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Comparison of Data Analysis Methods for European Real Driving Emissions Regulation
Technical Paper
2017-01-0997
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The gap between regulated emissions from vehicle certification procedures and real-world driving has become increasingly wider, particularly for nitrogen oxides (NOx). Even though stricter emission regulations have been implemented, NOx emissions are dependent on specific, short-duration driving events which are difficult to control, therefore high concentrations of these pollutants are still being measured in European cities. Under certification procedures, vehicle emissions compliance is evaluated through standards, recurring to driving cycles performed on chassis dynamometer under controlled laboratory conditions. Different countries use different standard cycles, with the US basing their certification cycle on FTP-75 and Europe using NEDC (Euro 5/6c)/WLTP (Euro 6d). However, the representativeness of standard driving cycles has been under discussion and, consequently, new updates on the light duty regulation from the European Commission include a Real Driving Emissions (RDE) Regulation, establishing that vehicle emissions must be measured on the road with a Portable Emission Measurement System (PEMS). However, RDE tests have shown weak points, namely regarding testing boundary conditions and data analysis methods. Moreover, reproducibility of tests is hardly achievable and both dynamic and environmental boundaries (such as ambient condition, route, etc.) are unique for a specific geographical location, which can be representative for one location but not for another test-site. On-road data analysis methodology is defined by the European Commission, with two main methods are being tested: the Moving Averaging Window (MAW); and the Power Binning (PB). As result, the scope of this study was to evaluate the RDE data analysis methods, including the Vehicle Specific Power methodology (used on MOVES model), applied to 1 Hz on-road data from 3 vehicle propulsion technologies (spark-ignition, compression-ignition and hybrid), collected in Lisbon, Portugal. This approach allowed analyzing and identifying the differences between the methods for each vehicle propulsion technology. Regarding total CO2 emissions and NOx emissions, the application of the methods indicates that the MAW provides an overall difference of around 7% for CO2 and 10% for NOx comparing with the PB method. The PB is conceptually similar to VSP, although an overall 10% for CO2 and 19% for NOx difference was found. Differences on the methods results are due to the use of different approaches and, consequently, lead to different results, which are more explained on this paper.
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Varella, R., Duarte, G., Baptista, P., Sousa, L. et al., "Comparison of Data Analysis Methods for European Real Driving Emissions Regulation," SAE Technical Paper 2017-01-0997, 2017, https://doi.org/10.4271/2017-01-0997.Data Sets - Support Documents
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References
- European Comission Statistical Pocketbook 2016 - EU Transport in Figures Publications Office of the European Union 2016
- ICCT European Vehicle Market Statistics - Pocketbook 2015/16 ICCT Report 2015
- Vlachos , T. , Bonnel , P. , Weiss , M. , Giechaskiel , B. , Riccobono , F. , Mendoza-Villafuerte P. , Perujo , A. The Euro 6 Real - Driving Emissions ( RDE ) procedure for light - duty vehicles : Effectiveness and practical aspects 37th Int. Vienna Mot. Symp. 1 20 2016
- Vlachos , T. , Bonnel , P. , Perujo , A. , Weiss , M. et al. In-Use Emissions Testing with Portable Emissions Measurement Systems (PEMS) in the Current and Future European Vehicle Emissions Legislation: Overview, Underlying Principles and Expected Benefits SAE Int. J. Commer. Veh. 7 1 199 215 2014 10.4271/2014-01-1549
- Fontaras , G. , Franco , V. , Dilara , P. , Martini , G. , Manfredi , U. Development and review of Euro 5 passenger car emission factors based on experimental results over various driving cycles Sci. Total Environ. 468-469 October 2013 1034 1042 2014
- Andersson , J. , May , J. , Favre , C. , Bosteels , D. et al. On-Road and Chassis Dynamometer Evaluations of Emissions from Two Euro 6 Diesel Vehicles SAE Int. J. Fuels Lubr. 7 3 919 934 2014 10.4271/2014-01-2826
- ICCT From laboratory to road ICCT Report 2015
- Díaz , S. , Tietge , U. , Mock , P. CO 2 emissions from new passenger cars in the EU : Car manufacturers’ performance in 2015 ICCT Briefing 2016
- Mock , P. , Kühlwein , J. , Tietge , U. , Franco , V. , Bandivadekar , A. , German , J. The WLTP: How a new test procedure for cars will affect fuel consumption values in the EU ICCT Working Paper 2014-9 2014
- Bielaczyc , P. , Woodburn , J. , and Szczotka , A. Exhaust Emissions of Gaseous and Solid Pollutants Measured over the NEDC, FTP-75 and WLTC Chassis Dynamometer Driving Cycles SAE Technical Paper 2016-01-1008 2016 10.4271/2016-01-1008
