http://www.autodata.ru/st/02_sub/sub.htm

"Doxlas" <doxlas@gmail.com> wrote in message 
news:hkbdjq$u4f$1@trimpas.omnitel.net...
> Nu ten idomi sistema - ir mova ir tarpashinis diffas. Bet kaip suprantu 
> vistiek sukimo momenta i galinius ratus valdo kompas per mova. Centrinis 
> diffas reikalingas skiringam momento skirstymui kai mova jau pajunge 
> galini tilta.
>
> Variable Torque Distribution (VTD):
>
> It has the MPT (multi plate transfer) clutch aka VTC as found in the 
> Active AWD system but it also has a planetary-type center differential and 
> a Rear LSD. The center differential provides the ability to have a default 
> torque split of 45/55 front/rear (as against the 90/10 split in Active 
> AWD). In every other aspect it is similar to the Active AWD in that it 
> anticipates wheel slippage instead of reacting to it as in the case of a 
> MT. We can say the the VTD is an advanced Active AWD system
>
> Available with 4EAT on Impreza WRX
> Available with 5EAT on Outback XT, Outback 3.0R, Legacy GT
>