王秀荣^1,2，李光^1,2，栾建伟^1,2，陈维余^1,2，姜波^1,2，

赵军^1,2

（1、内燃机可靠性国家重点实验室，山东 潍坊 261061；2、潍柴动力股份有限公司，山东 潍坊 261061）

摘要：柴油机密封问题是出厂台架试验时的重点关注内容之一。回顾近两年的柴油机试验记录,出现了一些漏水、漏油、漏气的问题,如何准确地查找漏水、漏油、漏气点和故障原因是解决密封问题的必要前提。

关键词：密封；泄漏；垫片；故障分析

Abstract:The sealing of a diesel engine is one of the key concerns in factory bench tests.Reviewing the test records of diesel engine tests in the past two years,there were issues of water leakage,oil leakage and air leakage.How to accurately find the sourcesof water leakage,oil leakage and air leakage and the cause of the faults was the necessary prerequisite for solving the sealing problems.

Key Words:Seal;Leakage;Gasket;Failure;Analysis