The current experimental study aims to examine the effects of using oxygenates as a replacement of lead additives in gasoline on performance of a typical SI engine. The tested oxygenates are MTBE, methanol, and ethanol. These oxygenates were blended with a base unleaded fuel in three ratios (10, 15, and 20 vol.%). The engine maximum output and thermal efficiency were evaluated at a variety of engine operating conditions using an engine dynamometer setup. The results of the oxygenated blends were compared to those of the base fuel and of a leaded fuel prepared by adding TEL to the base. When compared to the base and leaded fuels, the oxygenated blends improved the engine brake thermal efficiency. The leaded fuel performed better than the oxygenated blends in terms of the maximum output of the engine except in the case of 20 vol.% methanol and 15 vol.% ethanol blends. Overall, the methanol blends performed better than the other oxygenated blends in terms of engine output and thermal efficiency.
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January 2004
Technical Papers
Experimental Investigation of SI Engine Performance Using Oxygenated Fuel
A. A. Al-Farayedhi,
A. A. Al-Farayedhi
Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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A. M. Al-Dawood,
A. M. Al-Dawood
Mechanical Technology Department, College of Technology at Dammam, Dammam 31472, Saudia Arabia
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P. Gandhidasan
P. Gandhidasan
Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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A. A. Al-Farayedhi
Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
A. M. Al-Dawood
Mechanical Technology Department, College of Technology at Dammam, Dammam 31472, Saudia Arabia
P. Gandhidasan
Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, Nov. 2002; final revision received May 2003. Associate Editor: D. Assanis.
J. Eng. Gas Turbines Power. Jan 2004, 126(1): 178-191 (14 pages)
Published Online: March 2, 2004
Article history
Received:
November 1, 2002
Revised:
May 1, 2003
Online:
March 2, 2004
Citation
Al-Farayedhi, A. A., Al-Dawood, A. M., and Gandhidasan, P. (March 2, 2004). "Experimental Investigation of SI Engine Performance Using Oxygenated Fuel ." ASME. J. Eng. Gas Turbines Power. January 2004; 126(1): 178–191. https://doi.org/10.1115/1.1615254
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