Title:
HYBRID WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2011/145432
Kind Code:
A1
Abstract:
A controller determines whether or not an operation valve which controls the supply of pressure fluid from a main pump to an actuator is in a neutral position, detects the input power of a hydraulic motor which rotates with the return oil from the actuator, and narrows the opening degree of a proportional solenoid throttle valve if the operation valve is in a neutral position and the input motive power of the oil hydraulic motor exceeds a first threshold value.
Inventors:
KAWASAKI HARUHIKO (JP)
EGAWA MASAHIRO (JP)
EGAWA MASAHIRO (JP)
Application Number:
PCT/JP2011/059967
Publication Date:
November 24, 2011
Filing Date:
April 22, 2011
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; E02F9/22; F15B11/00
Foreign References:
| JP2009235717A | 2009-10-15 | |||
| JP2009236191A | 2009-10-15 | |||
| JP2007327527A | 2007-12-20 | |||
| JP2005012900A | 2005-01-13 |
Attorney, Agent or Firm:
GOTO, MASAKI (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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Claims: