【摘要】 对怠速工况下使用乙醇汽油汽车尾气中污染物进行了检测。结果表明,使用乙醇汽油后,汽车尾气中CO和HC浓度明显降低,平均下降率为56.9%和38.2%;NOx平均下降率为15.0%;CO2浓度平均增长率为5.04%;苯系物浓度明显降低,平均下降率在45.5%~53.1%;醛类的浓度增加明显,平均增长率在47.8%~293%;丙酮、丁酮的浓度增加,分别为16.6%和25.3%。更多还原

【Abstract】 The pollutants were detected from tail gas after Vehicles used the ethanol gasoline under idling condition.The result showed that the contents of carbon monoxide and hydrocarbon decreased remarkably,and the average rates were 56.9 % and 38.2% separately,the NOx dropped 15.0 %,average growth rate of the carbon dioxide was 5.04%,the contents of aromatic compounds fell from 45.5% to 53.1%.The content of aldehydes increased obviously and average growth rates in 47.8 % ~ 293 %,the average growth rates of acetone and butanone increased 16.6 % and 25.3 % respectively.更多还原