Title:
VALVE SYSTEM, WORK MACHINE, VALVE CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/065455
Kind Code:
A1
Abstract:
A valve system (8) comprises a magnetic pilot valve (33) and a controller (23). The magnetic pilot valve (33) adjusts a flow rate of hydraulic fluid for performing a steering operation of a wheel loader (1). On the basis of a target flow rate (Ft) corresponding to an input operation command and a change amount (Ft_change) in the target flow rate (Ft), the controller (23) determines a command signal to the magnetic pilot valve (33) that determines a command flow rate (Fc) of the hydraulic fluid. When a reversing operation command that causes the wheel loader (1) to move in the direction opposite from a direction in which the steering is moving is received, the controller (23) controls the change amount in accordance with the magnitude of the reversing operation command.
Inventors:
TAKENAKA YUITA (JP)
TERANISHI YUICHI (JP)
TERANISHI YUICHI (JP)
Application Number:
PCT/JP2020/034792
Publication Date:
April 08, 2021
Filing Date:
September 14, 2020
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
B62D5/09; B62D1/14
Domestic Patent References:
| WO2018199342A1 | 2018-11-01 |
Foreign References:
| JP2015123835A | 2015-07-06 | |||
| US20090084103A1 | 2009-04-02 | |||
| JP2006335094A | 2006-12-14 | |||
| US9248854B2 | 2016-02-02 |
Other References:
See also references of EP 3988426A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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