Automobile Brake Pads E11- Emark Licence IATF16949 Quality Syste

What is commercial vehicles?

A commercial vehicle is any type of motor vehicle used for transporting goods or paying passengers. The European Union defines a "commercial motor vehicle" as any motorized road vehicle, that by its type of construction and equipment is designed for, and capable of transporting, whether for payment or not:
(1) more than nine persons, including the driver;
(2) goods and "standard fuel tanks". This means the tanks permanently fixed by the manufacturer to all motor vehicles of the same type as the vehicle in question and whose permanent fitting lets fuel be used directly, both for propulsion and, where appropriate, to power a refrigeration system. Gas tanks fitted to motor vehicles for the direct use of diesel as a fuel are considered standard fuel tanks.

Paccar (DAF, Leyland, Foden) | Schmitz Cargobull | Tuna Stålrör | Valx | Volvo Trucks (RVI, UD Trucks, Volvo) | WABCO | Beinben-Truck | BPW | Brakes India Limited | Wuhan Youfin Auto Parts Co (Youfin) | Yutong | ZF Friedrichshafen | DAF | Daimler AG (Daimler, EvoBus Freightliner, Fuso, Mercedes-Benz) | Dana Holding Corporation | Ege Fren | Haldex | Hendrickson | Inver Press | Kamaz | Knorr-Bremse | Knott Group | Krone Group (gigant) | | Meritor

What is commercial vehicles brake ?

There are two types of brakes of commercial vehicles:

1) Drum Brakes

Drum brake is a brake that uses friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part called a brake drum. Drum braking linings have brake drums that rotate with the wheels.

Brake shoes fitted with brake linings (friction material) which press against the drums from the inside to generate braking force (decelerate and stop) are set inside of the drums.

With this system, friction is generated by pressing the brake linings against the inside surfaces of the drums. This friction converts kinetic energy into thermal energy. Drum rotation helps to press the shoes and the lining against the drum with more force, offering superior braking force in comparison with disc brakes. On the other hand, it is very important to design the components so that the heat from the thermal energy is dissipated efficiently into the atmosphere.

There are three types of drum brakes depending on how the brake shoes are pressed on to the drums; leading/trailing shoe type, twin leading shoe type and duo-servo type.

WVA19487 Commercial Vehicles Brake Linings Parameters:

2) Disc Brakes

Brake rotors of disc brakes rotate with the wheels, and brake pads, which are fitted to the brake calipers, clamp on these rotors to stop or decelerate the wheels. The brake pads pushing against the rotors generate friction, which transforms kinetic energy into a thermal energy.

This thermal energy generates heat, but since the main components are exposed to the atmosphere, this heat can be diffused efficiently. This heat-dissipating property reduces brake fade, which is the phenomenon where braking performance is influenced by the heat. Another advantage of disc brakes is its resistance to water fade, which occurs when the water on the brakes significantly reduces braking force. When the vehicle is in motion, the rotor spins at high speeds and this rotational motion discharges the water from the rotors themselves, resulting in stable braking force.