After pressing the air conditioning button, the compressor clutch will engage, and the engine will drive the compressor to run at this time, so the body shake is normal. When cooling, the air compressor of the automobile needs to work, and the air compressor of the automobile is driven by the engine. When cooling, the engine drives the compressor to run. At this time, the compressor can continuously compress the refrigerant and transport it to the evaporation box. The volume of the refrigerant in the evaporation box will expand, so that the refrigerant absorbs heat and cools the evaporation box. The cooling evaporation box can cool the air blown by the blower and make the air conditioner outlet blow cold air. The refrigerant used in automobile air regulations is r 134a, which needs to be replaced regularly. If it is not replaced for a long time, it will lead to the phenomenon that the refrigeration effect of automobile air conditioner becomes worse and the refrigeration speed becomes slower. When replacing the refrigerant, you need to go to a professional store and use professional equipment to replace it. The owner can't change the refrigerant himself. The ac key is the air switch of the automobile refrigeration switch. After pressing the air conditioning key, the compressor clutch will be engaged, and then the engine will drive the compressor to run. When heating, you don't need to press AC key. Heating has nothing to do with compressor, refrigerant and evaporation box. When the automobile air conditioner is heating harmoniously, the high-temperature coolant in the engine will flow through the warm water tank, and the wind from the blower will also pass through the warm water tank, so that the air outlet can be adjusted to blow out warm air.
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