What does the air compressor governor control?

The air compressor governor plays a crucial role in the operation of the vehicle's air brake system. Its primary function is to monitor and control the operation of the air compressor itself. The governor regulates when the air compressor should start and stop based on the air pressure in the system.

When the air pressure in the tanks falls below a certain threshold, the governor signals the compressor to restart, allowing it to build up the necessary pressure for the braking system to function effectively. Conversely, once the pressure reaches a predetermined level, the governor will signal the compressor to stop operating to prevent over-pressurization.

Understanding the role of the air compressor governor is important for safe vehicle operation, especially in commercial vehicles that rely heavily on air brakes.