System Overview - Refrigerant Circuit With Electrically-Driven A/C Compressor (With Or Without Battery Cooling Module)
WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The arrows indicate the refrigerant flow direction.
The following illustration shows a refrigerant circuit with an expansion valve and a second evaporator for cooling the battery and an inner heat exchanger as an example.
The layout of the refrigerant circuit is vehicle-specific. Refer to Refrigerant Circuit (vehicle-specific service information).
HD = High Pressure Side
ND = Low Pressure Side
- Electrically-Driven A/C Compressor
- With A/C Compressor Control Module -J842- and Electrical A/C Compressor -V470-. Refer to Refrigerant Circuit (vehicle-specific service information).
- Pressure Relief Valve
- Condenser
- With receiver/dryer and dryer cartridge.
- Receiver/Dryer
- Is a component of the condenser
- Refrigerant Pressure Sensor
- Vehicle-specific versions. Refer to Refrigerant Circuit (vehicle-specific service information).
- Service Connection - High Pressure Side
- With closure cap.
- Refrigerant Line with Inner Heat Exchanger
- Refrigerant Shut-Off Valve --
- There are different names. Refer to Refrigerant Circuit (vehicle-specific service information).
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.NOTE:
The Refrigerant Shut-Off Valve -- is for example activated, if the battery needs to be cooled and the vehicle interior is not already being cooled (open without activation).
- Expansion Valve
- On the heater and A/C unit evaporator
- Front Evaporator
- Heater and A/C Unit Evaporator
- :Expansion Valve with Shut-Off Valve
- There are different names. Refer to Refrigerant Circuit (vehicle-specific service information).
- On the evaporator in the battery cooling module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.NOTE:
The -Expansion Valve with Shut-Off Valve- is activated when it is necessary to cool the battery (closed without activation).
- Evaporator
- Evaporator in Battery Cooling Module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
- Service Connection - Low Pressure Side
- With closure cap