Abstract: Automobile air conditioning system is an important part of the automobile, can provide people with comfortable driving experience. In order to improve the stability of the automobile air-conditioning system and ensure that people can have a good driving and riding experience in the automobile driving, the structure and working principle of the automobile air-conditioning system are described, the common faults of the automobile air-conditioning system such as non cooling, insufficient cooling capacity and unstable cooling effect are analyzed, the corresponding solution is put forward, and the fault diagnosis method of air conditioning is given. It provides correct guidance for the use and maintenance of automobile air-conditioning system for automobile drivers and maintenance personnel to improve the use effect of automobile air-conditioning system.

Key words: Automobile air conditioning system; Working principle; Fault diagnosis; Maintenance method

摘要： 汽车空调系统是汽车重要的组成部分，可以为人们提供舒适的乘驾体验。为了提高汽 车空调系统的稳定性，保证人们在汽车驾驶中能够具有良好的驾乘体验，文章对汽车空调系 统的结构及工作原理进行了阐述，对汽车空调系统常见的空调不制冷、制冷量不足以及制冷 效果不稳定等故障进行了分析，提出了相应的解决方案，同时给出了空调故障的诊断方法， 给汽车驾驶人员及汽车维修人员对汽车空调的使用与维修提供了正确的指导，以提高汽车空 调系统的使用效果。

关键词: 汽车空调系统；工作原理；故障诊断；维修方法