Engine Speed Control and Battery Power Scheduling Strategy for an Engine in a Hybrid Electric Vehicle Powertrain

摘要

A control method and system is disclosed for regulating speed of an engine in a hybrid electric vehicle powertrain that includes an electric motor and gearing. An electrical power flow path and a mechanical power flow path are established. Electrical power is coordinated with mechanical power to effect an arbitrated engine speed for a given power demand that will result in an acceptable powertrain efficiency.