Sometimes it’s better to take the easy way.
Usually in hybrid architectures, to enable boosting and recuperation, an e-machine must be added to the transmission or engine. However, this also leads to a critical cost-benefit question. With the new Dedicated Hybrid Transmissions (DHT) we simplified our existing hybrid concepts and utilized our long-term development experience with hybridized dual-clutch transmissions. We added a strong e-machine, shifted the dynamic operation towards it while standardizing the engine operation, and reduced the number of gears.
The result is a DHT design that is considerably less complex and less expensive than an add-on solution, where the mechanical functionalities are replaced by the use of the e-motor and thus the number of physical gears and parts can be significantly reduced without changing the base technology.