Eaton Corp. offers a range of automated manual transmissions (AMTs) spanning medium- and heavy-duty truck classes. On the heavy-duty side is the Fuller UltraShift LHP (linehaul high performance) transmission designed for applications where both low-end and high-end performance, as well as excellent ratio coverage, is required to handle varying terrain and load conditions. Based on the Fuller RT transmission, the UltraShift LHP provides fully automatic two-pedal operation, and is capable of handling torque capacities up to 1,750 lbs.-ft. and loads up to 110,000 lbs. GCW. Next down the line is the UltraShift HV (highway value) AMT, designed to share technologies and electronic components with its Fuller UltraShift brethren. The HV is designed for Class 6 and 7 vehicles with diesel engines in the 195 to 260 hp. range, and is capable of handling torque capacities up to 660 lbs.-ft. and loads up to 33,000 lbs. GVW.
Key features of the UltraShift HV transmission include a “Hill Assist” function that automatically minimizes rollback on up to 10% grades while the operator makes the transition from the brake pedal to the accelerator.
The new UltraShift Plus transmission features automated clutch technology and intelligent shift selection software that employs grade sensing, weight computation, and driver throttle commands. All UltraShift Plus transmissions are automated with the use of a new self-adjusting electronic clutch actuator and feature Hill Assist; six- and eight-bolt power take off (PTO) availability at no extra cost; automatic, manual and low-mode selections; and a creep feature for significantly improved maneuverability with continuous low-speed control.
The UltraShift Plus comes in several different versions: Linehaul Active Shifting, Multipurpose High Performance and Multipurpose Extreme Performance for highway operations, along with Vocational Construction Series, Vocational Multipurpose Series and Vocational Extreme Performance.