지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.11
- 수록면
- 114 - 120 (7page)
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초록· 키워드
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The catalytic converter reduces the emissions of unburned hydrocarbons, carbon monoxide and oxides of nitrogen. Overall catalytic converter efficiency is influenced by how the flow distributes across the substrate inlet face, even if the inlet gases are well mixed. Highly non-uniform substrate inlet flow may provide incomplete HC, CO, and NOx conversion because the converter chemistry only uses a portion of the available catalyst surface area. Engine operating air-fuel ratio is maintained close to stoichiometric through the use of an oxygen sensor which provides a voltage signal dependent on the oxygen concentration in the exhaust gas stream. So, it’s important to find the optimal oxygen sensor location for the AFIM (airfuel ratio imbalance monitor) system which requires the oxygen sensor to see exhaust gases from cylinder evenly. This study recognizes the dual roles of gas mixing and flow uniformity in determining HC, CO and NOx conversion in the substrate. Also, it predicts the AFIM performance for the specified oxygen sensor type and location using 3D CFD analysis. As a result, this approach is used to optimize the manifold runner and converter inlet design through the analysis.
목차
Abstract
1. 서론
2. 해석 방법
3. 해석 방법
4. 해석 결과
5. 결론
References
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UCI(KEPA) : I410-ECN-0101-2013-556-001412286