5.6.1.b Second scheme
Second layout: permanent four-wheel drive without transfer case. Audi Company presented the best solution to the world. The gearbox contains a Torsen limited slip differential, which, under normal operating conditions, divides the thrust from the engine between the front and rear axles of the vehicle in half. As soon as one of the axles starts slipping, the torque will instantly start redirecting to the axle, the wheels of which have the best grip (are in the best grip conditions).
Note
Torsen (Torque Sensing) is a limited slip differential, which allows the torque to be redirected exclusively mechanically to one or another axle/wheel, depending on the operating conditions. It can be symmetrical and asymmetrical.
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