ARRANGEMENT AND A METHOD FOR CONTROLLING A WORK VEHICLE

摘要

Method and arrangement for controlling a work vehicle that includes a hydraulic system ( 22 ) having at least one pump ( 18,180 ) and at least one actuator ( 4,5,8,9,10 ) operatively driven by hydraulic fluid delivered from the pump and at least a first pump ( 18 ) is a variable displacement pump. The system ( 22 ) is of the load-sensing type in that pump displacement is controlled by a pilot pressure representing a load exerted on the system. The arrangement includes means ( 63 ) for reducing the pilot pressure delivered to the first pump ( 18 ) so that the first pump displacement is regulated down when there is a need for limiting hydraulic power consumption.