0736 クロスヘッド軸受の油膜特性に関する研究(S44-2 燃料および潤滑技術(2),S44 燃料および潤滑技術)

概要

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The oil film thickness of the crosshead bearing was accurately measured using a laser induced fluorescence (LIF) method to clarify how the load carrying capacity could be improved. A decrease in the clearance ratio is generally effective in enhancing squeeze action on the entirety of the bearing pads. When the clearance ratio becomes too low, however, the ability to form an adequate wedge film is degraded, thereby causing the oil film thickness to decrease. Even when the bearing has a very low clearance ratio, because incorporating the taper geometry on both sides of the oil-groove promotes wedge action, a significant improvement in the oil film characteristics can be expected. The minimum oil film thickness becomes a maximum when using the taper geometry with a subtended length of 5deg and a taper angle of 0.1deg.
社団法人日本機械学会の論文
2007-09-07