Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Feasibility Study of Using Wood Pyrolysis Oil in a Dual-injection Diesel Engine

이중분사기가 장착된 디젤 엔진에서 목질계 열분해유의 적용 가능성에 관한 연구

  • 이석환 (한국기계연구원 그린동력연구실) ;
  • 장영운 (한국기계연구원 그린동력연구실) ;
  • 김호승 (가천대학교 기계공학과) ;
  • 김태영 (한국기계연구원 그린동력연구실) ;
  • 강건용 (한국기계연구원 그린동력연구실) ;
  • 임종한 (가천대학교 기계공학과)
  • Received : 2013.02.14
  • Accepted : 2013.06.24
  • Published : 2014.05.01
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Abstract

The vast stores of biomass available in the worldwide have the potential to displace significant amounts of petroleum fuels. Fast pyrolysis of biomass is one of several paths by which we can convert biomass to higher value products. The wood pyrolysis oil (WPO) has been regarded as an alternative fuel for petroleum fuels to be used in diesel engine. However, the use of WPO in a diesel engine requires modifications due to low energy density, high water contents, high acidity, high viscosity, and low cetane number of the WPO. One possible method by which the shortcomings may be circumvented is to co-fire WPO with other petroleum fuels. WPO has poor miscibility with light petroleum fuel oils; the most suitable candidates fuels for direct fuel mixing are methanol or ethanol. Early mixing with methanol or ethanol has the added benefit of significantly improving the storage and handling properties of the WPO. For separate injection co-firing, a WPO-ethanol blended fuel can be fired through diesel pilot injection in a dual-injection dieel engine. In this study, the performance and emission characteristics of a dual-injection diesel engine fuelled with diesel (pilot injection) and WPO-ethanol blend (main injection) were experimentally investigated. Results showed that although stable engine operation was possible with separate injection co-firing, the fuel conversion efficiency was slightly decreased due to high water contents of WPO compare to diesel combustion.

Keywords

References

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