New service jet from Stadler for ÖBB: Dynamic tests and instrumented wheelsets

ÖBB-Infrastruktur AG has procured a new fleet of rescue trains with 18 new service jets from Stadler. The low-emission and multifunctional vehicles will be in operation throughout Austria, travelling at speeds of up to 160 km/h. PJM was commissioned as an accredited test center in accordance with ISO/IEC 17025 for the test runs. The dynamic tests are being carried out in co-operation with the ÖBB mechanical measurement group. PJM was also responsible for the production and development of the instrumented wheelsets. The vehicle tests for the areas of running behavior, brakes, acoustics and pantographs will take place throughout Austria and are expected to be completed in autumn 2024. For unrestricted track access in Austria, the test runs were carried out in test zone 5c, for vehicle authorization for radius curves down to 100 meters. "The instrumented wheelsets were specially developed and manufactured for these specifications in very tight curves. Our wheelsets have proven themselves in the dynamic tests," says Martin Joch, CEO of PJ Messtechnik GmbH.

The new generation of service jets required some innovations in the test runs. "Due to the new standards, these demanding tests were carried out on the ÖBB network for the first time. The results of the test runs are extremely precise and reliable and form a solid basis for evaluating the rail vehicle," says test manager Roman Schmid, ÖBB Produktion GmbH.

Video dynamic tests

Media release

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Nightjets of ÖBB: Measuring wheel sets and approval tests

In future, a total of 33 Nightjets of the new Viaggio Next Level generation from Siemens Mobility will ensure comfortable and at the same time climate-friendly travel in Central Europe. For the approval of the newly developed passenger coaches, PJM is on board as an accredited test center according to ISO/IEC 17025. The Austrian system specialist was commissioned for the overall approval in cooperation with ÖBB. The contract specifically includes the instrumented wheel sets as well as the approval tests in the areas of running behavior, fatigue strength, acoustics and aerodynamics.

6 instrumented wheel sets were developed and manufactured in Graz and then installed in the test vehicle at the ÖBB plant in Vienna. The test runs started in autumn 2021. The test train is in use throughout the entire Austrian rail network. To evaluate derailment safety, the first approval tests started in the field of running behavior, after which the bogies were upgraded for the test runs in the area fatigue strength. Finally, high-speed measurements follow for the aerodynamics area. The acoustic tests will complete the approval tests. "For an extensive project like this, it is above all our metrology expertise and experience in bringing together all specialist areas that prove their worth. Our flexibility and routine, which we have gained from our numerous international projects, are also essential. Due to the weather, there are always changes in procedures, for example during test runs in winter on the Arlberg at 1,000 m above sea level," explains Martin Joch, CEO of PJM. "A good collaboration with the project partners is also immensely important in large-scale projects. The cooperation with ÖBB's measurement group is excellent."

Get more in the media release:

https://pjm.co.at/en/wp-content/uploads/sites/2/2022/10/10-2022-Presse-Info-Nightjets-PJM-Web2-EN.pdf

 

 

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