What is the standard static pressure for car air conditioning?
2 Answers
Here is an introduction to the standard static pressure for car air conditioning: 1. When the compressor is running at 1500~2000rpm: The high pressure (discharge pressure) is normally around 1.5~2.0mpa, and the low pressure (suction pressure) is around 0.15~0.35mpa. The exact values depend on the matching of the air conditioning system in different vehicles and the ambient temperature. 2. At idle speed (engine 700~900rpm): If the ambient temperature is high, such as under direct sunlight in summer, the high pressure may be slightly higher, up to around 2.5~2.8mpa, but it generally does not exceed 3.1mpa.
I've given a lot of thought to the static pressure in car air conditioning systems. Simply put, it's the pressure reading taken when the AC system isn't running, typically within the normal range of 25 to 35 psi. But you can't just focus on the numbers – ambient temperature plays a crucial role. For example, on a hot summer day at 30°C, the pressure might rise to around 35 psi, while in cold winter conditions it could drop below 25 psi. Why does this matter? Because it can indicate potential leaks or blockages in the system. In my own car, I once noticed higher-than-normal pressure and discovered it was due to a worn-out sealing ring causing a leak. If left unaddressed, this can lead to reduced cooling efficiency and increased fuel consumption. I recommend checking it during regular maintenance using professional pressure gauges – safety first, don't attempt DIY fixes without proper knowledge.
