A friend asked. I saw the differentials, limited slip differentials, and differential locks mentioned on many off-road vehicles. What are these three locks? I will give you a brief introduction today. First of all, let’s talk about the differential of a car. This is a mechanism that all cars have. Why should there be this mechanism? Everyone knows that when a car is running normally, the rotation speed of the left and right wheels are the same. When turning occurs, the distance traveled by the unit is different between the wheel on the inner side and the wheel on the outer side. Because its radius is different, there will be a difference in speed.

If it is a rigid axle with two wheels in series, then the speed difference will cause one wheel to be dragged, which will cause damage to the structure of the car, then this differential is pressed between the two wheels The middle of this shaft is generally planetary gear type, which is to solve the problem of the difference between the speed of the inner wheel and the outer wheel. Let's not talk about the detailed structure of this limited time. Let's talk about this concept. So what is a limited slip differential? Limited-slip differentials are usually installed on some high-performance sports cars. Everyone knows that when you have seen a car or the initial D, when drifting and making a sharp turn, everyone knows that the car has centrifugal force. When you turn Sometimes there is a tendency for one wheel to leave the ground, and its adhesion is relatively small, so the limited slip differential is to solve it. In this extreme case, it will distribute more torque to those with more solid grip. For the wheels on one side, this ratio is generally adjustable.

So what is the differential lock? Everyone knows that the differential lock is mainly used on off-road vehicles. It is caused by the structure of the differential. If one wheel is suspended in the air, the structure of the differential will cause all The torque is transmitted to the slippery wheel, and the vehicle is trapped in idling as a result. The existence of the differential lock is to solve this problem. When this happens, the differential lock will lock the two wheels on the left and right, which can produce different speeds, and become a rigid shaft. The two wheels are rigidly connected together. It doesn't matter if one wheel is slipping, and the other wheel is stuck on the flat ground. It can transmit torque to make the vehicle out of trouble, because off-road vehicles are generally four-wheel drive.

So what is called a lock, two locks and three locks? One lock is generally installed on the drive axle, (installed) on the drive axle to solve the problem of getting out of trouble. Common off-road vehicle shops have two locks. , It has a central differential. The function of the central differential is to distribute the torque to the front and rear axles. Because the four-wheel drive front and rear axles of the off-road vehicle can be driven, then this central differential lock solves this problem. . For example, you can often see pictures of off-road vehicles. After those muddy or stone, some wheels are suspended, then which side of the wheel cannot touch the ground and cannot be attached, it will transmit the torque to the wheel that touches the ground and can exert force. The lock is the most powerful configuration of off-road vehicles. The front and rear axles and the central differential are both when the transfer case is released and the torque is distributed. That is to say, it can provide the most powerful drive in the most extreme places. Force, which wheel hits the ground, is transmitted to which wheel.

However, the use of this type of differential lock is strictly limited. Generally, it is only used in off-road situations. There are many types of structures, including button type, manual type, and automatic type. These are limited by space. Lao Hu won't talk about it here, but I just need to tell everyone that the differential lock is only used for off-road vehicles to get out of trouble, and the three locks of the differential lock are the most powerful, and the two most common locks are the most basic.