The English name of anti-lock braking system Anti-lock Brake System, referred to as ABS, the system can be installed on any car that comes with a hydraulic brake system. The antilock braking system using the valve body rubber balloon, when the driver depresses the brake, the brake fluid pressure will be filled to the valve body of the ABS, this time the balloon and then use the middle of the air compartment pressure was returned, this will bypass the lock when the wheels point. This paper briefly describes some of the advantages and considerations of automotive anti-lock braking system principle and the system, I believe will give readers friends learn a great help!

Anti-lock braking system is a just application of the train, later they gradually use in aircraft, the system has been very popular. Currently, 10 million yuan level sedan will see this kind of system, and even some buses have also been installed in the system. Vehicles equipped with anti-lock braking system encountered some bad weather, such as snow, freezing or rainy, slippery, drivers can safely operating the steering wheel, brake. The system not only effectively prevent the accident, and can also reduce the friction of the tire. But this system does not automobile shorten the development distance, in some cases may even increase braking distance.

During braking, the ABS in accordance with the velocity signal coming from each wheel speed sensor can quickly determine at the wheel locked state, the closure start locking wheel the upper normally open input of the solenoid valve, so that the same braking force, if the wheel to continue Hugging, open the normally closed output solenoid valve, the braking pressure on this wheel is due to the direct access to the piping of the brake fluid reservoir tank and rapidly downward, due to excessive braking force, locking the wheel is prevented.

In the meantime, the main control valve is energized to open, the dynamic pressure of the brake fluid to enter the brake valve, the dynamic pressure of the brake fluid from the dynamic booster tubing through the main control valve, the master cylinder seal the outer edge reaches the front wheel input The conduit so repeatedly work (working frequency of 3-12 times / sec), the braking state is always in the optimum point (the slip ratio S was 20%), the braking effect reached Preferably, lane safest.

The the front cavity Mainland brake fluid in the master cylinder is the dynamic pressure of the brake fluid, it pushes the reaction sleeve is moved to the right, so that the reaction sleeve and promoting booster piston brake pedal push rod to the right. Therefore, in the ABS working when the driver can feel the feet pedal to vibrate, hear some noise.

Vehicle deceleration, the ABS computer detects wheel lock status disappears, it will make the main control valve is closed, so that the work transferred to common ground braking state. If the the pressure accumulator ground pressure falls below the safety limit, red brake fault light and amber ABS malfunction indicator light.

In this case, the driver to use a larger fertility deep-pedaling brake the manner in order to be effective braking of the front and rear wheels.

Automotive anti-lock braking system advantages effectively shorten the braking distance. In the emergency braking state, the ABS can wheel is in both scroll another drag conditions, dragging the proportion of about 20%, when the frictional force of the tire and the ground, i.e. the so-called best braking point or region. Ordinary braking system can not do this.

2, strengthen control of the vehicle. Car equipped with ABS, the driver in emergency braking process maintained with a large degree of manipulation, can adjust the direction, to make timely and necessary to avoid the obstacle or danger of the front. Without vehicles equipped with ABS, emergency brake prone sideslip, drift and other unforeseen circumstances, the driver lost control of the vehicle, increasing the risk.

3, reducing tire wear. Use the ABS to eliminate the locking of the wheels in the emergency braking process of the tire subjected to the damage can not be repaired, the possibility of a flat spot that is formed on the tire surface. Carefully you will find a long brake marks left on the road is not equipped with ABS vehicles equipped with ABS vehicles only leave a slight brake marks, and is a short short, significantly reduced the degree of wear of the tire and the ground.

4, reducing hydroplaning phenomenon. The vehicle is not equipped with ABS emergency braking in the wet, smooth on the road, the wheels hold after the death of the vehicle inertia to continue to slide forward on the road to maintain. ABS due to the reduced chance of wheel lock, and therefore also reduces the chance of the braking process hydroplaning.

Automotive anti-lock braking system Notes: (1) Check the ABS anti-lock braking system should be preceded by pulling the power.

(2) replace the brake or replace the hydraulic brake system parts, brake pipe air drained, so as not to affect the normal operation of the braking system.

(3) car equipped with ABS, annual brake fluid should be replaced once. Otherwise, the brake fluid is hygroscopic, moisture content will not only reduce the boiling point, cause corrosion, but it will also cause the braking performance of a recession.

Xiaobian to introduce you some knowledge of the principles of automobile anti-lock braking system, I believe, you readers in this knowledge has Xiaobian explain understand. In the case of an emergency when the brake pedal must pay attention to foot in the end, so as to activate the ABS system, this time the brake pedal will be some jitter, occasionally there will be some hard, but be careful not to loosen, this time the ABS system began to work.