汽车空调装置主要用来实现对车厢内空气的换气、加热、冷却和除湿,同时也有净化空气的作用。在汽车空调装置各系统中,制冷系统的技术最为复杂,它是汽车空调装置中具有代表性的主要总成。要使制冷系统发挥其应有的作用,每年必须对它进行必要的维护。而要高质量地维护好制冷系统,则必须熟知其结构原理及各元件在车上的安装位置,了解各元件的性能以及正常与失常时表现出的具体特征。 Car air conditioning unit is mainly used to achieve the ventilation of the air inside the car, heating, cooling and dehumidification, but also the role of air purification. In the car air-conditioning system, refrigeration system technology is the most complex, it is a car air-conditioning unit representative of the main assembly. It is imperative that the refrigeration system be properly maintained every year for its proper function. In order to maintain the refrigeration system with high quality, it is necessary to be familiar with the principle of the structure and the installation position of each component in the vehicle, and to understand the performance of each component as well as the specific characteristics of normal and abnormal display.