RC.600.169 12V Auto AC Compressor 30676394 1234250 1255085 For Ford For Focus For CMAX WXFD021

RC.600.169 12V Auto AC Compressor 30676394 1234250 1255085 For Ford For Focus For CMAX WXFD021

Parameter :

Product pictures

How a Car A/C Compressor Works

1. Basic Function

The compressor pressurizes low-pressure refrigerant gas from the evaporator, turning it into a high-pressure, high-temperature gas before sending it to the condenser for cooling.

2. Key Components

Compressor Clutch: Engages/disengages the compressor pulley based on A/C demand.

Swash Plate/Pistons (in piston-type compressors): Compresses refrigerant.

Refrigerant Inlet & Outlet: Low-pressure gas enters, high-pressure gas exits.

Solenoid (in variable displacement compressors): Adjusts cooling capacity.

3. Step-by-Step Working Process

(1) Refrigerant Intake

The low-pressure, cool refrigerant gas (from the evaporator) enters the compressor.

(2) Compression

The compressor’s pistons or rotors compress the gas, increasing its pressure and temperature.

Common compressor types:

Piston-Type (Reciprocating)

Scroll-Type (Spiral design, smoother operation)

Rotary Vane (Uses rotating blades)

Variable Displacement (Adjusts output based on cooling needs)

(3) Discharge

The high-pressure, hot gas flows to the condenser, where it releases heat and becomes a liquid.

(4) Clutch Engagement

The electromagnetic clutch connects/disconnects the compressor from the engine belt:

Engaged (A/C ON): Pulley drives the compressor.

Disengaged (A/C OFF): Pulley spins freely, saving engine power.

4. Common Issues Affecting Performance

Low Refrigerant: Prevents proper compression.

Clutch Failure: Compressor won’t engage.

Internal Leaks/Wear: Reduces cooling efficiency.

Blocked Orifices: Restricts refrigerant flow.

5. Importance of the Compressor

Without it, refrigerant cannot circulate, and the A/C system cannot cool the cabin.

A failing compressor can lead to warm air, strange noises, or complete A/C failure.