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자료유형
학술대회자료
저자정보
황인구 (고려대학교) 명차리 (고려대학교) 박심수 (고려대학교) 이강수 (현대자동차) 박재인 (현대자동차)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2009년 학술대회 및 전시회
발행연도
2009.11
수록면
675 - 678 (4page)

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In recent years, green house gas (GHG) was mainly interested topic all over the world and CO₂ emission from the automotive field is an important issue. Diesel engine has a good point in point of fuel economy or CO₂ emission than gasoline engine, but it has a problem reducing NOx emission. As the Urea-SCR (Selective Catalytic Reduction) system is most useful technology to reduce NOx emission from diesel engine, many vehicle maker was produced the heavy duty diesel engine for EURO 4 with Urea-SCR system. However, light duty diesel engine was achieved emission regulation with EGR (Exhaust Gas Recirculation), many vehicle manufactures considered Urea-SCR system in light diesel engine to meet EURO 5 or futhermore. In this paper, 3D computational analysis was performed in light duty diesel engine exhaust system with SCR catalyst and uniformity index at the SCR catalyst was calculated. And spray pattern and SMD (Sauter Mean Diameter) of the urea droplet were analyzed with PMAS (Particle Motion Analysis System). The spray model in the commercial code was modified with measured SMD and evaporation characteristic was analyzed. And ammonia uniformity index was calculated at the SCR catalyst. Moreover static mixer was designed to enhance urea droplet evaporation. Finally engine experiment was performed with urea dosing unit and the NOx conversion efficiency was measured. And the results from the analysis was validated with experimental results.

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Abstract
1. 서론
2. 해석 모델 및 해석 조건
3. 시험장치
3. 해석 및 시험 결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2010-556-002777506