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

Green Car Congress

Given equivalent deployment of butanols and ethanol, the results suggest emissions of unburned alcohols would decrease, but carbonyl emissions would increase; some of these compounds have poorly understood health effects, they note. Ethanol produced the highest unburned alcohol emissions of 1.38 mg/mile n-butanol, and 0.30

Gasoline 236
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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

Named flex-fuel vehicles (FFVs), these automobiles run on gasoline, ethanol, or any blend of the two. When the car is filled at the pump, an internal system analyses the mix of the two fuel types and adjusts accordingly. d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1)