An improvement of coast down method used for vehicle tire rolling resistance determination at drum benches is described.The method is based on the discovered differential equation solution in form of explicit function “time-distance” for deceleration motion of mechanical system. This solution conforms with the partial solution of Rikkati equation [1]. It eliminates the traditional necessity to find values of the speed as parameter of indirect measuring which contains several sources of error. This simplifies required measurement instruments. A simple but highly accurate way of measuring the inertia moment of rotating bodies, free from the mass limitations, is proposed as an important part of the new method. It does not require a dismounting the rotating bodies and removing them from their supports. Examples showing the new method accuracy, repeatability and reproducibility are presented.


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    Title :

    Coast Down Method in Time and Distance Variables for Tire Rolling Resistance Determination


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2009



    Publication date :

    2009-04-20




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :



    2009-01-0072 Coast Down Method in Time and Distance Variables for Tire Rolling Resistance Determination

    Petrushov, V.A. / Society of Automotive Engineers | British Library Conference Proceedings | 2009


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    Petrushov, V. A. | SAE Technical Papers | 1997


    Tire Rolling Resistance Measurements From Coast-Down Tests

    Dayman, B. | SAE Technical Papers | 1976


    Tire Rolling Resistance Measurements From Coast-Down Tests

    Dayman,B. / Jet Propul.Lab.,US | Automotive engineering | 1976