In the present work, the effect of adding ethanol or methyl tertiary butyl ether (MTBE) to gasoline on the regulated and unregulated emissions from an internal combustion engine with a typical three-way catalyst was studied. The addition of ethanol to fuel (10% w/w) increased both the research octane number and the Reid vapor pressure of the fuel, whereas adding 11% w/w MTBE caused an increase only in the research octane number of the fuel. When the fuel contained MTBE, less hydrocarbons, carbon monoxide, and acetaldehyde were emitted in the tailpipe. The increased emissions of acetaldehyde and ethanol were the main disadvantages of using ethanol.
The Effect of Adding Oxygenated Compounds to Gasoline on Automotive Exhaust Emissions
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, July 13, 2000; final revision received by the ASME Headquarters, Dec. 5, 2001. Editor: D. N. Assanis.
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Poulopoulos , S. G., and Philippopoulos, C. J. (December 27, 2002). "The Effect of Adding Oxygenated Compounds to Gasoline on Automotive Exhaust Emissions ." ASME. J. Eng. Gas Turbines Power. January 2003; 125(1): 344–350. https://doi.org/10.1115/1.1501076
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