The program determined the effects of selected modes of disc- and drum-brake component degradation on vehicle braking performance. The results are used to recommend brake-component and system-performance limits of degradation. In this program an inertial brake dynamometer was used to evaluate physically the effects of thin friction materials, friction-material wear characteristics, effects of friction material contamination, and the effects of heat spots, rotor scoring, out-of-round drums and disc lateral runout. Also physically evaluated were sticky wheel cylinders. The other major tasks were the evaluation of side-to-side brake imbalance with vehicle-handling models and vehicle test conducted with sample drivers and the analytical determination of inspection criteria for brake system proportioning (front-to-rear ratio) and brake pedal reserve.


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    Title :

    Component Degradation: Braking System. Volume I - Summary Report


    Contributors:
    T. W. Keranen (author) / H. W. Schwartz (author) / M. J. Jacko (author) / W. R. Tarr (author) / C. K. Leung (author)

    Publication date :

    1974


    Size :

    22 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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