The intersecting hole nozzle, in which each orifice is formed by the converging of two or more child-holes, was proposed for the purpose of enhancing the internal turbulence in diesel nozzle, so as to promote the fuel atomization. In this paper, the internal flow characteristics of a cylindrical hole nozzle and two intersecting hole nozzles are studied by CFD simulation. The results show that, compared with conventional cylindrical hole nozzle, the internal flow of intersecting hole nozzles is characterized with slower rate of pressure decrease in the hole, none or very little cavitation, as well as about 20% to 30% higher discharge coefficients, especially under conditions of high injection pressure. Additionally, the setting of the blind hole as a disturbing domain in the intersecting hole nozzle results in more perturbation for internal flow, which will be beneficial for fuel atomization.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Characterization of Internal Flow of Intersecting Hole Nozzle for Diesel Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Zhong, Wenjun (author) / Long, Wuqiang (author) / Leng, Xianyin (author) / Jin, Yu (author) / He, Zhixia (author)

    Conference:

    JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting ; 2015



    Publication date :

    2015-09-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English