Drivetrain innovations (DTI) baised in Endhoven in Netherlands, have developed 'powershift AMT' system, which retains all the advantages of an AMT, while removing its biggest drawback that is interruption of shifting.



  • Powershift module consists of a brake and an epicyclic gear set which is concentric to the input shaft and clutch actuation cylinder. 
  • The epicyclic gear set is connected to the engine, the transmission output gear and the slip controllable dry brake system. 
  • The module does not need two concentric input shafts, so all the current MTs can be used only with minor changes. 
  • Its main advantages claimed over the dry dual clutch transmission (DCT) are unchanged clutch inertia, unchanged normally closed main clutch, non sequential power shifting, non rotating drum brake actuation and effective cooling of the brake pressure plates by the transmission housing.
  • The system is particularly interesting for small to medium size cars, for which more AMTs are being used. 
  • The main disadvantage of power shift is the introduction of some more rotating parts of the epicyclic gear set, which slightly lower the transmission efficiency in lower gears.