Evaluation of Allison Transmission FuelSense®2.0 with DynActive® Shifting for Improved Fuel Economy

Most military wheeled vehicles operate with a simplistic table-based transmission shift strategy. However, Allison Transmission Inc has created an innovative algorithm-based transmission shift strategy known as FuelSense®2.0 with DynActive® Shifting which optimizes gear selection by accounting for driver demand and vehicle load. This method of shifting has the potential to significantly improve fuel economy while only minimally degrading vehicle performance. In this study, FuelSense®2.0 with DynActive® Shifting was evaluated across three platforms which included the Family of Medium Tactical Vehicles (FMTV), and the Heavy Tactical Vehicles (HTV) Heavy Expanded Mobility Tactical Truck (HEMTT) and Palletized Loading System (PLS). The trucks were drive-cycle tested using both an environmentally controlled dynamometer laboratory and a real-world proving ground user trial.