|
A/C System Description - Compressor
A/C Compressor
The A/C compressor is a pump that compresses refrigerant. It is driven by the engine accessory drive belt. When the compressor clutch is OFF, the pulley and armature plate are disconnected and the A/C compressor does not operate. When the compressor clutch is ON, the field coil is energized, creating a strong magnetic field. This magnetic field locks the pulley and armature plate together, driving the compressor. The compressed refrigerant becomes a high pressure and temperature vapor that is sent to the A/C condenser. The A/C compressor has a mechanical relief valve, and the valve opens when refrigerant pressure exceeds the rated value. It cannot be reused, and should be replaced. NOTE: This illustration is an example only. The appearance and structure of the actual parts may vary depending on the model. Variable Capacity Control
The climate control unit operates the variable capacity control solenoid on the A/C compressor. The solenoid controls the cooling capacity by adjusting the flow of refrigerant pumped through the A/C system. The climate control unit determines the solenoid circuit's current flow based on the outside air temperature sensor, the in-car temperature sensor, and solar radiation values. |