1. According to the driving mode, it is divided into independent type (a dedicated engine-driven compressor, large cooling capacity, stable work, but high cost, large volume and weight, mostly used in large and medium-sized passenger cars) and non-independent (air-conditioning compressor) Driven by the automobile engine, the refrigeration performance is greatly affected by the engine's work, and the stability is poor. It is mostly used in small passenger cars and cars).
2. According to the air-conditioning performance, it is divided into: single-function type (install cooling, heating, and ventilation systems separately, operate separately, without interference, and mostly used in large passenger cars and trucks) and integrated cooling and heating (cooling, heating, and ventilation sharing The blower and the air duct are controlled on the same control panel, and can be divided into a combined type where the cold and warm air work separately and a mixed temperature regulation type where the cold and warm air can work at the same time. The mixed temperature regulation type is mostly used for cars.
3. According to the control mode, it is divided into manual type (toggle the function keys on the control panel to control temperature, wind speed, and wind direction) and electronically controlled pneumatic adjustment (using the vacuum control mechanism. When the air conditioning function key is selected, you can Automatic control of temperature and air volume within temperature).
4. According to the adjustment method, it is divided into: automatic adjustment (using the calculation and comparison circuit to control the adjustment mechanism through the sensor signal and the pre-adjustment signal to automatically adjust the temperature and air volume) and the automatic adjustment controlled by the microcomputer (using the microcomputer as the control center to achieve The best control and adjustment of the air environment in the car in all directions and multiple functions).