Research on the accurate sampling position of non-regulated emissions

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Yu, Quanshun^1 ; Xu, Junhui^1 ; Guo, Yong^1 ; Xu, Dandan^1 ; Zhang, Peng^1

China Automotive Technology and Research Center Co.Ltd, Tianjin

300300, China^1

关键词: Constant volumes;    Gas pump;    Regulated emissions;    Sampling bags;    Sampling positions;    Test errors;    Test vehicle;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/5/052013/pdf
DOI  :  10.1088/1755-1315/227/5/052013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper selected several test vehicle, and collected the samples at constant volume sampler (CVS) tunnel, sampling bag, and exit of the gas pump respectively, and analysed the carbonyls using high performance liquid chromatography (HPLC). The result shows that the gas at the sampling bag is uniform and stable in concentration, compared with that at the tunnel and the gas pump exit; it is the right site to collect the non-regulated emissions to reduce the test error and improve the precision.