Powershift AMT

DTI’s Powershift AMT technology uses a brake-controllable planetary gear module as a short term torque bypass clutch that is activated (only) during gear-shifting of an AMT (Automated Manual Transmission). One may compare the functionality of the brake-controllable planetary to a “limited slip differential”, which controls the distribution of left and right drive shaft torque using a slip-controllable clutch.
The functionality of the brake-controllable planetary gearset can be used to fill up torque gaps that occur when shifting an AMT from one gear to the next. This leads to much higher driving comfort and because shifting in itself is not penalizing the performance of the car, rapid upshifting in city traffic saves up to 5% of fuel compared to an AMT and even 15% compared to a traditional automatic transmission!
The installation of the brake-controlled planetary gear module in the clutch-housing of the AMT does not impact the length of the AMT at least when it will be equipped with a central slave cylinder for actuation of the clutch. The combination of an AMT and the brake-controllable planetary gearset is termed “Powershift AMT”.
The main benefit of the Powershift AMT is that a standard MT can be “converted” gradually towards near-DCT functionality. In conclusion, the powershift module appears to be a very lucrative step when producing the MT, AMT and Powershift AMT systems on the same production line.

Download Powershift AMT leaflet