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Comparison of Effects of MTBE and TAME on Exhaust and Evaporative Emissions — Auto/Oil Air Quality Improvement Research Program
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Abstract
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.
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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.Also In
References
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