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자료유형
학술저널
저자정보
저널정보
대한기계학회 대한기계학회 논문집 B권 대한기계학회논문집 B권 제31권 제8호
발행연도
2007.8
수록면
672 - 679 (8page)

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The combustion characteristics of a liquefied petroleum gas?di-methyl ether (LPG-DME) compression ignition engine was investigated under homogeneous charge and stratified charge conditions. LPG was used as the main fuel and injected into the combustion chamber directly. DME was used as an ignition promoter and injected into the intake port. Different LPG injection timings were tested to verify the combustion characteristics of the LPG-DME compression ignition engine. The combustion was divided into three region which are homogeneous charge, stratified charge, and diffusion flame region according to the injection timing of LPG. The hydrocarbon emission of stratified charge combustion was lower than that of homogeneous charge combustion. However, the carbon monoxide and nitrogen oxide emission of stratified charge combustion were slightly higher than those of the homogeneous charge region. The indicated mean effective pressure was reduced at stratified charge region, while it was almost same level as the homogeneous charge combustion region at diffusion combustion region. The start of combustion timing of the stratified charge combustion and diffusion combustion region were advanced compared to the homogeneous charge combustion. It attributed to the higher cetane number and mixture temperature distribution which locally stratified. However, the knock intensity was varied as the homogeneity of charge was increased.

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Abstract
1. 서론
2. 실험 장치 및 실험 방법
3. 실험 결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2009-550-016854926