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The Freight Train Emergency Brake System and a Method to Calculate Stop Distance and Time
Technical Paper
2007-01-0721
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Determining the arrival time for a freight train at a railroad crossing and how the train engineer could affect the arrival is a common question. This paper discusses the freight train brake system, the freight train makeup variables and considerations, and a method to calculate the freight train brake to stop time and distance. The pneumatic brake system, AB brake valve, air propagation rate, braking ratios, braking efficiencies, wheel/shoe adhesions, and the brake system development times are addressed. With the ability to calculate the change in speed, the freight train change in arrival time at a crossing can be determined.
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Citation
Bentley, J. and Bentley, J., "The Freight Train Emergency Brake System and a Method to Calculate Stop Distance and Time," SAE Technical Paper 2007-01-0721, 2007, https://doi.org/10.4271/2007-01-0721.Data Sets - Support Documents
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References
- Blaine David G. Hengel Mark F. “Brake-System Operation and Testing Procedures and Their Effects on Train Performance,”
- Kifer Cliff Tyler E.R. McAtee R.R. “Why and How to Stop Trains” St. Louis Brake Club, Proceedings of the Sixty-First Annual Convention of The Air Brake Association Chicago, Ill. September 1969
- The “AB” Freight Brake Equipment Instruction Pamphlet No. G-g-5062 Westinghouse Air Brake Company Wilmerding, PA
- Engineering and Design of Railway Brake Systems Chicago, Ill. Air Brake Association 2004