Constitute. Differential housing manufacturers tell you that ordinary differentials are composed of planetary gears, planetary gear carriers (differential housing), side gears, and other parts. Differential housing manufacturers tell you that the power of the engine enters the differential through the transmission shaft, directly drives the planetary wheel carrier, and then the planetary wheel drives the left and right half shafts to drive the left and right wheels respectively.

Differential housing manufacturers tell you that the design requirements of the differential meet: (left half shaft speed) + (right half shaft speed) = 2 (planet wheel carrier speed).
Differential housing manufacturers tell you that when the car is going straight, the rotational speed of the left and right wheels and the planetary wheel carrier are equal and in a balanced state, but when the car turns, the balance of the three is destroyed, resulting in a decrease in the rotational speed of the inner wheel and the rotational speed of the outer wheel Increase.
The above information is the Differential housing manufacturer's introduction and analysis of the composition of the differential, hope it helps you.