In this thesis work it has been studied the possibility of implementing an Exhaust Gas Recirculation (EGR) circuit on a modern, downsized, turbocharged spark igntion engine. The results are found using one-dimensional gas-dynamic numerical modelisation, thanks to the GasDyn program, a computational code developed in Politecnico di Milano that can simulate the functioning of an internal combustion engine in its whole components, so even all the ducts, valves and heat exchangers that are necessary to the engine’s work. The main goal of the work is to demonstrate that the application of the EGR on a spark ignition engine, facing the actual and future pollution normatives, is possible and can help reducing the noxious emissions, wich are more and more strictly as the years passes.
In questa tesi è stata studiata la possibilità di implementare un ricircolo dei gas di scarico (EGR) su un motore moderno, turbocompresso, alimentato a benzina. I risultati sono stati ricavati usando una modellizzazione numerica 1-D gasdinamica, grazie al programma GasDyn, il cui codice è stato sviluppato dal Politecnico di Milano. Lo scopo del lavoro è di dimostrare che l'applicazione di un EGR su un motore a benzina, a causa delle normative antiinquinamento sempre più stringenti, può rivelarsi utile nell'abbattimento di emissioni nocive.
1-D fluid dynamic simulation of IC engines with short and long EGR circuits
BELOTTI, GIANMARCO
2017/2018
Abstract
In this thesis work it has been studied the possibility of implementing an Exhaust Gas Recirculation (EGR) circuit on a modern, downsized, turbocharged spark igntion engine. The results are found using one-dimensional gas-dynamic numerical modelisation, thanks to the GasDyn program, a computational code developed in Politecnico di Milano that can simulate the functioning of an internal combustion engine in its whole components, so even all the ducts, valves and heat exchangers that are necessary to the engine’s work. The main goal of the work is to demonstrate that the application of the EGR on a spark ignition engine, facing the actual and future pollution normatives, is possible and can help reducing the noxious emissions, wich are more and more strictly as the years passes.File | Dimensione | Formato | |
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https://hdl.handle.net/10589/144190