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Modification of the powertrain unit on a rail vehicle and analysis of its running properties
Project: Cultural and Educational Grant Agency of the Ministry of Education of the Slovak Republic within the project KEGA 031ŽU-4/2023: Development of key competencies of the graduate of the study program Vehicles and Engines
Operational Program Integrated Infrastructure 2014 - 2020 of the project: Concept, safety and related industrial research for the replacement of diesel traction by hydrogen fuel cell traction in the railway vehicles series 861 (code ITMS2014+: 313011BVC2), co-financed by the European Regional Development Fund
EU NextGenerationEU through the Recovery and Resilience Plan for Slovakia under the project No. 09I03-03-V01-00131
Keywords: rail vehicle; powertrain unit; running properties; MBS modelling; simulation
Abstract
Nowadays, there is also a trend in rail transport to change to more environmentally friendly power cells. One such solution is the introduction of hydrogen fuel cells into the construction of rail vehicles. This paper studies the changes in the running properties of a modified rail vehicle and its components after replacing the standard diesel-electric powertrain unit with a new one using hydrogen fuel cells. This modification results in significant changes in the vehicle structure, especially in the mass and position of the centre of gravity of its various components. The running characteristics are analysed by simulation calculations using the commercial simulation software Simpack. A multibody simulation model consisting of rigid bodies connected by flexible force elements is used. This analysis is performed for both the original rail vehicle and the modified rail vehicle with hydrogen fuel cells. As a result, the modified rail vehicle with a hydrogen powertrain was found to have a similar force distribution in wheel/rail contact, but the axle load of this vehicle did not meet the criteria.
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