某船柴油机增压器故障原因分析

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中图分类号：U672

文献标志码：A

Abstract： Diesel engine turbochargers operate at speeds up to tens of thousands of revolutions per minute， making them components prone to failure.This study addresses the problem of crack initiation and fracture in a marine diesel engine's turbocharger.A comprehensive fault investigation was conducted，incorporating material analysis data from athird-partyagency.Theresults indicate thatthe failure was atributed to aslightly elevated casting temperature， which ledto localized coarse grain structure inthe turbine blades，therebyreducing their fatigue resistance.The rootcauses of the excessive temperature were further analyzed.The conclusions and insights derived from this study can provide a valuable reference for resolving similar engineering issues.

Key words：turbocharger; blade； crystal particle； fault

1 引言

2 故障现象

柴油机增压器是一种用于提高柴油机性能的重要装置，其工作原理是通过回收柴油机排放的废气能量，驱动涡轮旋转并压缩进气空气，从而提高发动机的进气密度和燃烧效率。（剩余3997字）