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http://dx.doi.org/10.7467/KSAE.2012.20.1.131

Thermohydrodynamic Lubrication Analysis of Turbocharger Journal Bearing Involving the Mixture of Water within Engine Oil  

Chun, Sang-Myung (Department of Automotive Engineering, Hoseo University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.1, 2012 , pp. 131-140 More about this Journal
Abstract
In this study, using the governing equation for thermohydrodyamic lubrication involving the homogeneous mixture of incompressible fluid derived by based on the principle of continuum mechanics, it is discussed the effects of water within engine oil on the performance of high speed journal bearing of a turbocharger. The governing equations are the general equations being able to be applied on the mixture of Newtonian fluid and non- Newtonian fluid. Here, the fluid viscosity index, n of power-law non-Newtonian fluid is supposed to be 1 for the application of the journal bearing in a turbocharger lubricated with the mixture of two Newtonian fluid, for example, water within engine oil. The results related with the bearing performance are shown that the bearing friction is to decrease and the side leakage and bearing load increase as increasing the water content in an engine oil.
Keywords
Mixture of two fluids; Thermohydrodynamic lubrication; Emulsion; Homogeneous liquid;
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Times Cited By KSCI : 1  (Citation Analysis)
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