--- title: "LRV - CEM - Regenerative center" canonical: "/lrv-cem-regenerative-center" published: 2026-09-21 --- # LRV - CEM - Regenerative center ## Frame ## Frame **Rail** **LRV** **CEM Excel** **Deformation units** **Regenerative center** **Override protections** ## Frame ### Gas-hydraulic damper ###### REGENERATIVE CENTER ##### Gas-hydraulic damper ##### Extrusion Bolts – Cold Drawn Bars (CDB) ##### The gas-hydraulic damper with friction springs combines the functionality of a single acting damper with a friction spring. This design not only dissipates energy during compression but also provides additional stroke and efficient energy absorption under tensile loads. ##### Product features: - Integrated system combining energy absorption via a gas-hydraulic capsule and a set of friction springs - Energy absorption during both compression (gas-hydraulic capsule) and tension (friction spring set) - Protection against the snatch effect **Customer benefits** ### Single acting damper ###### REGENERATIVE CENTER ##### Single acting damper ##### Extrusion Bolts – Cold Drawn Bars (CDB) ##### The single-acting damper absorbs energy in compression, effectively reducing impact forces during coupling and collisions. Its regenerative function optimizes energy dissipation, minimizing deceleration for enhanced safety. The adjustable design enables precise force distribution control to meet specific vehicle configuration and operational needs. ##### Product features: - Regenerative energy absorption during daily coupling operations. - The buffer can be optimized so that the deceleration is always reduced to a minimum. - Optimized weight - Integrated anti-rotation function **Customer benefits** ### Double acting damper ###### REGENERATIVE CENTER ##### Double acting damper ##### Extrusion Bolts – Cold Drawn Bars (CDB) ##### The double-acting damper absorbs energy in compression and in expansion, providing superior protection in dynamic applications. Its regenerative function ensures efficient energy dissipation while keeping deceleration as low as possible. The damper’s adjustable settings enhance performance and adaptability across various operating conditions. ##### Product features: - Regenerative energy absorption during daily coupling operations. - The damper can be optimized so that the deceleration is always reduced to a minimum - Protection against the snatch effect **Customer benefits** ### Friction spring damper ###### REGENERATIVE CENTER ##### Friction spring damper ##### Extrusion Bolts – Cold Drawn Bars (CDB) ##### The friction spring damper is designed to efficiently absorb energy during buff impact and draft, using a friction spring system. It features a regenerative function that ensures smooth deceleration and minimizes forces. This damper enhances safety and performance in demanding environments by effectively controlling energy dissipation. ##### Product features: - Non velocity dependent Non temperature dependent Symmetrical stroke in buff and draft **Customer benefits** ### Crash buffer ###### REGENERATIVE CENTER ##### Crash buffer ##### Extrusion Bolts – Cold Drawn Bars (CDB) ##### Dellner crash buffers provide controlled energy absorption and structural protection in collision events. Engineered to meet EN 15227 and VDV 152, our solutions are designed for LRV, Tram-Train, Metro and Multiple Unit (MU) applications and can be tailored to specific vehicle requirements. Proven designs, including two-stage side buffers, combine high crash performance with compact integration and reliable operation. **Customer benefits** ### Anti climbers ###### REGENERATIVE CENTER ##### Anti climber ##### Anti climber ##### Anti-climbers are designed to avoid climb upward of vehicles in case of a collision. The product can be a plate or beam for direct mounting to the vehicle coach or in combination with a tube for plastic deformation. In the case of energy absorption, we offer you a full package of crash buffer technology. **Customer benefits** ### Crash beams ###### REGENERATIVE CENTER ##### Crash beams ##### Crash beams ##### Dellner crash beams are engineered for LRV, LRT, Tram-Train, VLRV and people mover applications across different track gauges and vehicle configurations. ##### We provide complete solutions covering design, simulation, structural verification and crash buffer integration, tailored to customer requirements. Our proprietary crash simulation tools enable optimization of CEM performance for specific crash scenarios, with solutions capable of managing crash loads up to 750 kN. **Customer benefits** ### Combined crash ###### REGENERATIVE CENTER ##### Combined crash ##### Combined crash energy absorption system ##### Dellner crash beams with side buffers are engineered to protect vehicle structures by absorbing and managing impact energy during collision events. Designed in accordance with EN 15227 and VDV 152, our solutions support the crashworthiness requirements of modern rail vehicles. ##### With extensive CEM experience since 2008, Dellner offers application-specific solutions for LRV, Tram-Train, Metro and Multiple Unit (MU) vehicles. Our proven two-stage side buffer and bumper configuration provides controlled energy absorption and reliable structural protection." **Customer benefits** ### Crash boxes ###### REGENERATIVE CENTER ##### Crash boxes ##### Crash boxes ##### Crash boxes offer a very high energy absorption capacity. They work parallel to the coupler and are typically combined with anti-climbers for optimal structural collapse, because they are not designed to transfer high vertical and lateral loads. Due to their unit cell configurations, crash box structures offer excellent mechanical performance. **Customer benefits** **Gas-hydraulic damper** **Single acting damper** **Double acting damper** **Friction spring damper** **Crash buffer** ## Frame