Freight train air brake modelling with emergency valves,Advances in Mechanical Engineering

当前位置： X-MOL 学术 › Adv. Mech. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Freight train air brake modelling with emergency valves
Advances in Mechanical Engineering ( IF 2.1 ) Pub Date : 2024-04-06 , DOI: 10.1177/16878132241242953
Fan Jiang ₁ , Kai Li ₁ , Honghua Wu ₂ , Shihui Luo ₂

Affiliation

The 120-type air brake system is unique around global rail industry and critical for Chinese freight train operation. Existing research about its simulations does not include detailed models for the emergency brake valves. This paper filled this research gap by developing a detailed fluid dynamic air brake system with a focus on the emergency brake valve. The working principle of the emergency brake vale was reviewed. The brake system model was based on gas flow governing equations (mass and momentum) and orifice flow equations. The model was validated by comparing with measured data from a 150-wagon train. Four braking scenarios were compared. The simulated maximum cylinder pressure was only 5 kPa out of the range of the measured data. The maximum difference regarding the time when cylinder pressure reaches maximum pressure was 4 s. The simulation results have also shown variable switch pressure points for the two-stage brake valve. This is agreed by the measured results and was not shown in previously published research.

更新日期：2024-04-06

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>