Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector
One factor limiting the exploitation of hydrogen as a fuel in internal combustion engines is their tendency to autoignition. In fact, on one hand, its low activation energy facilitates autoignition even with low compression ratios; on the other hand, this can become uncontrollable, due, for instance...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/16/19/6823 |
| _version_ | 1797575938605580288 |
|---|---|
| author | Antonio Caricato Antonio Paolo Carlucci Magda Elvira Cassone Potenza Domenico Laforgia Marco Torresi Luciano Strafella |
| author_facet | Antonio Caricato Antonio Paolo Carlucci Magda Elvira Cassone Potenza Domenico Laforgia Marco Torresi Luciano Strafella |
| author_sort | Antonio Caricato |
| collection | DOAJ |
| description | One factor limiting the exploitation of hydrogen as a fuel in internal combustion engines is their tendency to autoignition. In fact, on one hand, its low activation energy facilitates autoignition even with low compression ratios; on the other hand, this can become uncontrollable, due, for instance, to the presence of hot spots in the combustion chamber or to the collision of hydrogen on close surfaces. This represents a limit to the use of hydrogen at medium–high loads, therefore limiting the power density of the engine. In this work, hydrogen was injected at a pressure ranging between 15 and 25 bars into a constant-volume combustion chamber in which the temperature and pressure were increased by means of a previous combustion event. The phenomena taking place after hydrogen injection were observed through fast image acquisition and characterized by measuring the chamber pressure and temperature. In particular, ignition sites were established. The physical system was also modeled in Ansys Fluent environment, and the injection and mixture formation were simulated in order to evaluate the thermo-fluid dynamic field inside the combustion chamber just before autoignition. |
| first_indexed | 2024-03-10T21:45:25Z |
| format | Article |
| id | doaj.art-1a656c8723264a45909649d72cbe07ae |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T21:45:25Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1a656c8723264a45909649d72cbe07ae2023-11-19T14:19:23ZengMDPI AGEnergies1996-10732023-09-011619682310.3390/en16196823Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty InjectorAntonio Caricato0Antonio Paolo Carlucci1Magda Elvira Cassone Potenza2Domenico Laforgia3Marco Torresi4Luciano Strafella5Department of Engineering for Innovation, University of Salento, Via per Arnesano, 73100 Lecce, ItalyDepartment of Engineering for Innovation, University of Salento, Via per Arnesano, 73100 Lecce, ItalyDepartment of Mechanical Engineering, Mathematics and Management (DMMM), Polytechnic University of Bari, Via Orabona 4, 70126 Bari, ItalyDepartment of Engineering for Innovation, University of Salento, Via per Arnesano, 73100 Lecce, ItalyDepartment of Mechanical Engineering, Mathematics and Management (DMMM), Polytechnic University of Bari, Via Orabona 4, 70126 Bari, ItalyDepartment of Engineering for Innovation, University of Salento, Via per Arnesano, 73100 Lecce, ItalyOne factor limiting the exploitation of hydrogen as a fuel in internal combustion engines is their tendency to autoignition. In fact, on one hand, its low activation energy facilitates autoignition even with low compression ratios; on the other hand, this can become uncontrollable, due, for instance, to the presence of hot spots in the combustion chamber or to the collision of hydrogen on close surfaces. This represents a limit to the use of hydrogen at medium–high loads, therefore limiting the power density of the engine. In this work, hydrogen was injected at a pressure ranging between 15 and 25 bars into a constant-volume combustion chamber in which the temperature and pressure were increased by means of a previous combustion event. The phenomena taking place after hydrogen injection were observed through fast image acquisition and characterized by measuring the chamber pressure and temperature. In particular, ignition sites were established. The physical system was also modeled in Ansys Fluent environment, and the injection and mixture formation were simulated in order to evaluate the thermo-fluid dynamic field inside the combustion chamber just before autoignition.https://www.mdpi.com/1996-1073/16/19/6823internal combustion engineshydrogeninjectorautoignitionsimulation modelingCFD simulations |
| spellingShingle | Antonio Caricato Antonio Paolo Carlucci Magda Elvira Cassone Potenza Domenico Laforgia Marco Torresi Luciano Strafella Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector Energies internal combustion engines hydrogen injector autoignition simulation modeling CFD simulations |
| title | Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector |
| title_full | Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector |
| title_fullStr | Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector |
| title_full_unstemmed | Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector |
| title_short | Autoignition Characterization of Hydrogen Directly Injected into a Constant-Volume Combustion Chamber through a Heavy-Duty Injector |
| title_sort | autoignition characterization of hydrogen directly injected into a constant volume combustion chamber through a heavy duty injector |
| topic | internal combustion engines hydrogen injector autoignition simulation modeling CFD simulations |
| url | https://www.mdpi.com/1996-1073/16/19/6823 |
| work_keys_str_mv | AT antoniocaricato autoignitioncharacterizationofhydrogendirectlyinjectedintoaconstantvolumecombustionchamberthroughaheavydutyinjector AT antoniopaolocarlucci autoignitioncharacterizationofhydrogendirectlyinjectedintoaconstantvolumecombustionchamberthroughaheavydutyinjector AT magdaelviracassonepotenza autoignitioncharacterizationofhydrogendirectlyinjectedintoaconstantvolumecombustionchamberthroughaheavydutyinjector AT domenicolaforgia autoignitioncharacterizationofhydrogendirectlyinjectedintoaconstantvolumecombustionchamberthroughaheavydutyinjector AT marcotorresi autoignitioncharacterizationofhydrogendirectlyinjectedintoaconstantvolumecombustionchamberthroughaheavydutyinjector AT lucianostrafella autoignitioncharacterizationofhydrogendirectlyinjectedintoaconstantvolumecombustionchamberthroughaheavydutyinjector |