Monday 4 January 2016

Electronic Limited Slip Differential (eLSD)

Introducing electronics into any technology improves its accuracy. Electronic limited slip differential (eLSD) is just like a normal LSD having pressurized hydraulic clutches, fine tuned with electronics.

An eLSD employs Electronic Control Unit (ECU) to provide sufficient torque to each wheel. Wheel sensors sense the wheel speeds and provide inputs to the ECU. In the event of slipping of wheels, the ECU actuates the hydraulic clutches allowing it to transfer more torque to the wheel having more traction. An eLSD also allows for better control over a vehicle while taking a turn or changing the lane with the help of Electronic Stability Program (ESP).

An eLSD prevents a vehicle from excessive yaw. From the top view, yaw is defined as the rotation of a vehicle around its central point. Rear wheel eLSD monitors whether the rear wheels are moving in the same direction as the front wheels while turning or changing the lane. If the yaw is more than the limit, then the vehicle could go for a spin. Hence, an eLSD prevents the vehicle from spinning.

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