The air compressor is typically mounted on the engine of the vehicle. It is driven by a belt or gear from the engine's crankshaft. The air compressor draws in ambient air through an intake filter and compresses it into the storage tank. The storage tank is typically located under the vehicle's frame.
The compressed air from the storage tank is used to power the air brakes. When the driver steps on the brake pedal, it actuates a valve that allows the compressed air to flow to the brake chambers. The brake chambers are located on each of the vehicle's wheels. When the compressed air enters the brake chambers, it pushes on a diaphragm, which in turn applies force to the brake shoes or brake pads. This force causes the brake shoes or brake pads to rub against the brake drums or brake rotors, which slows down the vehicle.
Air brakes are a type of positive displacement pump. This means that they can deliver a constant flow of air, even against a high pressure. This makes them ideal for use in vehicles that require a lot of braking power, such as trucks and buses.
