPH09151488A | 1997-06-10 | |||
| JP2002339904A | 2002-11-27 | |||
| JPH09151489A | 1997-06-10 | |||
| JPS6399003U | 1988-06-27 | |||
| JP2011241947A | 2011-12-01 |
Other References:
See also references of EP 2808563A4
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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Claims: