Contribution
Evaluation of structure-borne and airborne noise in hydrogen-powered train engines
* Presenting author
Abstract:
This study investigates the acoustic characteristics of a hydrogen combustion engine, converted from diesel, as a potential solution for reducing emissions and noise pollution in rail systems. With the increasing demand for sustainable transportation, hydrogen is gaining traction as a cleaner fuel alternative. While hydrogen-powered vehicles have made significant progress, trains have been slower to adopt this technology. This study aims to contribute to the development of hydrogen-powered trains by comprehensively assessing their acoustic performance.The acoustic analysis will focus on both structure-borne and airborne noise, using parameters such as acceleration level and sound pressure level. The acceleration level is measured at three distinct engine bearings using three-dimensional acceleration sensors. To determine the sound power via the envelope surface method, a surrounding measurement surface is positioned at a fixed distance over the engine. The sound power is then calculated based on the overall sound pressure levels recorded at various points on the measurement surface. These measurements will aid in a thorough comparison of the acoustic behavior between the hydrogen engine and its diesel counterpart. The results are expected to offer valuable insights for the development of conversion strategies from diesel to hydrogen-powered engines.