By using two independent clutches, a DSG can achieve faster shift times and eliminates the torque converter of a conventional epicyclic automatic transmission. It was designed by BorgWarner and is licensed to the Volkswagen Group, with support by IAV GmbH.
In simple terms, a DSG automates two separate "manual" gearboxes (and clutches) contained within one housing and working as one unit. The first dual-clutch transmissions were derived from Porsche in-house development for the Porsche 962 in the 1980s.
A direct-shift gearbox ( DSG, German: Direktschaltgetriebe ) is an electronically-controlled, dual-clutch, 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 or semi-manual gear selection.
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