Abstract:

An important means of transport in urban agglomerations are buses. The article presents the results of simulation studies, the aim of which was to compare comparative energy consumption of short and long city buses in terms of assessing the needs for e-mobility. Currently, a number of e-mobility activities are observed, the largest of which has a dynamic change in the bus fleet structure and a significant, defined in subsequent years, increase in the percentage share of zero-emission buses (electric as well as hybrid and hydrogen). Decisions regarding the exchange of fleets should be preceded by proper analyzes, including the requirements and energy consumption of individual bus lines with the assumption of a certain number of passengers and the selection of a bus with proper capacity. The methodology for calculating energy consumption and determination of the required engine power presented in the article enables dedicated analyzes depending on driving profiles and specific bus parameters. Accurate and precise profiling of the routes of particular lines, taking into account the level of terrain, sections between stops and average staple speeds, will allow to increase the accuracy of calculations. Also results can be source of information for energy management strategy, as it was presented for fuel cell hybrid bus in paper. In addition, the presented calculations can also be the basis for determining fuel consumption and the emission volume of harmful compounds in the case of buses powered by an internal combustion engine.