Patent ID: 9126587
Filing Date: 2015-09-08
Classification: B60W

Abstract:
1. A vehicle comprising: a vehicle system controller in communication with a transmission control unit that controls an electric motor and an engine control unit that controls an engine, the engine control unit having a maximum torque output value and a torque increase delay response function that spans a predetermined time period; a transmission that selectively receives torque from one or both of the engine and the motor; the vehicle system controller configured to: receive a torque request signal requesting an increase in torque from an acceleration control member, the torque request signal exceeding the torque increase delay response function of the engine control unit during a first period of time and exceeding the maximum torque output value of the engine control unit during a second period of time and a third period of time; generate a motor torque boost signal requesting an increase in torque from the electric motor; adjust the motor torque boost signal to a motor torque value required to compensate for the torque increase delay response function to meet the torque request signal during the first period of time; reduce the motor torque boost signal during the second period of time, after the first period of time once the engine has reached the maximum torque output value, such that a combined engine and electric motor torque meets the torque request signal, wherein the engine maintains the maximum torque output value and the motor maintains a first substantially constant torque value during the second period of time; and further reduce the motor torque boost signal during the third period of time, after the second period of time to preserve battery charge, such that the combined engine and electric motor torque is less than the torque request signal, wherein the engine maintains the maximum torque output value and the motor maintains a second substantially constant torque value during the third period of time.