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Exteriors Fuel economy Human Factors and Ergonomics Suppliers Commercial vehicles Truck and Bus Foundation Brake Committee

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Standard

Brake Power Rating Test Code—Commercial Vehicle Inertia Dynamometer
2000-04-20
HISTORICAL
J971_200004
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.
Standard

Brake Power Rating Test Code--Commercial Vehicle Inertia Dynamometer
2008-08-21
CURRENT
J971_200808
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.
Standard

BRAKE RATING TEST CODE – COMMERCIAL VEHICLE INERTIA DYNAMOMETER
1966-09-01
HISTORICAL
J971_196609
The code provides test procedures and methods of calculating a brake rating from the data obtained. At this time, the procedure has been developed to cover only brakes of the sizes and types generally used on commercial vehicles. 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. However, the effects of brake environment as installed in various vehicles are not considered in this laboratory procedure. The code may be used as a supplement to SAE J667, or it may be used independently. Other methods of measuring energy absorption capacity and establishing a brake rating other than those described herein may be equally valid.
Standard

Manual Slack Adjuster Test Procedure
2014-04-28
CURRENT
J1461_201404
This SAE Recommended Practice is intended for testing of manual slack adjusters as they are used in service, emergency, or parking brake systems for vehicles that can be licensed for on-road use.
Standard

Brake Block Effectiveness Rating
2014-10-27
HISTORICAL
J1802_201410
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Block Effectiveness Rating
2019-06-06
CURRENT
J1802_201906
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Block Effectiveness Rating
2001-08-07
HISTORICAL
J1802_200108
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Block Effectiveness Rating
2008-12-17
HISTORICAL
J1802_200812
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Dynamometer Squeal Noise Test Procedure for Commercial Vehicles with Air Brakes
2023-06-02
CURRENT
J3165_202210
This SAE Recommended Practice applies to commercial vehicles above 4540 kg of gross vehicle weight rating equipped with air brakes used under normal operating conditions. The procedure incorporates high and low-temperature test matrices, but does not fully account for the effects of the environment on brake squeal. Much research is currently underway in this area. This document defines brake squeal as a peak noise level of at least 80 dB(A) between 500 Hz and 17 kHz for air disc and drum brakes on on-road vehicles.
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