期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Study on a segmented electro-pneumatic braking system for heavy-haul trains 被引量:3
1
作者 Wei Wei Yong Jiang +2 位作者 Yuan Zhang Xubao Zhao Jun Zhang 《Transportation Safety and Environment》 EI 2020年第3期216-225,共10页
The large longitudinal impact of heavy-haul trains is the main factor limiting their development,and the asynchronous nature of train-braking systems is the main cause of this longitudinal impact.In this paper,a segme... The large longitudinal impact of heavy-haul trains is the main factor limiting their development,and the asynchronous nature of train-braking systems is the main cause of this longitudinal impact.In this paper,a segmented electro-pneumatic braking solution fully compatible with the existing freight-train braking system in China is proposed to improve the synchrony of train-braking systems.A simulation model for this braking system is developed based on air-flow theory,the 120 distribution valve and electronic control devices.The braking characteristics obtained from simulations are compared to those from the train-brake testing platform,and show high fidelity.On this basis,the effects of the new braking system on the braking capacity and longitudinal impact of a 20000 t heavy-haul train are analysed by further simulation.The results show that during service brakes,the segmented electro-pneumatic braking system can increase the braking capacity by 4.2–24.7%and reduce the coupler force by 21.6–68.0%.Therefore,it can be seen that the segmented electro-pneumatic braking system is a new type of electro-pneumatic brake that meets the needs of the Chinese railway network.It solves the problem of the longitudinal impact of heavy-haul trains satisfactorily,and its compatibility with the existing braking system(resulting in a reduced modification workload)makes it possible to maintain normal operations on heavy-haul lines while trains undergo modification. 展开更多
关键词 pneumatic brake electro-pneumatic brake AIR-FLOW heavy-haul train braking characteristics longitudinal dynamics coupler force
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部