This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Lubricant Oxidation Monitoring Using FTIR Analysis - Application to the Development of a Laboratory Bulk Oxidation Test and to In-Service Oil Evaluation
Technical Paper
2003-01-1996
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes a methodology using FTIR analysis for monitoring the degradation by oxidation of lubricants. This methodology is based on the interpretation of the viscosity increase and of the carbonyl compounds formation measured by Peak Area Increase (PAI). This physicochemical approach was applied to the development of an innovative in-house bulk oxidation test, the Modified ICOT, and to in-service oil evaluation. This work provided the opportunity to confirm hypotheses and gave new information on the oxidation process of lubricants, especially concerning catalytic action of soluble iron and relationship between viscosity increase and carbonyl compounds formation. Laboratory test results showed a good correlation between PAI and TAN on bulk-oxidized oils, in which acidity is only related to the carbonyl compounds formed during the oxidation. Considering in-service engine oil samples, PAI gives complementary information to TAN on the degradation of the lubricant caused by oxidation. PAI measurements on used oil samples from TU5JP engine test showed that oxidation was not the principal factor governing thickening in this test.
Recommended Content
Topic
Citation
Obiols, J., "Lubricant Oxidation Monitoring Using FTIR Analysis - Application to the Development of a Laboratory Bulk Oxidation Test and to In-Service Oil Evaluation," SAE Technical Paper 2003-01-1996, 2003, https://doi.org/10.4271/2003-01-1996.Also In
References
- Maleville X. Faure D. Legros A. Hipeaux J.C. « Oxydation des huiles de base minérales d'origine pétrolière » Revue de l'IFP 1995 50 3 405 443 « Oxidation of mineral base oils of petroleum origin: the relationship between chemical composition, thickening and composition of degradation products » Lubrication Science 1996 9 1 3
- Bourdoncle B. Parc G. « Etude de la résistance à l'oxydation des lubrifiants. Oxydation d'une série d'hydrocarbures purs de poids moléculaire élevé » Rev. Inst. Franç. Du Pétrole 24 7-8 1969 940 952
- Igarashi J. Yoshida T. Watanabe H. « Concept of optimal aromaticity in base oil oxidative stability revisited » Preprint ACS Division of Petroleum Chemistry 1997 42 1 211 217
- Bowman W.F. Stachowiak G.W. « Application of sealed capsule differential scanning calorimetry-Part II: Assessing the performance of antioxidants and base oils » Lubrication Engineering May 1999 22 29
- Gatto V.J. Grina M.A. « Effects of base oil type, oxidation test conditions and phenolic antioxydant structure on the detection and magnitude of hindered phenol/diphenylamine synergism » Lubrication Engineering 1999 55 1 11 20
- “Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity)”
- “Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration”
- “Standard Test Method for Base Number Determination by Potentiometric Titration”
- “Standard Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration”
- Bouvier J. Arnould H. « Evaluation of Oil Performance Using the TU High Temperature Engine Test with a View to Extending Oil Drain Intervals » SAE 2000-01-1822 105 109
- “Stabilité à l'oxydation par vieillissement artificiel des lubrifiants liquides - Oxidation stability of lubricating oils by artificial ageing” GFC Test Method T-021-A-90
- « Oxidation Stability of Lubricating Oils Used in Automotive Transmissions by Artificial Ageing » CEC Test Method L-48-A-00
- Faure D. Hipeaux J.C. Guevellou Y. Legros A. « Oxidation Stability of Gasoline Engine Lubricants: effects of base oil chemistry in laboratory and engine tests » Tribotest Journal 5-4 June 1999 337 360
- Colclough T. « Role of Additives and Transition Metals in Lubricating Oil Oxidation » Ind. Eng. Chem. Res. 26 9 1987 1888 1895
- « Standard Test Method for Oxidation Stability of Gasoline Automotive Engine Oils by Thin Film Oxygen Uptake Test (TFOUT) »
- « Standard Test Method for Oxidation Stability of Steam Turbine Oils by Rotating Bomb (RBOT) »
- « Standard Test Method for Estimation of Molecular Weight (Relative Molecular Mass) of Petroleum Oils from Viscosity Measurements »