Working principle of automobile compressor

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The role of the automobile compressor is to transform the low-temperature, low-pressure gaseous refrigerant from the evaporator into a high-temperature, high-pressure gaseous refrigerant through compression and send it to the condenser.

To put it simply: there is a cylinder inside the automobile air-conditioning compressor. The cylinder has a one-way valve made of very thin steel sheet and sealed with refrigerated oil. Usually the compressor does not work when the engine is rotating, and only when the air conditioner is turned on does the electromagnetic clutch draw the compressor and the pulley, and the cylinder compresses the refrigerant to circulate.

Working principle of automobile air-conditioning compressor

The compressor of the automobile air conditioning system is directly driven by the engine, which is realized by a belt drive mechanism. When the compressor is not working, the compressor can be disconnected from the engine, which is realized by an electronic clutch. When the air-conditioning system stops working, you should always check the tightness of the belt to determine whether the clutch action is correct. Sometimes the clutch affects the compressor shaft seal due to damage to the bearing, causing refrigerant leakage at the compressor shaft seal.

The working principle of the fixed displacement compressor is to increase in proportion to the engine speed. This kind of compressor cannot automatically output the power of the hundred years according to the demand of air conditioning during operation. At the same time, it is in use. The fuel consumption of the engine is relatively large. The fixed displacement compressor also collects the temperature of the air outlet of the evaporator. When the temperature reaches the set value, its compressor electromagnetic clutch will be released and the compressor will stop working.

The variable displacement compressor is like the inverter air conditioner in the household air conditioner. It can automatically adjust the output power according to the set temperature. The air conditioner control system does not need to collect the temperature of the evaporator outlet, but uses the pressure in the air conditioner pipeline. The change of the compressor is used to control the speed of the compressor to adjust the temperature of the air outlet. The compressor has been working during the whole process, and the refrigeration intensity of the air conditioner is all controlled by a pressure regulating valve installed inside an old compressor.

The compressor of the automobile air conditioning system is directly driven by the engine, which is realized by a belt drive mechanism. When the compressor is not working, the compressor can be disconnected from the engine, which is realized by an electronic clutch. When the air-conditioning system stops working, you should always check the tightness of the belt to determine whether the clutch action is correct. Sometimes the clutch affects the compressor shaft seal due to damage to the bearing, causing refrigerant leakage at the compressor shaft seal.

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