Wang, X, Thomas, D, Ge, Y et al. (14 more authors) (2018) Proceedings of Real Driving Emission (RDE) Measurement in China. In: SAE Technical Papers. WCX World Congress Experience, 10 Apr 2018 SAE International
Abstract
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 technic al 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 NO x 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.a pos- [95] and RPA, have been confirmed to have strong impacts on RDE NO x 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.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author produced version of a paper published in SAE Technical Papers. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number WUN International Partnership Fund |
Depositing User: | Symplectic Publications |
Date Deposited: | 25 May 2018 12:39 |
Last Modified: | 03 Oct 2018 00:39 |
Status: | Published |
Publisher: | SAE International |
Identification Number: | 10.4271/2018-01-0653 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:130255 |