It's time to take subject four, and the questions on ABS are always wrong. What the hell is ABS? How should I remember it?

Why does the driving school coach always say ABS, and why do you have to take ABS in the exam? It is precisely because ABS anti-lock braking system involves braking that it affects the driving safety of automobiles. Many traffic accidents are directly related to braking distance and braking sideslip. Let's talk about the origin of the name ABS: ABS is the abbreviation of "anti-lock braking system" in English, or anti-skid braking system in English. The system translated into Chinese means:

In the process of braking, the braking force of the wheel can be automatically adjusted to prevent the wheel from locking, so as to obtain the best braking effect.

The simple understanding is to try to prevent the brakes from locking.

Why should we prevent the brakes from locking? First of all, from the harm caused by braking lock-up, when the braking force of the vehicle without ABS is greater than the friction between the tire and the ground, the wheels will slip. When braking, there are two main forces, one is the resistance of the braking system. Friction resistance between brake pads and brake discs is also called braking force. Another force is the friction resistance between the tire and the ground, also called tire adhesion. When the braking force is less than the adhesion, the car can stop smoothly. On the contrary, the wheels of the car will slip with the ground, and the car will not stop but slide out of a certain distance, and the car body can't control it. That is to say, I don't know how far and where the car will slide.

It's like walking on ice. If we choose to slip, we can't control the direction, speed or stop immediately. If we walk slowly instead of sliding. Then the direction and speed can be controlled. This is what ABS-related topics say about ensuring steering ability during emergency braking.

When a car without abs is in emergency braking, when the braking force is greater than the tire adhesion, the wheels will slip. When the wheels slip, the vehicle basically loses control, just like we slide on the ice. At this time, it is basically impossible to change the direction of the vehicle to avoid dangers and obstacles. I'm resigned to my fate and won't even give you a chance to try.

For vehicles with ABS system, when the braking force is greater than the tire adhesion, the tire will not lock up and naturally will not slip. Under the condition that the tires don't slip, the vehicle steering system can be controlled, that is to say, in the case of emergency braking, the vehicle can still avoid obstacles and avoid risks, and minimize the damage as much as possible. This is why ABS system can ensure steering ability!