Arizona Air Brakes CDL Practice Test

The primary function of the air compressor governor in a braking system is to regulate air pressure. The governor is a crucial component that automatically controls the compressor's operation. It determines when the compressor should start and stop based on the air pressure in the air tanks. When the air pressure falls below a designated level, the governor activates the compressor to build up pressure to ensure the braking system remains operational. Once the required pressure is reached, the governor prevents the compressor from running continuously, which helps to maintain a stable pressure within the system and contributes to efficient braking performance. This regulation is vital for ensuring that enough air pressure is available for the air brakes to function correctly and safely under various conditions. In doing so, it helps maintain the balance between producing sufficient air pressure for braking and preventing overload on the system components. This is essential for the overall safety and effectiveness of the air brake system in commercial vehicles.