高出力内燃機関の主運動系における流体潤滑軸受の最適構造化の研究 : 第1報, コンロッド大端部軸受の油膜厚さを最小にする運転条件とその油膜挙動

概要

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This analysis aims to determine the severest engine operating condition for deterioration of oil film lubrication around the crankpin journal, and to clarify the reason why minimum oil film thickness (M. O. F. T.) occurs during engine operation. As a result, that operating condition is experimentally found to raise the surface temperature of the crankpin at 7400 rpm and no/load or deceleration. According to the narrow bearing theory for dynamic loading, a decrease in M. O. F. T. is caused by the following factors: the first is a deformation of the connecting rod and crankshaft, the second is an increase in oil temperature and the third is an increase in the weight of reciprocating moving parts.
一般社団法人日本機械学会の論文
1990-12-25