한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제20권1호
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  • Pages.131-140
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  • 2012
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
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엔진오일에 물이 혼합될 때 터보챠져 저어널 베어링의 열유체윤활 해석

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

  • 전상명 (호서대학교 자동차공학과)
  • 투고 : 2011.04.13
  • 심사 : 2011.07.05
  • 발행 : 2012.01.01
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초록

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.

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참고문헌

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