Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Characteristics of Exhaust Gas Temperature Uniformity and Light-off in Motorcycle Catalytic Converter

2륜 자동차 촉매변환기내 배기가스 온도균일도 특성과 Light-Off에 관한 연구

  • 이중섭 (삼원기술㈜ 기술연구소) ;
  • 정효민 (경상대학교 기계항공공학부, 해양산업연구소) ;
  • 이철재 (동명대학교 자동차공학과) ;
  • 정한식 (경상대학교 기계항공공학부)
  • Published : 2007.06.01
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Abstract

This study represents the temperature uniformity in catalytic converter. Present research model type is a monolithic catalytic converter. This type was been widely used for complying the regulations of pollutant emissions from automobiles. The mean experimental parameters are engine speed and ceramics monolith in the catalytic converter. The experimental test engine model used was the 124.1cc motorcycle engine. The experimental study using thermal imaging method shows the megaphone type model has larger effective area than the basic model. The rate of effective area in the basic model is about 8.9 % and the megaphone type model are 41.52 %, 34.60 %, 33.43 %, 25.43 %, 17.82 % according to the diffuser angle $4^{\circ}\;to\;8^{\circ}$. In conclusion, the megaphone type monolithic converter has higher efficiency of reducing the pollution with less noise compared to the basic shape. We believe this will be very important as a design guide of the advanced motorcycle.

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References

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