Invention Grant
- Patent Title: Method for controlling a hydraulic system of a working machine
- Patent Title (中): 控制作业机械液压系统的方法
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Application No.: US13881759Application Date: 2010-11-01
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Publication No.: US09334883B2Publication Date: 2016-05-10
- Inventor: Bo Vigholm , Jan Karlsson , Andreas Ekvall , Kim Heybroek
- Applicant: Bo Vigholm , Jan Karlsson , Andreas Ekvall , Kim Heybroek
- Applicant Address: SE Eskilstuna
- Assignee: Volvo Construction Equipment AB
- Current Assignee: Volvo Construction Equipment AB
- Current Assignee Address: SE Eskilstuna
- Agency: WRB-IP LLP
- International Application: PCT/SE2010/000264 WO 20101101
- International Announcement: WO2012/060742 WO 20120510
- Main IPC: F15B15/18
- IPC: F15B15/18 ; E02F9/22 ; F15B11/16

Abstract:
A method is provided for controlling a hydraulic system of a working machine. The hydraulic system includes a hydraulic machine for providing hydraulic fluid to one or more actuators of the working machine. The method includes receiving a signal requesting a pump pressure from the hydraulic machine based on the load pressure of a first actuator of the one or more actuators which first actuator has the highest load pressure of the one or more actuators, discriminating the pressure request from the first actuator provided that the first actuator is stalled due to overload or geometrical limitations, and controlling the hydraulic machine to provide a pump pressure based on the load pressure of a second actuator of the one or more actuators which second actuator is in operation and has the second highest load pressure of the one or more actuators, or, if no actuator in addition to the first actuator is present and in operation, controlling the hydraulic machine to provide a predetermined idle pump pressure.
Public/Granted literature
- US20130205765A1 METHOD FOR CONTROLLING A HYDRAULIC SYSTEM OF A WORKING MACHINE Public/Granted day:2013-08-15
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