Patent ID: 6907325

Claim:
A method for use in a vehicle requiring torque matching between a first power source and a second power source during a transition from the first power source solely providing torque to a combination of the first power source and the second power source providing torque, the method comprising: determining a first torque estimate for the first power source based on operating parameters for the first power source; determining a second torque estimate for the first power source based on operating parameters for the second power source; determining a steady-state operating condition of the vehicle; comparing the first torque estimate to the second torque estimate if the steady-state operating condition is determined; and calculating a torque correction factor based upon the comparison of the first torque estimate to the second torque estimate, wherein the correction factor is used to adjust the first torque estimate to control torque mismatching between the first power source and the second power source during the transition from the first power source solely providing torque to the combination of the first power source and the second power source providing torque.