The effect of gasoline olefin composition and content on urban ozone was estimated using the Urban Airshed Model (UAM), emission measurements for a base fuel, and projected emissions for two hypothetical fuels with reduced olefin content. The projected emissions for the hypothetical fuels were developed using regressions developed from Auto/Oil Air Quality Improvement Research Program (AQIRP) Phase I testing, a vapor headspace model and other information. Ozone modeling was conducted for Los Angeles in year 2010 and Dallas-Fort Worth and New York in year 2005. When all olefins were removed from the base fuel, the light-duty vehicle contribution to peak hourly ozone was reduced by 8 to 12%. This corresponds to a projected reduction of 0.6 to 0.8% in total peak ozone from all sources. Removing only light (C5) olefins provided 67 to 78% of the peak ozone benefit from removal of all olefins. Reducing fuel C5 olefin content was estimated to be 3.5 to 6 times more effective in reducing peak ozone than reducing heavier olefins (C6+) by an equal volume percent. The effect of olefins on predicted ozone was due primarily to a reduction in the reactivity of evaporative, running loss and refueling/storage emissions. There is uncertainty in the predicted effects; in particular, the effect of olefin reduction expressed as a percentage of total peak ozone from all sources may be underestimated.


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    Titel :

    Effect of Gasoline Olefin Composition on Predicted Ozone in 2005/2010 - Auto/Oil Air Quality Improvement Research Program


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1994



    Erscheinungsdatum :

    1994-03-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Schleyer, C. H. / Koehl, W. J. / Leppard, W. R. et al. | British Library Conference Proceedings | 1995



    Effects of Fuel Sulfur Content on Predicted Ozone for Years 2005/2010 - Auto/Air Quality Improvement Research Program

    Schleyer, C. H. / Dunker, A. M. / Yarwood, G. et al. | British Library Conference Proceedings | 1993


    Effects of Fuel Sulfur Content on Predicted Ozone for Years 2005/2010 — Auto/Oil Air Quality Improvement Research Program

    Dunker, Alan M. / Pollack, Alison K. / Schleyer, Charles H. et al. | SAE Technical Papers | 1993


    Effects of Gasoline Composition on Evaporative and Running Loss Emissions - Auto/Oil Air Quality Improvement Research Program

    Hochhauser, Albert M. / Benson, Jack D. / Painter, Louis J. et al. | SAE Technical Papers | 1992