Patent ID: 6242873
Filing Date: 2001-06-05
Classification: B60K,B60L,B60W,Y02T

Abstract:
A method for controlling a hybrid vehicle having an auxiliary power unit, at least one energy storage device, at least one electric drive motor for traction, and a controller with associated memory comprising the steps of:acquiring data for the current vehicle operating state for a variable control interval;storing the vehicle operating state data as measured operating state variables;generating simulated vehicle operating state data by inputting the measured vehicle operating state variables into a simulation model running on-board in the controller memory;periodically validating the simulation model for the control interval by comparing simulated vehicle response data generated by the simulation model with corresponding measured operating state variables;analysing the measured operating state data to predict the vehicle operating state for the next control interval;generating a control scheme for optimizing energy management of the auxiliary power unit, the at least one energy storage device and the at least one electric drive motor for the predicted operating state by running the simulation model trough various iterations and monitoring the simulated vehicle response data to select the optimal control scheme for the next control interval; andcontrolling the auxiliary power unit, the at least one energy storage device and the at least one electric drive motor through the controller according to the optimal control scheme for the next control interval.