Energy management in a parallel hybrid electric vehicle with a continuously variable transmission

This paper describes a control strategy for the energy management of a post-transmission parallel hybrid electric vehicle equipped with a continuously variable transmission (CVT). Results are presented highlighting the dynamic behavior of the model, as well as the fuel consumption normalized to a base case. A dynamic, forward simulation of a complete compact class vehicle including driver model and computer controller was written in Matlab/Simulink. The modeled vehicle components include: internal combustion engine, engine clutch, CVT, electric motor, lead-acid battery, vehicle driveline, hydraulic brakes, and the vehicle and tire dynamics.