The functions of automotive air compressors are as follows:

1. Compression driven refrigerant: With the help of the car engine, the car compressor can compress the refrigerant vapor in the air conditioning evaporator into refrigerant vapor, which is discharged through the air conditioning pipeline to the air conditioning condenser, providing high-pressure conditions for the refrigerant vapor to condense and release heat in the condenser. During this process, the car compressor can also overcome the circulation resistance in the refrigeration system.

2. Cleaning the surface of parts: There are various types and complex shapes of automotive parts, making cleaning difficult. The inner and outer surfaces of the parts are prone to dirt or metal debris. Compressed air can be used to clean all types of parts.

3. Clearing blocked pipelines: In the air and oil passages of a car, it is common for foreign objects to enter or completely block them. Compressed air can be used to enter along the direction of the foreign objects and filled with compressed air to quickly clear them.

4. Check the leakage location: The air pipes, oil passages, and cooling system on the car often have varying degrees of leakage. In order to find hidden leaks, the parts can be immersed in water or coated with soapy water, and compressed air can be filled into the parts to smoothly discharge them.