Electronic differential braking

EDS, English full name is Electronic Differential System, namely electronic differential lock, it is an extension function of ABS, used for discriminating whether the wheel of the car loses the friction of the ground, thus control the acceleration skidding of the car.

Because the differential allows the wheels on both sides of the drive shaft to rotate at different speeds, if the wheel on one side of the drive shaft slips or floats, it will cause the other side wheel to completely lose power when the EDS electronic differential lock passes the ABS system. When the sensor detects the phenomenon of different speeds of the wheels on both sides due to wheel slippage or suspension, the ABS system brakes the wheel on the side of the skid so that the driving force effectively acts on the non-skidding side. Wheels ensure that the car starts steadily. When the vehicle's driving conditions return to normal, the electronic differential lock stops.

Compared with ordinary vehicles, vehicles with EDS can make better use of ground adhesion to improve the vehicle's operability, especially on sloping road surfaces. The role of EDS is even more pronounced. However, it has a speed limit and will only start when the speed is less than 40km/h, mainly to prevent starting and slipping at low speeds.

At present, EDS is only installed on some premium cars, such as the Audi A6, Volkswagen Passat, and Lexus LS430.