What is Refrigeration Oil in a Car?
2 Answers
Refrigeration oil in a car is the lubricating oil for the moving parts inside the refrigeration compressor. The functions of refrigeration oil are: 1. Lubrication: The compressor is a high-speed moving machine. The surfaces of components such as bearings, pistons, piston rings, connecting rods, and crankshafts require lubrication to reduce resistance and wear, extend service life, lower power consumption, and improve the refrigeration coefficient. 2. Sealing: The compressors used in cars are semi-closed. The input shaft of the compressor requires an oil seal to prevent refrigerant leakage. 3. Cooling: The friction surfaces of the compressor generate high temperatures, which need to be cooled by refrigeration oil. Insufficient cooling can lead to compressor overheating, excessive exhaust pressure, reduced refrigeration coefficient, or even burning out the compressor. 4. Noise reduction: Refrigeration oil can improve the frictional resistance of the compressor's mechanical moving parts, provide good lubrication conditions, and reduce the operating noise of the compressor.
Speaking of refrigeration oil, in my impression, this stuff is actually an essential lubricant in a car's air conditioning system. I remember last summer when I was driving on a trip, the AC suddenly stopped blowing cold air. After taking it to the shop, the mechanic said the refrigeration oil was too low. It's added inside the compressor and serves to reduce internal friction, seal components, and also helps with heat dissipation, preventing the system from overheating and getting damaged. The refrigeration oil works mixed with the refrigerant, and if the oil deteriorates or the quantity is insufficient, the cooling efficiency drops significantly. Over time, the entire compressor might even need replacement. I drive quite a lot, so now I've made it a habit to have a technician check the refrigeration oil condition every year before summer starts. This way, I avoid breaking down on the roadside during hot weather, saving both money and hassle. In short, although it may seem like a small thing, it affects driving comfort and shouldn't be overlooked.
