Energy Efficient Wagon Construction

12014/TUB: Energy Efficient Wagon Construction


It is well known that especially on the top side of open wagons, like hopper wagons, even at low speeds air flows are created that counteract to the forces that accelerate the wagon. Current approaches to enhance the aerodynamic behavior of wagons are solid closed covers or tarps. But such solutions entail several disadvantages, particularly the complications while loading bulk cargo, but also the disadvantage, that the fastening system requires a higher maintenance effort.

Technical Description

To solve the above mentioned problems, scientists at the Technische Universität Berlin – in cooperation with the Havelländische Eisenbahn AG – have developed a hopper wagon that shows big aerodynamic advantages, despite a permanent opening on its top side, and independent from the loading level. The main advantage of this solution is the enhanced aerodynamic efficiency during transport. The novel construction of the wagon functions simultaneously as a strengthening element for the wagon structure. It thereby enlarges the profile of the wagon and reduces its weight. Both aspects finally increase the vehicle’s load capacity. Moreover, the new wagon design protects fine-grained bulk cargo from drifting away, due to the even airstream at low transportation speeds.

Schematic view of the goods wagon

Anwendungsmöglichkeiten / Possible applications:
  • Goods traffic
  • Transportation
  • Railroad Industry
  • Logistics
Interested? Contact Us! Interested? Contact Us!
Show all techoffers Vorteile / Benefits:
  • Lighter wagon construction; higher vehicle load capacity
  • Improved aerodynamic behavior in non- or only partially loaded state
  • Lighter wagon construction reduces energy need for traction significantly
Entwicklungsstand / Development status:


Reifegrad / Maturity level:


Schlagworte / Tags:
Aerodynamics, energy efficiency, rail cargo, railway, vehicle design
Schutzrechte / Property rights:

DE, US, RU - granted; EP, CN, CA - pending

Patentinhaber / Patent holder:

Technische Universität Berlin; Havelländische Eisenbahn AG

Möglichkeiten der Zusammenarbeit / Possible cooperation:
  • R&D Cooperation
  • License
  • Patent Purchase

Ansprechpartnerin / Contact Person:
Ina Krüger

Tel.: 030 314-75916
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