What is the anti-lock braking control system mainly used for?

Why did you dare to step on the brakes? Introduction of ABS of automobile anti-lock braking system

ABS automobile anti-lock braking system? What is an anti-lock braking system? Usually, we only know that the anti-lock braking system is to prevent the vehicle from slipping, rollover, wheel locking, locking and sideslip. Before touching the car, I often hear the masters say, don't step on the brakes to the end, step on them, put them down and step on them again. I was thinking, why? Isn't it just the brakes? Step on it. This idea is ok today. Let's talk about why you can pedal the brakes to the end, but it's not enough not to pedal to the end.

Conventional braking process of ABS;

Usually, the traditional anti-lock braking system doesn't work. When we step on the brake pedal, the master cylinder receives the signal and starts to work, so that the hydraulic oil can reach the wheel cylinder through hydraulic related parts to realize vehicle braking.

Pressurization process of ABS:

ABS pressurization process

When we need to stop or brake urgently, the electronic controller ECU judges that the vehicle is not locked through the wheel speed sensor. According to the conventional braking method, with the stroke of the brake pedal, the oil pressure of the wheel cylinder increases. This process is called the pressurization process of ABS.

Pressure maintaining process of ABS:

When the ECU obtains that the speed of a tire is about to be zero, the ECU will send an instruction to the brake pressure regulator to close the master cylinder and related channels, so that the oil pressure of the wheel cylinder will not increase. This is the pressure maintaining process of ABS.

Decompression process of ABS:

ABS decompression process

When ECU monitors the vehicle slipping, locking and locking through the wheel speed sensor, it immediately sends an instruction to the brake pressure regulator to open the oil return channel, so as to make the hydraulic oil in the wheel cylinder return to the master cylinder and reduce the wheel cylinder pressure, thus realizing the anti-lock braking of the tire.

Through the above introduction, we have a certain understanding of automobile ABS. The work of ABS system mainly solves the problems of wheel cylinder pressurization, pressure maintenance and decompression. Back to the question in the article, why can you step on the brakes to the end? In case of emergency, press the brake to the end immediately, and the ABS system will start to work. Otherwise, ABS will not work, which will increase the braking distance. When ABS is working, ECU will monitor the tire speed in real time. When the tire speed is low or the vehicle will slide sideways, the pressure in the tire cylinder will be released continuously. At this time, you will feel that the vehicle is making a loud noise and the brake pedal is shaking. Don't panic. This is the decompression process of ABS, and the phenomenon will disappear when the vehicle is driving normally.

ABS is also the application of electronic control system in vehicles. With such a system, vehicles will be safer and more reliable.