Comparison of Effects of MTBE and TAME on Exhaust and Evaporative Emissions — Auto/Oil Air Quality Improvement Research Program 932730
Effects of methyl tertiary-butyl ether (MTBE) and tertiary-amyl methyl ether (TAME) on emissions were compared in a fleet of ten 1989 model year vehicles. Test fuels containing 11.5 vol.% MTBE or 12.7 vol.% TAME were blended in a base fuel representing federal emission certification fuel. The oxygen content of both fuels was about 2.0 wt.%. No significant differences were found between the two fuels in exhaust mass HC, NMHC, CO, or NOx; in exhaust or evaporative toxic air pollutants, benzene, 1,3-butadiene, acetaldehyde, or total toxic emissions; or in evaporative hot soak emissions. The only differences found to be significant at the 95% level were in mass and estimated reactivity-weighted diurnal evaporative emissions, for both of which the TAME fuel was about 24% lower than the MTBE fuel; and in formaldehyde emissions, which were 28% higher with the TAME fuel.
Citation: Koehl, W., Benson, J., Burns, V., Gorse, R. et al., "Comparison of Effects of MTBE and TAME on Exhaust and Evaporative Emissions — Auto/Oil Air Quality Improvement Research Program," SAE Technical Paper 932730, 1993, https://doi.org/10.4271/932730. Download Citation
William J. Koehl, Jack D. Benson, Vaughn R. Burns, Robert A. Gorse, Albert M. Hochhauser, Jay C. Knepper, William R. Leppard, Louis J. Painter, Larry A. Rapp, Robert M. Reuter, James A. Rutherford
International Fuels & Lubricants Meeting & Exposition
Auto/Oil Air Quality Improvement Research Program, Volume Ii-SP-1000, SAE 1993 Transactions: Journal of Fuels & Lubricants-V102-4