Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Factors Influencing the Composition and Quantity of Passenger Car Refueling Emissions. Part 2.
Author Braddock, J. N. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1987
Report Number EPA/600/D-87/234;
Stock Number PB87-212775
Additional Subjects Motor vehicles ; Air pollution ; Experimental design ; Hydrocarbons ; Toluene ; Refueling ; Emission factors ; Benzene
Library Call Number Additional Info Location Last
NTIS  PB87-212775 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 37p
The study measured and characterized refueling emissions from a 1986 Pontiac Grand Am using 3 test fuels, including a winter, summer and intermediate blend gasoline under a variety of seasonal temperature conditions. It investigated three major parameters that affect refueling emissions: fuel volatility, expressed as Reid Vapor Pressure (RVP); dispensed fuel temperature (Td); and tank fuel temperature (Tt). In the study, RVP varied from 10.0 to 13.3 psi, Td varied from 50 to 88 F, and Tt varied from 40 to 108 F, while the overall hydrocarbon (HC) refueling emission rate ranged from 2.90 to 7.41 grams/gallon. Detailed hydrocarbon analyses were completed for both the test fuels (dispensed fuel and tank fuel) and the refueling vapor. The overall mean (from all test fuels and temperature scenarios) HC emission rate was 4.69 g/gal; the mean refueling vapor was comprised of 79.7% paraffins, 13.6% olefins, 5.8% aromatics, with an average carbon number of 4.76; overall mean test gasoline was comprised of 39.5% paraffins, 7.7% olefins 49.0% aromatics, with an average carbon number of 7.30. Butanes and pentanes comprised about 70% of the total HC refueling vapor.