| 主权项 |
1. A processor-based system for predicting a portion of used lubricant in an engine that is to be drained and replaced by fresh lubricant or supplemented with fresh lubricant 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 the memory of the processor; a determiner that determines a future analysis parameter value of a mixture of the used lubricant at the end of the service interval by performing modeling of the plurality of analysis parameter values and the historical analysis parameter values, and compares 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 an amount of supplemental fresh oil or amount of used lubricant to be replaced with fresh lubricant in an engine in order to extend the lubricant to a future service interval, wherein the historical analysis parameter values include measured values of levels, concentrations, or amounts of one or more of iron, lead, tin, copper, aluminum, boron, nitration, potassium, silicon, or sodium in the lubricant samples. |
