Title:
CONTROL SYSTEM OF HYBRID CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2015/045891
Kind Code:
A1
Abstract:
A control system of a hybrid construction machine is provided with a regeneration motor that rotates through a working fluid introduced from a turning circuit, a pressure detector that detects turning pressure of the turning motor or braking pressure at the time of braking operation, a switching valve for turning regeneration that, when switched to an open position through the pressure of a pilot fluid, introduces the working fluid from the turning circuit to the regeneration motor to perform turning regeneration, an electromagnetic proportional reducing valve that, when detected pressure of the pressure detector reaches a first set pressure, is switched to an open position and generates a pilot secondary pressure that switches the switching valve for turning regeneration to the open position, and a pilot switching valve that, when the pressure of the turning circuit reaches a second set pressure, is switched to an open position and passes a pilot fluid that is for switching the switching valve for turning regeneration to the open position.
Inventors:
KAWASAKI HARUHIKO (JP)
EGAWA MASAHIRO (JP)
EGAWA MASAHIRO (JP)
Application Number:
PCT/JP2014/074129
Publication Date:
April 02, 2015
Filing Date:
September 11, 2014
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
International Classes:
F15B20/00; E02F9/20; F15B21/14
Foreign References:
| JP2009281525A | 2009-12-03 | |||
| JPH10152866A | 1998-06-09 | |||
| JP2005140143A | 2005-06-02 | |||
| JP2012082953A | 2012-04-26 |
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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