What is the main function of the air compressor in an air brake system?

The primary role of the air compressor in an air brake system is to maintain air pressure within the brake system. This is crucial because air brake systems rely on compressed air to engage the braking mechanism effectively.

When the driver applies the brake, a control valve releases air to the brake chambers, activating the brakes. The air compressor ensures that there is always enough air pressure available in the system to facilitate this operation. It works by pumping air from the atmosphere into the storage tanks, maintaining the necessary pressure for both regular braking and emergency situations.

Maintaining the right air pressure is vital for the proper functioning of the brakes, as insufficient pressure can lead to brake failure or reduced braking effectiveness. Therefore, the air compressor is integral to the safety and performance of vehicles equipped with air brakes.