Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/070244
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a work machine that realizes good operability and controllability by precisely controlling the pressure of an actuator without causing a sudden increase in pressure or hunting when the actuator begins to operate. To achieve this purpose, a controller calculates a pump first target flow rate for minimizing the difference between an actuator target pressure and the actuator pressure, calculates a pump second target flow rate for minimizing the difference between an actuator absorption flow rate and a pump flow rate, calculates a pump final target flow rate on the basis of the pump first target flow rate and the pump second target flow rate, and controls a hydraulic pump according to the final target pump flow rate.
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Inventors:
KUMAGAI KENTO (JP)
AMANO HIROAKI (JP)
KANEHAMA MITSUHIKO (JP)
ITOU RYOUSUKE (JP)
IMURA SHINYA (JP)
NISHIKAWA SHINJI (JP)
AMANO HIROAKI (JP)
KANEHAMA MITSUHIKO (JP)
ITOU RYOUSUKE (JP)
IMURA SHINYA (JP)
NISHIKAWA SHINJI (JP)
Application Number:
PCT/JP2023/028804
Publication Date:
April 04, 2024
Filing Date:
August 07, 2023
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
F15B11/02; E02F9/22; F15B11/028
Foreign References:
| JP2022079112A | 2022-05-26 | |||
| JP2020133705A | 2020-08-31 | |||
| JPH08128406A | 1996-05-21 | |||
| US20170211597A1 | 2017-07-27 |
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF:
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