E-Diff Electronic Differential
One of the technical features that sets the F430 apart is the or electronic differential.
This solution has been used for years in F1 single-seaters and has been continuously developed and refined, effectively transferring massive torque levels to the track under extremely high cornering g-forces. The E-Diff is now standard equipment on the F430 - the first time that a production car has been equipped with such a sophisticated system for high-performance roadholding. On the track, the E-Diff guarantees maximum grip out of bends, eliminating wheel spin.
On the road it is a formidable technological refinement that improves roadholding. This system is available both on the F1-paddle shift version as well as on the manual gearbox model and consists of three main subsystems:
- a high-pressure hydraulic system,shared with the F1 gearbox (if present);
- a control system consisting of valve, sensors and electronic control unit;
- a mechanical unit housed in the left side of the gearbox.
Torque is continuously distributed between the wheels via two sets of friction discs (one for each driveshaft) controlled by a hydraulic actuator. The amount of torque actually transmitted to the driven wheels depends on driving conditions (accelerator pedal angle, steering angle, yaw acceleration, individual wheel rotation speed) and brings considerable advantages in terms of performance, direction stability, active safety and handling feedback. Again, F1 racing was a vital testbench that enabled Ferrari's engineers to develop a highly sophisticated system that perfectly matches the requirements of a road car designed to reach over 315 km/h and generate considerable cornering forces.
The electronic differential actively helps reduce Fiorano lap times by 3 seconds compared to the 360 Modena. For the driver, the E-Diff increases handling balance and grip (which noticeably improves acceleration), improves roadholding on the limit and also guarantees even better steering feel.