Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Combustion and Emission Characteristics in a High Compression Ratio Spark Ignition Engine using Off-gas from FT reaction

FT반응 Off-gas를 이용한 고압축비 전기점화 엔진의 연소 및 배기가스 특성에 관한 연구

  • 정탄 (과학기술연합대학원대학교 환경에너지기계공학과) ;
  • 이준순 (과학기술연합대학원대학교 환경에너지기계공학과) ;
  • 이용규 (과학기술연합대학원대학교 환경에너지기계공학과) ;
  • 김창업 (한국기계연구원) ;
  • 오승묵 (한국기계연구원 & 과학기술연합 대학원대학교 환경에너지기계공학과)
  • Received : 2018.05.31
  • Accepted : 2018.06.20
  • Published : 2018.09.30
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Abstract

FT process is a technology of chemical reactions that converts a mixture of carbon monoxide and hydrogen into liquid hydrocarbons. During the FT process unreacted gas, known as Off-gas which has low-calorie, is discharged. In this study, we developed an engine that utilize simulated Off-gas, and studied the characteristics of the engine. The off-gas composition is assumed to be $H_2$ 70%, CO 15%, $CO_2$ 15% respectively. Under stoichiometric air-fuel ratio, the experiment was conducted at WOT and IMEP 0.3 Mpa changing compression ratio. Ignition timing was applied with MBT timing. Maximum indicated thermal efficiency 37% was achieved at compression ratio 15 under WOT. CO, $CO_2$ and $NO_x$ were influenced by changing compression ratio, and CO emission was satisfied with the US Tier 4 standard for nonroad engine over the entire experimental conditions.

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