What does a limited-slip differential mean?
2 Answers
A limited-slip differential is an improved type of differential that restricts wheel slippage, allowing a certain range of speed difference between the two drive wheels to ensure normal driving performance such as turning. The differential is designed to create speed differences between the wheels, enabling proper torque distribution between the left and right wheels during turns to achieve optimal turning performance. When the engine's power passes through the clutch, transmission, and driveshaft, and undergoes speed reduction and torque increase via the final drive's reduction gear, it then faces torque distribution between the left and right wheels. This allows the wheels to rotate at different speeds, enabling them to travel unequal distances in a pure rolling motion as much as possible, thereby reducing friction between the tires and the ground. This process is known as the differential action.
When driving, I often hear friends mention limited-slip differentials, which are essentially smart devices that distribute wheel power. For example, on muddy roads or curves, a standard differential would waste power on the spinning wheel, making the car prone to skidding. But this limited-slip design locks part of the slipping, allowing the other wheel to keep pushing the car. I've tried it on rainy highways, and the car stays stable without drifting, which is much more reassuring. In everyday driving, this feature is most widely used in SUVs and sports cars, especially in four-wheel-drive systems to improve traction. Remember to check tire wear regularly because it tends to consume tires faster when working.
