20.500.12556/RUL-186174 Analiza izpustov onesnažil mestnega avtobusa skladno s standardoma Euro VI in Euro 7 Analysis of urban bus pollutant emissions based on Euro VI and Euro 7 standards V zaključni nalogi je obravnavano vrednotenje izpustov plinastih onesnažil mestnega avtobusa pri dejanski vožnji skladno z evropskima emisijskima standardoma Euro VI in Euro 7. Predstavljeni so aktualni trendi na področju prometa in izpustov onesnažil. Opisana je metodologija izračuna izpustov onesnažil po standardih Euro VI in Euro 7 ter dopolnilnih dokumentih. Na podlagi meritev je bilo izdelano namensko orodje v programskem okolju Python za izračun faktorjev skladnosti in specifičnih izpustov onesnažil NOx, CO in THC po metodah na podlagi dela in na podlagi mase CO2. Rezultati kažejo, da sta metodi izračuna dobro primerljivi. Ugotovljeno je bilo, da na izpuste onesnažil vplivajo tudi lastnosti voznega cikla, kot sta ogretost motorja in vozna dinamika. Rezultati po standardu Euro VI mejnih vrednosti ne presegajo in pri obravnavanih onesnažilih potrjujejo skladnost vozila s standardom. Večina rezultatov po standardu Euro 7 je ne glede na v tej nalogi obravnavano onesnažilo presegla predpisane mejne vrednosti, kar je pričakovano glede na zaostrene mejne vrednosti. Zaradi omejenega števila meritev in njihove izvedbe, ki ni v skladu s standardom, pa ni mogoče podati trdnih sklepov o skladnosti vozila s prihajajočim standardom. This thesis presents an evaluation of gaseous pollutant emissions from an urban bus under real-world driving conditions in accordance with the European Euro VI and Euro 7 emission standards. Current trends in the transport sector and pollutant emissions are reviewed. The methodologies for calculating pollutant emissions according to the Euro VI and Euro 7 standards and their accompanying regulatory documents are described. Based on measurement data, a dedicated software tool was developed in the Python programming environment to calculate conformity factors and specific emissions of NOₓ, CO, and THC using both the work-based and CO₂ mass-based methods. The results indicate that the two calculation methods are in good agreement. It was also found that pollutant emissions are influenced by driving cycle characteristics, particularly engine warm-up conditions and driving dynamics. The results evaluated according to the Euro VI standard remain below the prescribed emission limits and, for the pollutants considered, confirm the vehicle's compliance with the standard. In contrast, most of the results obtained according to the Euro 7 standard exceeded the prescribed emission limits regardless of the pollutant considered in this study, which is expected given the more stringent limit values. However, due to the limited number of measurements and the fact that the tests were not conducted fully in accordance with the requirements of the standard, no definitive conclusions can be drawn regarding the vehicle's compliance with the upcoming Euro 7 standard. izpusti onesnažil promet Euro VI Euro 7 avtobus pollutant emissions transportation Euro VI Euro 7 city bus true false false [J. Česen] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-08-28 08:30:35 2026-08-28 08:30:47 2026-08-29 04:40:29 0000-00-00 00:00:00 2026 0 Ljubljana 0 XIV, 54 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 656.132:614.715(043.2) 288503 289277955 48805.pdf 48805.pdf 1 9FFECB057D6E14CF5FAE64B071ABA05C 9455be5b8651b1644f6205fbd8e5f453f5872ee239e585eba8b486a8671c8592 960a0be2-a2a9-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245286 Fakulteta za strojništvo 0 0 0