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승용차용 세라믹 촉매 담체의 열적 내구성의 실험적 평가

Experimental Estimation of Thermal Durability in Ceramic Catalyst Supports for Passenger Car

  • 백석흠 (동아대학교 대학원 기계공학과) ;
  • 김성용 (강원대학교 산업대학원 자동차공학과) ;
  • 승삼선 (강원대학교 자동차공학과) ;
  • 양협 (강원대학교 자동차공학과) ;
  • 주원식 (동아대학교 기계공학과) ;
  • 조석수 (강원대학교 자동차공학과)
  • 발행 : 2007.12.01

초록

Ceramic honeycomb structures have performed successfully as catalyst supports for meeting hydrocarbon, carbon monoxide and nitrous emissions standards for gasoline-powered vehicles. Three-way catalyst converter has to withstand high temperature and thermal stress due to pressure fluctuations and vibrations. Thermal stress constitutes a major portion of the total stress which the ceramic catalyst support experiences in service. In this study, temperature distribution was measured at ceramic catalyst supports. Thermal durability was evaluated by power series dynamic fatigue damage model. Radial temperature gradient was higher than axial temperature gradient. Thermal stresses depended on direction of elastic modulus. Axial stresses are higher than tangential stresses. Tangential and axial stresses remained below thermal fatigue threshold in all engine operation ranges.

키워드

참고문헌

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피인용 문헌

  1. Probabilistic Estimation of Thermal Fatigue Performance of Three-Way Catalyst Substrate vol.38, pp.6, 2014, https://doi.org/10.3795/KSME-A.2014.38.6.669
  2. Optimization Techniques for the Inverse Analysis of Service Boundary Conditions in a Porous Catalyst Substrate with Fluid-Structure Interaction Problems vol.35, pp.10, 2011, https://doi.org/10.3795/KSME-A.2011.35.10.1161