Patent ID: 9091615
Filing Date: 2015-07-28
Classification: F02D,G01M

Abstract:
1. A monitoring method for a control device system having a plurality of electronic control devices for controlling an internal combustion engine in a motor vehicle, comprising: for each of a plurality of individual electronic control devices of the control device system, calculating both (a) an actual value of an operating variable of the internal combustion engine and (b) a nominal value of the operating variable of the internal combustion engine, such that a plurality of actual values of the operating variable and a plurality of nominal values of the operating variable are calculated, comparing, by the electronic control devices, the plurality of actual values of the operating variable to each other to determine a maximum actual value of the operating variable corresponding to any one of the individual electronic control devices, comparing, by the electronic control devices, the plurality of nominal values of the operating variable to each other to determine a minimum nominal value of the operating variable corresponding to any one of the individual electronic control devices, after determining the maximum actual value of the operating variable corresponding to any one of the individual electronic control devices and the minimum nominal value of the operating variable corresponding to any one of the individual electronic control devices, comparing the maximum actual value of the operating variable with the minimum nominal value of the operating variable; and detecting a malfunction in the control device system based on the results of the comparison of the maximum actual value of the operating variable with the minimum nominal value of the operating variable.