Transmission Models & Technologies

CVT, DCT, Tiptronic, Powershift and Other Transmission Technologies

Technical information on automatic transmission models, gearbox families, design features, control systems, hydraulic layouts, electronic technologies, and transmission-specific engineering solutions. This section helps rebuilders, transmission specialists, repair shops, and parts professionals understand how different transmission units are designed, identified, serviced, and supported with the right components.

Tiptronic is a trade name of the manual gear shifting function (mode), which is implemented in the automatic transmissions. In the world of the automobile industry the name Tiptronic is used to define automatic transmissions of a specific design and control method regardless of the actual developer and producer of the transmission.
Nowadays Extroid CVTs are commonly known as “toroidal” due to the fact that the working surface of driving and driven discs in this transmission has the form of a torus. Extroid CVT is not a V-belt transmission, but a friction drive CVT.
This article contains the information about the most popular automatic transmissions. We will review the most common problems encountered in automatic transmissions, present the most reliable gearboxes and warn about troublesome transmission solutions. Moreover, descriptions of transmissions are supplemented by images and different videos containing some general information on transmissions and their components, typical problems and repair tips.