DOI QR코드

DOI QR Code

Characteristics of Real-road Driving NOx Emissions from Korean Light-duty Vehicles regarding Driving Routes

주행경로에 따른 국내 소형자동차 실제도로 주행 질소산화물 배출량 특성

  • Oak, Seonil (Department of Energy System Engineering, Korea National University of Transportation) ;
  • Eom, Myoungdo (Transportation Pollution Research Center, National Institute of Environmental Research) ;
  • Lee, Jongtae (Transportation Pollution Research Center, National Institute of Environmental Research) ;
  • Park, Junhong (Transportation Pollution Research Center, National Institute of Environmental Research) ;
  • Kim, Jichul (Department of Energy System Engineering, Korea National University of Transportation) ;
  • Chon, Mun Soo (Department of Energy System Engineering, Korea National University of Transportation)
  • 옥선일 (한국교통대학교 에너지시스템공학과) ;
  • 엄명도 (국립환경과학원 교통환경연구소) ;
  • 이종태 (국립환경과학원 교통환경연구소) ;
  • 박준홍 (국립환경과학원 교통환경연구소) ;
  • 김지철 (한국교통대학교 에너지시스템공학과) ;
  • 전문수 (한국교통대학교 에너지시스템공학과)
  • Received : 2014.09.26
  • Accepted : 2014.10.15
  • Published : 2015.01.01

Abstract

Despite of recently strengthened vehicle emission regulations, NOx emissions are not decreased in urban areas because of discrepancies between certification emission test modes and real driving conditions. Thus, researches on RDE-LDV (Real-driving Emission-Light-duty Vehicle) have been conducted actively using PEMS (Portable Emissions Measurement Systems). In the present study, NOx emissions were measured for 5 Korean light duty vehicles for real driving conditions including city, combined, highway, and up-downhill test route. Emission characteristics were analyzed for averaged NOx emissions per unit driving distance of each driving test routes. Furthermore, MAW (Moving Average Window) method based on $CO_2$ emissions from WLTC, which will be supported for EU regulations, was utilized. It was revealed that DRs (deviation ratios) for diesel vehicles (i.e., 5.1 ~ 8.4) were greater than gasoline vehicles (less than 0.15). Especially DR of diesel vehicle for up-downhill test route was 8.4, which indicates severe NOx emissions.

Keywords

References

  1. National Institute of Environmental Research, National Air Pollutants Emission 2010, NIERGP 2012-318, 2012.
  2. Seoul Metropolitan Government, Seoul Air Quality Information, http://cleanair.seoul.ac.kr, 2014.
  3. EEA, European Union Emission Inventory Report 1990-2008 under the UNECE Convention on Long-Range Transboundary Air Pollution (LRTAP), EEA Technical Report No. 7/2010, 2010.
  4. EEA, Exceedance of Air Quality Limit Values in Urban Areas (CSI 004) - Assessment Published Dec. 2009, http://www.eea.europa.eu/data-andmaps/indi cators/exceedance-of-air-quality-limit-1/exceedance-of-air-quality-limit-1, 2014.
  5. DEFRA (Department for Environment, Food and Rural Affairs of UK), NOx/$NO_2$ Emissions and Concentrations Research Project 2010, DEFRA Report, 2010.
  6. CARS21 High Level Group, On the Competitiveness and Sustainable Growth of the Automotive Industry in the European Union, Final Report, 2012.
  7. US EPA, Motor Vehicle Emissions Federal Test Procedure Revisions; Final Regulations, Federal Register, Vol.61, No.205, pp.54851-54906, 1996.
  8. L. Pelkmans and P. Debal, "Comparison of Onroad Emissions with Emissions Measured on Chassis Dynamometer Test Cycles," Transportation Research Part D, Vol.11, Issue 4, pp.233-241, 2006. https://doi.org/10.1016/j.trd.2006.04.001
  9. M. Weiss, P. Bonnel, R. Hummel, A. Provenza and U. Manfredi, "On-road Emissions of Lightduty Vehicles in Europe," Environmental Science and Technology, Vol.45, pp.8575-8581, 2011. https://doi.org/10.1021/es2008424
  10. M. Weiss, P. Bonnel, R. Hummel, U. Manfredi, R. Colombo, G. Lanappe, P. Le Lijour and M. Sculati, Analyzing On-road Emisions of Lightduty Vehicles with Portable Emissions Measurement Systems (PEMS), JRC Scientific and Technical Reports, EUR 24697 EN, 2011.
  11. M. Weiss, P. Bonnel, R. Hummel and N. Steininger, A Complementary Emissions Test for Light-duty Vehicles: Assessing the Technical Feasibility of Candidate Procedures, JRC Scientific and Policy Reports, EUR 25572 EN, 2013.
  12. National Institute of Environmental Research, An Evaluation of Real-driving Emissions for Light Duty Vehicles Using PEMS, Korean Autooil Program, Administrative Publication, No.11-1480554-000004-01, 2012.
  13. J. Park, J. Lee, S. Kim, J. Kim and K. Ahn, "A Study on the Emission Characteristics of Korean Light-duty Vehicles in Real-road Driving Conditions," Transactions of KSAE, Vol.21, No.6, pp.123-134, 2013. https://doi.org/10.7467/KSAE.2013.21.6.123
  14. T. Lee, J. Kim, J. Park, S. Jeon, J. Lee and J. Kim, "Influence of Driving Routes and Seasonal Conditions to Real-driving NOx Emissions from Light Diesel Vehicles," Transactions of KSAE, Vol.22, No.1, pp.148-156, 2014. https://doi.org/10.7467/KSAE.2014.22.1.148
  15. National Institute of Environmental Research, A Study on the Evaluation System Introduction of Real Driving Emission for Light-duty Vehicles, NIER-2014-051, 2014.
  16. T. G. Vlachos, P. Bonnel, A. Perujo, M. Weiss, P. M. Villafuerte and F. Riccobono, "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 International Journal of Commercial Vehicles, Vol.7, Issue 1, pp.199-215, 2014. https://doi.org/10.1504/IJVS.2014.060166
  17. J. Demuynck, D. Bosteels, M. De Paepe, C. Favre, J. May and S. Verhelst, "Recommendations for the New WLTP Cycle Based on an Analysis of Vehicle Emission Measurements on NEDC and CADC," Energy Policy, Vol.49, pp.234-242, 2012. https://doi.org/10.1016/j.enpol.2012.05.081