Quick and Easy: How does a Torsen Diff work exactly?
A Torsen differential is a type of limited slip differential that is used primarily in road cars, and it has most of the advantages of a typical clutch pack LSD, with very few of the drawbacks.
One of the main drawbacks is that, a Torsen differential will stop completely if one wheel is off the ground; this is because the internal gearing requires a minimal amount of traction on both wheels. Hence this type of differential isn’t used for off road vehicles.
The internal gearing of it consists of two worm gear and worm wheel sets, each attached to a half shaft.
The rest is explained in the video below.