ADAPTIVE ENERGY MANAGEMENT CONTROLS FOR HYBRID POWERTRAIN

A hybrid vehicle includes a powertrain having an engine, an electric machine, and a disconnect clutch configured to selectively couple the engine and the electric machine. The vehicle further includes a controller programmed to, for a given operating point defined by a powertrain speed and a driver-demanded torque, command a torque split between the engine and the electric machine that depends on a duration of time of the powertrain having been at the given operating point in a previous drive cycle such that for consecutive drive cycles, as the durations of time decrease, torque commanded to the engine decreases and torque commanded to the electric machine increases.