Application of the Equivalent Consumption Minimization Strategy to the energy management of a heavy-duty Hybrid Electric Vehicle

The present thesis aims at evaluating the performance of a real-time implementable onboard energy management strategy (EMS) for Hybrid Electric Vehicles (HEVs), namely Equivalent Consumption Minimization Strategy (ECMS). A full hybrid heavy-duty vehicle with a 4,5L compression ignition engine has been chosen as reference vehicle. A P2 parallel hybrid architecture, with the electric machine located between the engine and the gearbox, has been simulated by means of a design optimization tool developed in MATLAB programming environment. The ECMS control strategy has first been implemented in the simulation tool following a detailed Equivalence Factors (EFs) calibration, then it has been tested on different driving scenarios and finally it has been compared with the Dynamic Programming (DP) global optimizer. Also, an ICE downsizing has been advanced, to furtherly reduce fuel consumption.