Experimental Estimation for Behavior of Cylinder Oil on Cylinder Liner Surface

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  • シリンダライナ表面の潤滑油挙動評価試験
  • シリンダライナ ヒョウメン ノ ジュンカツユ キョドウ ヒョウカ シケン

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Abstract

In cross head type marine diesel engines, cylinder oil is supplied at regular intervals and constant quantity from oil-feed holes to lubricate the running surface of piston rings and cylinder liner. Accordingly it is important to determine position of oil-feed holes, timing of oil-feed, running surface profile of piston rings and cylinder liner and so on to make cylinder oil spread wider and form thicker oil film. In this study, the authors examined how the factors influence the extension of cylinder oil using the tester which simulated cross head type marine diesel engines for the purpose of utilizing small quantities of cylinder oil effectively. We found that wave-cut surface of cylinder liner has better spreadability of cylinder oil than honed surface and wave-cut surface with oil grooves has the effect of circumferential spreadability especially.

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