The analysis of the injection of hydrogen-oxygen mixtures in gasoline-powered internal combustion engines

Calisesi, Federico (2018) The analysis of the injection of hydrogen-oxygen mixtures in gasoline-powered internal combustion engines. [Laurea magistrale], Università di Bologna, Corso di Studio in Ingegneria energetica [LM-DM270], Documento ad accesso riservato.
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The effects on combustion derived by the blending of hydrogen with traditional fuels adopted for internal combustion engines have been studied. Results derived by emission tests of a gasoline-fed vehicle equipped with a system for the production of hydrogen on-board have been analysed. The energy balance for the engine was evaluated. It demonstrated the increase of fuel consumptions to perform electrolysis process on-board the vehicle. Afterwards, numerical simulations based on a detailed kinetic model have been performed to calculate pollutant emissions produced by methane and iso-octane (which represents gasoline) compared with a mixture composed of 10% mol/mol by hydrogen. Chemical species studied were residual hydrocarbons, nitrous oxides and carbon monoxide. Notable variations of pollutant has not been calculated for methane, wherease iso-octane showed a reduction of the aforementioned pollutants when hydrogen was introduced. In the end operating costs have been analysed. The use of stored hydrogen produced by methane steam reforming found a reduction by 7% of costs, compared to the production via electrolysis.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Calisesi, Federico
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
hydrogen,internal combustion engines,automotive,emissions,pollutants,detailed kinetic model,fuel blending
Data di discussione della Tesi
16 Marzo 2018

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