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NREL study probes emissions impact of butanol-gasoline blends in light-duty vehicles

Green Car Congress

This fuel’s exhaust emissions contained the lowest total oxygenates among the alcohol blends and the lowest NMOG of all fuels tested. McCormick (2013) “Impact of Higher Alcohols Blended in Gasoline on Light-Duty Vehicle Exhaust Emissions,” Environmental Science & Technology doi: 10.1021/es402793p.

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Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels

Green Car Congress

Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. The vast majority (87%) of gasoline sold in the US in 2013 was regular grade, with 10% premium and 3% midgrade. —Leone et al. Premium-grade gasoline is listed as 91−93 AKI minimum, corresponding to 96−98 RON.

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