Selected parameters of the combustion process in a compression-ignition engine at different angles of the beginning of injection of mixtures of rapeseed oil with n-hexane
Artykuł w czasopiśmie
MNiSW
0
brak dyscyplin
| Status: | |
| Autorzy: | Longwic Rafał, Kuszneruk Michał, Tatarynow Dawid Jarosław |
| Dyscypliny: | |
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| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Strony: | 1 - 6 |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 10 grudnia 2025 |
| Abstrakty: | angielski |
| The article presents the results of experiments in which a compression-ignition engine was fueled with a mixture of rapeseed oil with a 10% addition of n-hexane. The effect of changing the fuel injection start angle on selected indicators of the combustion process was evaluated. The tests were conducted at a fixed vehicle speed of 90 km/h. The addition of n-hexane made it possible to improve the characteristics of the combustion process of rapeseed oil. The maximum combustion pressure increased to 9.5 MPa (ON: 9.66 MPa; OR: 8.71 MPa), and the ignition delay was shortened. Advancing the pilot injection by - 6° CA resulted in stabilization of the kinetic combustion phase; in reality, due to map interpolations and auto-adaptation strategies of the controller, the offset was approx. - 4° CA, indicating that it must be taken into account in the interpretation of the results. The average indexed pressure reached 0.805 MPa (ON: 0.813 MPa; OR: 0.728 MPa), and the maximum pressure build-up rate (dp/dα) reached 0.375 MPa/°CA, approaching the 0.399 MPa/°CA recorded for ON. The rate of heat release was in the range of 86-93 kJ/m³-°CA, clearly lower than that of OR (130 kJ/m³-°CA). The results confirm that appropriate modification of the fuel composition, together with a properly selected injection angle, allows compression-ignition engines to burn renewable fuels. The results of the measurements were described with regression relationships, which allows their use in further simulation and development work. |
