Energy Efficient Wagon Construction
Patent 12014/TUB

This new type of freight car can be used in freight transport, transport, the railway industry or logistics and is more energy-efficient than conventional models due to its aerodynamically advantageous design, for example.

  1. Lighter wagon construction; higher vehicle load capacity
  2. Improved aerodynamic behavior in non- or only partially loaded state
  3. Lighter wagon construction reduces energy need for traction significantly
Possible Applications

Goods traffic, Transportation, Railroad Industry, Logistics


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 airstream even at low transportation speeds.

Contact Us

Ina Krüger

Technology Transfer Manager

+49 (0)30 314-75916

Technology Readiness Level

Technology validated in lab

Property Rights

approved: CA, CN, DE, FR, GB, RU, US

Patent Holder

Technische Universität Berlin

Possible Cooperation
  • Licensing
  • Patent Purchase
  • R&D Cooperation