ピストンからの潤滑油消失に関する研究

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書誌事項

タイトル別名
  • A Study of the Oil Loss through the Piston
  • ピストン カラ ノ ジュンカツユ ショウシツ ニ カンスル ケンキュウ

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抄録

On an assumption that the oil comes up by the action of "a non-return motion of the oil, " the amount of oil which come up through the clearances about the oil control ring and the top land of the piston was calculated on the bases of the hydrodynamical theory. And then the Nissan's automotive engine (1200 cc, 4 cylinders, water cooling) was run on the bench, and the oil loss when these clearances were changed was measured by a special precision divice. As a result, the following fact was obtained, i.e. the clearance between the cylinder wall and the top land of the piston, and the perfectness of the contact of the oil control ring with the upper side of the groove, and also with cylinder wall affect extremely the oil loss.

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