Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Combustion and Emission Characteristics of Biodiesel Blended Fuel by EGR Rate in a 4-cylinder CRDI Diesel Engine

4실린더 커먼레일 디젤엔진에서 바이오디젤 혼합연료와 EGR율에 따른 연소 및 배기특성

  • Jeong, Kyu-Soo (Graduate School of Mechanical Engineering, Hanyang University) ;
  • Lee, Dong-Gon (Graduate School of Mechanical Engineering, Hanyang University) ;
  • Youn, In-Mo (Graduate School of Mechanical Engineering, Hanyang University) ;
  • Roh, Hyun-Gu (Department of Mechanical & Automotive Engineering, Induk University) ;
  • Park, Sung-Wook (Department of Mechanical Engineering, Hanyang University) ;
  • Lee, Chang-Sik (Department of Mechanical Engineering, Hanyang University)
  • 정규수 (한양대학교 대학원 기계공학과) ;
  • 이동곤 (한양대학교 대학원 기계공학과) ;
  • 연인모 (한양대학교 대학원 기계공학과) ;
  • 노현구 (인덕대학 기계자동차과) ;
  • 박성욱 (한양대학교 기계공학부) ;
  • 이창식 (한양대학교 기계공학부)
  • Received : 2010.12.29
  • Accepted : 2011.03.08
  • Published : 2011.07.01
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Abstract

This study describes the effect of EGR rate on the combustion and emissions characteristics of a four cylinder CRDI diesel engine using biodiesel (soybean oil) blended diesel fuel. The test fuel is composed of 30% biodiesel and 70% ULSD (ultra low sulfur diesel) by volumetric ratio. The experiment of engine emissions and performance characteristics were performed under the various EGR rates. The experimental results showed that ignition delay was extended, the maximum combustion pressure and heat release gradually were decreased with increasing EGR rate. Comparing biodiesel blended fuel to ULSD, the injection quantity of biodiesel blended fuel was further increased than ULSD. The emission results showed that $NO_x$ emission of biodiesel blended fuel becomes higher according to the increase of EGR rate. However, in the case of biodiesel blended fuel, HC, CO and soot emissions were decreased compared to ULSD.

Keywords

References

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