The combustion characteristics of emulsified diesel fuels are investigated in a rapid compression and expansion machine (RCEM). Among the test cases, the 40 water-oil (W/O) fuel injected at 20° before top dead center (BTDC) has shown the best performance with respect to efficiency and NOx and soot emissions. The pressure trace of the 40 W/O fuel is characterized by a longer ignition delay and a lower rate of pressure rise in premixed combustion. High-speed photographs show reduced flame luminosity and lower flame temperature with increasing W/O ratio. Microexplosions of emulsified fuel droplets, which affect the local shape and brightness of the flame, are identified in magnified flame images.


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    Title :

    Experimental study on the combustion characteristics of emulsified diesel in a rapid compression and expansion machine


    Contributors:
    Park, J. W. (author) / Huh, K. Y. (author) / Park, K. H. (author)


    Publication date :

    2000-05-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English







    High Temperature Diesel Combustion in a Rapid Compression-Expansion Machine

    Kobiri, Shigeharu / No, Suk Hong / Kamimoto, Takeyuki et al. | SAE Technical Papers | 1991


    Development of a Rapid Compression-Expansion Machine Simulating Diesel Combustion

    Kobori, Shigeharu / Kamimoto, Takeyuki | SAE Technical Papers | 1995