Issue: Apr 2016


Automatic transmissions contribute to fuel economy



by James Hilton

In the 80 years since Getrag produced its first clutches the technology has evolved from manual transmissions to today’s self-changing systems which can be more fuel-efficient than a manual transmission.

A combination of intelligent software and lower energy requirements for the shifting of the gears by modern automatic gearboxes allow the engine management system to ensure that the power train is operating at maximum efficiency wherever possible. Depending on the design of the vehicle, Getrag dual-clutch transmissions (DCT) can outperform drivers with stick shifts, according to the company.

It is in the process of introducing its 6DCT200 and 7DCT300’s modular DCT gearboxes, which are available in conventional and mild to plug-in hybrid models. In addition the company is showcasing its new MTI-NG inline manual transmission with up to seven speeds and an all-new global MX65 modular MT 5/6 speed transmission at selected trade expos.

Automotive Industries (AI) asked Getrag Chief Executive Officer Mihir Kotecha how significant 2015 has been for Getrag in terms of new product launches.

Kotecha: We had the first launch of the 7DCT300 in Europe, which will be followed by the use of the technology in more than 100 new applications with various customers globally over the next three years.

AI: How has Getrag managed to ride out the financial crisis of the past few years to emerge stronger?

Kotecha: We have achieved this success through a combination of innovative and strong products developed and produced by dedicated and passionate people. Getrag continues to offer technology to support our well-recognized brand reputation and excellent global customer base.

AI: What has helped you expand globally?

Kotecha: Through a combination of supplying the products and technology the market needs and strong joint venture partners. Getrag entered the Chinese market in 2006 through the establishment of the Getrag (Jiangxi) Transmission Company, a

joint venture between the Jiangling Motor Company and Getrag. In the same year Getrag opened a plant for the production of dual clutch transmissions and motorbike transmissions in Kechnec, Slovakia. This was followed by the opening of a plant in Irapuato, Mexico, in 2010, and in 2012 a second Chinese joint venture company, Dongfeng Getrag Transmissions, was formed in partnership with the Dongfeng Motors Company.

AI: What are some of the challenges in setting up in emerging economies like China?

Kotecha: The first is finding local suppliers that can manufacture the quality parts we need. We have also faced challenges in the transfer of knowledge to the operations in China, while having to meet tight deadlines resulting from short product life-cycles.

AI: What are some of the future global expansions planned by Getrag?

Kotecha: Our focus is now on India and increasing Getrag’s global footprint. We are also working hard at ensuring that our technology will remain relevant after 2025.

AI then asked Chief Technology Officer Didier Lexa what makes the 7HDT300 and 6DCT200 such innovative technologies.

Lexa: For the 7HDT300 it is the ability to package the e-machine in a very smart

manner within the baseline transmission. This results in the same package size as the baseline. We also offer drivability in three modes: 100% electrical, hybrid and with combustion engine. In addition to that the e-machine is scalable from 48V/15kw up to 400V/75kw. We can support any type of driving: boost, sailing and torque-assist, to name a few.

Technically, the Getrag 7HDT300 is the hybrid version of the PowerShift 7DCT300, a seven-gear transmission with a nested wet dual- clutch, electromechanical actuation of the shifting system and electro-hydraulic dual-clutch actuation. The e-machine version of the 7HDT300 is scalable depending on the desired level of hybridization. Thanks to its electric actuation, the 7DCT300 dual-clutch transmission is ready for automatic clutch and gear actuation.

It is compatible for a start/stop system, as well as for an extended sailing function, in which the internal combustion engine is declutched and the vehicle rolls freely on its wheels. Furthermore, the existing electric actuation allows for an easy hybridization of



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