What Does a Differential Lock Mean?
1 Answers
In fact, the principle of a differential lock is to control the speed difference between the left and right wheels or the front and rear axles within a certain range or to completely synchronize them. Why do wheels rotate at different speeds? Because when a car turns, the turning radius of the inner wheel and the outer wheel differs by almost the width of the car. The distances they travel are different. At this point, an inter-wheel differential is needed to distribute power to the wheels while allowing them to rotate at different speeds. Similarly, there is also a speed difference between the front and rear axles. The differential ensures that the wheels do not interfere with each other on roads with good traction. However, on slippery surfaces, unpaved roads, or racetracks, the differential is not advantageous as it helps the slipping wheel lose power. This is when we need a differential lock to limit the speed difference between the wheels or axles to a certain range or to completely lock them. For example, in rugged SUV models, we can engage the rear/center/front differential locks to maximize tire traction and navigate off-road conditions. However, it's important to note that differential locks should not be engaged on roads with good traction, as this can severely damage the vehicle's drivetrain or cause rollovers. In sports cars and urban SUVs, differential locks are usually of the limited-slip type, which allows a certain speed difference between the wheels but prevents the slipping wheel or axle from spinning excessively. Of course, the multi-plate clutch structure can overheat during high-intensity use. Now, do you understand what a differential lock means?
