This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Real-Time Dynamic Brake Assessment for Heavy Commercial Vehicle Safety
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 05, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
This paper summarizes initial results and findings of a model developed to determine the braking performance of commercial motor vehicles in motion regardless of brake type or gross weight. Real-world data collected by Oak Ridge National Laboratory for a U.S. Department of Energy study was used to validate the model. Expanding on previous proof-of-concept research showing the linear relationship of brake application pressure and deceleration additional parameters such as elevation were added to the model. Outputs from the model consist of coefficients calculated for every constant pressure braking event from a vehicle that can be used to calculate a deceleration and thus compute a stopping distance for a given scenario. Using brake application pressure profiles derived from the dataset, stopping distances for light and heavy loads of the same vehicle were compared for various speed and road grades. For a constant brake application pressure profile (i.e. the pressure is relatively constant throughout the entire stop) it was shown that the lighter vehicle was able to stop in a shorter distance than the heavier vehicle in most scenarios other than large uphill grades. Significant changes in weight can be observed through the fuel efficiency of the vehicle to determine if the model needs to be calibrated with new or additional braking events. The model was initially developed for tracking brake performance to inform routine maintenance and the ordering of vehicles in a platoon but can be expanded to other connected and automated research areas.
CitationSiekmann, A., Franzese, O., and Lascurain, M., "Real-Time Dynamic Brake Assessment for Heavy Commercial Vehicle Safety," SAE Technical Paper 2020-01-1646, 2020, https://doi.org/10.4271/2020-01-1646.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- Lascurain, M.B., Franzese, O., and Capps, G. , “Real-Time Dynamic Brake Assessment Proof of Concept Final Report,” ORNL/TM-2011/479, 2011, https://doi.org/10.2172/1028762.
- Shaffer, S. and Long, A. , “U14: Field Testing & Analysis of Braking Performance of In-Service Trucks,” 2009.
- Heusser, R. , “Heavy Truck Deceleration Rates as a Function of Brake Adjustment,” SAE Technical Paper 910126, 1991, https://doi.org/10.4271/910126.
- Booz Allen Hamilton and Radlinski and Associates , “On-Board Sensors for Determining Brake System Performance Report,” 2003, https://doi.org/10.21949/1502738.
- Lascurain, M.B., Franzese, O., Capps, G., Siekmann, A. et al. , “Medium Truck Duty Cycle Data from Real-World Driving Environments: Final Report,” ORNL/TM-2012/420, 2012, https://doi.org/10.2172/1081995.
- Franzese, O., Lascurain, M.B., and Loy, L.W. , “Effect of Heavy-Truck Platooning Fuel-Efficiency Gains on Overall Fuel Efficiency,” Transportation Research Record 2673(5):188-196, May 2019, https://doi.org/10.1177/0361198119840340.
- Capps, G., Franzese, O., Knee, B., Lascurain, M.B. et al. , “Class-8 Heavy Truck Duty Cycle Project Final Report,” ORNL/TM-2008/122, 2008.
- “49 CFR § 571.121—Standard No. 121; Air Brake Systems,” https://www.govinfo.gov/app/details/CFR-2017-title 49-vol 6/CFR-2017-title49-vol 6-sec571-121/summary, Apr. 2020.
- Lascurain, M.B., Capps, G., and Franzese, O. , “Heavy and Overweight Vehicle Brake Testing: Combination Five-Axle Tractor-Flatbed Final Report,” FMCSA-PSV-16-009, 2017, https://doi.org/10.21949/1502942.
- Lascurain, M.B., Capps, G., and Franzese, O. , “Heavy and Overweight Vehicle Brake Testing: Combination Six-Axle, Final Report,” FMCSA-PSV-16-010, 2017, https://doi.org/10.21949/1502943.