TAN and TBN which provide information about the degree of lubricating oil oxidation and the properties of alkali reserve is usually used in measurement of aging degree of lubricant, and its value can determine whether the amount of certain acid additives added is enough. It can avoid the problems such as, the abnormal wearing, corruption, deposit, filter blocking. The TAN and TBN of Lubricating oil is measured by the standard based on acid-base titration, in which potentiometric titration is used more. However it has to face the problems of complicated operation, expensive consuming material, and large quantity of sample oil, well trained operator and difficulty in handling reagent. Due to the oxidation of lubricating oil products and alkaline additives in the infrared spectrum has strong structural information, therefore, the TAN and TBN of lubricating oil can be monitored by infrared spectra. The quantification of TAN and TBN based on neutralization reaction was built up through the measurement of portable infrared spectroscopy. The reliable quantification of TAN and TBN can be archived by three procedures of lubricant type classification, building up lubricant library and multi-parameters regression. This method is supported by recent ASTM D7889 standard. Compared with the other standard, this method has a high speed of analysis, and it can read out measurement result directly without any solvent. The accuracy of measurement is relatively high, operation is relatively simple, and improve the detection speed at a certain degree. The method can be used widely in industry field, including in laboratory offline measurement and in situ online measurement.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Preventive maintenance in urban public transport: the role of engine oil analysis.
Sci Rep
December 2024
Department of Power Engineering and Transportation, University of Life Sciences in Lublin, Gleboka 28, 20-612, Lublin, Poland.
Engine oil is a valuable source of information on the technical condition of the drive unit. Under the influence of many factors, including operating conditions, time, high temperature, and various types of contamination, the oil gradually degrades, which can result in serious engine damage. The subject of the article focuses on an attempt to answer the questions of how engine failure affects the degradation of engine oil and whether we can use this knowledge to detect potential problems in public transport vehicles at an early stage.
View Article and Find Full Text PDFElectrical Parameters as Diagnostics of Fresh Engine Oil Condition-Correlation with Test Voltage Frequency.
Sensors (Basel)
April 2023
Institute of Management and Quality, Faculty of Economics, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland.
The aim of this study was to assess whether electrical parameters (capacitance and conductivity) of fresh engine oils-tested over a wide range of measurement voltage frequencies-can be used for oil quality assessment and its identification, based on physicochemical properties. The study encompassed 41 commercial engine oils with different quality ratings (American Petroleum Institute (API) and European Automobile Manufacturers' Association (ACEA)). As part of the study, the oils were tested for their total base number (TBN) and total acid number (TAN), as well as their electrical parameters, including impedance magnitude, phase shift angle, conductance, susceptance, capacitance and quality factor.
View Article and Find Full Text PDFCommunity-wide Screening for Tuberculosis in a High-Prevalence Setting.
N Engl J Med
October 2019
From the Woolcock Institute of Medical Research (G.B.M., P.T.B.N., T.-A.N., K.B.L., D.T.T.T., Q.T.N.V., O.T.T.L., Y.H.N., P.H.M., J.H., G.J.F.), the National Lung Hospital (N.V.N., H.B.N.), the National Institute of Hygiene and Epidemiology (V.-A.T.N..), and the National Tuberculosis Control Program (N.V.N., H.B.N., K.H.T., S.V.N.), Hanoi, and the Center for Social Disease Control, Ca Mau (K.H.T., S.V.N.) - all in Vietnam; the South Western Sydney Clinical School, University of New South Wales (G.B.M., J.H.), and the Faculty of Medicine and Health (G.B.M., N.V.N., T.-A.N., V.Q.D., P.H.M., V.S., W.J.B., G.J.F.) and the Centenary Institute (W.J.B.), University of Sydney, Sydney, the School of Social Sciences, Monash, Clayton, VIC (P.H.M.), and the Department of Anthropology, Macquarie University, North Ryde, NSW (P.H.M.) - all in Australia; the Center for Operational Research, International Union against Tuberculosis and Lung Disease, Paris (H.B.N.); and the Global Tuberculosis Program, World Health Organization, Geneva (L.N.N.).
Background: The World Health Organization has set ambitious targets for the global elimination of tuberculosis. However, these targets will not be achieved at the current rate of progress.
Methods: We performed a cluster-randomized, controlled trial in Ca Mau Province, Vietnam, to evaluate the effectiveness of active community-wide screening, as compared with standard passive case detection alone, for reducing the prevalence of tuberculosis.
An overview of the oil-brine interfacial behavior and a new surface complexation model.
Sci Rep
April 2019
Danish Hydrocarbon Research and Technology Centre, Technical University of Denmark, Elektrovej building 375, 2800 Kgs, Lyngby, Denmark.
The few existing surface complexation models (SCM) for the brine-oil interface have important limitations: the chemistry of each crude oil is not considered, they cannot capture the water/non-polar hydrocarbons surface charge, the interactions between Na and the acid sites are not included, and the equilibrium constants for the adsorption reactions are not validated against experimental data. We address the aforementioned constraints by proposing an improved diffuse-layer SCM for the oil-brine interface. The new model accounts for the chemistry of crude oils by considering surface sites linearly dependent on the TAN (total acid number) and TBN (total base number).
View Article and Find Full Text PDF[A Fast Method to Measure TAN and TBN of Used Lubricant Oil Based on Portable Infrared Spectrometer].
Guang Pu Xue Yu Guang Pu Fen Xi
February 2017
TAN and TBN which provide information about the degree of lubricating oil oxidation and the properties of alkali reserve is usually used in measurement of aging degree of lubricant, and its value can determine whether the amount of certain acid additives added is enough. It can avoid the problems such as, the abnormal wearing, corruption, deposit, filter blocking. The TAN and TBN of Lubricating oil is measured by the standard based on acid-base titration, in which potentiometric titration is used more.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!