METHOD OF CONTROLLING A WORK MACHINE ACCORDING TO A DRIVETRAIN LOAD-ADJUSTED ECONOMY MODE AND CONTROL SYSTEM THEREOF

摘要

A method of selecting an economy operating mode of a work machine includes detecting a current throttle position of a throttle control and a current track speed with a speed sensor, and determining a current drivetrain load of the machine as a function of motor torque, a drivetrain ratio, a drivetrain mechanical efficiency, a final drive windage factor, and a rolling radius. The method includes decreasing the current throttle command if a ratio of the current drivetrain load to an available drivetrain load is less than a load threshold. A transmission ratio of the transmission is increased by the controller to an increased transmission ratio if the ratio of the current drivetrain load to the available drivetrain load is less than the load threshold.