German transmission giant Getrag introduced two new transmissions: the seven-speed dual clutch transmission Powershift 7DCT300; and the Hybrid Drive 7HDT300.
At its fifth biennial Drivetrain Forum, German transmission giant Getrag presented two new transmissions: the seven-speed dual clutch transmission Powershift 7DCT300; and the Hybrid Drive 7HDT300. Both use a modular approach that allows the company to maximize standardization while meeting the requirements of different markets.
Getrag Chief Technology Officer Didier Lexa said, “We have developed each module with enough flexibility and breathing space to make it easily adaptable to the different attributes required by different local markets. Benchmarking the 7DCT300 against CVTs and automatics has made the transmission best-in-class for launch, fuel economy, NVH, cost and ease of hybridization.”
The 7DCT300 is designed for use in mid-size and compact vehicles with front-transverse layouts and maximum torque of 300 Nm. It is the first of a family of front-wheel-drive automatics which will be extended to 500 Nm at the high end with the seven-speed 7DCT500 and to 150 Nm at the low end with the six-speed 6DCT150. The transmission’s low dry weight of approximately 65 kg makes it compatible with future lightweight vehicle platforms. The gearshift actuation uses electromechanical shift-drum technology, making it possible to add start/stop functionality without hardware changes.
The 7HDT300, a hybrid version of the 7DCT300, offers scalable hybridization, from mild hybrids to plug-in architectures capable of pure electric driving. Getrag’s modular approach means that the transmission integrates the same type of high-speed e-motor as the other hybrid versions of the company’s planned six-speed 6DCT150 and seven-speed 7DCT500.
Both transmissions have been designed to be quickly adaptable to customer requirements by means of minimal and often standardized adjustments. The main functional elements such as clutch, gearshift, actuators, control unit and synchronization are designed for various applications as common subsystems.