What Causes Air Leakage in Car Air Conditioning?
2 Answers
Reasons for air leakage in car air conditioning: 1. Compressor issues: Insufficient sealing at the end of the compressor stroke. At the end of the stroke, the refrigerant is highly compressed, which may lead to excessive pressure. At this point, if the sealing at the end of the cylinder is not tight or there are defects like pinholes, refrigerant leakage may occur. This requires replacing the compressor or its components. 2. Expansion valve issues: The expansion valve or similar components may malfunction due to changes in refrigerant state. This is less likely to happen, but if it does, simply replacing it with a new one should suffice. Also, pay attention to the surface cooler, as it may develop pinholes or cracks.
A few days ago, my car's air conditioning was leaking gas and didn't cool at all when turned on. The cause might be aging seals or cracked hoses. Small components in the AC system tend to fail over time. For example, compressor seals may not be tight enough, or O-rings may fail, both of which can allow refrigerant gas to escape. Additionally, the condenser at the front of the car could be damaged by rocks, leading to leaks. I've checked some materials, and humid environments can accelerate corrosion. It's best to regularly inspect the AC system's pipe connections, or else driving in summer becomes unbearable. Once during maintenance, the mechanic reminded me that leaks not only reduce cooling efficiency but can also damage the compressor, increasing repair costs. Professional detection using fluorescent dye to locate leaks is more reliable. Now, I've developed the habit of a comprehensive check-up every year before summer starts.
