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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Investigation of the Combustion and Emission Characteristics of 1-Octanol/Diesel Fuel Blends in a Direct Injection Diesel Engine

직분사 디젤 엔진에서 1-옥탄올/경유 혼합 연료의 연소 및 배기 특성 연구

  • CHEOL-OH PARK (Department of Mechanical and System Engineering, Gyeongsang National University) ;
  • JEONGHYEON YANG (Department of Mechanical and System Engineering, Gyeongsang National University) ;
  • BEOMSOO KIM (Department of Mechanical and System Engineering, Gyeongsang National University) ;
  • JAESUNG KWON (Department of Mechanical and System Engineering, Gyeongsang National University)
  • 박철오 (경상국립대학교 기계시스템공학과) ;
  • 양정현 (경상국립대학교 기계시스템공학과) ;
  • 김범수 (경상국립대학교 기계시스템공학과) ;
  • 권재성 (경상국립대학교 기계시스템공학과)
  • Received : 2023.01.27
  • Accepted : 2023.02.17
  • Published : 2023.02.28
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Abstract

An experimental study was conducted on a 4-stroke direct injection diesel engine to examine the combustion and emission characteristics of 1-octanol/diesel fuel blends. The concentration of 1-octanol in the fuel blends was 10%, 30%, and 50% by volume. Experiments were conducted by varying the engine torque from 6 Nm to 12 Nm at the same engine speed of 2,700 rpm. Results showed that the fuel conversion efficiency increased as the 1-octanol proportion increased under most experimental conditions. However, the brake specific fuel consumption increased due to the relatively low lower heating value of 1-octanol. The smoke opacity and the concentrations of NOx and CO emissions generally decreased with brake mean effective pressure as the 1-octanol proportion increased. On the other hand, the unburned hydrocarbon concentration increased with an ascending ratio of 1-octanol.

Keywords

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