한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제24권3호
  • /
  • Pages.358-364
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  • 2016
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
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SI엔진에서 바이오에탄올-가솔린 혼합율 및 공연비 변화에 따른 연소 및 배기배출물 특성에 관한 연구

A Study on the Combustion and Exhaust Emission Characteristics with the Variations of Mixing and Air-fuel Ratio of Bio-ethanol - Gasoline in a SI Engine

  • 윤승현 (영남이공대학교 자동차계열) ;
  • 하성용 (신한대학교 자동차공학과)
  • Yoon, Seunghyun (Division of Automobiles, Yeungnam University College) ;
  • Ha, Sungyong (Department of Automotive Engineering, Shinhan University)
  • 투고 : 2015.11.27
  • 심사 : 2016.02.01
  • 발행 : 2016.05.01
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초록

The combustion and exhaust emission characteristics in a spark ignition (SI) engine with various test fuels (bioethanol - gasoline blends) and air-fuel ratio were investigated in this research. To investigate the influence of the excess air ratio and ethanol blends on the combustion characteristics such as the cylinder pressure, rate of heat release (ROHR), and fuel consumption rate were analyzed. In addition, the reduction effects of exhaust emissions such as carbon monoxide (CO), unburned hydrocarbon (HC), and oxides of nitrogen (NOx) were compared with those of neat gasoline fuel under the various excess-air ratios. The results showed that the peak combustion pressures and the ROHR of bioethanol fuel cases were slightly higher than those of gasoline fuel at all test ranges and fuel ratio. As compared with gasoline fuel (G100) at each given excess air ratio, BSFC of bio-ethanol was increased. The CO, HC, NOx emissions of bio-ethanol blends were lower than those of gasoline fuel under overall experimental conditions.

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참고문헌

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