Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Applicability of Fuel Supply System for HCNG Engine

HCNG 엔진용 연료시스템의 적용성 평가

  • Lee, Sungwon (Department of Engine Research, Korea Institute of Machinery and Materials) ;
  • Lim, Gihun (Department of Environment & Energy Mechanical Engineering, University of Science and Technology) ;
  • Park, Cheolwoong (Department of Engine Research, Korea Institute of Machinery and Materials) ;
  • Choi, Young (Department of Engine Research, Korea Institute of Machinery and Materials) ;
  • Kim, Changgi (Department of Engine Research, Korea Institute of Machinery and Materials) ;
  • Lee, Janghee (Department of Engine Research, Korea Institute of Machinery and Materials)
  • 이성원 (한국기계연구원 그린동력연구실) ;
  • 임기훈 (과학기술연합대학원대학교 환경에너지기계공학과) ;
  • 박철웅 (한국기계연구원 그린동력연구실) ;
  • 최영 (한국기계연구원 그린동력연구실) ;
  • 김창기 (한국기계연구원 그린동력연구실) ;
  • 이장희 (한국기계연구원 그린동력연구실)
  • Received : 2012.06.18
  • Accepted : 2012.08.20
  • Published : 2013.03.01
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Abstract

CNG buses has contributed to improve air quality in cities. But it is difficult to meet the next emission regulations such as EURO-VI without the help of additional post-processing device. Hydorgen has higher flame speed and lower combustion temperature that make it thermal efficiency increase with leaner operation. Using hydrogen natural gas blend (HCNG) fuel is promising technology which can reduce $NO_x$ and $CO_2$ emissions for a natural gas vehicle. However, fuel flow rate of HCNG should be increased since hydrogen's energy density per volume is much smaller than natural gas. In the present study, the characteristics of fuel supply system and its applicability were evaluated in a heavy duty natural gas engine. The results showed that the potential of fuel pressure regulator and fuel metering valve had enough capacity with HCNG. Employed mixer did not affect the distribution characteristics of mixture.

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References

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