If you are wondering how the thing is tricky. The power for the front axle is taken directly from the crankshaft through a separate reduction gear, and a hydraulic pump that drives the mechanism tightens differential intelligent distribution. In this way the front wheels receive torque when required, coupling and uncoupling with the situation.
The idea is ingenious, but does not play well in the transfer of torque (at least in theory) as a provision full relay as the Nissan GT-R. In return, it is much lighter.
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