A Study on Safety Intelligent Driving System for Heavy Truck Downhill in Mountainous Area
Published October 5, 2018 by SAE International in United States
Downloadable datasets for this paper availableAnnotation of this paper is available
Mountainous area makes up more than half of the whole land area of China, the road of which is full of ups and downs. Heavy commercial vehicles as the main means of transport in mountainous areas, braking torque recession, even brake failure, often happens because of the overheating in long downhill journey, which seriously threatens the safety of the driving. Therefore, this paper presents an intelligent assistance system based on Geographic Information System and vehicle dynamics. The main brake duration and heat generation can be effectively reduced through adjusting the speed at the slope top, applying the engine auxiliary brake in the initial stage and choosing braking strategy appropriately, in order to prolong the downhill driving distance and improve the safety during continuous braking. This paper characterizes and analyses the road gradients and their effects on braking heat generation. To analysis the temperature rising characteristics of the main brakes under different initial speeds, the temperature rise model of the brake is established. Furthermore, the effectiveness has been recognized by comparing the main brakes’ temperature variation in real vehicle test. Research shows that an apparent temperature rise reduction performance of the typical slopes is achieved in the simulation, and the test results show a better performance of reducing braking temperature on actual road.
CitationQuan, J., Zhao, Y., Tan, G., Xu, Y. et al., "A Study on Safety Intelligent Driving System for Heavy Truck Downhill in Mountainous Area," SAE Technical Paper 2018-01-1887, 2018, https://doi.org/10.4271/2018-01-1887.
Data Sets - Support Documents
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|[Unnamed Dataset 2]|
- Chang, Z. , “The Thermal Recession and Thermal-Mechanical Coupling Analyses of Drum Brake,” Yanshan University, 2011.
- Dong, Y. , “Study and Development of Engine Braking Technology,” Automotive Engines (03), 2006.
- Shen, Y. , “Potential Danger and Improvement of Air Pressure Water Spraying Device,” Highway and Transportation Measures (02):5-7, 2007.
- Zheng, C. , “Analysis of Rescue Lane Design Method on Mountain Way,” Traffic Science and Technology (04):56-58, 2009.
- Wu, C., Xu, M., Huiyuan, L. et al. , “Air Losing Experimental Study of Heavy Vehicle Hydraulic Retarder,” Vehicle and Power Technology (01), 2012.
- Liao, J. , “Freeway Research on Highway Alignment Optimization Methods of Long Steep Downgrades on Expressway,” Beijing Jiao tong University, 2016.
- Wang, H. , “Adaptive Research on Endurance Braking Systems of Commercial Vehicle in Mountainous Expressway,” Chang’an University, 2012.
- Yinqiao, X. , “Sustained Braking Performance Research of Light Truck,” Nanjing University of Science and Technology, 2016.
- Wang, P. , “The Study of Heavy Vehicles Persistent Brake,” Automotive Practical Technology 07, 2014.
- Yu, Z. , The Theory of Vehicle Fifth Edition (Beijing: Machine Press, 2009).
- Yang, S. and Tao, W. , Heat Transfer Third Edition (Beijing: Higher Education Press, 1998).
- Qianbin, T. , “Research on the Truck Drum Inner Wall Temperature Inverse of Brake and Its Application,” Chongqing Jiao tong University, 2016.
- Ronggui, Z., Lisheng, J., and Jiafeng, S. , “The Study of Highway Gradient and Grade Length Limit,” Technology of Highway and Transport Highway Longitudinal Slope and Slope Length Limit (07), 2004.