|Table of Contents|

Influence of train tail exhaust device on longitudinal force of train(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2012年05期
Page:
43-49
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Influence of train tail exhaust device on longitudinal force of train
Author(s):
WEI Wei;  HU Yang
Key Laboratory of Vehicle Engineering Advanced Technology of Liaoning Province University, Dalian Jiaotong University, Dalian 116028, Liaoning, China
Keywords:
heavy-haul train;  longitudinal dynamics;  train tail exhaust device;  coupler force;  brake system simulation;  airflow
PACS:
U270.35
DOI:
-
Abstract:
Based on airflow theory and multi-rigid dynamics, a train combined simulation model of longitudinal dynamics and air brake system with train tail exhaust device was established, the transient numerical solution of airflow in the brake system was calculated, the performance of brake system was obtained, and train longitudinal dynamics was simulated synchronously. Simulation result shows that for 20 000 t train, tail exhaust device can reduce the maximum coupler force by 54% at full application brake, which is more obvious. The greater the pressure reduction of brake pipe is, the smaller the coupler force is. Now the fixed pressure reduction in tail exhaust device is 50 kPa, and it should be modified according to the common pressure reduction. The exhaust speed and lag time of tail exhaust device have little effect on train coupler force. When tail exhaust device is replaced with locomotive, the coupler force reduces under full service application, thegreater the reduction of service application is, the greater the difference between locomotive and tail exhaust device is. When the reduction is 50 kPa, there is no difference between locomotive and tail exhaust device. 4 tabs, 10 figs, 16 refs.

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Last Update: 2012-11-05