A detailed study of two commercial turbocharger compressor impellers with a parallel wall vaneless diffuser is reported. The study shows that present turbocharger compressor maps from different sources cannot be reliably compared as random errors can amount to ±0.05 (5 points) on efficiency (20:1 odds). Vaneless diffuser traverses reveal a flow field with backflow and separated regions. The quantitative traverse results reveal the level of uncertainty existent today in such basic deduced parameters as slip factor, backflow loss, rotor efficiency and diffuser recovery. A fully bladed and cutback bladed impeller are compared. Further work is outlined.


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    Titel :

    Turbocharger Compressor Performance Evaluation and Critical Flow Field Measurements


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Japikse, David (Autor:in) / Goebel, Jay (Autor:in)

    Kongress:

    1979 Automotive Engineering Congress and Exposition ; 1979



    Erscheinungsdatum :

    01.02.1979




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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