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Directional Control of Retarder-Equipped Heavy Trucks Operating on Slippery Surfaces
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English
Abstract
Data from driver-controlled vehicle tests are presented to demonstrate the nature of the control difficulties that may result from the use of retarders when the road surface is slippery. Findings from a computer simulation suitable for detailed study of the directional dynamics of retarder-equipped vehicles are described. A simplified analytical method is provided for estimating the influences of lateral acceleration (turning radius at speed), retarder torque, tire/road friction, and vehicle loading on the bounds of controllable vehicle operation.
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Citation
Fancher, P. and Radlinski, R., "Directional Control of Retarder-Equipped Heavy Trucks Operating on Slippery Surfaces," SAE Technical Paper 831788, 1983, https://doi.org/10.4271/831788.Also In
References
- Fancher, P. et al. Retarders for Heavy Vehicles: Evaluation of Performance Characteristics and In-Service Costs. Final (Phase I) Report, NHTSA Contract No. DOT-HS9- 02239, Highway Safety Research Institute University of Michigan February 1981 Available through NTIS Springfield, Virginia 22161
- Retarders for Commercial Vehicles Conference Proceedings, Institution of Mechanical Engineers, Automobile Division London, England 1974
- MacAdam, C.C. et al. A Computerized Model for Simulating the Braking and Steering Dynamics of Trucks, Tractor-Semitrailers, Doubles, and Triples Combinations - PHASE 4 User’s Manual MVMA Project 1197, Highway Safety Research Institute University of Michigan Report No. UM-HSRI-80-58 September 1 1980
- Winkler C.B. Fancher, P.S. Using an Over-the-Road Dynamometer to Test Tractors Equipped with Retarders SAE Paper No. 811259 November 1981