最近の舶用低速ディーゼル機関のシリンダライナ及びピストンリングの摩耗実績

概要

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The last investigation about actual circumstances of wear of low speed, long stroke 2 stroke marine diesel engines, clarified their abnormal wear conditions. Since then makers have taken various countermeasures against them, and in order to confirm their actual effects, Japan Ship Owners Association has been collecting wear data. This report describes the analysis results of wear conditions as to the types discussed at the last investigation, based on the data of two years (April 1987 - March 1989) . 1. Statistics of Oil Feed Rate of each type There are no differences between the actual feed rates converted in catalogue MCO of A type and C type. 2. Analysis of Wear Rate of Liner and Piston Ring Liner wear characteristics of A type is getting stable comparing with the last investigation. But on the contrary, excessive wear of ring takes place similarly on A type, C type and D type. 3. Analysis of Oil Feed Rate-Wear Rate It has been clarified that wear rate differs with each diesel maker. 4. Analysis Derating Rate-Wear Rate-Oil Feed Rate The higher wear rate is found out in the higher derating engine, and it is clarified that the oil feed rate on high derating engine is too small.
社団法人日本マリンエンジニアリング学会の論文