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201206 Jul

Car-brakes

 

Over the past decade, ensuring safety has been a major focus area for  the automotive industry across the globe. Car manufacturers have spent millions of dollars into researching safety and regulatory devices. And the result has been an astonishing improvement in the safety standards of even inexpensive vehicles.

 

And some of the improvements that has been achieved over the last few years in ensuring better safety of cars revolves around its braking system. The ability to stop a car in a safe manner is crucial in preventing accidents and ensuring safety. Antilock Braking System (ABS) is now found in many cars and if applied properly, ABS goes a long way in ensuring effective braking and safety. In addition to the ABS, many cars also come equipped with Electronic Brake Force Distribution (EBD) which further improves the braking system of the car. But what exactly is EBD? Read on to find out.

 

Electronic Brake Force Distribution (EBD) or Electronic Brake Force Limitation (EBL) is an automobile brake technology that automatically varies the amount of force applied to each of a vehicle's brakes, based on road conditions, speed, loading, etc. Always coupled with ABS, EBD can apply more or less braking pressure to each wheel in order to maximise stopping power whilst maintaining vehicular control and direction.

 

Typically, the front end carries the most weight and EBD distributes less braking pressure to the rear brakes so the rear brakes do not lock-up and cause the car to skid which might result in the driver losing control of the vehicle. In some cases, EBD distributes more braking pressure at the rear brakes during initial brake application before the effects of weight transfer become apparent.

 

Under heavy braking, when vehicle's wheels have a chance to lock-up, the ABS monitors wheel speed and releases pressure on individual wheel brake lines, rapidly pulsing individual brakes to prevent lock-up. Modern ABS has an individual brake line for each of the four wheels, enabling different braking pressure on different road surfaces.

 

The job of the EBD as a subsystem of the ABS system is to control the effective adhesion utilisation by the rear wheels. The pressure of the rear wheels is approximated to the ideal brake force distribution in a partial braking operation. To do so, the conventional brake design is modified in the direction of rear axle over braking, and the components of the ABS are used. EBD reduces the strain on the hydraulic brake force proportioning valve in the vehicle.

 

If explained in simple terms, EBD or the electronic brake force distribution system is based on the principle that not every wheel needs the same amount of brake force into bringing the car to a halt. Today, EBD is being offered in a lot of cars and works togerger with ABS to ensure effective braking and safety.

 

Another important subsystem of the ABS which which works in conjunction with the EBD to enable the system to work effectively is the Brake Assist (BA) system. Brake assist measures the speed and force of brake application to determine whether the driver is attempting an emergency stop under panic sutiations. If such an emergency is determined, the system applies additional brake force o allow the driver to take full advantage of the ABS which prevents wheel lock up and brings the vehicle to a safe halt.

 

So next time you decide to buy, hire or lease a car, please check whether the vehicle has EBD and BA. Always remember, there is no substitute to safety.

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