This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of an On-Line System for Oil Void Fraction Measurements
Technical Paper
2018-01-1803
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
A prototype of measurement device that compresses a sample of engine oil at constant temperature and calculates its void fraction from the magnitude of volume change and pressure was proposed. During compression, the oil sample was pressurized to several hundreds of kPa above atmospheric pressure. Because the gas can be regarded as an ideal gas at this pressure level, the estimation of void fraction can be based on a simple formula derived from the ideal gas law, the law of conservation of mass and Henry’s law. The calibration line is represented by a linear equation of the void fraction, and from the coefficient of void fraction or the constant term the volume fraction of the dissolved gas in the initial state can be known. That is, by experimentally determining the calibration line, not only void fraction but also the volume fraction of the dissolved gas in the initial state can be known. Then, the results of measurement principle confirmation tests were given. Initial tests have revealed that the output of the device is highly repeatable over a range of void fractions from 0.05 to 0.30, and sample oil temperatures from 20 °C to 95 °C. A temperature dependence of the calibration lines was observed, although the effects were found to be minimal above 40 °C, particularly at higher void fractions. Finally, the measurement void fractions of the engine oil in the passage that is diverted from the sump bottom of the running engine (motored) were showed. The void fractions were less than 0.05. Measurements of void fraction were carried out in two ways: analysis of bubbles in the engine oil image data and the proposed method.
Authors
Topic
Citation
Makita, S. and Ikeda, Y., "Development of an On-Line System for Oil Void Fraction Measurements," SAE Technical Paper 2018-01-1803, 2018, https://doi.org/10.4271/2018-01-1803.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- Goodwin , M.J. , Dong , D. , Yu , H. , and Nikolajsen , J.L. Theoretical and Experimental Investigation of the Effect of Oil Aeration on the Load-Carrying Capacity of a Hydrodynamic Journal Bearing Proc. Inst. Mech. Eng. Part J: J. Eng. Tribol. 221 7 779 786 2007 10.1243/13506501JET279
- Kimura , Y. , Kato , N. , Kataoka , T. , Takahashi , K. et al. Bubble Behavior in Engine Lubricant Int. J. Automotive Engineering 2 149 153 2011 10.20485/jsaeijae.2.4_149
- Koch , F. , Hardt , T. , and Haubner , F. Oil Aeration in Combustion Engines - Analysis and Optimization SAE Technical Paper 2001-01-1074 2001 10.4271/2001-01-1074
- Arata , T. , Nove , N. , Ariga , K. , Yamashita , A. et al. Development of a Two-Stage Variable Displacement Vane Oil Pump SAE Technical Paper 2012-01-0408 2012 10.4271/2012-01-0408
- Staley , D. , Pryor , B. , and Gilgenbach , K. Adaptation of a Variable Displacement Vane Pump to Engine Lube Oil Applications SAE Technical Paper 2007-01-1567 2007 10.4271/2007-01-1567
- Brégent , R.L. and Porot , P.A. The SMAC, under Pressure Oil Aeration Measurement System in Running Engines SAE Technical Paper 2000-01-1818 2000 10.4271/2000-01-1818
- Flucon GmbH Concentration Gas System CGS http://flucon.de/en/products/cgs-measure-gas-concentration/
- IAVF GmbH Gas Content Meter GGM-P http://www.iavf.de/en/tmt-pruefstandtechnik/messtechnik-und-sondergerate/gasgehaltsmessgerat-ggm-p/
- Deconninck , B. , Delvigne , T. , and Videx , G. Air-X, an Innovative Device for On-line Oil Aeration Measurement in Running Engines SAE Technical Paper 2003-01-1995 2003 10.4271/2003-01-1995
- Schomann , L. , Matz , G. , Röbken , N. , and Krause , S. OILPAS - Online Imaging of Liquid-Particle-Suspensions - How to Prevent a Sudden Engine Breakdown SAE Int. J. Fuels Lubr. 3 2 2010 10.4271/2010-01-1528