ZF 6-speed automatic transmission for passenger cars

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ZF 6-speed automatic transmission for passenger cars

Scherer, H.

The ''myTronic ⁶'' 6 HP 26 represents a real milestone in the passenger vehicle drive train technology. An automatic transmission was developed which has significant advantages in all major areas compared to the ZF 5 HP 24 transmission. The Lepelletier system provides an overall ratio of 6 without increasing the design complexity. The transmission uses fewer parts, has less mass and is smaller in transmission length to comparable 5 speed transmissions. The higher torque capacity up to 600 Nm enlarges the application range and together with the other two transmission types, the new 6 speed family covers a whole range of engines from 4 to 12 cylinder including diesel engines. With the increased overall ratio and improved transmission efficiency, the major benefits are in fuel economy as well as in driving performance. All the improvements and the convincing technical data of the 6 speed transmissions will help to enlarge their market share especially in Europe within the next few years especially in north-south installation in front wheel, rear wheel and all wheel driven cars in the upper torque segment. The innovative 6 speed transmissions fit perfect into the corresponding vehicle segment. With a variety of comfort functions like shift-by-wire, the transmission not only helps to improve the power train, but it also enables to come to new design and operating concepts for furture cars. With this new 6 speed family, ZF is well prepared for the future requirements of different vehicle applications.