TORQUE CHARACTERISTICS OF COMMERCIAL VEHICLE BRAKES
A new over-the-road brake dynamometer has recently been developed to measure commercial vehicle brake torque at nearly constant speed. In this paper, results are presented from the initial test program of this vehicle. The program included tests to assess the influence of initial drum temperature and rubbing velocity on brake torque, as well as the occurrence and nature of brake fade and hysteresis effects. Results of these tests indicated that the rate of energy flow into the brake system has a more significant effect on brake torque than initial temperature. Greater hysteresis was found in the S-Cam brakes than in the dual-wedge brakes.
- Presented at the Automotive Engineering Congress and Exposition, Detroit, 24-28 February 1975.
Warrendale, PA United States 15096
- Post, T M
- Fancher Jr, P S
- BERNARD, J E
- Publication Date: 1975
- Features: Figures; Photos; References; Tables;
- Pagination: 12 p.
- TRT Terms: Brakes; Braking performance; Dynamometers; Hysteresis; Temperature; Testing; Torque
- Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00098967
- Record Type: Publication
- Source Agency: Highway Safety Research Institute
- Report/Paper Numbers: SAE #750210 Proceeding
- Files: TRIS
- Created Date: Oct 18 1975 12:00AM