How Does Anti-lock Braking System (ABS) Technology In Cars Work?

ABS prevents the wheels from locking up, thus preventing uncontrolled recurrence of the automobile safety and decreases the distance traveled without slipping.

Driving on expressways can be enjoyable and thrill-inducing, as many of you surely know. One gets to unleash a car’s full potential. The city roads keep us grounded, but the moment you hit the highway, there’s no looking back. You’ll almost never see a car going below 100 km/hr.

The situation becomes especially tricky during monsoons, as cruising in a vehicle at these high rates is the perfect recipe for a disaster if the roads are slick. Nevertheless, it does occur, so what can you do in a situation on a slippery road when you have to suddenly apply the brakes of your car? Without an anti-lock brake system, the wheels of your car stop spinning and the car will start to skid. You’ll completely lose control over the car and the results can be deadly.

Anti-lock braking systems (ABS) take a lot of the challenge out of this sometimes nerve-wrecking event. In actuality, on slippery surfaces, even professional drivers can’t stop as quickly without ABS as an average motorist can with ABS.


What is Anti-lock braking system (ABS) in automobiles?

As its name signifies, the anti-lock braking system is a safety system in cars and other auto body repair victoria that keep their brakes from locking up and assists their drivers to maintain steering control. Also known as the anti-skid braking system sometimes, it enables the wheels of a car to maintain tractive contact with the floor so that they don’t enter an uncontrolled skid.

With ABS, you have more control over your vehicle during situations such as sudden braking. Basically, it’s designed to help the driver maintain some steering ability and prevent skidding while braking.


ABS Working principle

The fundamental concept behind anti-lock brakes is simple. It prevents the wheels from locking up, thus avoiding uncontrolled skidding. ABS generally offers improved vehicle control and reduces stopping distances on dry and slippery surfaces.

A skidding wheel (where the tire contact patch is slipping relative to the road) has less grip (grip of the tire on the road) than a non-skidding wheel. By way of instance, if your car body shop victoria drives over a street covered in ice, it is not able to proceed and the wheels will keep spinning because no grip is present. This is because the contact point of the wheel is slipping relative to the ice.

ABS modifies the brake fluid pressure, independent of the quantity of pressure being exerted on the wheels, to bring the rate of the wheel back to the minimum slip level that is mandatory for optimal braking performance.


ABS has four major components:


1) Speed Sensor

This sensor monitors the speed of each wheel and determines the essential acceleration and deceleration of the wheels. It consists of an exciter (a ring with V-shaped teeth) and a wire coil/magnet assembly, which creates the pulses of electricity as the teeth of the exciter pass in front of it.


2) Valves

The valves regulate the air pressure to the brakes throughout the ABS action. There’s a valve in the brake line of each brake that is controlled by the ABS. In the first place, the brake valve is open and it helps the pressure from the master cylinder to be transferred to the brakes. In the second position, the brake valve stays closed and pressure from the master cylinder to the brakes is constrained. In the third position, the valve releases some of victoria car paint shop the pressure on the brakes. The next step is repeated until the vehicle comes to a stop. The resistance that you feel when braking suddenly at high speeds is actually the brake valves controlling the pressure that has been transferred into the brakes from the master cylinder.


3) Electronic Control Unit (ECU)

The ECU is an electronic control unit that receives, amplifies and filters the detector signals for calculating the wheel rotational speed and acceleration. The ECU receives a signal from the sensors in the circuit and controls the brake pressure, according to the data that is examined from the unit.


4) Hydraulic Control Unit

The Hydraulic Control Unit receives signals from the ECU to apply or release the brakes under the anti-lock conditions. The Hydraulic Control Unit controls the brakes by raising the hydraulic pressure or bypassing the pedal force to decrease the braking power.


ABS in operation

While braking, if a wheel-locking situation is detected or anticipated, the ECU alerts the HCU by sending a current and controls it to release the brake pressure, allowing the wheel speed to increase along with the wheel slip to decrease. After the wheel velocity increases, the ECU reapplies the brake pressure and limits the wheel slide to a certain degree (Note: When the braking action is initiated, slippage between the tire and the road surface in contact will happen, making the speed of the vehicle different from that of the tire). The Hydraulic Control Unit controls the brake pressure in each wheel cylinder depending on the inputs from the machine sensor. As a result, this controls the wheel speed. This process is repeated for the next braking operation.

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