• Korean Chemical Engineering Research
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• v.48 no.3
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• pp.375-381
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• 2010

Cetane number of diesel fuel for compression ignition engine is one of main properties for fuel ignition quality. Recently the cetane index has been replaced the cetane number in order to resolve the disadvantage of CFR engine test, but these two value have slightly difference values due to addition of various additives. In this study, we analyzed the cetane number, derived cetane number and cetane index for diesel fuel which was blended with various ratios of biodiesel, kerosene and cetane improver as additives. As a result, Cetane number showed the similar value with derived cetane number, but cetane index showed quite different value with cetane number when biodiesel and cetane improver were used as additives.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1987.06a
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• pp.26-40
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• 1987

경유을 디젤 엔진의 연료로 사용하기 위해서는 세탄가가 맞아야 한다. 경유를 엔진에 주입하면 쉽게 착화되지 않는다. 개솔린은 점화가 너무 잘 되어 탈인데, 경유는 착화가 더디어서 탈이다. 착화 지연을 수치로 표시하는 용어로서 세탄가, 세탄지수, 디젤지수의 세 가지가 있다. 세낱가는 경유의 품질을대표하는 가장 중요한 규격 항목이다. 세낱가의 높고 낮음에 따라 경유의 품질을 쉽게 판정할 수 있다. 세탄가가 낮으면, 연소가 거칠어 지고 검은 연기가 치솟는다. 미국 ASTM은 경유의 세탄가 규격을 40으로 정하고 있다. 우리나라 경유의 세탄가 규격은 45로 정하고 있다. 미국의 경유 세탄가 규격은 40이지만, 미국 대도시의 버스, 트럭에서는 검은 연기가 치솟는 일이 드물다. 우리나라의 경유 세탄가 규격은 미국보다 훨씬 높지마, 우리나라 대도시의 버스, 트럭에서는 검은 연기가 치솟는 일이 많다.

• Journal of the Korean Applied Science and Technology
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• v.35 no.4
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• pp.1134-1144
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• 2018

Cetane Number is one of the quality standard for diesel, which assesses the compatibility of ignition quality of diesel compression in diesel engines. Cetane number must be upper 52 to keep the recent diesel quality standards. It is known that if cetane number is high, there will be shorter ignition delay periods than being lower. On the other hands, if cetane number is too high that exceeds the quality standard, there will increase the air pollution and decrease of the fuel efficiency because incomplete combustion. In South Korea, various methods are being used to measure the cetane number such as cetane number that used CFR engine, cetane index from calculate density and distillation temperature and derived cetane number to make up for CFR engine that ignition delay in high temperature is implemented. In this study will be conducted by collecting the diesel from the major oil companies, and try to analyze the correlation between the different methods of cetane number with various factors. At the results of this study, it was shown that the cetane index is high then cetane engine and derived cetane number. therefore it will be necessary to additional research for out of cetane number quality standards.