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자료유형
학술저널
저자정보
배명환 (경상대학교)
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제22권 제4호
발행연도
2014.5
수록면
111 - 120 (10page)

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이 논문의 연구 히스토리 (11)

초록· 키워드

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The aim of this study is to develop an integrated urea-SCR catalytic filter system for reducing soot and NOX emissions simultaneously in diesel engines. In this study, the characteristics of exhaust emissions relative to reactive activation temperature under four kinds of engine loads are experimentally investigated by using a four-cycle, fourcylinder, direct injection type, water-cooled turbo intercooler ECU common-rail diesel engine with the integrated urea-SCR MnO₂-V₂O<SUB>5-</SUB>WO₃/TiO₂/SiC catalytic filter system operating at three kinds of engine speeds. The urea-SCR reactor is used to reduce NOX emissions, and the catalytic filter system is used to reduce soot emissions. The reactive activation temperature is very important for reacting a reducing agent with exhaust emissions. The reactive activation temperatures in this experiment is applied to 523, 573 and 623 K. The fuel is sprayed by the pilot and main injections at the variable injection timing between BTDC 15° and ATDC 1° according to experimental conditions. It is found that the NOX conversion rate is the highest as 83.9% at the reactive activation temperature of 523 K in all experimental conditions of engine speed and load, and the soot emissions shown by the average reduction rate of approximately 93.3% are almost decreased below 0.6% in all experimental conditions regardless of reactive activation temperatures. Also, the THC and CO emissions by oxidation reaction of Mn, V and Ti are shown in the average reduction rates of 70.3% and 38% regardless of all experimental conditions.

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Abstract
1. 서론
2. 실험장치 및 방법
3. 실험결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2015-550-001454524