E-Diff 3 - Ferrari 2012 F12 Berlinetta Owner's Manual

E-Diff 3

The vehicle is equipped with an electronic differential, working on
the rear axle, which continually performs a variable check on the
locking between the two axle shafts.
The electronic differential system, integrated with F1-Trac traction
control, is capable of improving:
- performance;
- directional stability of the vehicle;
- active safety even when close to grip limit;
- driving comfort and handling.
The system is based on the analysis and forecast of vehicle
performance in all possible conditions. This is done by continually
monitoring the pressure of the clutch actuator on the differential.
The input signals are the dynamic parameters of the vehicle that the
control system translates into a torque difference between the two
driving wheels.
In a curve, the electronic differential:
- maintains vehicle stability during throttle lift-off by appropriately
modulating the engine braking torque applied to the rear axle;
- controls vehicle dynamics, for maximum stability and acceleration
when exiting the curve, by locking the differential with a strategy
that considers all vehicle dynamics parameters.
To obtain these results, the electronic differential system interacts
with the F1-Trac, ESC and ABS systems, F1 gearbox and
suspension damping control.
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Safety
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