5.6.2 BMW X1
This car has a longitudinally located engine with a gearbox. Behind the gearbox there is a transfer case with a chain drive (a Morse chain is installed). From it a cardan gear is brought to the rear axle, where there is a regular symmetric differential. The engine thrust is transmitted to the front axle through an electronically controlled multi-disk clutch. Thus, under normal conditions, the car is rear-wheel drive, and as soon as there is a need for the front axle, the electronics "give the command", the clutch discs start closing and the traction is transmitted to the front axle.
2 MB