Increasing concern for the environment and the impending scarcity of fossil fuels requires continued development in hydrocarbon combustion science. For compression-ignition engines, adding oxygenated compounds to the fuel can reduce noise, soot formation, and unburned hydrocarbons while simultaneously increasing thermal efficiency.In order to reliably model and design compression-ignition engines to use new fuel blends, accurate spray characteristic data is required. In this study, the spray characteristics of various blends of the oxygenated compound di-n-butyl ether (DNBE) with standard EN590 Diesel fuel are presented, including spray cone angle and spray penetration length for both liquid and gas phases. The experiments were conducted in a spray chamber at ambient conditions of 50 bar and 800 K, simulating TDC conditions in a Diesel engine. Injection pressures were varied from 700-1600 bar. Mie-scatter and shadowgraphy techniques were used to measure the liquid phase and gas phase spray characteristics, respectively. The lift-off length and ignition delay is investigated using OH-measurement technique. The spray structure of the DNBE alone and its blends with Diesel fuel have shown a larger spray angle and shorter penetration length than with the pure Diesel fuel, providing improvements to atomization behaviour, and thus expected increases in performance.


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    Title :

    Experimental Investigation of the Spray Characteristics of Di-n-Butyl Ether (DNBE) as an Oxygenated Compound in Diesel Fuel


    Additional title:

    Sae Technical Papers


    Contributors:
    Beeckmann, J. (author) / Aye, M. M. (author) / Peters, N. (author) / Gehmlich, R. (author)

    Conference:

    International Powertrains, Fuels & Lubricants Meeting ; 2010



    Publication date :

    2010-05-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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