Study of durability of diesel vehicle emissions performance based on real driving emission measurement

• Published in: Chemosphere (Oxford) Vol. 297; p. 134171
• Main Authors: Hao, Lijun, Zhao, Zhouhui, Yin, Hang, Wang, Junfang, Li, Lanju, Lu, Wenhui, Ge, Yunshan, Sjödin, Åke
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.06.2022
• Subjects: Deterioration factor; Diesel vehicle; Emission durability; Real driving emission; Deterioration factor; Emission durability; Diesel vehicle; Real driving emission
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2022.134171

Diesel vehicle emissions generally deteriorate with vehicle mileage due to the wear and deterioration of vehicle parts. Most of the experimental studies on vehicle emission durability were carried out based on the standard operation cycles of engine or vehicle, few research investigated vehicle emission deterioration characteristics under real driving conditions. In this research, the real driving emission (RDE) test method was used to investigate and evaluate the emission deterioration characteristics of two China-V diesel vehicles equipped with DOC and SCR systems. The experimental results show the emissions of CO and NOx from the N2 and N3 diesel vehicles increase with the vehicle mileage, showing the tendency of emission deterioration. The calculated deterioration factors of N2 and N3 diesel vehicle CO and NOx emissions are greater than the recommended values in China standard HJ 438–2008, which means experimental study on the vehicle emissions durability is necessary. The vehicle emissions deterioration depends on real driving conditions and the vehicle usage over vehicle lifetime. Diesel vehicle emissions generally deteriorate with vehicle mileage due to the wear and deterioration of vehicle parts. The experimental results show the exhaust emissions from diesel vehicles increase with the vehicle mileage, showing the tendency of emission deterioration. [Display omitted] •The emissions of two China-Ⅴ diesel vehicles were investigated to evaluate the durability of emissions performance.•The work-based window method was used to process RDE data.•The emissions of CO and NOx from the N2 and N3 diesel vehicles increase with the vehicle mileage.•The calculated deterioration factors of N2 and N3 diesel vehicle emissions are greater than the recommended values.