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Impact of Demanding Low Temperature Urban Operation on the Real Driving Emissions Performance of Three European Diesel Passenger Cars
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 10, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
In Europe, the development and implementation of new regulatory test procedures including the chassis dynamometer (CD) based World Harmonised Light Duty Test Procedure (WLTP) and the Real Driving Emissions (RDE) procedure, has been driven by the close scrutiny that real driving emissions and fuel consumption from passenger cars have come under in recent times. This is due to a divergence between stated certification performance and measured on-road performance, and has been most pointed in the case of NOx (oxides of nitrogen) emissions from diesel cars. The RDE test is certainly more relevant than CD test cycles, but currently certification RDE cycles will not necessarily include the most extreme low speed congested or low temperature conditions which are likely to be more challenging for NOx after-treatment systems. To build understanding of the emissions and fuel consumption performance of the latest available diesel passenger cars, Concawe has conducted a study of the performance of three vehicle types. Two of the vehicles featured urea-dosed Selective Catalytic Reduction (SCR) after-treatment, whilst the third was fitted with a Lean NOx Trap (LNT) and a downstream passive SCR catalyst (pSCR). For each vehicle, triplicate tests were conducted over a moderate RDE on-road cycle, as well as CD testing of the Transport for London (TfL) Urban Inter Peak (UIP) cycle, developed directly from real-driving trips in the City of London, UK. The TfL UIP is considered a severe urban cycle and was run over ambient temperatures ranging from −15 °C to 23 °C. After the initial 2-3 minute warm up period, the SCR-equipped vehicles were effective at controlling NOx, while the LNT-equipped vehicle was more effective in the initial minutes of running. The data generated provides insights into the emissions performance of Euro 6 diesel passenger cars, and their after-treatment systems, in extreme congested cold urban conditions including, and beyond, the most demanding likely to be encountered under regulatory RDE testing.
- Rod Williams - Shell Global Solutions (UK)
- Jon Andersson - Ricardo Consulting Engineers Ltd. (UK)
- Heather Hamje - Concawe, Belgium
- Pauline Ziman - Shell Global Solutions (UK)
- Kenneth Kar - ExxonMobil Research and Engineering (USA)
- Corrado Fittavolini - Eni SpA, Italy
- Leonardo Pellegrini - Eni SpA, Italy
- Garry Gunther - Phillips 66, USA
- Fermin Oliva - Repsol, Spain
- Paul Van de Heijning - Kuwait Petroleum Res. & Tech. (Netherlands)
CitationWilliams, R., Andersson, J., Hamje, H., Ziman, P. et al., "Impact of Demanding Low Temperature Urban Operation on the Real Driving Emissions Performance of Three European Diesel Passenger Cars," SAE Technical Paper 2018-01-1819, 2018, https://doi.org/10.4271/2018-01-1819.
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- EU , “Directive 98/69/EC of the European Parliament and of the Council of 13. October 1998 Relating to Measures to be Taken against Air Pollution by Emissions from Motor Vehicles and Amending Council Directive 70/220/EEC,” Official Journal of the European Communities No. L350, Dec. 28, 1998.
- EU , “Directive 1999/96/EC of the European Parliament and of the Council of 13 December 1999 on the Approximation of the Laws of the Member States Relating to Measures to be Taken against the Emission of Gaseous and Particulate Pollutants from Compression Ignition Engines for Use in Vehicles, and the Emission of Gaseous Pollutants from Positive Ignition Engines Fueled with Natural Gas or Liquefied Petroleum Gas for Use in Vehicles and Amending Council Directive 88/77/EEC,” Official Journal of the European Communities No. L44, Feb. 16, 2000.
- Carslaw, D.C. et al. , “Recent Evidence Concerning Higher NOx Emissions from Passenger Cars and Light Duty Vehicles,” Atmos. Environ. 45:7053-7065, 2011.
- Chen, Y. and Borken-Kleefeld, J. , “Real Driving Emissions from Cars and Light Commercial Vehicle - Results from 13 Years Remote Sensing at Zurich/CH,” Atmos. Environ. 88:157-164, 2014.
- Weiss, M. et al. , “Will Euro 6 Reduce the NOx Emissions of New Diesel Cars? - Insights from on-Road Tests with Portable Emissions Measurement Systems (PEMS),” Atmos. Environ. 62:657-665, 2012.
- Yao, X. et al. , “The Use of Tunnel Concentration Profile Data to Determine the Ratio of NO2/NOx Directly Emitted from Vehicles,” Atmospheric Chemistry and Physics Discussions 5:12723-12740, 2005.
- Commission Regulation (EU) , “2016/427 of 10 March 2016 Amending Regulation (EC) No. 692/2008 as Regards Emissions from Light Passenger and Commercial Vehicles (Euro 6).”
- Commission Regulation (EU) , “2016/646 of 20 April 2016 Amending Regulation (EC) No. 692/2008 as Regards Emissions from Light Passenger and Commercial Vehicles (Euro 6).”
- Proposal Amending Directive 2007/46/EC, Commission Regulation (EC) No. 692/2008 and Commission Regulation (EU) 2017/1151 for the Purpose of Improving the Emission Type Approval Tests and Procedures for Light Passenger and Commercial Vehicles, Including Those for In-Service Conformity and Real-Driving Emissions and Introducing Devices for Monitoring the Consumption of Fuel and Electric Energy.
- Williams, R., Hamje, H., Andersson, J., Ziman, P. et al. , “Effect of Fuel Quality on Emissions over RDE and a Comparison of RDE and CD Test Emissions from Euro 6 Diesel Cars,” Proceedings of IMechE Internal Combustion Engines Conference, Dec. 2017, ISBN:978-0-9956263-2-4.
- Dwyer, H. et al. , “Emissions from a Diesel Car during Regeneration of an Active Diesel Particulate Filter,” Journal of Aerosol Science 41:541-552, 2010.
- Cichowicz, R. et al. , “Dispersion of Atmospheric Air Pollution in Summer and Winter Season,” https://dx.doi.org/10.1007%2Fs10661-017-6319-2.
- Siegberg, D. and Killinc, M. , “Thermal and Chemical Robustness of the Smart NOx Sensor,” CTI Exhaust Systems Conference, Mainz, Germany, Jan. 27-29, 2014.
- Williams, R., Hamje, H. et al. , “Effect of Diesel Properties on Emissions and Fuel Consumption from Euro 4, 5 and 6 European Passenger Cars,” SAE Technical Paper 2016-01-2246 , 2016, doi:10.4271/2016-01-2246.