Drive control method and system for operating a hydraulic driven work machine

摘要

A system and a method for operating a hydraulic driven work machine including a hydraulic travel motor having a variable displacement is provided, wherein a flow of hydraulic fluid generated by a hydraulic pump is provided to the travel motor and wherein a control valve is provided for controlling the flow of hydraulic fluid from the hydraulic pump to the travel motor. The hydraulic pump is provided with a hydraulic control depending on a load signal generated by the travel control valve and the travel motor is provided with an electric control according to a desired driving behavior.

主权项

1. A method for operating a hydraulic driven work machine comprising a hydraulic travel motor having a variable displacement, wherein a flow of hydraulic fluid generated by a hydraulic pump is provided to the travel motor and wherein a control valve is provided for controlling the flow of hydraulic fluid from the hydraulic pump to the travel motor in an open loop, closed center load sensing hydraulic system, wherein the hydraulic pump is hydraulically controlled depending on a load signal generated by the travel control valve and the travel motor is electrically controlled according to a desired driving behavior of the work machine, wherein the displacement of the travel motor is continuously adjustable between a maximum displacement and a minimum displacement, and adjustability of the travel motor's displacement is independent of an actual pressure in the travel motor.