Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Circumferential Groove Effects on the Minimum Oil Film Thickness in Engine Bearings

  • Cho, Myung-Rae (Turbo & Power Machinery Research Center, Seoul National University) ;
  • Shin, Hung-Ju (Graduate School, Seoul National University) ;
  • Han, Dong-Chul (Mechanical Design & Production Engineering, Seoul National Univ)
  • Published : 2000.07.01
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Abstract

This paper presents the effects of circumferential groove on the minimum oil film thickness in engine bearings. The fluid film pressures are calculated by using the infinitely short bearing theory for the convenience of analysis. Journal locus analysis is performed by using the mobility method. A comparison of minimum oil film thickness of grooved and ungrooved bearing is presented. It is found that circumferential $360^{\circ}$ groove only reduces the absolute magnitude of the oil film thickness, but $180^{\circ}$ half groove affects the shape of film thickness curve and position of minimum oil film thickness.

Keywords

References

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