The working principle of the differential

The working principle of the differential is to divide the torque output by the engine into two, allowing two different speeds to be output when steering. When the car is driving in a straight line, the two planetary gears only revolve and do not rotate, and the power is evenly transmitted to the two half shafts, so that the left and right wheels rotate at the same speed. When the car turns, the inner wheels will receive greater resistance, resulting in different forces on the half shafts on both sides, which causes the planetary gears to rotate. In this way, the speed of the inner half shaft will slow down, and the speed of the outer half shaft will increase, thereby realizing the difference in the speed of the wheels on both sides.