Abstract
Current and future engine emission regulations and the imminent need to decarbonize energy systems drive the development of future engine applications, capable of running on renewable fuels with efficient combustion mechanisms. In order to accomplish an optimized performance of future engines, predictive three-dimensional CFD simulations of the phenomena inside the combustion chamber provide a powerful and efficient tool to gain detailed insight into the characteristics of spray formation, mixture and ignition/combustion processes. The presented work demonstrates the application of a developed model implemented into a commercial CFD code to model ignition and combustion for pilot ignited dual fuel engine applications. Validation with experimental data from an optically accessible test rig allows the comparison of the simulation for mixture formation, ignition and combustion behaviour at engine relevant conditions. Excellent agreement between simulation and experiment was found for the application of pilot ignition of natural gas by micro n-dodecane sprays. Furthermore, the demonstration of the simulation of pilot ignition of ammonia is presented to showcase the flexibility of the developed numerical approach wrt. Fuel types, injection and engine parameters for the application in internal combustion engines.
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Acknowledgments
The presented work was conducted in the scope of the research project CREDO (Carbon REduced Dual-fuel cOmbustion), with financial support from the Swiss Federal Office of Energy (BFE) and WinGD. We would like to extend our gratitude also to Jan Hegi (Masterthesis student at combustion and flow solutions GmbH at the time) and our project partners at the University of Applied Sciences and Arts Northwestern Switzerland (FHNW) School of Engineering Institute of Thermal and Fluid Engineering (ITFE) who conducted all the experiments on the test rig and provided all crucial data needed.
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© 2023 Der/die Autor(en), exklusiv lizenziert an Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature
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Schlatter, S., Lämmle, C. (2023). Pilot Ignition in Future Fuels in Engine Systems. In: Kulzer, A.C., Reuss, HC., Wagner, A. (eds) 23. Internationales Stuttgarter Symposium. ISSYM 2023. Proceedings. Springer Vieweg, Wiesbaden. https://doi.org/10.1007/978-3-658-42048-2_25
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DOI: https://doi.org/10.1007/978-3-658-42048-2_25
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