Patent ID: 7739016
Filing Date: 2010-06-15
Classification: B60K,B60W,F16H,Y02T

Abstract:
1. Method to estimate a control parameter for a powertrain system, the powertrain system comprising a plurality of torque-generative devices operably connected to a transmission device having a torque output to a driveline, comprising: establishing a plurality of equations operable to estimate the control parameter and a plurality of operating parameters based upon a plurality of torque inputs, said plurality of operating parameters comprising operating speeds of the powertrain system and driveline, said plurality of torque inputs comprising at least one of torque outputs of each of the torque-generative devices, transmission clutch torques, brake torque, road load torque, and accessory torque; determining the operating parameters that comprise operating speeds of the powertrain system and driveline; and adjusting coefficients of the plurality of equations based upon the operating speeds of the powertrain system; wherein said transmission clutch torques are estimated by