Patent ID: 8972129
Filing Date: 2015-03-03
Classification: B60W,B60Y,F16H

Abstract:
1. A method of providing an optimum reverse operating condition for a track type tractor, the method comprising: providing a drawbar pull vs. track speed curve by gear for known drawbar pull values; receiving a slope value from a slope sensor of the track-type tractor; calculating a reverse direction resistive force using the slope value received from the slope sensor; calculating a reverse direction track speed based on the drawbar pull vs. track speed curve and the reverse direction resistive force; calculating a track slip based on a pull-slip curve and the reverse direction resistive force; using the track slip and the reverse direction track speed, calculating a calculated ground speed for each available reverse gear; calculating an optimum reverse speed; determining a reverse gear with a greatest calculated ground speed; normalizing a current reverse speed with the optimum reverse speed to produce a normalized current reverse speed; and displaying the normalized current reverse speed in relation to the optimum reverse speed.