An investigation into the different flow structures which exist in the holes of direct injection nozzles and their corresponding large scale acrylic models is described.Some effects of different experimental methods are discussed. Results obtained under steady flow conditions are compared with those from transient tests. The correct use of large scale models is found to enable the interpretation and clarification of the results obtained with actual nozzles.The effect of flow cavitation in the nozzle holes is clarified. New information concerning the state of the injected fuel is included. The relationships between cavitation and the spray abnormality, hydraulic flip, and between cavitation and atomization are established. The spray characteristics of single hole nozzles are contrasted with those of standard multihole sac type nozzles. The causes of unequal sprays in two stage VCO injectors are studied, and a new flow singularity, which causes a spray abnormality and flow rate discontinuity is identified.


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    Titel :

    Direct Injection Diesel Sprays and the Effect of Cavitation and Hydraulic Flip on Atomization


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Soteriou, Celia (Autor:in) / Smith, Mark (Autor:in) / Andrews, Richard (Autor:in)

    Kongress:

    International Congress & Exposition ; 1995



    Erscheinungsdatum :

    1995-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Direct Injection Diesel Sprays and the Effect of Cavitation and Hydraulic Flip on Atomization

    Soteriou,C. / Andrews,R. / Smith,M. et al. | Kraftfahrwesen | 1995


    Modeling Atomization of High-Pressure Diesel Sprays

    Bianchi, G.M. | Online Contents | 2001


    Spray Angle and Atomization in Diesel Sprays

    Varde,K.S. / Popa,D.M. / Varde,L.K. et al. | Kraftfahrwesen | 1984


    Spray Angle and Atomization in Diesel Sprays

    Popa, D. M. / Varde, K. S. / Varde, L. K. | SAE Technical Papers | 1984


    Further Studies of Cavitation and Atomization in Diesel Injection

    Soteriou, Celia / Smith, Mark / Andrews, Richard | SAE Technical Papers | 1999