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Getrag reveals two new transmission designs

Getrag has unveiled two new transmissions that the company says completes its current product portfolio in providing the industry with total coverage in terms of torque output and application size. The first design is a seven-speed dual clutch Powershift 7DCT300 unit and the second is a Hybrid Drive 7HDT300 offering.

Both of the transmissions – the hybrid is based on the DCT – use a new modular approach to development that allows Getrag to maximize standardization while matching attributes to different market requirements. The approach, says the company, has resulted in quality and economy of scale while reducing development time and program costs. Getrag CTO, Didier Lexa, added: “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-sized and compact vehicles with front-transverse layouts and maximum torque of 300Nm. It is the first transmission of a modular family of front-wheel-drive automatics that will be extended at the high end with the seven-speed transmission 7DCT500 and at the low end with the six-speed transmission 6DCT150.

The transmission’s low dry weight of 65kg 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 is a hybrid version of the 7DCT300. The transmission 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 for the other hybrid versions of the company’s planned six-speed 6DCT150 and seven-speed 7DCT500.

Getrag says that both transmissions have been designed for global markets with a consistent common-part strategy. The very high application flexibility makes it possible to adapt the transmission quickly and efficiently 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.

4 October 2012


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