8201025121 Car Air Compressor 12V For Renault Fluence For Dacia Dokker WXRN017

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Working Principle

The basic working principle of the automobile air conditioning compressor is to suck low-pressure cold gas (usually refrigerant) into the compressor cavity through the driving device, and then compress it into high-pressure and high-temperature gas.

Compressors usually use piston or screw compressors. In a piston compressor, the piston moves up and down in the cavity, and the cold gas is compressed by the movement of the piston. In a screw compressor, the screw compresses the cold gas. The compression process of the compressor increases the pressure and temperature of the cold gas. The high-pressure and high-temperature gas will then enter the condenser and be converted into high-pressure hot gas through heat dissipation, then cool and expand through the expansion valve, and finally enter the evaporator to prepare for circulation again.

Throughout the process, the compressor provides compression and conversion capabilities and is one of the key components to realize the automotive air conditioning refrigeration cycle.

Piston-Type Compressors

The automotive air conditioning compressor is a crucial component of the AC system, responsible for compressing and circulating the refrigerant. It consists of several key parts that work together to achieve effective cooling.

1. Compressor Housing: The outer shell of the compressor, designed to enclose and protect the internal components.

2. Compressor Pulley: A pulley attached to the front of the compressor, connected to the engine via a belt. It transfers power from the engine to drive the compressor.

3. Clutch Assembly: The clutch allows the compressor to engage and disengage as required. It consists of an electromagnetic coil, friction plates, and a hub.

4. Swash Plate: This component converts the rotational motion of the compressor shaft into a reciprocating or up-and-down motion. It is responsible for compressing the refrigerant.

5. Piston: Linked to the swash plate, the piston moves up and down within the compressor cylinder to compress the refrigerant gas.

6. Reed Valves: These one-way valves control the flow of refrigerant into and out of the cylinder. They prevent backflow and ensure efficient compression.

7. Oil Separator: Located within the compressor housing, it separates the refrigerant oil from the refrigerant gas before it leaves the compressor.

8. Shaft Seal: This seal prevents refrigerant from leaking out and contaminants from entering the compressor. It ensures the integrity of the system.

9. Control Valve: Some compressors have a control valve that regulates the flow of refrigerant based on the cooling demands of the vehicle.

10. Mounting Brackets: These brackets secure the compressor to the engine or chassis, keeping it stable and in the correct position.

Each of these components plays a crucial role in the operation of the automotive air conditioning compressor. Their proper functioning ensures efficient cooling and overall performance of the AC system in vehicles.

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