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E85 is an abbreviation typically referring to an ethanol fuel blend of 85% ethanol fuel and 15% gasoline or other hydrocarbon by volume. In the United States , the exact ratio of fuel ethanol to hydrocarbon may vary according to ASTM 5798 that specifies the allowable ethanol content in E85 as ranging from 51% to 83%. [ 1 ]
The energy content of ethanol is 76,100 BTU/US gal (5.89 kilowatt-hours per litre), compared to 114,100 BTU/US gal (8.83 kWh/L) for gasoline. (see chart above) A flex-fuel vehicle will experience about 76% of the fuel mileage MPG when using E85 (85% ethanol) products as compared to 100% gasoline. Simple calculations of the BTU values of the ...
Summary of the main ethanol blends used around the world in 2013. Several common ethanol fuel mixtures are in use around the world. The use of pure hydrous or anhydrous ethanol in internal combustion engines (ICEs) is only possible if the engines are designed or modified for that purpose, and used only in automobiles, light-duty trucks and motorcycles.
Sweden has a similar seasonal reduction, but the ethanol content in the blend is reduced to E75 during the winter months. [44] [45] Brazilian flex fuel vehicles can operate with ethanol mixtures up to E100, which is hydrous ethanol (with up to 4% water), which causes vapor pressure to drop faster as compared to E85 vehicles. As a result ...
Ethanol is not the only product created during production. By-products also have energy content. Corn is typically 66% starch and the remaining 33% is not fermented. This unfermented component is called distillers grain, which is high in fats and proteins, and makes a good animal feed supplement. [7]
As of 2008, there were an estimated 7 million Flex-Fuel capable vehicles on the road in the United States. A recent GM study found that roughly 70 percent of its flex-fuel vehicle owners did not know they could use E85, and fewer than 10 percent did so. [18] Since 2012, the IndyCar Series has utilized E85. [19]
Estonia: 95 RON and 98 RON are widely available. E85 (bioethanol) gasoline found in very few gas stations. Finland: 95 and 98 (RON), advertised as such, at almost all gas stations. Most cars run on 95, but 98 is available for vehicles that need higher octane fuel, or older models containing parts easily damaged by high ethanol content.
By early 2013, about 11 million E85 flex-fuel cars and light trucks were in operation, [10] [11] though actual use of E85 fuel was limited, because the ethanol fueling infrastructure was limited. [46] As of 2005, 68% of American flex-fuel car owners were not aware they owned an E85 flex. [12] [13] Flex and non-flex vehicles looked the same ...