Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study of Catalyst Temperature Rise Effect by using UEGI(Unburned Exhaust Gas Ignition) Technology during Cold-Start

냉시동시 미연 배기가스 점화 기술을 이용한 촉매 온도 상승 효과에 관한 연구

  • 김충식 (국민대학교 자동차공학전문대학원) ;
  • 천준영 (국민대학교 자동차공학전문대학원) ;
  • 최진욱 (국민대학교 자동차공학전문대학원) ;
  • 김인탁 (현대자동차) ;
  • 엄인용 (국민대학교 자동차공학전문대학원) ;
  • 조용석 (국민대학교 자동차공학전문대학원)
  • Published : 2000.11.02
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Abstract

Most vehicle's exhaust emissions come from the cold transient period of the FTP-75 test. In this study, UEGI technology was developed to help close-coupled catalytic converter (CCC) reach light-off temperature within a few seconds after cold-start. In the UEGI system, unburned exhaust mixture is ignited by four glow plugs installed upstream of the catalyst. Experimental results showed that the temperature of CCC rises faster with the UEGI technology, and the CCC reaches light-off temperature earlier. Under the conditions tested, the light-off time of the baseline case was 62 seconds and that of the UEGI case was 33 seconds.

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