论文部分内容阅读
环境污染问题是汽车工业发展的巨大困扰。我国环境监测数据表明，汽车尾气排放量是城市大气污染的主要来源之一。北京市机动车尾气排放对大气污染物中ＣＯ、ＨＣ、ＮＯｘ的分担率分别是６３．４％。７３．５％和４６％，在非采暖期这一分担率更高，分别为８０．３％，７９.１％
Environmental pollution is a huge disturbance to the development of automobile industry. China’s environmental monitoring data show that automobile exhaust emissions are one of the major sources of urban air pollution. The share of motor vehicle exhaust emissions in Beijing on CO, HC and NOx in air pollutants is 63.4%. 73.5% and 46%, respectively, with a higher share of non-heating period, accounting for 80.3% and 79.1% respectively