The Influence of Mechanical Losses of Drum Brakes on the Braking Force Distribution 892506
It is assumed that braking system of a modern concept motor vehicle should be optimised with respect to a number of different parameters. There are cases where the brake performance under test conditions are significantly below designed (“nominal”) values. Such deviations are often attributed to the friction material characteristics, but there are also other possible causes such as mechanical losses in the brake itself. Contribution to the allocation of mechanical losses in drum brakes and quantification of their influence on the brake performance and braking force distribution is presented in this article.
It was shown that there is a significant influence of mechanical losses on the drum brake performance, especially in unladen vehicles, vehicles equipped with highly sensitive brakes (high brake factor values) and in cases where vehicle is braked on low friction roads. It was shown, also, that the “mechanical losses function” as defined in this paper should be used in considerations rather then widely used “mechanical efficiency coefficient” of a brake.
Citation: Todorović, J., Duboka, C., and Suchy, W., "The Influence of Mechanical Losses of Drum Brakes on the Braking Force Distribution," SAE Technical Paper 892506, 1989, https://doi.org/10.4271/892506. Download Citation
Author(s):
Jovan Todorović, Cedomir Duboka, Wieslaw Suchy
Affiliated:
Faculty of Mech. Engrg. Belgrade Univ. Yugoslavia
Pages: 12
Event:
SAE International Truck and Bus Meeting and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Vehicle Dynamics Related to Braking and Steering-SP-0801
Related Topics:
Braking systems
Logistics
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