轿车、客车上装设及改装的冷气装置,习惯上称为空调。对空调冷气系统性能、车厢内温度和湿度正常与否,是检修轿车空调故障的重要内容。除借助仪表检测外,用目视、耳听、手摸等方法来判断。其检修技巧是: 一、替代剂的影响与检修关系轿车空调采用R12制冷剂,自从保护臭氧层《国家方案》公布后,出现用R134a(即HFC134a)替代,或用R22、R134a直接替代R12系统。由于R22、R134a替代 Passenger cars, buses installed and modified air-conditioning installations, used to be called air conditioning. Air conditioning air-conditioning system performance, temperature and humidity inside the car is normal or not, is an important part of car air-conditioning maintenance problems. In addition to using instrument testing, with visual, ear, hand touch and other methods to judge. The overhaul skills are: First, the impact of alternative agents and maintenance relationship Car air conditioner with R12 refrigerant, since the protection of the ozone layer “national program” announced, there with R134a (ie HFC134a) alternative, or R22, R134a directly replace the R12 system. As R22, R134a alternative