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ABS Brake System

    

How ABS – Anti-Lock Breaking Systems Work

ABS anti-lock braking system is one of the cornerstones of active vehicle safety. Its function is to prevent the wheels locking during braking, and thus the loss of adhesion between wheel and road. Vehicle’s ABS system is operable even under heavy braking.

   ABS Anti-lock Braking System is one of the basic elements of active vehicle safety. ABS prevents wheel lock during braking. The wheel ABS system is still rotates and thus prevents the loss of adhesion between wheel and road. Rolling with the wheel helps maintain the stability, manageability and controllability of the vehicle in extreme situations (such as hard braking or when braking on slippery roads). Locked wheel does not transfer the lateral force and does not allow spin.

The system prevents the wheels from locking during braking that automatically adjusts the braking force in the stirrups so as to prevent the wheels from locking. When blocking wheels losing grip and the vehicle would become unmanageable, it would not be allowed to drive change by turning the steering wheel.

Each round has its own speed sensor, control unit, which gives information about the speed of each wheel. If the control unit receives a signal that the wheel is blocked, briefly reduced pressure in the brake system, thereby indicating wheel moving again. ABS may be released round 12 – 16 x per second, and the system still provides relatively wheel rotation and vehicle steerability (check – car Kammova circle ). Under heavy braking system, ABS braking force to maintain the adhesion occur at it to block wheels and the subsequent release of wheels in rapid succession until the vehicle stops.

Each wheel is equipped with inductive speed sensor (ABS wheel speed sensor), the image of the text is yellow sensor in the brake disc. This gives the control unit about the wheel. The control unit and evaluate the situation through the control valve or reduces brake pressure to the wheel or moving again.

ABS system was developed by Bosch in 1978. But history goes back even farther. By the early 20th century, there were considerations about how to avoid locking the wheels under heavy braking. Bosch has already announced a 1936 patent for a “device to avoid strong braking wheels of a motor vehicle.” But only with the advent of the electronic engineers to develop anti-lock braking system, which was sufficiently fast and robust for use in motor vehicles. The first commercial application of the ABS system found Special equipment such as Mercedes-Benz S-Class and shortly afterward also in the BMW 7 Series.

Bosch ABS system, however, developed further. The result of further development of the systems created ASR (systems that prevents rotation of the wheels when starting off), electronic stability program ESP. In recent years appeared ABS with EBV (Electronic brake-force distribution).

How do you know the activity of the ABS system?

During heavy braking on the adhesion between the brake you hear intermittent on a wet road. Interruptions caused by its activities, ABS just, forgiving when the pressure in the brake system. This reduces the braking force and the wheel is unlocked. Pedal of this activity, like kicking and braking for longer drops to the floor. Few experienced driver could balk and allow the brake pedal, but it would be a mistake!

Stopping distance on wet roads.

On dry roads the vehicle without ABS shorter braking distances. The wet ground has already settled the differences and the icy surface of a vehicle with ABS braking distance is shorter. An important advantage, however, remains above the opportunity to steer the vehicle during braking.

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29/09/2011 - Posted by | Uncategorized | , , , , ,

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