Low pressure 0.3-0.5Mpa, high pressure1.6-1.8mpa. Beatre bus compressor power low pressure 0.3-0.5Mpa, high pressure1.6mpa.. The compressor can automatically adjust the power output according to the set temperature. The air conditioning control system does not collect the temperature signal of the evaporator outlet, but controls the compression ratio of the compressor according to the pressure change signal in the air conditioning pipeline, and automatically adjusts the outlet temperature. In the whole refrigeration process, the compressor has been working, and the adjustment of refrigeration intensity depends entirely on the pressure regulating valve installed inside the compressor.