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논문 기본 정보

자료유형
학술대회자료
저자정보
정수진 (자동차부품연구원) 오세두 (자동차부품연구원) 박정권 (자동차부품연구원)
저널정보
한국자동차공학회 한국자동차공학회 춘계학술대회 2012 한국자동차공학회 부문종합 학술대회
발행연도
2012.5
수록면
23 - 28 (6page)

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초록· 키워드

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Dimethyl-ether(DME) is one of the most promising alternative fuels for IC engines. In this study, the compression ignition combustion fueled with dimethyl-ether was investigated. Three-point split injection strategy was applied and evaluated its availability and performance in terms of emission(CO, HC, NOx, PM), fuel economy and power. Experiments were carried out in 4-cylinder 2.9 liter direct-injection diesel engine equipped with common-rail injection system, and the engine performance and emission characteristics were tested the various pre and pilot injection timings and quantities. Experiments were performed under the engine condition ranging from 1200rpm, 2bar to 3000rpm,4 bar. From the results of this study, three-point split injection strategy showed the possibility to overcome the disadvantages of DME engine such as high NOx and HC emissions due to long injection duration for attaining diesel equilibrium performance. By optimizing pre and pilot injection timing and quantities NOx emission could be reduced by maximum 68.5% for low speed and load conditions. Additional NOx reduction of could be obtain by retarding main injection timing. Torque could be improved by reducing injection dwell timing between pilot and main injection. In the range of medium and high load and speed conditions, main injection timing was retarded for reducing NOx emission with sacrificing torque. However, this torque reduction could be compensated by reducing pilot injection quantity and increasing the quantity of main injection.

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Abstract
1. 서론
2. 실험방법
3. 실험결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2014-556-001323037