A specific design for best-in-class performance
Alstom offers a full range of linear, friction and bi-mode dampers to control train dynamic behaviour and preserve the bogie and train structure.
Thanks to a specific internal design, the oil flow within Dispen dampers is very accurate. It enables the damping force to be better controlled and thus, to preserve mechanical structures connected to dampers by up to 20%.
For friction dampers, used in anti-yaw applications and between carbodies on a train, this specific design ensures an improved damping force reactivity at low speed with a significant positive impact on the train’s dynamic behaviour.
The bi-mode damper, our latest innovation, adapts damping force in curves thanks to an ON/OFF mode, allowing to reduce track and wheel/wear while enhancing passengers’ safety and comfort. 100% mechanical, the bi-mode is a plug & play damper offering high reliability.
Dispen dampers comply with the strictest technical specifications and the requested force/speed. They ensure effective damping of all types of vibrations, whatever the amplitude and frequency.
Low lifecycle costs
Dispen dampers guarantee operators a life duration of up to 2.5 M km for linear dampers and up to 4 M km for friction and bi-mode dampers.
Thanks to the design-for-maintainability of Dispen dampers and Alstom’s experience in maintenance, operators can launch fleet maintenance at the right time and could save up to 50% in costs, compared to a new build acquisition. They can indeed implement the maintenance of the dampers by themselves, just by requesting us the necessary kits (Main parts) to be replaced. This approach significantly optimises costs of ownership and is also key for sustainable development.