METHOD FOR THE ANALYSIS OF LUBRICANT BASICITY

摘要

The present invention relates to a method to directly measure a lubricating oil's Total Base Number (TBN) during engine operations using an infrared ("IR") sensing device. The method measures either the actual TBN of the oil, or the TBN depletion of the oil. Either value may be determined without comparison to a reference oil. The method comprises determining the IR spectrum for the oil, pre-selecting a certain frequency range, finding the peak within that range, calculating the absorbance of the peak and determining the TBN or TBN depletion from that value.