Riassunto analitico
Reciprocating Internal Combustion (IC) engines are heavily utilized for transportation, commerce, and power generation. On the world’s roads, there are more than 1.2 billion vehicles and in 2020 they were produced approximately 78 million passenger cars. This is why engine research is still playing an important role nowadays and in the next future to increase engine efficiency, decrease pollutant emissions, and find new and cheaper solutions. Combined numerical and experimental data can give a wide-ranging vision into the evolution of in-cylinder phenomena while 3D CFD analysis gained so much importance during the last years and it can provide insight into specific phenomena. Optically accessible engines are a new solution to study ICE since they allow a complete view of what happens inside the combustion chamber and they provide data with high temporal and spatial resolution. However, due to their material, they bring several issues which need to be considered and require different models in the CFD analysis concerning a traditional ICE. This thesis aims to characterise a spark ignited optically accessible engine placed in the CNR-STEM of Napoli, using Iso-octane as a fuel.
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