This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Robust On-Board Engine Oil Monitoring. 2. Determination of Initial Oil Quality and Oil Aeration from Electrical Resistivity and Permittivity
Technical Paper
2009-01-2687
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Electrical ac impedance measurements were used for tracking the time dependence of the electrical properties (resistivity and permittivity) for 18 fully formulated engine oils during two types of engine dynamometer tests: high-temperature high-load (HTHL) and postal cycle (PC). The signatures in the time dependence of the electrical resistivity of engine oil at beginning-of life (BOL) and during early service differentiate both oil service classifications and test/driving conditions. The air content in engine oils can be determined quantitatively from the permittivity with a detection limit of 0.2 vol%. The significance of our results and their consequences for on-board monitoring of engine oil through sensing technology based on electrical ac impedance measurements are discussed.
Recommended Content
Topic
Citation
Halalay, I. and Schneider, E., "Robust On-Board Engine Oil Monitoring. 2. Determination of Initial Oil Quality and Oil Aeration from Electrical Resistivity and Permittivity," SAE Technical Paper 2009-01-2687, 2009, https://doi.org/10.4271/2009-01-2687.Also In
References
- Halalay I.C. Schneider, E.W. In-Situ Monitoring of Engine Oils Through Electrical AC Impedance Measurements SAE- 2007-01-4092 , SAE International, Warrendale, PA 2007
- Landau L. D. Lifshiftz, E. M. Electrodynamics of Continuous Media Pergamon London 1960 4
- Looyenga, H. Physica 31 1965 401
- Schwartz S.E. Smolenski, D.J. Development of an Automatic Engine Oil Change Indicator System SAE Paper 870403 1987
- Schneider, E.W. Development of an Engine Dynamometer Test for Rapid Evaluation of Engine Oil Degradation under High-Temperature, High-Load Conditions SAE Paper 2005-01-3821 2005
- Turner J. D. Austin, L. Electrical techniques for monitoring the condition of lubrication oil Meas. Sci. Technol. 14 2003 1794