Patent ID: 8336523

Claim:
A method of determining an optimized limp-home function for an engine of a motor vehicle, the engine including a device configured to limit, at least one of a torque and a rotational speed of the engine in the event of at least one fault symptom, the method comprising: determining, based on actual values of at least one of appropriate vehicle-data, engine data, and a previous trend thereof, an actual driving state of the motor vehicle, determining, for the determined actual driving state of the motor vehicle, a classification of criticality associated with a supposed, but not implemented, decrease or limitation of torque or rotational speed of the engine, detecting a fault symptom of the engine or a vehicle device, determining, for the detected fault symptom of the engine or vehicle device, a classification of risk of damage that would occur to the engine or vehicle device at a supposed, but not implemented, high torque or high rotational speed of the engine, and determining an optimized limp-home function based at least on the determined classifications of criticality and risk.