Toward a framework for the hybrid control of a multi-mode hybrid-electric driveline

A supervisory control strategy is designed to address fuel minimization, battery state-of-charge control and drivability issues for a power-split, hybrid-electric vehicle. The energy management strategy relies solely on the current vehicle conditions and it does not require knowledge of the entire driving cycle a priori. While the state-of-charge control is largely integrated into the energy optimization strategy, the drivability control is treated separately but in such a way that the instantaneous power demand requested by the driver is still satisfied. The energy management strategy is tested on a quasi-static simulation model of the Ohio State University Challenge-X competition vehicle (a hybridized version of the GM Equinox). Simulation results show a remarkable improvement in fuel savings over the non-hybrid base vehicle