Analysis of Factor Influence on Longitudinal Impulse of Heavy-Haul Train with ECP Braking System

Although simultaneous braking or releasing across the whole train is possible in the heavy-haul train with electronically controlled pneumatics (ECP), the situation of the train will be more complex which leads to the huge longitudinal impulse due to the increase in the number of the vehicles. Therefore, the combined simulation model of ECP braking system and longitudinal dynamics was built to analyze the influence of marshalling number, grouping, and gradient on the train longitudinal impulse. The results show that on the straight rail, the marshalling number has no effect on the longitudinal impulse while the “1+2+1” grouping is the best for reducing the longitudinal impulse, next is “2+2+0,” “2+0+2” worst. When all the train is on the same ramp, the impulse level is the same as that on the straight road, which cannot be influenced significantly by the gradient. The front of the train on the ramp-flat change point is the most dangerous braking position; with the increase of gradient, the maximum coupler force is also increasing, but the relationship between the maximum coupler force and the number of vehicles on the ramp cannot be changed.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 279-288

Subject/Index Terms

Filing Info

  • Accession Number: 01864530
  • Record Type: Publication
  • ISBN: 9780784481547
  • Files: TRIS, ASCE
  • Created Date: Nov 21 2022 4:20PM