Verification and Comparison of Two Tribodiagnostic Methods for Analyzing of the Worn out Oils in Service

Abstract

The paper deals with comparison and verification of two standard methods for measuring the total acid number of used oils. This is a tribodiagnostic method used to the detection of important quality parameters of oils in service, which determine the degradation of oil filling. This significantly affects the life cycle of oil and, consequently, the lubrication system. The methods for measuring aircraft motor and insulating oils are compared. The method procedures, preparation titration solutions, solvents, through the use of the test sample and electrodes to the accuracy of the measurement on the sample oils are compared. It compares the process of preparation methods of titrating solution, solvents, samples and fills through the use of electrodes to the accuracy of the measurement on the sample oils. From measurements of the samples accuracy and validity of both methods using statistical processing of measurement results is calculated. It utilizes internal control of measurements by means of an internal standard and also inter-laboratory comparison of measurement results.