ABS - ANTI BRAKE LOCKING SYSTEM

Anti-Lock Braking System (ABS)

The ABS (Anti-lock Brake System) monitors the speed of each wheel to detect locking. When it detects sudden braking, it will release braking pressure for a moment and then provide optimum braking pressure to each wheel. By repeating this process in a short period of time, it enhances steering control during sudden stops. As a result, it will also help improve the ability of stopping the vehicle.

ABS only supports the driver's control of the vehicle, and it is not a substitute for it. It is the driver's responsibility to drive at the appropriate speed depending on the condition of the road and to keep a generous distance from the car ahead of you.

Supports unexpected braking in case of emergency
Studies show that nearly half of all drivers do not step on the brake quickly and strongly enough to stop the vehicle in case of an emergency 

When Brake Assist detects an attempted panic stop, it supports drivers by strengthening the power
Brake Assist will detect attempted panic braking based on the force that is applied to the brake pedal and how fast the driver is stepping on the pedal. When the system recognizes sudden braking, it will add additional pressure to the brake.

When your foot is released during Braking Assist,braking power lessens and regulates the brakes with ease.

Traction Control (TRC)

When you are starting the vehicle or accelerating on a wet surface, you could lose control of the wheel because of wheel spin. TRC will help prevent such events from happening.

TRC continually monitors the condition between the tires and the surface of the road.When it detects wheel spin, the system applies brakes or slows down the engine to regulate spinning and help ensure proper contact of tires. This help prevent the car from becoming unstable.

There might be the cases in which the half-side of the wheel runs off or the wheels spin off on the snowy road. And also there might be the case that the current tractino control might not be working well.In those cases, Auto LSD is one of the technologies which both improve startability and runability.

Purpose

Anti-lock brake systems (ABS) - generally also referred to as anti-lock systems (ALS) - are designed to prevent the vehicle wheels from locking as a result of the service brake being applied with too much force, especially on slippery road surfaces.

The idea is to maintain cornering forces on braked wheels to ensure that

the vehicle or vehicle combination retains its drivin

g stability and manoeuvrability as far as physically possible. The available powertransmission or grip between tyres and carriageway should also be utilised as

far as possible to minimise the braking distance and maximise vehicle deceleration.

Why ABS?

Although today commercial vehicle brakes are designed to a very hightechnical standard, braking on slippery roads often results in potentially dangerous situations. During full or even partial braking on a slippery road it may no longer be possible to fully transfer the braking force onto the road due to the low coefficient of friction  (friction coefficient (k)) between the tyres and the carriageway. The braking force is excessive and the wheels lock up. Locked wheels no longer provide any grip on the

road and are almost incapable of transferring any cornering forces (steering and tracking forces).

This often has dangerous consequences:

– The vehicle becomes unsteerable

– The vehicle breaks away in spite of countersteering, and starts to swerve.

– The braking distance is significantly increased

– Tractor-trailer combinations or semitrailer trains may break away or jackknife.

Load sensing valve influence

On dry roads today’s load sensing valves (ALB) alone are often capable of preventing the wheels from locking if the vehicle is unladen; they also help the driver to effectively grade the braking process on wet road surfaces, but they are unable to prevent locking as such (no slip monitoring). In addition, they are unable to counteract any overreactions on the part of the driver, or any variances in frictional or adhesion coefficients which may apply to different sides of the vehicle, or indeed to its different axles (μ split road surfaces).

Benefits of ABS:

Only the Anti-Lock Brake System (ABS)

– guarantees stable braking characteristics on all road surfaces.

– maintains steerability and generally reduces the braking distance

– prevents vehicle combinations from jackknifing

– reduces tyre wear.

Limits of ABS

Although ABS is an effective safety device, it can not suspend the limits

defined by driving physics. Even a vehicle fitted with ABS will become uncontrollable if driven too fast around a corner. So ABS is not a licence for a maladjusted style of driving or failure to observe the correct safety distance.

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