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Influences of accumulated mileage and technological changes on emissions of regulated pollutants from gasoline passenger vehicles

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Journal of Environmental Sciences 2018年第9期30卷 197-206页

作者： Qingyu Zhang Juwang Fan Weidong Yang Fang Ying Zhen Bao Yi Sheng Cheng Lin Xuan Chen Department of Environmental Engineering College of Environmental and Resources Sciences Zhejiang University Hangzhou 310058 China Hangzhou Environmental Monitoring Center Station Hangzhou 310007 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012 China

In this study, the influences of accumulated mileage （deterioration） and technological changes （emission standards） on emission factors （EFs） of regulated pollutants （CO, HC, and NOx） from gasoline passenger vehicles were investigated based on Inspection and Maintenance （I/M） data using the chassis dynamometer method. The accumulated mileage of passenger vehicles was significantly linearly correlated with vehicle age. For most cases, the average EFs of CO, HC and NOx were significantly linearly correlated with accumulated mileage, indicating that emission deterioration had a significant impact on pollutant EFs. Implemented emission standards markedly influenced the EFs of regulated pollutants, and EFs markedly decreased with progressing emission standards. The present study also compared EFs of regulated pollutants between this study and the International vehicle emission （IVE） model, and marked differences in EFs were seen with variations in emission standards, vehicle types and accumulated mileage; NOx EFs in this study were higher than in the IVE model. The results provide new insight into estimating regulated pollutant emissions using the IVE model.

关键词： gasoline passenger vehicle I/M program Emission factor Emission standard Emission deterioration

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