Combustion characteristics of diesel engine with bio-ethanol blend fuel

바이오 에탄올 혼합유에 대한 디젤기관의 연소특성

  • Jung, Suk-Ho (Department of research and development, DAIHATSU DIESEL MFG. CO. LTD)
  • 정석호 (다이하츠 디젤 주식회사 연구부)
  • Published : 2009.05.31


There are increased in using the bio-ethanol, as the carbon neutral attracts many researchers due to a reduction in carbon dioxide spotted as the global warming gas. A gasoline engine with 100% of the bioethanol was developed and used in Brazil already, but researches of using the bio-ethanol in diesel engines are lack. In this study, combustion tests with blend fuel of the gas oil and bio ethanol by 50% maximally due to a low cetane number of bio-ethanol were accomplished as a basic study of introduction of using the bioethanol in diesel engines. The result was that smoke emission was decreased with increase in proportion of the bio-ethanol, due to the increase of a amount of pre-mixed combustion with ignition delay. Although the amount of $CO_2$ is reduced according as the bio-ethanol is used(carbon neutral), the emission of $CO_2$ with increase in the proportion of the bio-ethanol was more increased due to lower a heat value of bio-ethanol than gas oil.


Bio-Ethanol;Ignition delay;Smoke reduction;Amount of premixed combustion


  1. Ahmed, I., 2001, Oxygenated diesel: Emission and performance characteristics of ethanol-eiesel blends in CI engine. SAE 2001-01-2475. pp. 6
  2. Hansen, A.C., Q. Zhang and P.W.L. Lyne, 2005. Ethanoldiesel fuel blends-a review. Bioresource Technology. Vol. 96, 277-285
  3. Kwanchareon, P., A. Luengnaruemitchai and S. Jai-In, 2007. Solubility of a diesel-biodiesel-ethanol blend, its fuel properties, and its emission characteristics from diesel engine. Fuel, Vol. 86, 1053-1061
  4. Miwa, K., T. Wakabayashi, T. Ohsawa and M. Ikegami, 1988. Combustion and performance of a diesel engine with ethanol-gas oil blends. International Symposium on Alcohol Fuels, Vol. 8. 595-600
  5. Mohammadi, A., T. Ishiyama, S.S. Kee, N. Horibe and T. Kakuta, 2005. Improvement in exhaust emissions from a diesel engine utilizing ethanol blended fuel. JSME Series B, Vol. 71, No. 706, 1715-1722
  6. OSEI, S., 2008. The spearhead of bio ethanol-revised edition. Kogyo Chosakai Publishing Inc. of Japan. pp. 4-37
  7. Yamada, T., J. Kawashima, N. Miyamoto and T. Murayama, 2005. A Study on diesel engines with alcohol fuels(Solubility and combustion characteristic with ethanol-Heavy oil fuel blends). JSME Series B, Vol. 49, No. 441, 1087-1094
  8. Hahn-Hagerdal, B., M. Galbe, M.F. Gorwa-Grauslund, G. Liden and G. Zacchi, 2006. Review : Bioethanol-the fuel of tomorrow from the resicues of today. TRENDS in Biotechnology, 24(12), 549-556