Brake System Technology (WSPER)

Overview

ESG's wheel slide protection evaluation rig (WSPER) is a real time ‘hardware in the loop’ simulation facility, which improves operational safety and vehicle availability, reduces whole life maintenance costs of wheelsets and consistently maximises braking performance in all adhesion conditions.

WSPER is used by railway organisations such as London Underground, Bombardier Transportation, Siemens Transportation, Knorr-Bremse AG, KBRS (UK), Faiveley Transport and KES GmbH to evaluate the low adhesion braking performance of braking systems, as well as low adhesion mitigation equipment.

 

 ORGANISATION TYPEVALUE OFFERED BY WSPER


Rolling Stock Owner

  • Improved availability & reduction in whole life maintenance cost of wheelsets
  • Consistently maximised braking capability in all adhesion conditions 
  • Simplification of obtaining product approval

Train Operating Company

  • Improved operational safety due to a reduction in poor brake performance incidents
  • Improved availability & reduction in whole life maintenance cost of wheelsets
  • Consistently maximised braking capability in all adhesion conditions


Vehicle Manufacturers

  • Consistently maximised braking capability in all adhesion conditions 
  • Improved availability and reduction in whole life maintenance costs of wheelsets
  • Improved operational safety due to a reduction in poor brake performance incidents

Brake System Manufacturer
  • Simplification of obtaining product approval
  • Reduced cost and time savings compared to track testing
  • Consistently maximised braking capability in all adhesion conditions 

  

Validation, Accreditation and Standards

Combined with the real track based adhesion profiles, the WSPER facility has gained recognition in the UK and overseas for its ability to accurately represent the low adhesion behaviours observed in service.

The multiple car simulation and sander simulation features have been validated against real world measurements using an instrumented train set. ESG is currently in the process of obtaining EN17025 accreditation. WSPER has the capability to provide testing to meet the requirements of:

  • EN15595
  • UIC541-05
  • GM/GN2695
  • LU E6127