Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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CFD Analysis on Gas Injection System of Solid SCR for NOx Reduction of Exhaust Emissions in Diesel Engine

디젤엔진 배출가스의 질소산화물 저감을 위한 Solid SCR용 가스분사 시스템의 전산유체해석 연구

  • Lee, Hoyeol (Department of Mechanical Engineering, Graduate School, Hannam University) ;
  • Yoon, Cheon Seog (Department of Mechanical Engineering, Hannam University) ;
  • Kim, Hongsuk (Engine Research Center, Korea Institute of Machinery and Materials)
  • 이호열 (한남대학교 대학원 기계공학과) ;
  • 윤천석 (한남대학교 기계공학과) ;
  • 김홍석 (한국기계연구원 그린동력연구실)
  • Received : 2013.11.26
  • Accepted : 2014.02.12
  • Published : 2014.07.01
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Abstract

CFD(computational fluid dynamics) model is developed to simulate direct injection of ammonia gas phase from ammonia transporting materials into the SCR catalyst in the exhaust pipe of the engine with solid SCR. Configurations of one-hole and four-hole nozzle, circumferential type, porous tube type, and the effect of mixer configurations which commonly used in liquid injection of AdBlue are considered for complex geometries. Mal-distribution index related to concentration of ammonia gas, flow uniformity index related to velocity distribution, and pressure drop related to flow resistance are compared for different configurations of complex geometries at the front section of SCR catalyst. These results are used to design the injection system of ammonia gas phase for solid SCR of target vehicle.

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References

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