Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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An Experimental Study on Combustion and Emission Characteristics of a CI Diesel Engine Fueled with Pentanol/Diesel Blends

압축착화 디젤엔진에서 펜탄올/경유 혼합유의 연소 및 배기 특성에 관한 실험적 연구

  • JAESUNG KWON (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • BEOMSOO KIM (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • JEONGHYEON YANG (Department of Mechanical System Engineering, Gyeongsang National University)
  • 권재성 (경상국립대학교 기계시스템공학과) ;
  • 김범수 (경상국립대학교 기계시스템공학과) ;
  • 양정현 (경상국립대학교 기계시스템공학과)
  • Received : 2024.01.31
  • Accepted : 2024.02.19
  • Published : 2024.02.28
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Abstract

In this study, combustion experiments were conducted to assess engine performance and exhaust gas characteristics using four blends of 1-pentanol and diesel as fuel in a naturally aspirated 4-stroke diesel engine. The blending ratios of 1-pentanol were 5, 10, 15, and 20% by volume. The experiments were carried out under four different engine torque conditions (6, 8, 10, and 12 Nm) while maintaining a constant engine speed of 2,000 rpm for all fuel types. The results showed that the use of 1-pentanol/diesel blended fuel generally led to a decrease in brake thermal efficiency, attributed to the low calorific value of the blend and the cooling effect due to the latent heat of vaporization. Additionally, both brake specific energy consumption and brake specific fuel consumption increased. However, the use of the blended fuel resulted in a general decrease in NOx concentration, a decrease in CO concentration except some conditions, and a reduction in smoke opacity across all conditions.

Keywords

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