Validation of Bus Specific Powertrain Components in STARS

The possibilities to simulate fuel consumption and optimize a vehicle’s powertrain to fit to the customer’s needs are great strengths in the competitive bus industry where fuel consumption is one of the main sales arguments. In this master’s thesis, bus specific powertrain component models, used to simulate and predict fuel consumption, are validated using measured data collected from buses. Additionally, a sensitivity analysis is made where it is investigated how errors in the powertrain parameters affect fuel consumption. After model improvements it is concluded that the library components can be used to predict fuel consumption well. During the work, possible model uncertainties which affect fuel consumption are identified. Hence, this study may serve as foundation for further investigation of these uncertainties.