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Proceedings of Real Driving Emission (RDE) Measurement in China
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Light-duty China-6, which is among the most stringent vehicle exhaust emission standards globally, mandates the monitoring and reporting of real driving emissions (RDE) from July, 2023. In the process of regulation promulgation and verification, more than 300 RDE tests have been performed on over 50 China-5 and China-6 certified models. This technical paper endeavors to summarize the experience of RDE practice in China, and discuss the impacts of some boundary conditions (including vehicle dynamic parameters, data processing methods, hybrid propulsion and testing altitude) on the result of RDE measurement. In general, gasoline passenger cars confront few challenges to meet the upcoming RDE NOx requirement, but some China-5 certified samples, even powered by naturally-aspirated engines may have PN issues. PN emissions from some GDI-hybrid powertrain systems also need further reduction to meet China-6 RDE requirements. Vehicle dynamic parameters, both v.apos- and RPA, have been confirmed to have strong impacts on RDE NOx and PN emissions. Data processing methods, namely moving average windows (MAW) and power-binning (BIN), output quite similar emission factors if engine-stop, warm-up and idle are excluded from the calculation. Testing altitude up to 2400 m shows evident influence on RDE measurement, however, no clear correlation between altitude and RDE emissions can be concluded so far.
- Xin Wang - Beijing Institute of Technology
- Daisy Thomas - University of Leeds
- Yunshan Ge - Beijing Institute of Technology
- Wenlin Yu - Beijing Institute of Technology
- Bin Song - Beijing Institute of Technology
- Xiaoliu Xu - Beijing Institute of Technology
- Sikai Zheng - Beijing Institute of Technology
- Zhengjun Yang - Beijing Institute of Technology
- Sheng Su - Beijing Institute of Technology
- Huiming Gong - Beijing Institute of Technology
- Shihua Yuan - Beijing Institute of Technology
- Hongwen HE - Beijing Institute of Technology
- Junqiang Xi - Beijing Institute of Technology
- Bingzheng Fu - Beijing Institute of Technology
- Hang Yin - Vehicle Emission Control Center, MEP
- Weicheng Chen - Vehicle Emission Control Center, MEP
- Hu Li - University of Leeds
CitationWang, X., Thomas, D., Ge, Y., Yu, W. et al., "Proceedings of Real Driving Emission (RDE) Measurement in China," SAE Technical Paper 2018-01-0653, 2018, https://doi.org/10.4271/2018-01-0653.
Data Sets - Support Documents
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- Thomas, D. et al., “A Comparison of Tailpipe Gaseous Emissions for RDE and WLTC Using SI Passenger Cars,” , 2017, doi:10.4271/2017-01-2391.
- May, J.,Bosteels, D., andFavre, C., “An Assessment of Emissions from Light-Duty Vehicles Using PEMS and Chassis Dynamometer Testing,” SAE Int. J. Engines 7(3), 2014, doi:10.4271/2014-01-1581.
- Merkisz, J.,Pielecha, J.,Bielaczyc, P., andWoodburn, J., “Analysis of Emission Factors in RDE Tests as Well as in NEDC and WLTC Chassis Dynamometer Tests,” SAE Technical Paper 2016-01-0980, 2016, doi:10.4271/2016-01-0980.
- Merkisz, J.,Pawel, F.,Lijewski, P., andBielaczyc, P., “The Comparison of the Emissions from Light Duty Vehicle in On-Road and NEDC Tests,” SAE Technical Paper 2010-01-121-12, 2010, doi:10.4271/2010-01-1298.