Method for predicting a remaining lifetime parameter of a component

A method for predicting a remaining lifetime parameter of a component installed in an engine system, the method performed by a controller of the engine system, the method comprising:

• repeatedly sensing at least one parameter of the engine system using at least one sensor to obtain a history of data values;
• storing the data values sensed by the at least one sensor in a memory of the controller to obtain stored data values;
• erasing a part of the stored data values from the memory to obtain a subset of the stored data values;
• fitting an aging pattern to the subset of data values to obtain a fitted aging pattern by determining parameters of the aging pattern that minimize an error between the subset of data values and calculated values provided by the aging pattern;
• and
• determining the remaining lifetime parameter of the component from the fitted aging pattern by comparing the fitted aging pattern with a parameter value threshold,
• wherein the storing and erasing comprises:
• storing first data values sensed during an initialization of the algorithm and retaining the first data values throughout a lifetime parameter determination of the component as part of the subset of data values,
• storing second data values from a most recent time period and using the second data values as part of the subset of data values, and
• erasing at least a part of third data values sensed and stored between the first data values and the second data values with time such that the subset of the data values contains only a part of the data values sensed and stored since the initialization of the algorithm.