How Does the Rear Differential Work?

Differentials are defined as vehicle parts which have the capability of transmitting torque and rotation. It is important to know how differentials work because vehicles would not be able to turn if the wheels rotation speed would be the same. The wheels are affected by the torque and its amount is dependent on the traction and the equipment. The traction level is related to the state of the weather.

The traction can have the highest level in sunny days. In cases like this the engine and the gears determine the torque level. When the weather is cold, the torque level is low and the amount of torque needed is the biggest amount generated without making the wheels slip.

Usually vehicles are able to generate more torque, but in cases of low traction, the torque will have a hard time reaching the ground. When more gas is pumped, the spinning speed of the wheels increases regardless of the slipping effect.

There are two different cases to study in which the differentials can cause trouble. The first case involves driving on thin ice. There are various ways for accelerating more efficient. Beginning with the second or the third gear will generate a much lower amount of torque. In this way the wheels will spin faster and this will allow the vehicle to accelerate better. The problem appears when one wheel is on thin ice and the other one is on a surface with good traction.

In the second case the off road environment is used for driving the car. SUV vehicles or four wheel trucks have a two side open differential (one side is the back and the other side is the front of the vehicle). With this type of component the vehicles can stop if one of the four tires is lifted from the ground. It will spin rapidly and the car will remain stuck.

For repairing this issue, the LSD or the limited slip differential comes into play. It is also called positraction. With the aid of a special mechanism, LSD will behave normally at turnings. The reason is that the torques will go from the slipping wheel and they will reach the non-slipping wheel.

Many people want to understand how differentials work and these examples can be very important. They reveal the importance of using the proper devices according to the terrain and vehicle type.

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