Construction Structure of an Air Brake System



What Is the Construction Structure of an Air Brake System?

Air brake systems have a two-stage air compressor with gearbox shafts or a crankshaft. Here is what happens inside the unit:

This system intakes air from the atmosphere, compresses it and delivers it to the storage tank through a valve. 

When reservoir pressure attains maximum degree, the unloader valve opens.

Then, the compressed air is directly released into the atmosphere.

All four wheels with brake chambers have a diaphragm, which forces air pressure. This force operates the camshaft that runs the lever and applies brakes.

Each brake chamber connects to a brake pedal, and an air filter fits between the brake valve and storage tank.

Below is a step-by-step procedure for the functioning of air brakes:

How do Air Brake Works ?

Step 1: When a driver starts a car's engine, the brake compressor activates as it functions by the engine. Then, the brake compressor starts compressing the atmospheric air. 

Step 2: Through the compressor the air that is compressed with maximum force flows to the compressed storage tank. It is the reservoir that contains some air reserved from its previous cycle.

Step 3: As the driver forces the brake pedals, the inlet valve opens and the outlet one closes. This gives the compressed air a chance to flow from the storage tank. It passes through the brake lines of the mechanism.

Step 4: Through the brake lines, the compressed air shifts to the brake cylinder. A brake cylinder consists of a piston inside its mechanism.

Step 5: As the compressed air flow forces pressure on the piston, it shifts away from its original place. It results in the conversion of pneumatic to mechanical energy.

Step 6: Brake drums sit on the wheel end of a brake cylinder. Moreover, there is a mechanical actuator which is like slack that consists of brake pads at its outer section. As this piston moves due to the force of the compressed airflow, there are expansions of the mechanical actuator inside brake drums. This function forces brake pads to move in an outward direction. It allows frictional contact with spinning drum lines.

Step 7: As there is frictional contact between moving drum lines and brake pads, its force on wheels causes your vehicle to halt or slow down.



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