The code provides test procedures and methods of calculating a brake rating from the data obtained for brakes used in highway commercial vehicles over 4.5 T (10 000 lbs) GVWR air and hydraulic. Some general correlation may be expected between brake ratings established by this means and those obtained from vehicle tests such as outlined in SAE J880. The brake rating power, kW (hp) calculated by conduct of this code is an arbitrary index of performance of the brake and drum when tested by this procedure and may be appreciably different from the values obtained by other techniques.
The Truck and Bus Foundation Brake Committee of the Truck and Bus Brake and Advanced Driver Assistance Systems Steering Committee is responsible for developing, reviewing, and approving recommended practices, standards, and information reports relative to foundation brakes; including brake lining friction materials, manual and automatic brake adjusters and their interfacing as utilized on trucks, tractor-trailer combinations, and buses over 10,000 lbs (4500 Kg) GVWR designed primarily for highway use. The activities of this committee are to be directed so as to concentrate on heavy duty foundation brakes and their corresponding lining friction materials, and not, in any way to duplicate the efforts of any other SAE committee.
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Brake Power Rating Test Code—Commercial Vehicle Inertia Dynamometer
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Brake Power Rating Test Code—Commercial Vehicle Inertia Dynamometer
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