20.500.12556/RUL-106465 Real-world fuel consumption, fuel cost and exhaust emissions of different bus powertrain technologies Air quality in urban areas is strongly influenced by exhaust emitted by the public transport fleet. The aim of this study was to analyze benefits in the fuel consumption, fuel costs and exhaust emissions when replacing baseline diesel fueled EURO III city buses by the compressed natural gas (CNG)-fueled EURO V buses and by hydraulic series hybrid diesel-fueled EURO V buses. Real-world measurements were performed on the regular bus route to access realistic energy consumption and exhaust emissions. Instantaneous gaseous emission (CO$_2$, CO, NO$_x$ and THC) were measured together with the instantaneous PM$_{10}$ mass emission. Innovativeness of the presented approach thus arises from the systematic comparison of different powertrain technologies under real-world drive cycles and measuring time traces of not only gaseous but also of PM$_{10}$ mass emissions. Furthermore, lumped cycle averaged emissions are interpreted and explained by typical powertrain performance parameters and exhaust emission time traces. Cumulative results indicate that application of the CNG fueled buses does not necessary reduce CO$_2$ emissions compared to diesel-fueled buses whereas reduction in fuel costs is evident. Additionally, it is shown that hybrid operation of the hydraulic series hybrid diesel-fueled bus resulted in higher fuel consumption due to poorly optimized hybrid topology and control strategy. Furthermore, analyses of the time traces point out inadequate lambda control of CNG-fueled buses and nucleation mode-based particle number emissions during deceleration. bus powertrain technologies instantaneous gaseous and PM$_{10}$ mass emissions real-world driving cycles tehnologije avtobusnih pogonskih sklopov trenutni plinski in PM$_{10}$ izpusti vozni cikel v realnem svetu true false true Angleški jezik Slovenski jezik Članek v reviji 2019-02-25 14:54:24 2019-02-25 14:54:27 2022-08-19 03:46:01 0000-00-00 00:00:00 2018 0 0 20 str. iss. 8, art. 2160 Vol. 11 2018 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.43(045) 1996-1073 10.3390/en11082160 16192027 518046745 RAZ_Rodman_Opresnik_Samuel_2018.pdf RAZ_Rodman_Opresnik_Samuel_2018.pdf 1 EF9E0FFA62C5833EC4DF86B9A4D67901 7556bdbdf024feb78e253c78dfe3d40844fbf1b39b667adefd11281cb189ed87 36ccafe5-21dc-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=149009 http://www.mdpi.com/1996-1073/11/8/2160 0 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=117238 Fakulteta za strojništvo 0 0 0