二サイクル機関クロスヘッドピン軸受の潤滑について

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タイトル別名
  • On Lubrication of Cross Head Pin Bearing of 2 Cycle Engine
  • ニ サイクル キカン クロスヘッドピン ジクウケ ノ ジュンカツ ニ ツイテ

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The lubricating condition of the cross head pin bearing of a 2 stroke cycle engine is considerably unique, because the direction of load acting on the bearing is limited to one direction in addition to the incomplete revolution of the bearing. Therefore, the writers studied the lubricating mechanism of the bearing, and estimated the frictional coefficient of the bearing of a large bore engine experimentally. As a result, we came to the following conclusions. i) It is recognized that a greater part of load carrying capacity is that of the fluid film pressure, because the frictional coefficient was found as low as 0.002∼0.003. ii) The ratio of maximum sliding angle of the bearing to the pitch angle of the oil grooves 2φ/α is to be less than 1, but if 2φ/α is raised much higher than 1 the load capacity is reduced.

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