New sports transmission for rear-wheel and all-wheel drives

The new 8-speed dual clutch transmission is available for front-longitudinal configuration in four different variants (standard, all-wheel drive, hybrid, all-wheel hybrid) in three torque classes, to a maximum 1,000 Nm. The torque class is defined by the configuration variety of the dual-clutch modules, with the basic transmission and gear set always remaining the same. This is also true for the transmission hydraulics, shift system, parking lock and control unit, including software.

To make the 8DT basic transmission as small and compact as possible, a new gear set concept with two countershafts and one summation shaft was constructed. The fixed gears, which are all located on the transmission input shafts, can be used several times, resulting in less wheel levels, making the basic transmission significantly shorter in length. This was the only way to maintain the required length of the hybrid module and integrate it into the limited installation space. This gear set architecture offers another advantage. Based on the modular concept, it is not only suitable for front-longitudinal applications but will also be able to cater for other driveline configurations.