Arizona Air Brakes CDL Practice Test

How is the air compressor connected to the engine?

1. Gears

2. Hoses

3. V-Belt

4. Gears or a v-belt

The correct answer is: Gears or a v-belt

The air compressor is connected to the engine primarily through either gears or a V-belt, depending on the design of the vehicle. In many engine configurations, gears provide a reliable means of direct connection, allowing the compressor to run at the same speed as the engine, which is crucial for maintaining consistent air pressure in the braking system. Alternatively, a V-belt can be utilized, transferring power from the engine’s crankshaft to the compressor. This method also facilitates rotation and operational efficiency. Both methods ensure that the air compressor operates effectively, ensuring a steady supply of compressed air for the vehicle's braking system. Understanding the connection type is essential for maintenance and troubleshooting, as each method has its own requirements regarding tension and wear over time. Hence, this option captures the essential mechanisms by which the air compressor maintains its functionality in relation to the engine.