The effects of changing the intake-O2 mole fraction on the emissions of gaseous and particulate-bound hydrocarbons (HC and volatiles, respectively) have been examined using low- and high-swirl prechamber diesel engines. HC and volatile emissions indices increased with decreasing O2 mole fraction. For most of the test conditions, the effect of intake-air composition on both of these emissions could be explained by variations in the calculated stoichiometric flame temperature, implying that the combustion process in the engines considered was mainly diffusion-controlled. The results also indicated that, at certain operating conditions, a significant fraction of the volatile matter was contributed by sources unrelated to the main combustion event.


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    Title :

    Effect of Intake-Air Composition on Gas-Phase and Particulate-Bound HC Emissions from Diesel Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Myers, J. P. (author) / Plee, S. L. (author) / Ahmad, T. (author)

    Conference:

    1981 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1981



    Publication date :

    1981-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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