Papers by Keyword: Brake Performance

Abstract: The power and brake performance of wheeled construction machinery are separately detected on different test equipment in present chassis detection line. A new method is put forward in the veiw of high cost, large area occupied and low treatment efficiency of the traditional line. A DC dynamometer is provided as the power absorbing device and the reverse drag device to combine the two separate platforms in the proposed method, and the mathematical model of DC dynamometer is built based on the principle of chassis performance test. The parameter of dynamometer is determined by calculating, and power and brake detection integration of the wheeled construction machinery is achieved on the integrated test platform.

Abstract: Based on the application of the vehicle parameters, the article analyzed the brake process and its performance by MATLAB. The article proposed analytical method and process of automotive brake ideal conditions by simulation software MATLAB. And through drawing the ideal front and rear brake force distribution characteristics, calculated and analyzed the wheel brake force, adhesion coefficient and brake strength. Also the article provided the foundations of convenient calculation method and visual analysis for automotive brake performance.

Abstract: After the traffic accident, it needs to confirm the cause and responsibility of the accident, and whether the bad brake performance is the important reason for the accident. At first, this paper has put forward the road test standard of the brake performance and comprehensively analyzed the braking process. Except the theoretical analysis, this paper has made a quantitative research on the influence of people, vehicles, road, environment and testing instrument on the brake result of the road test with the experiments and put forward some suggestions to reduce the influence of the test results.

Abstract: The automobile braking will generate a lot of friction heat; the friction heat can reduce the brake performance and affect the safety of the automobile. This article analyzed the mechanism that heat generated by brake friction, established the mathematical model of automotive brake friction heat, and analyzed the influencing factor of braking friction heat through model parameters. Meanwhile, the finite element model of automobile brake disc is built; the brake friction heat is analyzed by the finite element thermal thermodynamics, the formation process of the friction heat, the change situation of friction heat and the deformation of brake disc are obtained. The effect of friction heat on the brake performance is analyzed; the research will provide theoretical guidance for the design of automotive brake discs.

Abstract: Discontinuously reinforced aluminum (DRA) composites are attractive for a large range of engineering applications because of its excellent wear-resistance, high thermal conductivity and light weight etc. In this paper, DRA composites were designed and fabricated especially for automotive application, and their properties were measured. Brake discs of DRA composites were manufactured and their braking performances were investigated, including brake velocity, brake pressure, brake torque, brake deceleration, brake time and surface temperature etc. The test results show DRA composites exhibit an excellent braking performance.