What is the air conditioning pressure for new energy vehicles?
2 Answers
The normal high pressure for a car air conditioning system should be 1.3-1.7MPa, while the normal low pressure should be between 0.15-0.25MPa. Common car air conditioning faults: Evaporator pressure too low. Evaporator pressure too high. Compressor discharge pressure too low. Refrigeration compressor discharge pressure too high. Car air conditioning troubleshooting methods: Replace the expansion valve, clean the filter screen, replace pipes and hoses. Check the operation of the suction throttle valve and perform necessary repairs. Secure the temperature sensing bulb, replace the expansion valve, check the operation status, and perform necessary repairs. Resolve engine overheating, release excess refrigerant, vent air, add a small amount of refrigerant to normalize gauge readings, and clean the condenser.
Last time I took a long-distance trip in a new energy vehicle, I specifically researched the issue of air conditioning pressure. The air conditioning system in new energy vehicles uses an electric compressor, and the pressure values are different from those in traditional fuel-powered vehicles. The low-pressure side is typically between 2 to 3.5 bar, while the high-pressure side is around 12 to 18 bar. The exact pressure also depends on the ambient temperature, and it will increase significantly during hot summer days. I recommend that car owners regularly check the cooling performance of their air conditioning. If the air vents aren't cold enough or there are unusual noises, it's likely due to refrigerant leakage causing abnormal pressure. I remember last year my friend's car had its compressor burn out because of this issue, costing nearly ten thousand yuan to repair. It's best to have the pressure values checked at a professional shop every two years, and while you're at it, clean the condenser fins to improve cooling efficiency and save electricity.
