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Dedicated Hybrid Transmission – DHT
Within the study of DHT concept design, PUNCH Powerglide has already registered several patents.
This type of hybrid transmission is especially designed for hybrid vehicles. It proposes speeds designed for the heat engine and others for the electric motor which is fixed on the transmission side. In order to reduce the cost, weight and footprint of the transmission, the number of speeds (5 for the heat engine and 2 for the electric motor) is the strict minimum required to ensure optimum energy efficiency in each mode as well as driving performance and comfort equal to the current automatic gearboxes.
This dedicated hybrid transmission concept will correspond to the second step towards hybridization, once the investment into new technology is justified by sufficient production volumes.