Patent ID: 7360615
Filing Date: 2008-04-22
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A method for providing power commands for a hybrid electric vehicle, said hybrid electric vehicle including an engine, at least one electric motor and a battery, said method comprising; providing a plurality of vehicle inputs of vehicle operation and vehicle environment, said plurality of vehicle inputs including time and day information; forecasting a driving cycle profile for each sample of a series of N samples based on the vehicle inputs, wherein forecasting a driving cycle profile includes using driving history including the time and day information and a travel destination; determining a sequence of driver power demands for each sample of a series of the N samples based on the plurality of vehicle inputs and the travel destination; determining an optimum sequence of power commands for the at least one electric motor and the engine for the series of samples, wherein determining an optimum sequence of power commands includes using a plurality of constraint equations to minimize a total predicted fuel economy, wherein using a plurality of constraint equations includes employing a separate constraint equation for all of a difference between an initial and end of horizon state of battery charge, a battery charge power limit, a battery discharge power limit, a battery state of charge less than a maximum limit, a battery state of charge greater than a minimum limit, motor output power, engine performance and total emissions; and selecting a current one of the power commands to operate the at least one electric motor and the engine.