LOAD CONTROL FOR A MACHINE WITH A DUAL PATH ELECTRONICALLY CONTROLLED HYDROSTATIC TRANSMISSION

摘要

A method of managing engine load by adjusting the pump and motor displacements of a dual path electronically controlled hydrostatic transmission utilizes the difference between the reference and actual engine speeds, the temperature of the working fluid for the dual path electronically controlled hydrostatic transmission, the engine governor droop value, the vehicle speed and lookup tables to determine pump and motor command adjustment factors associated with specific engine loading conditions.

主权项

1. A method for controlling a machine with a dual path electronically controlled hydrostatic transmission, the method comprising:
providing a machine having an engine and a dual path electronically controlled hydrostatic transmission, the hydrostatic transmission including an input device and a drive system, the drive system having at least one pump and at least one motor, the input device providing drive commands for the at least one pump and at least one motor of the drive system; modifying the drive commands for the at least one pump and the at least one motor of the drive system based on at least one measured machine operating parameter; and applying the modified drive commands to the at least one pump and the at least one motor of the drive system to prevent the engine from stalling.