Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/100613
Kind Code:
A1
Abstract:
A load sensing valve maintains the differential pressure at a set pressure by controlling a regulator depending on the differential pressure between the hydraulic pump discharge pressure and hydraulic actuator load pressure. The set pressure control device controls the set pressure. When a prescribed determination condition that includes non-operation of a work device is satisfied, the controller controls the set pressure control device so as to reduce the set pressure more than is the case when the work device is being operated.
Inventors:
NAKASHIMA AKIRA (JP)
ODA ISAMU (JP)
ODA ISAMU (JP)
Application Number:
PCT/JP2019/042802
Publication Date:
May 22, 2020
Filing Date:
October 31, 2019
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
E02F9/22; F15B11/00; F15B11/02
Foreign References:
| JP2003314501A | 2003-11-06 | |||
| JP2005344766A | 2005-12-15 | |||
| JPH04285304A | 1992-10-09 |
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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