近年来,世界上大多数轿车都装有各种废气污染物控制装置。虽然各个国家车辆所遵循的排放标准各自不同,但各种车辆使用的废气排放控制装置却很相似。几种常用的维修方法对于装有排放控制装置的汽车也完全适用。有的控制装置尽管相当复杂,但这是十分必要的因为有的装置失灵不仅增加环境污染,还会影响车辆性能和燃料经济性。下面谈一下常见的这类装置的故障及其维修方法。 In recent years, most cars in the world are equipped with various exhaust pollutant control devices. Although the emission standards followed by vehicles vary from country to country, the emission control devices used by various vehicles are very similar. Several commonly used methods of repair are also suitable for vehicles equipped with emission control devices. Although some control devices are quite complicated, it is very necessary because some device failures not only increase the environmental pollution, but also affect vehicle performance and fuel economy. Now talk about the common failure of such devices and their maintenance methods.