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U.S. Department of Energy
Office of Scientific and Technical Information

Vapor pressures of mixtures of gasolines and gasoline-alcohol blends

Conference ·
OSTI ID:6875740
An investigation was conducted to determine the change in Reid vapor pressure (RVP) which results when gasoline and various gasoline-alcohol blends are mixed. Such mixing occurs in vehicle fuel tanks when a motorist buys gasolines and blends alternately. When mixing a gasoline with a gasoline-alcohol blend of the same RVP, the resulting mixture always had a higher RVP. The results of this study suggest that the presence of both gasolines and blends in the marketplace can lead to higher in-use evaporative emissions from vehicles, even if the blends meet the same volatility standards as gasoline.
Research Organization:
Fuels and Lubricants Dept., General Motors Research Labs., Warren, MI
OSTI ID:
6875740
Report Number(s):
CONF-861041-
Country of Publication:
United States
Language:
English