한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제16권6호
  • /
  • Pages.192-199
  • /
  • 2008
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

SCR 시스템의 믹서 구조 특성에 따른 유동 혼합 특성에 관한 연구

The Study on the Effects of Mixer Configurations on Fluid Mixing Characteristics in SCR Systems

  • 서진원 (아주대학교 기계공학과 대학원) ;
  • 이규익 (아주대학교 기계공학과 대학원) ;
  • 오정택 (아주대학교 기계공학과 대학원) ;
  • 최윤호 (아주대학교 기계공학과 대학원) ;
  • 이종화 (아주대학교 기계공학부) ;
  • 박진일 (아주대학교 기계공학부)
  • Seo, Jin-Won (Department of Mechanical Engineering, Graduate School, Ajou University) ;
  • Lee, Kyu-Ik (Department of Mechanical Engineering, Graduate School, Ajou University) ;
  • Oh, Jeong-Taek (Department of Mechanical Engineering, Graduate School, Ajou University) ;
  • Choi, Yun-Ho (Department of Mechanical Engineering, Graduate School, Ajou University) ;
  • Lee, Jong-Hwa (Department of Mechanical Engineering, Ajou University) ;
  • Park, Jin-Il (Department of Mechanical Engineering, Ajou University)
  • 발행 : 2008.11.01
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초록

The key issues for the reduction technologies of the exhaust gas from diesel engine being developed are to reduce particulate matters and NOx. The SCR system is known to be one of the most efficient and stable technologies to remove NOx through the mixing of NOx and urea solution. In the present research, the effects of mixer configurations of SCR system have been investigated to enhance the SCR performance. First, a Schlieren technique is employed to visualize the mixing characteristics of urea solution and exhaust gas. The results show that a mixer is essential to obtain proper fluid mixing. In addition, numerical studies have been made to understand the mixing characteristics through the comparison of the mal-distribution index of concentration at the several locations of the diffuser. In particular, the effects of number of blade and mixer angles on mixing characteristics were studied. The results show that the blade angle has a larger effect on the mixing characteristics than the number of blades.

키워드

참고문헌

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