Patent ID: 7713115

Claim:
A process for controlling in a combine harvester one or more operating condition parameters of working parts including a threshing device, a separating unit associated with said threshing device, at least one cleaning unit including cleaning parts, and at least one tailings unit for working connection of the at least one cleaning unit with the threshing device, the process comprising the steps of assigning to the at least one tailings unit a first sensing device located rearwardly of the at least one tailing unit and a second sensing device located forwardly of the at least one tailing unit for monitoring a crop tailings stream; generating by the first sensing device a grain tailings signal which is a measure of tailings grain fraction in the crop tailings stream and generating by the second sensing device a tailings flow rate signal which is a measure of tailings flow rate of the crop tailings stream; and controlling said one or more operating parameters of at least one of the working parts as a function of the thusly generated grain tailings signal and tailings flow rate signal.