クロスヘツド軸受の負荷能力に及ぼす油溝形状の影響(エンジンのトライボロジー・潤滑油,エンジンのトライボロジー・潤滑油)

概要

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Experiments were carried out to clarify the load carrying capacity of the crosshead bearing with taper geometry modified oil-grooves for large two-stroke diesel engines. A decrease in the clearance ratio is effective in enhancing squeeze action on the entirety of the bearing pads, and thereby improving load carrying capacity. When the clearance ratio becomes too low, however, the ability to form a thick oil film is degraded, causing the load carrying capacity to decrease. Incorporating a taper geometry on both sides of the oil-grooves promotes a thicker oil film. Thus a significant improvement in the load carrying capacity can be expected. The maximum load carrying capacity is achieved by the taper geometry of a subtended length of 5 degrees and a taper angle of 0.1 degree.
社団法人日本機械学会の論文
2004-09-04