Three cars have been operated for approximately 8000 miles on each of four unleaded gasolines. These gasolines encompassed varied levels of C6-C8 aromatics and varied polynuclear aromatic (PNA) content. Exhaust PNA emissions and lube oil PNA content were measured periodically during the course of mileage accumulation.Results of this study show that increases in both light C6-C8 fuel aromatics and fuel-contained PNAs can result in significantly increased exhaust PNAs. Vehicles meeting increasingly stringent hydrocarbon (HC) and carbon monoxide (CO) emissions standards emit greatly reduced quantities of exhaust PNAs, though the rate of lube oil PNA accumulation appears to be unaffected by emissions control systems. Accumulated lubricating oil mileage was found to correlate with increased PNA emissions with a high level of statistical significance. This may be the result of an observed increase in lube oil PNA content with mileage accumulation. Oil change was found to result in an immediate reduction in PNA emissions.


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    Titel :

    The Effect of Unleaded Fuel Composition on Polynuclear Aromatic Hydrocarbon Emissions


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Newhall, H. K. (Autor:in) / Ballinger, P. R. (Autor:in) / Jentoft, R. E. (Autor:in)

    Kongress:

    1973 SAE International Off-Highway and Powerplant Congress and Exposition ; 1973



    Erscheinungsdatum :

    01.02.1973




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Begeman, Charles R. / Colucci, Joseph M. | SAE Technical Papers | 1970



    Mechanisms of Polynuclear Aromatic Hydrocarbon Emissions from Automotive Engines

    Laity, J. L. / Malbin, M. D. / Doty, W. I. et al. | SAE Technical Papers | 1973


    Unleaded fuel only

    Kraftfahrwesen | 1984


    Automotive Emissions of Polynuclear Aromatic Hydrocarbons

    Gross, George P. | SAE Technical Papers | 1974