- Duarte , G. , Gonçalves , G. , Farias , T. Analysis of fuel consumption and pollutant emissions of regulated and alternative driving cycles based on real-world measurements Transp. Res. Part D Transp. Environ. 44 43 54 2016
- UNECE (United Nations Economic Commission for Europe) Addendum 82: Regulation No. 83 Revision 4 - Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirements United Nations and European Union 2010
- Duarte , G. , Gonçalves , G. , Baptista , P. , Farias , T. Establishing bonds between vehicle certification data and real-world vehicle fuel consumption - A Vehicle Specific Power approach Energy Convers. Manag. 92 251 265 2015
- Ciuffo , B. , Tutuianu , M. The development of the World-wide Harmonized Test Procedure for Light Duty Vehicles ( WLTP ) and the pathway for its implementation into the EU legislation TRB 2015 Annual Meeting 2015
- Sileghem , L. , Bosteels , D. , May , J. , Favre , C. , Verhelst , S. Analysis of Vehicle Emission Measurements on the New WLTC, the NEDC and the CADC Transp. Res. Part D Transp. Environ. 32 0 70 85 2014
- Weiss , M. , Bonnel , P. , Hummel , R. , Manfredi , U. , Colombo , R. , Lanappe , G. , Le Lijour , P. , Sculati , M. Analyzing on-road emissions of light-duty vehicles with Portable Emission Measurement Systems ( PEMS ) JRC Scientific and Technical Reports 2011
- Weiss , M. , Bonnel , P. , Kühlwein , J. , Provenza , A. , Lambrecht , U. , Alessandrini , S. , Carriero , M. , Colombo , R. , Forni , F. , Lanappe , G. , Le Lijour , P. , Manfredi , U. , Montigny , F. , Sculati , M. Will Euro 6 reduce the NO x emissions of new diesel cars? - Insights from on-road tests with Portable Emissions Measurement Systems (PEMS) Atmos. Environ. 62 2 657 665 2012
- Duarte , G. A methodology to estimate vehicle fuel consumption and pollutant emissions in real-world driving based on certification data PhD Thesis Instituto Superior Técnico Lisbon/Portugal 2013
- Samaras , Z. Update on the European PEMS activities for the assessment of real driving emissions (RDE) PEMS 2015 Int. Conf. Work UC Riverside, USA 2015
- Prati , M. , Meccariello , G. , Della Ragione , L. , and Costagliola , M. Real Driving Emissions of a Light-Duty Vehicle in Naples. Influence of Road Grade SAE Technical Paper 2015-24-2509 2015 10.4271/2015-24-2509
- Suarez-Bertoa , R. , P. Mendoza-Villafuerte , P. , Bonnel , P. , Lilova , V. , Hill , L. , Perujo , A. , Astorga , C. On-road measurement of NH3 and N2O emissions from a Euro V heavy-duty vehicle Atmos. Environ. 139 2 167 175 2016
- Hausberger , S. , Lipp , S. Evaluation Methods for Real Drive Emission Tests of LDV for a Future Legislation Emissions in Real Driving Situations Demands for PEMS-Tests at LDV Institute for Internal Combustion Engines and Thermodynamics TU Graz 2016
- Mendes , M. , Duarte , G. , Baptista , P. Introducing specific power to bicycles and motorcycles: Application to electric mobility Transp. Res. Part C Emerg. Technol. 51 2 120 135 2015
- Baptista , P. , Pina , A. , Duarte , G. , Rolim , C. , Pereira , G. , Silva , C. , Farias , T. From on-road trial evaluation of electric and conventional bicycles to comparison with other urban transport modes: Case study in the city of Lisbon, Portugal Energy Convers. Manag. 92 10 18 2015
- Alves , J. , Baptista , P. , Gonçalves , G. , Duarte , G. Indirect methodologies to estimate energy use in vehicles: Application to battery electric vehicles Energy Convers. Manag. 124 x 116 129 2016
- Duarte , G.O. , Varella , R.A. , Gonçalves , G.A and Farias , T.L. Effect of battery state of charge on fuel use and pollutant emissions of a full hybrid electric light duty vehicle J. Power Sources 246 377 386 2014
- Varella , R. , Gonçalves , G. , Duarte , G. , and Farias , T. Cold-Running NOx Emissions Comparison between Conventional and Hybrid Powertrain Configurations Using Real World Driving Data SAE Technical Paper 2016-01-1010 2016 10.4271/2016-01-1010
- European Commission EMROAD - Users Guide - Version 5.90 Joint Research Center (JRC-EC) 2015
- Lipp , S. , Hausberger , S. CLEAR User Guide for Version 2.0 TU Graz 2016
- European Commission Commission Regulation (EU) 2016/427 of 10 March 2016 amending Regulation (EC) No 692/2008 as regards emissions from light passenger and commercial vahicles (Euro 6) Official Journal of the European Union 2016
- Jimenez-Palacios , J. Understanding and quantifying motor vehicle emissions with vehicle specific power and TILDAS remote sensing PhD Thesis Massachusetts Institute of Technology USA 1998
- Khan , T. , Frey , H. C. Evaluation of Light Duty Gasoline Vehicle Rated Fuel Economy based on in- use Measurements 7908 919 21 29 2016
- Frey , H. , Unal , A. , Chen , J. , Li , S. , Xuan , C. Methodology for developing modal emission rates for EPA’s multi-scale motor vehicle & equipment emission system State Univ. US EPA Ann Arbor, MI October 18 20 2002
- Kadijk , G. , Ligterink N. Road load determination of passenger cars TNO Report R10237 2012
- Heywood , J. Internal Combustion Engine Fundementals 21 McGraw-Hill 1988