Predictive energy management control scheme for a vehicle including a hybrid powertrain system

摘要

A method for controlling a vehicle having a hybrid powertrain includes monitoring vehicle navigation and traffic patterns associated with a predicted travel path. It extends the powertrain instantaneous controller into a predictive control framework, and utilizes previewed traffic and geographic information based on on-board sensing and navigation information. An impending road load is predicted from which a fuel cost factor is optimized under a model predictive control framework. A state-of-charge trajectory is predicted from the impending road load and operation of the hybrid powertrain system is controlled in response thereto.

主权项

1. Method for operating a vehicle including a hybrid powertrain system comprising an internal combustion engine operatively coupled to an input member of a hybrid transmission including a torque machine operative to exchange power with an energy storage device, the hybrid transmission configured to transfer torque among the input member, the torque machine and an output member, the method comprising:
monitoring vehicle navigation and traffic patterns associated with a predicted travel path for the vehicle; periodically predicting an impending road load associated with the vehicle navigation and traffic patterns; estimating vehicle propulsion power associated with the predicted impending road load; determining a desired state-of-charge trajectory for the energy storage device; predicting a state-of-charge trajectory for the energy storage device corresponding to the estimated vehicle propulsion power and the desired state-of-charge trajectory for the energy storage device; and controlling with a control module operation of the hybrid powertrain system in response to the predicted state-of-charge trajectory for the energy storage device comprising determining a preferred power split between a power output from the engine and a power output from the torque machine, the preferred power split based upon the state-of-charge trajectory for the energy storage device.