Abstract
Most commercial vehicles such as buses and trucks use an air brake system, often equipped with an S-cam drum brake, to reduce their speed and/or to stop. With a drum brake system, the clearance between the brake shoe/pad and the brake drum may increase because of various reasons such as wearing of the brake shoe and/or brake drum and drum expansion caused by high heat generation during the braking process. Hence, to ensure proper functioning of the brake system, it is essential that the clearance between the brake shoe and the brake drum is monitored. In this paper, we present a mathematical model for the mechanical subsystem of the air brake system that can be used to monitor this clearance. This mathematical model correlates the push rod stroke transients and the brake chamber pressure transients. A kinematic analysis and a dynamic analysis of the mechanical subsystem of the air brake system were performed, and the results are corroborated with experimental data.
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References
Garrett, T. K., Newton, K. and Steeds, W. (2001). The Motor Vehicle. 13th Edn. SAE. Warrendale. Pennsylvania.
Heusser, R. B. (1991). Heavy truck deceleration rates as a function of brake adjustment. SAE Paper No. 910126.
Huang, Y. M. and Shyr, J. S. (2002). On pressure distribution of drum brakes. ASME J. Mechanical Design, 124, 115–120.
John, S., Richard, F., Hoover, N., Robinette, R. and Deering, D. (2003). Brake performance testing and truck runaway analysis. SAE Paper No. 2003-01-3396.
Kandt, L. D., Reinhall, P. G. and Scheibe, R. R. (2000). Determination of air brake adjustment from air pressure data. Proc. IMechE, Part D: J. Automobile Engineering, 215(N1), 21–29.
Karthikeyan, P. and Subramanian, S. C. (2009). Development and modelling of an electropneumatic brake system. Proc. 2009 IEEE Intelligent Vehicles Symp., Xi’an, China, 858–863.
Limpert, R. (1999). Brake Design and Safety. 2nd Edn. SAE. USA.
Meirovitch, L. (1970). Methods of Analytical Dynamics. McGraw-Hill, Inc. New York.
NCRB (2009). ADSI 2008, Available at http://ncrb.nic.in, Accessed April 2009.
Radlinski, R. W. (1987). Braking performance of heavy U.S. vehicles. SAE Paper No. 870492.
Shaffer, S. J. and Alexander, G. H. (1995). Commercial vehicle brake testing — Part 1: Visual inspection versus performance-based test. SAE Paper No. 952671.
Subramanian, S. C. (2006). A Diagnostic System for Air Brakes in Commercial Vehicles. Ph.D. Dissertation. Texas A & M University.
Stutts, D. S. (2010). Analytical Mechanics — Lagrange’s Equation and its Application, http://web.mst.edu/~stutts/supplementalnotes/lagrangeeqn05.pdf, Accessed January 2010.
Subramanian, S. C., Swaroop, D. and Rajagopal, K. R. (2006). A diagnostic system for air brakes in commercial vehicles. IEEE Trans. Intelligent Transportation Systems, 7, 360–376.
Wang, X., Liang, Y., Huang, C. and Ying, G. (2007). Research on dynamic performance of drum brake. SAE Paper No. 2007-01-3673.
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Sonawane, D.B., Narayan, K., Rao, V.S. et al. Model-based analysis of the mechanical subsystem of an air brake system. Int.J Automot. Technol. 12, 697–704 (2011). https://doi.org/10.1007/s12239-011-0081-1
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DOI: https://doi.org/10.1007/s12239-011-0081-1