METHOD FOR PREDICTING LUBRICATING OIL LIFE AND LUBRICATING OIL LIFE PREDICTING DEVICE USING THIS METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for predicting a lubricating oil life, which is capable of accurately predicting the remaining life of lubricating oil even when a change occurs in a vehicular traveling pattern and directly displaying a distance to be traveled until the life of the lubricating oil expires. ;SOLUTION: A lubricating oil life predicting device is provided with a lubricating oil analyzing means 2 for analyzing the rate of a pentane insoluble amount contained in lubricating oil or the total acid value of the lubricating oil by measuring the infrared ray absorption level of the lubricating oil, a traveling distance measuring means 8 for integrating traveling distances from the time of exchanging the lubricating oil with another, a calculating means 4 for selecting a function having a highest relative coefficient from a plurality of preset functions as a regression approximate curve by using the measured deterioration level of the lubricating oil and the traveling distance and calculating a distance to be traveled by applying the limit value of the deterioration of the lubricating oil to the regression approximate curve and a display means 9 for displaying the calculated distance to be traveled.;COPYRIGHT: (C)1997,JPO