[Tejas Ingle]

Originally Posted by Ashley2

In Automatic transmissions, there is no clutch and gear shifts automatically.

So it is the automated manual gearbox with a new name. These are conventional gearboxes controlled by control unit instead of manual shifting.

Originally Posted by Mpower

Of the 3, which style is the I-shift? and is it by ZF?

Most probably, Pneumatic.

Originally Posted by AlphaKilo

I-Shift is I believe a patented technology from Volvo. Not sure though!

ishift - I-Shift : Volvo Trucks

http://www.volvotrucks.com/SiteCollectionDocuments/VTNA_Tree/ILF/Products/Powertrain/i-shift_brochure_050510. pdf

This tech is used widely and is not patented by Volvo. If Volvo has introduced some new system in I-shift, then that system might be patented.