An adaptive fuel strategy for a hybrid vehicle

摘要

A method and system to mature/update adaptive fuel tables for a hybrid vehicle, comprising a controller operable: to determine whether an adaptive fuel table is not mature; to determine, using arbitration logic (fig 2), whether an adaptive fuel strategy is allowed to mature the adaptive fuel table; to cause the engine throttle to sweep though different airflow regions of the engine; to collect fuel shift data from engine sensors during the throttle sweep until the strategy orders data collection to stop; and to update the fuel shift data from the engine throttle sweep. Preferably a generator attached to the vehicle drive train, adds or subtracts torque to maintain constant engine speed during the throttle sweeps.