近期国内持续的雾霾天气再次敲响环境保护的警钟。虽然目前,对雾霾的成因积理尚无足够权威的数据解析,但是各界比较一致的看法是对于北京等大城市本地贡献的雾霾来说,机动车尾气排放是重要因素之一。例如,中科院大气物理所研究员王跃思近日在北京表示:“北京大气灰霾污染主要形成于周边工业燃煤污染排放输送,加强于本地机动车交通污染排放。重霾污染的应急控制方向不言而喻,就是削减周边燃 Recent domestic fog haze weather once again ringing the alarm of environmental protection. Although there is not enough authoritative data to analyze the cause of smog at present, the consensus of all walks of life is that the emission of motor vehicle exhaust is one of the most important factors for the local contribution to the haze of big cities such as Beijing. For example, Wang Yuesi, a researcher at the Institute of Atmospheric Physics of the Chinese Academy of Sciences, recently said in Beijing: ”Atmospheric haze pollution in Beijing is mainly formed in the discharge of coal-fired industrial pollutants from surrounding industries and is intensified in the traffic pollution emission of local motor vehicles. Yu, is to reduce the surrounding burning