What does the air compressor governor control?

The air compressor governor plays a crucial role in the functioning of air brake systems by controlling when the air compressor pumps air into the system. It monitors the pressure in the air tank and determines whether the compressor needs to engage or disengage based on the pressure levels. When the air pressure drops below a predetermined level, the governor activates the compressor to replenish the air; once the pressure reaches the desired level, the governor will stop the compressor from pumping further air to prevent over-pressurization. This control mechanism ensures that the air brake system maintains sufficient pressure for effective braking without placing unnecessary strain on the compressor.

Understanding the function of the air compressor governor is essential for safe vehicle operation, as a malfunctioning governor could lead to inadequate braking performance and potential safety hazards on the road.