Quieter rail: FOEN and VTG research new technologies for freight wagons
Hamburg, 17. September 2019
Together for quieter rail freight transport: The Swiss Federal Office for the Environment (FOEN) and VTG are testing technologies to reduce noise emissions as part of the "Overall Optimized Freight Car" project. The project was commissioned in December 2017, and since then the design and engineering as well as the procurement and construction of the prototypes have been carried out in two stages. The project is now entering its third and final phase. The test runs have started in the canton of Berne in Switzerland and are scheduled to be completed by November 2019.
Optimized carriage design for noise reduction
Specifically, the project has several objectives: to minimize noise emission and transmission within the wagon, to reduce vehicle weight and life cycle costs, and to improve wagon productivity and logistics capability. Various components were installed on the wagon, including an optimized bogie with weight-optimised brake calipers and radially adjustable wheel sets. The friction damping common for bogies was replaced by a hydraulic one. The wheelsets are equipped with ring elements and a coating for noise reduction. Changes have also been made to the car itself: Sound insulation aprons and sensors were used to monitor brakes and bearings, and the open truss structure above the wheelsets was closed.
The findings from the "Innovative Freight Car" project of the German Federal Ministry of Transport and Digital Infrastructure, in which VTG and DB Cargo jointly researched quieter, more economical and more energy-efficient cars, were also incorporated into the development. Both projects will be accompanied by TÜV Rheinland.