Control of Braking Force under Loaded and Empty Conditions on Two Wheeler

The Automobile Braking System has a crucial role for safety of the passenger and riding quality of the vehicle. The braking force mainly depends on normal reaction on the wheel and the co-efficient of friction between the tire and the road surface. Whenever a vehicle is loaded, the normal reaction on the rear wheel is increased. Thus the amount of braking force required to halt the vehicle with minimum stopping distance, is based on the pillion load on the vehicle. In this work, in order to vary the braking force in two wheelers, the mechanical leverage which operates the master cylinder is varied based on the pillion load. Thus the amount of braking force developed between ground and tire is varied. This optimum braking force on the disc brake helps in attaining the minimum vehicle stopping distance. In addition to that, it also helps in preventing sliding. Thus the system results in reducing the stopping distance of the two wheelers and providing a better braking efficiency than the conventional braking system.

• M. S. Manikandan
• K. V. Nithish Kumar
• M. Krishnamoorthi
• V. Ganesh

• Braking force
• Master cylinder
• Mechanical leverage
• Minimum stopping distance.

[1] “Brake Design and Safety”, Second Edition, Rudolf Limpert. Bruce A.
Johns and David D. Edmundson, “Motor cycle’s fundamental, service,
repair”, 1983.
[2] Chin, Y. K., Lin, W. C., Sidlosky, D. M. and Sparschu, M. S. “Sliding-mode ABS wheel control”, Proceedings of American control
Conference, pp.79-85, 1992.
[3] Mansour Hadji, Hosseinlou, Hadi Ahadi and Vahid Hematian “A study of the minimum safe stopping distance between vehicles in terms of braking systems, weather and pavement conditions”, Indian Journal of
Science and Technology, ISSN:0974-6846, Vol. 5 No. 10, 2012.
[4] Hans-christofklein, “Brake force control and distribution in passenger cars”, Today and in the future, 845062, SAE India, 1984.
[5] Huei Peng1, and Jwu-Sheng Hu, “Traction/Braking Force Distribution
for Optimal Longitudinal Motion During Curve Following”, Vehicle
System Dynamics, Vol. 26, No. 4, pp. 301-320, 1996.
[6] Jimenez and Felipe, “Analysis of the vehicle Dynamics using Advanced
instrumentation”, Fisita world Automotive congress, Barcelona, 2004.
[7] Nantais, N. and Minaker, “Active four wheel brake proportioning for
improved performance and safety”, SAE technical paper, 2008.
[8] Lee, C-H., Lee, J-M., Choi, M-S., Kim, C-K. and Koh, E-B.
“Development of a semi-empirical program for predicting the braking
performance of a passenger vehicle”, International journal of
Automotive Technology, Vol. 12, No. 2, pp. 193-198, 2011.
[9] Jaehoon Lee, Jonghyun Lee, Seung-Jin and Heo, “Full vehicle Dynamic
modeling for chassis controls”, F2008-SC-021
[10] Peter Frank, “Slip control at small slip values for road vehicle brake
systems”, Periodica Polytecnica mechanical Engineering, Vol. 44, No.1,
pp. 23-30, 2000.
[11] Johnston, M., Leonard, E., Monsere, P. and Riefe, M. “Vehicle brake
performance assessment using subsystem testing and modeling”, SAE
Paper, 2005.
[12] Kim, D. H., Kim, J. M., Hwang, S. H. and Kim, H. S. “Optimal brake
torque distribution for a four-wheel-drive hybrid electric vehicle stability
enhancement”, Proceedings of IMechE, Part D: Journal of Automobile
Engineering, Vol. 221, 2007.
[13] Ebner H. and Kuhn, W. “Electronic brake force distribution control
sophisticated addition to ABS”, SAE Transactions, Vol. 101, No. 6, pp.
877-883, 1993
[14] Maron, C., Dieckmann, T., Hauck, S. and Prinzler, H.
“Electromechanical brake system: actuator control development
system”, SAE technical paper, 1997.