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A direct-shift gearbox (DSG, German: Direktschaltgetriebe [1]) [2] [3] is an electronically controlled, dual-clutch, [2] multiple-shaft, automatic gearbox, in either a transaxle or traditional transmission layout (depending on engine/drive configuration), with automated clutch operation, and with fully-automatic [2] or semi-manual gear selection.
The Ford PowerShift are 6 and 7-speed dual-clutch automatic transmissions, produced for the Ford Motor Company. [1] The 6 speed PowerShift gearboxes were built by Getrag Ford Transmissions, a joint-venture with Getrag,. [2] PowerShift improves fuel efficiency by as much as 10 percent when compared to a conventional automatic transmission. [1]
An early example of a semi-automatic motorcycle transmission was the use of an automatic centrifugal clutch in the early 1960s by the Czechoslovakian manufacturer Jawa Moto. [83] Their design was used without permission in the 1965 Honda Cub 50 , which resulted in Jawa suing Honda for patent infringement and Honda agreeing to pay royalties for ...
DCT transmissions have been used on vehicles sold by Alfa Romeo, Volkswagen, Audi, Tata Motors, SEAT, Skoda, and Bugatti, mostly marketed using the term Direct-Shift Gearbox (except for Alfa Romeo, which has used the term TCT, also Tata Motors uses the term DCA (Dual Clutch Automatic) and Audi, which has also used the term S-Tronic). [7] [43] [24]
Mercedes-AMG developed the 7-speed MCT "Multi Clutch Technology" planetary automatic transmission. The MCT transmission is essentially the 7G-Tronic automatic transmission without a torque converter. Instead of a torque converter, it uses a compact wet startup clutch to launch the car from a stop and also supports computer-controlled double ...
A transmission (also called a gearbox) is a mechanical device which uses a gear set—two or more gears working together—to change the speed, direction of rotation, or torque multiplication/reduction in a machine. [1] [2] Transmissions can have a single fixed-gear ratio, multiple distinct gear ratios, or continuously variable ratios. Variable ...
Toyota’s marketing name for the transmission is "Direct Shift – 8AT 8-speed automatic transmission". [10] [11] In contrast to the UB 80E/F transmission, which was developed by Aisin AW for Toyota, the UA 80E/F was developed in a joint venture between Toyota and Aisin AW. Due to its worldwide application, development was carried out in a ...
The transmission debuted on the E 350 BlueTEC in 2013, [1] and successively replaced both the 7-speed 7G-Tronic (PLUS) transmission and the 5-speed 5G-Tronic transmission. It includes versions for a maximum input torque of 1,000 N⋅m (738 lb⋅ft). [2] After the 5G- and 7G-Tronic, this is the 3rd generation of modern automatic transmissions.