Method for calculating the remaining term of a component of an internal combustion engine, and control device and internal combustion engine therefor

摘要

Method (100) for operating an internal combustion engine (260, 420) with a motor, comprising a movable machine part and at least one machine element that is subject to wear and tear, namely a machine element that is subject to wear and tear during operation, which limits the running time due to wear and tear for the operation of the internal combustion engine (260, 420), wherein - for the operation of the internal combustion engine (260, 420) a time interval is specified which limits the running time until the next maintenance of the internal combustion engine (260, 420), and - the internal combustion engine a number Has runtime-limiting machine elements (262), with a residual runtime being predicted for the at least one runtime-limiting machine element (262) and the time-limiting time interval being determined therefrom, characterized in that the method further comprises the steps: - Identifying at least one s the remaining running time of the machine element (262) which limits the running time, tribologically determining wear parameter (Y) for the wear of the machine element, - assigning a number (k) of operating conditions (225) of the internal combustion engine to parameter values (X_k) relating to the wear (Y) of the Machine element (262) limiting the running time are in an operational context, - regressive determination of a functional dependency (250) between the number (k) of operating conditions (X) on the one hand and the wear parameter (Y) on the other hand, the regressive determination of the functional dependency (250) is based on: (i) predetermined operation of a number (n) of test internal combustion engines (210), each having a test machine element (220), the test machine element (220) of a test internal combustion engine (210) each Runtime limiting machine element (262) of the internal combustion engine (260, 420) corresponds, and during predetermined operation the operating conditions (X) of the test internal combustion engines (210) are recorded, (ii) a measurement of a test value (235) of the wear parameter for the wear of the test machine element in each case on the test machine element (220) of each of the number ( n) of test internal combustion engines (210) after their predetermined operation in such a way that (iii) the functional dependency (250) between the measured wear parameter (Y) on the one hand and the detected operating conditions (X) on the other hand of the test internal combustion engines (210) can be specified - Calculating a value (267) of the wear parameter (230) for the runtime-limiting machine element (262) of the internal combustion engine to be operated using the regressively determined functional dependency and predicting a remaining runtime of the runtime-limiting machine element (262), - Determining the runtime-limiting time interval the internal combustion engine to be operated from the remaining term of the term limiting M machine element (262).