METHOD FOR CONTROLLING A WORKING MACHINE

Title:

METHOD FOR CONTROLLING A WORKING MACHINE

Document Type and Number:

WIPO Patent Application WO/2013/027873

Kind Code:

A1

Abstract:

A method, an electronic control unit, a vehicle control system, and a working machine for controlling a working machine provided with a bucket as a work implement by which a lifting force can be exerted on an object such as a gravel pile, and at least one ground engaging element by which a traction force can be exerted on the same object, wherein the lifting force is an upward-directed lifting force experienced by the object, is provided. The method includes receiving a state input indicative of a current bucket state, the bucket height being a parameter of the current bucket state, determining a lifting force eliminating speed of the power source ("LFES") at the current bucket state, the LFES being the speed at and above which no lifting force could be achieved considering a reaction force acting on the bucket caused by the traction force, and controlling the speed of the power source not to reach the LFES in order that at least some lifting force could be achieved. An electronic control unit (ECU) adapted to perform any of the method steps is provided, as a vehicle control system including the ECU, and a working machine including the vehicle control system.

Inventors:

FILLA RENO (SE)
SKOGH LENNART (KR)

Application Number:

PCT/KR2011/006240

Publication Date:

February 28, 2013

Filing Date:

August 24, 2011

Export Citation:

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Assignee:

VOLVO CONSTR EQUIP AB (SE)
FILLA RENO (SE)
SKOGH LENNART (KR)

International Classes:

E02F3/43; E02F9/20; E02F9/22

Domestic Patent References:

WO1999027196A1	1999-06-03
WO2006098645A1	2006-09-21

Foreign References:

EP0270674A1	1988-06-15
US20040117092A1	2004-06-17
US20010056319A1	2001-12-27

Other References: