Modeling research of city bus fuel consumption for different driving cycles

Abstract Simulation studies can be used to determine the fuel consumption and carbon dioxide emissions of city buses. The operating conditions such vehicles are characterised by a very high variability vehicle speed due large number stops along route bus. During testing, driving cycles replicate real-world achieve repeatable test conditions. Such cycle is profile represented as function time or distance. over an advantageous determinant, based on laboratory tests, for estimating pollutant research subject this paper was simulation bus under simulated urban traffic conditions, carried out means VECTO software. tool designed perform calculations vehicles. It enables model powertrain trucks buses carry simulations various routes defined cycles. object mega class bus, equipped with 225 kW engine. has three axles, including rear drive axle. scope included four cycles: urban, interurban, urbandelivery interurban. Each these analysed in terms road gradient. aim work study effect amount CO 2 emitted consumption. obtained results were analysed.