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Dispen dampers: Enhancing the passenger journey

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Dispen dampers at a glance

  • Less rolling stock and infrastructure maintenance (wear)
  • Enhanced passenger comfort
  • Long-lasting and maintainable

Alstom’s Dispen range of dampers offers operators an innovative and effective way of controlling train dynamics, leading to cost reductions and more comfortable travelling conditions.

Designed by specialists

The priorities of the team of experts in charge of designing Dispen dampers in Le Creusot, France, are enhanced damping force, leading to safe and a more comfortable ride, and reduced wear on the mechanical parts connected to the dampers. 

Overall, Alstom offers an extended lifetime based on return of experience & strong design reliability before maintenance. For instance, life cycle for linear dampers is 2.5 million kilometres and up to 4 million kilometres for friction dampers & bi-mode dampers before maintenance. Durability is one of the main criteria driving the design development of the Alstom Dispen dampers.

© Alstom

Optimized Total Cost of Ownership

Dispen dampers reduces wheel-rail contact friction, which in turn lowers the amount and frequency of maintenance due to wheel, axle and track wear. This optimisation also contributed to saving energy when travelling around bends. Operators can reduce cost of ownership even further by maintaining dampers themselves at their chosen time by ordering replacement part kits from us.

Innovation leading

Invisible to the passenger, the bi-mode Dispen damper, which earned an innovation award at the SIFER trade exhibition in Lille in 2015, reduces the lateral acceleration of trains in curves, improving the comfort ride index by up to 20% while reducing track and wheel/wear. 100% mechanical, the bi-mode is a plug & play damper offering high reliability. Being strongly passenger comfort-oriented, Alstom is also working on controlled dampers for better dynamic stability & improved comfort.

cost saving through maintenance (up to)
reduction of wheel and rail wear with the bi-mode damper (up to)
units per year through 2 sites (France and China) of production capacity

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