Eaton Dual-Clutch Transmissions
Power management company Eaton has introduced Procision, a new line of medium-duty dual-clutch transmissions that delivers 8 to 10 percent better fuel economy than a similarly equipped vehicle with a torque converter automatic.
Scheduled to be available in the North American market midyear in 2015 and available globally in the future, the new seven-speed transmissions feature a dual-clutch design and electronic shifting that uses grade, vehicle weight, and throttle input to provide optimal fuel efficiency and smooth, continuous delivery of torque to a vehicle’s wheels under all shift conditions.
Eaton employed the dual-clutch technology to allow for more efficient acceleration from a stopped position, and to optimize shift points that will efficiently get to the highest gear. Gear changes are made by swapping the engine torque between clutches with the next gear preselected.
The dual-clutch module is fully contained within the transmission, hydraulically controlled and oil cooled for extended life. A five-spring damper is used to control torsional vibrations and is fully sealed to eliminate contamination.