Coastdown tests as presently evaluated for establishing dynamometer settings for road load simulation are satisfactory but cannot be utilized directly for extracting accurate information on aerodynamic vehicle drag. This is primarily due to the speed dependency of the tire rolling resistance, having linear and square term contributions which are not observable in the optimizing parameter evaluation procedure. A critical assessment of such effects is presented and the need for laboratory test results for tires is stated.


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    Titel :

    Coastdown tests: Determining road loads versus drag component evaluation


    Weitere Titelangaben:

    Auslaufversuche von Kraftfahrzeugen: Einfluß der Fahrlast- und der Luftwiderstandskomponenten


    Beteiligte:
    Korst, H.H. (Autor:in) / White, R.A. (Autor:in)

    Erschienen in:

    SAE-Papers ; Sep ; 1-7


    Erscheinungsdatum :

    1990


    Format / Umfang :

    7 Seiten, 8 Bilder, 5 Tabellen, 14 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Coastdown Tests: Determining Road Loads Versus Drag Component Evaluation

    Korst, H. H. / White, R A. | SAE Technical Papers | 1990


    A detailed drag study using the coastdown method

    Passmore,M.A. / Le Good,G.M. / Loughborough Univ.of Technology,GB et al. | Kraftfahrwesen | 1994


    Coastdown/Wind Tunnel Drag Correlation and Uncertainty Analysis

    Pruess, David J. / Romberg, Gary F. / Walter, Joel A. | SAE Technical Papers | 2001


    Coastdown/wind tunnel drag correlation and uncertainty analysis

    Walter,J.A. / Pruess,D.J. / Romberg,G.F. et al. | Kraftfahrwesen | 2001


    A Detailed Drag Study Using the Coastdown Method

    Le Good, G. M. / Passmore, M. A. | SAE Technical Papers | 1994