Title:
CONTROL DEVICE FOR HYDRAULIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/151275
Kind Code:
A1
Abstract:
For a hydraulic machine such as an excavating/revolving work machine having a configuration wherein the capacity of a hydraulic travel motor can be switched, the objective is to ensure work precision by avoiding the effect of acceleration of the travel speed in a large-capacity-setting state of a hydraulic motor primarily used for work travel, in regard to work travel in a low-capacity-setting state of the hydraulic motor. This control device for a hydraulic machine, which is configured so as to correct a target value for the ratio of a supplied flow rate with respect to a requested flow rate for each hydraulic actuator in accordance with a change in the rotation speed of the engine when the actuators are driven, is configured so as to correct the target value for the ratio of the supplied flow rate with respect to the requested flow rate for each hydraulic actuator in accordance with the switching of the capacity of a hydraulic travel motor included among the multiple hydraulic actuators.
Inventors:
SHIROUZU TAKAYUKI (JP)
MATSUYAMA HIROSHI (JP)
MATSUYAMA HIROSHI (JP)
Application Number:
PCT/JP2018/005576
Publication Date:
August 23, 2018
Filing Date:
February 16, 2018
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
F15B11/00; E02F9/22; F15B11/02; F15B11/042; F15B11/16
Foreign References:
| JP2003184816A | 2003-07-03 | |||
| JPH07139510A | 1995-05-30 | |||
| JPH0276904A | 1990-03-16 | |||
| JP2011247301A | 2011-12-08 | |||
| JPH10338947A | 1998-12-22 |
Other References:
See also references of EP 3584449A4
Attorney, Agent or Firm:
YANO INTERNATIONAL PATENT ATTORNEYS OFFICE, P.C. (JP)
Download PDF: