Title:
CONTROL DEVICE FOR HYBRID CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2010/128645
Kind Code:
A1
Abstract:
A control device for a hybrid construction machine is provided with a regulator which performs control in such a manner that the lower the pilot pressure in a pilot flow path, the greater the tilt angle of a variable displacement pump. When determining that all the operation valves for controlling the flow rate of discharge oil which is led to each actuator from the variable displacement pump are at the neutral position, a controller sets a solenoid valve to an open position to supply the discharge oil from the variable displacement pump to a hydraulic motor for recovery and sets a pilot-operated flow path switching solenoid valve to a shutoff position to reduce the pilot pressure, which is led to the regulator through the pilot flow path, by means of a pressure reducing valve.
Inventors:
KAWASAKI HARUHIKO (JP)
EGAWA MASAHIRO (JP)
EGAWA MASAHIRO (JP)
Application Number:
PCT/JP2010/057637
Publication Date:
November 11, 2010
Filing Date:
April 22, 2010
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
KAWASAKI HARUHIKO (JP)
EGAWA MASAHIRO (JP)
KAWASAKI HARUHIKO (JP)
EGAWA MASAHIRO (JP)
International Classes:
F15B21/14; E02F9/20; F15B11/00
Domestic Patent References:
| WO1994004828A1 | 1994-03-03 |
Foreign References:
| JP2009287745A | 2009-12-10 | |||
| JP2009287344A | 2009-12-10 | |||
| JP2005140143A | 2005-06-02 | |||
| JP2003049810A | 2003-02-21 | |||
| JPH09317703A | 1997-12-09 | |||
| JPH06117409A | 1994-04-26 |
Attorney, Agent or Firm:
GOTO, MASAKI (JP)
Masaki Goto (JP)
Masaki Goto (JP)
Download PDF:
Previous Patent: METHOD FOR PRODUCING PROPYLENE
Next Patent: IMAGE PROCESSING DEVICE, METHOD, AND PROGRAM
Next Patent: IMAGE PROCESSING DEVICE, METHOD, AND PROGRAM