Vehicle road load which must be simulated on a chassis dynamometer for exhaust emission and fuel economy tests is usually determined by on-road coastdown tests. In this study, we divided vehicle road load into rolling resistance and aerodynamic drag, and measured these forces in laboratory tests, using a high-precision chassis dynamometer and a full scale wind tunnel. However two problems arise. One of tham is that tire loss measured on the curved drum of a chassis dynamometer is larger than on the road. Another is that aerodynamic drag measured in a closed-throat wind tunnel, which has blockage effects, is larger than on the road. To determine vehicle road load from laboratory tests, we therefore have to establish how to obtain a correction coefficient for tire loss between the actual road and the drum, and a correction coefficient for aerodynamic drag between the actual road and a wind tunnel. How we get these coefficients is described in this paper. (Wassmann)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    A new approach to measuring road load by chassis dynamometer and wind tunnel tests


    Weitere Titelangaben:

    Ein neues Verfahren zur Messung der Strassenbelastung durch Fahrgestelldynamometer- und Windkanalversuche


    Beteiligte:
    Iwase, H. (Autor:in) / Yamada, S. (Autor:in) / Koga, H. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1982


    Format / Umfang :

    9 Seiten, 9 Bilder, 11 Tabellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A New Approach to Measuring Road Load by Chassis Dynamometer and Wind Tunnel Tests

    Iwase, Hirohide / Koga, Hirokazu / Yamada, Shigeyuki | SAE Technical Papers | 1982


    A New Approach to Measuring Road Load by Chassis Dynamometer and Wind Tunnel Tests

    Iwase,H. / Yamada,S. / Koga,H. et al. | Kraftfahrwesen | 1982


    Road rating with chassis dynamometer

    Mizelle, P.E. / Porter, J.C. / Rescorla, A.R. | Engineering Index Backfile | 1956


    Road rating with chassis dynamometer

    Mizelle, P.E. / Porter, J.C. / Rescorla, A.R. | Engineering Index Backfile | 1955