Patent ID: 7660710

Claim:
A computer implemented method of determining a driveline inertia of a vehicle driveline resulting from an oscillatory speed effect in a vehicle driveline configuration, the driveline including a driveline component rotationally coupled to a propshaft at a non-zero working angle using a universal joint, the method comprising: entering measurements of the vehicle driveline configuration into a graphical user interface program, wherein the entered measurements of the driveline configuration includes measurements indicative of working angle between the propshaft and the driveline component; determining an oscillatory speed effect of the vehicle driveline component based on the entered measurements; determining a driveline inertia resulting from an oscillatory speed effect of the vehicle driveline by using, at least in part, the rotational speed of the driveline component, the working angle between the driveline component and the propshaft, the inertia of the driveline component, and the inertia of the propshaft; and providing an output indicative of the driveline inertia in a tangible medium.