This study is the second in a series of three EPA studies to investigate the effect of fuel reformulations and modifications on exhaust emissions. Both the first and second study in this series of studies were used to support the development of EPA's complex model for the certification of reformulated gasolines. Phase I of the study tested eight fuels on forty vehicles. This study, termed Phase II, tested twelve fuels on a separate fleet of 39 light-duty vehicles. The Phase II fuel parameters studied included Reid Vapor Pressure (RVP), the 50% and 90% evaporated distillation temperatures (T50 and T90), sulfur content, aromatics content, olefin content, oxygenate type and oxygen content. Measured exhaust emissions included total hydrocarbons (THC), oxides of nitrogen (NOx), carbon monoxide (CO), carbon dioxide (CO2), benzene, 1,3-butadiene, acetaldehyde and formaldehyde.Oxygen, aromatics and olefins were found to have the greatest influence on determining THC emissions while sulfur and T90 were found to have the greatest influence on NOx emissions. For benzene emissions, the aromatics and benzene content of the fuel were found to be the key parameters. For the other measured exhaust emissions, no single fuel parameter was seen to stand out as being the key parameter in determining emissions performance.


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    Titel :

    Reformulated Gasoline Effects on Exhaust Emissions: Phase II: Continued Investigation of the Effects of Fuel Oxygenate Content, Oxygenate Type, Volatility, Sulfur, Olefins and Distillation Parameters


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Fuels & Lubricants Meeting & Exposition ; 1994



    Erscheinungsdatum :

    01.10.1994




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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    Mayotte, S. C. / Lindhjem, C. E. / Rao, V. et al. | British Library Conference Proceedings | 1994


    Reformulated Gasoline Effects on Exhaust Emissions: Phase I: Initial Investigation of Oxygenate, Volatility, Distillation and Sulfur Effects

    Lindhjem, Christian E. / Sklar, Michael S. / Mayotte, Stephen C. et al. | SAE Technical Papers | 1994


    Effects of gasoline-oxygenate blends on motor vehicle emissions

    Harvey,C.A. / Adler,J. / Environmental Protection Agency,US | Kraftfahrwesen | 1988