Ethanol/gasoline blends as automotive fuel
Vehicle tests were conducted to determine the influence of ethanol in a 10% ethanol/90% gasoline fuel mixture on fuel economy, regulated and unregulated exhaust emissions, exhaust hydrocarbon distribution, and road octane quality. Volumetric fuel economy was shown to be slightly decreased while energy economy was slightly increased using the ethanol/gasoline blend compared to gasoline. When compared to the base gasoline, the use of the ethanol/gasoline blend caused no deleterious effects upon regulated emissions at ambient temperatures from 20 to 75/sup 0/F; at 100/sup 0/F ambient there were minor increases in emissions using the ethanol/gasoline blend. The ethanol/gasoline blend generally had either no effect on or reduced all unburned hydrocarbon components except at the 100/sup 0/F test condition compared to gasoline. Road octane quality was shown to be increased by the use of the ethanol-gasoline blend compared to gasoline.
- Research Organization:
- Department of Energy, Bartlesville, OK (USA). Bartlesville Energy Technology Center
- OSTI ID:
- 6320526
- Report Number(s):
- BETC/RI-79/2
- Country of Publication:
- United States
- Language:
- English
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