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Publikacje Pracowników Politechniki Lubelskiej
MNiSW
80
Poziom I
Status:
Warianty tytułu:
Conversion of fuel chemical energy into electrical energy in city bus with diesel engine
Autorzy: Grabowski Łukasz
Dyscypliny:
Aby zobaczyć szczegóły należy się zalogować.
Rok wydania: 2023
Serie:
Monografie - Politechnika Lubelska
Wersja dokumentu: Drukowana | Elektroniczna
Język: polski
Liczba stron: 206
Miejsce wydania: Lublin
Wydawnictwo: Wydawnictwo Politechniki Lubelskiej
Efekt badań statutowych NIE
Materiał konferencyjny: NIE
Publikacja OA: TAK
Licencja:
Sposób udostępnienia: Witryna wydawcy
Wersja tekstu: Ostateczna wersja opublikowana
Czas opublikowania: W momencie opublikowania
Data opublikowania w OA: 20 kwietnia 2023
Abstrakty: angielski | angielski
R&D activities to improve vehicle energy efficiency are triggered, e.g. by the introduced restrictions for carbon dioxide emissions. By 2030, this kind of emissions is going to be reduced by 40% compared to the 1990 emissions level. Energy efficiency also involves the process of converting fuel energy into electricity. This is especially true for urban buses whose electricity consumption is highest among all vehicles with internal combustion engines. The present methods to determine the efficiency of on-board electricity generation refer to engine and alternator efficiency characteristics but ignore all the factors that impact this process and result from vehicle's operating conditions. This study focuses on determining the efficiency of on-board electricity generation, including how this process is impacted by vehicle’s operating conditions, changes in load on the internal combustion engine and changes in electrical load on the alternator. This paper describes a series of experiments to investigate the conversions of fuel energy into mechanical energy in a compression-ignition internal combustion engine, mechanical energy into electrical energy in an alternator, fuel energy into electrical energy under steady-state conditions on a chassis dynamometer, and fuel energy into electrical energy under operating conditions. The analyses of the results explained how changes in the load of the engine and alternator over time affect the instantaneous and total efficiency of the conversion of fuel energy into electricity. The average value of efficiency under operating conditions was about 30%. The experimental studies were identification studies whose results were applied to create a model of an urban bus in the Vecto software. The calculations based on the model showed that vehicle’s weight and changes in road slopes also significantly affect the process of on-board electricity production in urban buses.
R&D activities to improve vehicle energy efficiency are triggered, e.g. by the introduced restrictions for carbon dioxide emissions. By 2030, this kind of emissions is going to be reduced by 40% compared to the 1990 emissions level. Energy efficiency also involves the process of converting fuel energy into electricity. This is especially true for urban buses whose electricity consumption is highest among all vehicles with internal combustion engines. The present methods to determine the efficiency of on-board electricity generation refer to engine and alternator efficiency characteristics but ignore all the factors that impact this process and result from vehicle's operating conditions. This study focuses on determining the efficiency of on-board electricity generation, including how this process is impacted by vehicle’s operating conditions, changes in load on the internal combustion engine and changes in electrical load on the alternator. This paper describes a series of experiments to investigate the conversions of fuel energy into mechanical energy in a compression-ignition internal combustion engine, mechanical energy into electrical energy in an alternator, fuel energy into electrical energy under steady-state conditions on a chassis dynamometer, and fuel energy into electrical energy under operating conditions. The analyses of the results explained how changes in the load of the engine and alternator over time affect the instantaneous and total efficiency of the conversion of fuel energy into electricity. The average value of efficiency under operating conditions was about 30%. The experimental studies were identification studies whose results were applied to create a model of an urban bus in the Vecto software. The calculations based on the model showed that vehicle’s weight and changes in road slopes also significantly affect the process of on-board electricity production in urban buses.