Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Evaluation of Accelerated Retirement Program for In-use Diesel Vehicles based on their NOx Emission Characteristics

노후 운행경유차의 NOx 배출특성분석 및 조기폐차대책을 통한 삭감 방안 검토

  • 길지훈 (국립환경과학원 교통환경연구소) ;
  • 임윤성 (국립환경과학원 교통환경연구소) ;
  • 김형준 (국립환경과학원 교통환경연구소) ;
  • 노현구 (인덕대학교 기계자동차과) ;
  • 윤보섭 (국립환경과학원 교통환경연구소) ;
  • 이상은 (국립환경과학원 교통환경연구소) ;
  • 이태우 (국립환경과학원 교통환경연구소) ;
  • 김정수 (국립환경과학원 교통환경연구소) ;
  • 최광호 (남서울대학교 교양과정부)
  • Received : 2017.04.18
  • Accepted : 2017.06.15
  • Published : 2017.09.30
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Abstract

Currently, the proportion of diesel vehicles in all automobile has grown significantly over the past few years. Air pollutant also grew up and became a social problem. In particular, the issue of NOx emissions caused by NOx high emission in real driving has become a global issue. Despite the fact that the regulatory and reduction project of the new vehicle is actively carried out, there are no existence regulations of In-use diesel vehicle's NOx emission. Therefore, the emission characteristics of the in-use diesel vehicles were investigated to seek ways to reduce NOx emissions in this study. The test targets were used in 237 close inspection of exhaust gases and model year varied from 1996 to 2011. However, the classification of emissions by emission standards differed considerably from NOx emissions. This means that the selection method for early retirement targets should be converted from model year to amount of emissions. If the current early retirement program was applied to the existing system, pre-Euro 3 was 22.530 g/km and Euro 4 was 21.810 g/km to NOx reduction. However, when the vehicle was changed to high emission target vehicle, NOx reduction increase maximum 84.705 kg/yr. According to the study results, an effective reduction in NOx emissions can be achieved if an earlier target in expanded to Euro 4 vehicles.

Keywords

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