Mechanisms that influence emissions of polynuclear aromatic hydrocarbons (PNA) from engines have been investigated with an on-line fluorescence PNA detector. PNA can accumulate at the surfaces and within the deposits of a combustion chamber, and some of these PNA are vaporized during engine operation. Increased heat input to established combustion chamber deposits (for example, from increased spark advance, knock, or high-speed operation) enhances PNA emissions, at least temporarily.At several steady speeds, PNA emissions were compared, using a rotary engine vehicle and a similar car with a reciprocating spark ignition engine. With the emission control system disabled, the rotary engine automobile exhibits very high PNA emissions relative to the piston engine. However, exhaust emission control devices, such as the thermal reactor on the rotary engine car, can be highly effective in destroying PNA.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Mechanisms of Polynuclear Aromatic Hydrocarbon Emissions from Automotive Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Laity, J. L. (author) / Malbin, M. D. (author) / Doty, W. I. (author) / Haskell, W. W. (author)

    Conference:

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



    Publication date :

    1973-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Polynuclear Aromatic Hydrocarbon Emissions from Automotive Engines

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


    Automotive Emissions of Polynuclear Aromatic Hydrocarbons

    Gross, George P. | SAE Technical Papers | 1974


    The Effect of Unleaded Fuel Composition on Polynuclear Aromatic Hydrocarbon Emissions

    Newhall, H. K. / Ballinger, P. R. / Jentoft, R. E. | SAE Technical Papers | 1973


    Note on Unburned Hydrocarbon Emissions from Automotive Engines

    F. Fendell / S. Fink / P. Feldman | NTIS | 1981