Patent ID: 8504261

Claim:
A control system comprising: an engine control module; and a transmission control module that communicates with the engine control module via a network, generates a back torque signal and a first engine acceleration signal, and transmits the back torque signal and the first engine acceleration signal to the engine control module via the network, wherein the transmission control module comprises a hydrodynamic torque module that determines a hydrodynamic torque of a torque converter, a torque converter module that determines a torque converter clutch torque of the torque converter, a pump torque module that determine a pump torque of a transmission, and a back torque module that generates the back torque signal based on the hydrodynamic torque, the torque converter clutch torque, and the pump torque, and wherein the engine control module controls operation of an engine based on the back torque signal and the first engine acceleration signal.