Patent ID: 8977421
Filing Date: 2015-03-10
Classification: F01M,F16N,G01N,G06Q

Abstract:
1. A processor-based system for predicting a lubricant drain interval in an engine based on a plurality of analysis parameter values measured in a plurality of samples of used engine lubricant taken from the engine over a period of time, the system comprising: a first input that receives the plurality of analysis parameter values and a plurality of historical analysis parameter values for the engine that are indicative of one or more characteristics of the used lubricant and stores the plurality of analysis parameter values and historical analysis parameter values in a memory of a processor; a second input that receives an analysis parameter threshold value for the used lubricant at the end of a service interval and stores the analysis parameter threshold value in a memory of the processor; a determiner that determines a future analysis parameter value for determining the lubricant drain interval by performing modeling of the plurality of analysis parameter values and the historical analysis parameter values, and comparing the future analysis parameter value to the analysis parameter threshold value to determine whether or not the future analysis parameter value exceeds the analysis parameter threshold value at the end of the service interval in order to provide an output indicating the lubricant drain interval (LDI) in an engine, wherein the modeling performed by the determiner is selected from a partial least squares regression model and a neural network model, and wherein said analysis parameter values and said historical analysis parameter values comprise three or more used lubricant analysis parameters, and said analysis parameter values and said historical analysis parameter values further comprise two or more non used lubricant analysis parameters.