西安市在用汽油车排放特性研究

Research on Emission Characteristics of Gasoline Vehicles in Xi’an

为分析西安市在用汽油车的排放水平,文章对在用汽油车排气污染物浓度与其车龄进行相关性研究。通过对数据的处理分析,得出CO、HC、NO的排放值与车龄的回归公式及各公式的决定系数R2值。结果表明:6年车龄以上的被测车辆,其3种污染物排放值随车龄的增加而快速升高。

In order to analyze the emission level of gasoline vehicles in Xi’an, this paper studies the correlation between the exhaust pollutant concentration of gasoline vehicles and their vehicle age. Through the processing and analysis of the data, the regression formula of CO, HC, NO emission values and vehicle age and the determination coefficient R2 value of each formula are obtained. The results show that the emission values of the three pollutants of the tested vehicles over 6 years old increase rapidly with the increase of the vehicle age.