Patent ID: 8825284

Claim:
A method, comprising: providing a system comprising a vehicle, a vehicle controller configured to control one or more aspects of operation of the vehicle, an engine, an engine controller configured to control one or more aspects of operation of the engine, and a communication link operatively coupled with the vehicle controller and operatively coupled with the engine controller; operating the engine controller to request first vehicle identifying information from the vehicle controller; if said first vehicle identifying information is received by the engine controller, operating the engine controller to select a fan torque curve based upon said first information, estimate a fan torque based upon the fan torque curve, adjust a friction torque of the engine based upon the estimated fan torque, and transmit adjusted friction torque information over the communication link; if said first information is not received by the engine controller, operating the engine controller to read second vehicle identifying information from an electronic data plate of the engine controller; if said second vehicle identifying information is read by the engine controller, operating the engine controller to select a fan torque curve based upon said second information, estimate a fan torque based upon the fan torque curve, adjust a friction torque of the engine based upon the estimated fan torque, and transmit adjusted friction torque information over the communication link; and if said second vehicle identifying information is not read by the engine controller, operating the engine controller to select a generic fan torque curve, estimate a fan torque based upon the generic fan torque curve, adjust a friction torque of the engine based upon the estimated fan torque, and transmit adjusted friction torque information over the communication link.