Patent ID: 8694218

Claim:
A method of selecting a shift schedule for a transmission in a vehicle, the transmission including an output speed sensor and a controller, the method comprising: storing a plurality of predefined threshold values in the controller, wherein the plurality of threshold values includes an output speed threshold, a throttle threshold, and an output acceleration threshold; controllably shifting the transmission according to a first shift schedule; measuring input speed with an input speed sensor; measuring output speed with the output speed sensor; comparing the measured output speed to the output speed threshold; receiving a current throttle percentage with the controller and comparing the current throttle percentage to the throttle threshold; calculating a current output acceleration and transmission gear ratio with the controller; enabling the controller to evaluate a set of conditions including whether (a) the measured output speed is greater than the output speed threshold, (b) the current throttle percentage is greater than the throttle threshold, and (c) the measured input speed is less than a predefined input speed threshold, where the predefined input speed threshold is one of the plurality of predefined threshold values stored in the controller; and selecting and implementing a second shift schedule if the controller is enabled and at least conditions (a)-(c) are satisfied, where the second shift schedule corresponds to an economy shift schedule or a performance shift schedule.