【摘要】 随着环境污染的日趋扩大化,对人类及社会发展造成了严重的危害。基于由汽车排放所导致的PM2.5污染成为日益严重的问题,因此,对汽车排放导致的PM2.5造成的大气污染问题的研究引起了人们的关注。本课题研究以不同排量,同车型在怠速工况法正常工作时所产生的汽车尾气中的PM2.5浓度进行对比分析,从而为汽车尾气中PM2.5检测方法提供依据。查询统计结果可知,目前汽油车的占有量远大于柴油车和混合动力汽车及电动车,作为PM2.5污染源之一的汽车尾气,汽油车的排放有直接关系,由此提出对汽油机汽车排放PM2.5做相关研究,针对如何收集尾气,对所收集尾气进行分析寻求汽油车尾气中PM2.5的变化规律,以期从根源减少PM2.5的排放,减轻对环境的污染。更多还原

【Abstract】 In recent years,the inventory of country’s vehicle is more than 200 million; Motor vehicle exhaust has been a major factor in the fog haze,photochemical smog and other air pollution. At present,the detection method for automobile exhaust pollutant is mainly two- speed idle and BASM in our country. However,these two detection methods and standard of limit on car exhaust PM2. 5 has not been involved yet. The problem caused by the automobile exhaust PM2. 5 pollution is growing,therefore,the study of atmospheric pollution caused by PM2. 5 in the automobile exhaust affracted people’s attention. The detection method is the first study which is worthwhile to content. The results of the testing programs feasilbility and the factors that influence the effectiveness of the detection methods are analyzed to identify the variation of the exhaust PM2. 5 and balance point; Detect typical automobile exhaust malfunction’s affection to concentrations of PM2. 5 and analysis its correlation. Presents experimental basis for Automobile exhaust PM2. 5 detected in the actual application.更多还原