Tests were run to evaluate the braking performance of a fully mechanical two circuit, two sensor antilock brake system. Straight line stops, stops in a turn and stops in a lane change were utilized in this evaluation. Test surfaces included dry asphalt, wet asphalt, wet smooth troweled concrete, wet highly polished concrete, wet sealed (Jennite) asphalt and a split (left to right) coefficient of friction roadway. Test speeds ranged from 35 to 60 mph and the vehicle was run empty as well as fully loaded to its Gross Vehicle Weight Rating (GVWR). Panic (constant pedal force in excess of 100 lbs) and driver best effort (pedal force modulated to keep vehicle under driver directional control) brake applications were made for each test condition. For the panic applications, stops were made with the ABS both active and inactive. Best effort stops were all performed with the ABS off. Additionally the EEC 71-320 Annex X brake tests were run to become familiar with the European method of evaluating antilock brake systems. The report describes the test program and analyzes the data to determine the braking performance gains provided by the antilock system.
Light Vehicle Antilock Brake Research Program. Report No. 2. Evaluation of a Fully Mechanical, Two Circuit, Two Sensor System
1988
58 pages
Report
Keine Angabe
Englisch
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