Patent ID: 8527120
Filing Date: 2013-09-03
Classification: B60K,B60L,B60W,F02D,F16H,Y02T

Abstract:
1. Method for controlling a powertrain comprising an electro-mechanical transmission, an internal combustion engine and an electric machine, the engine providing an engine input torque to the transmission and the electric machine providing an electric machine input torque to the transmission, the transmission providing an output torque comprising the engine and electric machine input torques, the method comprising: operating the engine substantially at wide open throttle; monitoring an output torque request; controlling the engine input torque employing an engine control module by controlling a valve overlap setting for a cylinder of the engine based upon the output torque request wherein controlling the valve overlap setting for the cylinder modulates a residual burnt gas fraction within the cylinder utilizing at least one of controlling the electric machine input torque based upon the output torque request and a time-lag difference between the output torque request and the controlled engine input torque.