Full Power Hydraulic Brake System Based on Double Pipelines for Heavy Vehicles

查看全文 作　　者：GONG Mingde WEI [1]Hailong

机构地区：[1]College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China

出　　处：《Chinese Journal of Mechanical Engineering》索引2011年第24卷第5期,共8页

基　　金：supported by Basic Scientific Research Operation Cost of Central Universities of China (Grant No. 200903168) 摘　　要：The hydraulic caliper disc brake system with air-over-oil is widely adopted at present for heavy vehicles,which makes use of air pressure system propelling the hydraulic pressure system acting on friction plates divided and combined for braking.There are some disadvantages such as pneumatic components failure,dust polluted and produce lots of heat in hydraulic caliper disc brake system.Moreover,considering the demands of the high speed,heavy weight,heavy load and fast brake of heavy vehicles,the full power hydraulic brake system based on double pipelines for heavy vehicles is designed and analyzed in this paper.The scheme of the full power hydraulic brake system,in which the triloculare cylinder is controlled by dual brake valve,is adopted in the brake system.The full power hydraulic brake system can accomplish steering brake,parking brake and emergent brake for heavy vehicles.Furthermore,electronic control system that is responsible for coordinating the work of hydraulic decelerator and hydraulic brake system is developed for different speed brakes.Based on the analysis of the influence of composed unit and connecting pipeline on braking performance,the nonlinear mathematic model is established for the full power hydraulic brake system.The braking completion time and braking pressure in braking performance of the double-pipeline steering brake and parking brake are discussed by means of simulation experiments based on Matlab/Simulink,and the simulation results prove that the braking performance of steering brake and parking brake meets the designing requirement of the full power hydraulic brake system.Moreover,the test-bed experiments of the brake system for heavy vehicles are carried out.The experimental data prove that the braking performance achieves the goal of the design,and that the full power hydraulic brake system based on double pipelines can effectively enhance braking performance,ensure braking reliability and security for heavy vehicles. 关键词：液压制动系统重型车辆功率复线 Simulink 盘式制动系统车辆制动系统非线性数学模型

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Full Power Hydraulic Brake System Based on Double Pipelines for Heavy Vehicles

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