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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제10권 제3호
발행연도
2002.5
수록면
93 - 100 (8page)

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초록· 키워드

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For natural gas and LPG fuel, measurements on the concentrations of individual exhaust hydrocarbon species have been made as a function of air-fuel ratio in a 2-liter four-cylinder engine using a gas chromatography. NMHC in addition to the species of HC, other emissions such as CO₂, CO and NOx were examined for natural gas and LPG at 1800rpm for two compression ratios (8.6 and 10.6). Fuel conversion cfficiencies were also investigated together with emissions to study the effect of engine parameters on the combustion performances in gas engines especially under the lean burn conditions. It was found that CO₂ emission decreased with smaller C value of fuel, leaner mixture strength and the higher compression ratio. HC emissions from LPG engine consis­ted primarily of propane (larger 60%), ethylene and propylene, while main emissions from natural gas were meth­ane (larger than 60%), ethane, ethylene and propane on the average. The natural gas was proved to give the less ozone formation than LPG fuel. This was accomplished by reducing the emissions of propylene, which has rela­tively high MIR factor, and propane that originally has large portion of LPG. In addition, natural gas shows a ben­efit in other emissions (i.e. NMHC, NOx, CO₂ and CO), SR and BSR values except fuel conversion efficiency.

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ABSTRACT

1.서론

2.실험장치 및 방법

3.결과 및 고찰

4.결론

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