船舶柴油机活塞的检修1112

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1、成人高等教育毕业设计（论文）题目：船舶柴油机活塞的检修学生姓名：姜龙函授站点：威海学号：091462001专业名称：轮机工程学习层次：本科学习形式：函授指导教师：陈群生审核签字：二○一一年九月摘要海上运输是交通运输的重要组成部分，在促进外贸运输发展和推动对外贸易增长等方面以其他运输方式不可比拟的优势发挥出越来越重要的作用。船舶柴油机的结构比较复杂，它是由许多机构和系统组成。尽管各种柴油机的结构、型号各异，但从工作原理和总体结构上看则有很多共同之处。活塞是柴油机的主要运动部件之一，是燃烧室的组成部分。活塞工作时承受着很大的机械应力和热应力，同时还承受摩擦，所以活塞很容易损

2、坏，而且损坏后所带来的影响或损失也是不容忽视的。本文由活塞的四种常见的损坏形式来阐述活塞式如何损坏的及损坏后的修理和检验。关键词：常见故障，活塞处理，柴油机，修理，检验AbstractMaritimetransportisanimportantpartoftransportation,transportationinthepromotionofforeigntradedevelopmentandpromotionofforeigntradegrowthandotheraspectsoftheincomparableadvantageofothermodesoftrans

3、portplayanincreasinglyimportantrole. Thestructureofmarinedieselengineismorecomplex,itiscomposedofmanyinstitutionsandsystems. Althoughthestructureofavarietyofdieselengines,modelsvary,buttheworkingprincipleandtheoverallstructuralpointofviewtherearealotincommon. Dieselenginepistonisoneofthe

4、majormovingparts,ispartofthecombustionchamber. Pistonworkunderalotofmechanicalstressandthermalstress,butalsotowithstandfriction.Therefore,thepistoniseasytodamageinuse,especiallyhigh-superchargeddieselenginepistons,enginemanagementwhichrequiresacarefulanalysisbasedontheprinciple,toidentif

5、ythecauses,andthussolvetheproblem,themachinebacktonormaloperation,toensuresafetyofnavigation .Keywods:familiarmalfunction,Pistons deal，diesel目录第一章简述活塞························································································11.1活塞的作用…………………………………………………………………………11.2活塞的工作条件……

6、…………………………………………………………………1第二章活塞损坏的原因·····························································22．1活塞外圆表面的磨损原因…………………………………………………………22.2环槽磨损的原因……………………………………………………………………22.3活塞裂纹和破裂的原因……………………………………………………………32.4活塞烧蚀原因……………………………………………………………………………3第三章活塞损坏的修复······························

7、··················································43.1活塞外圆表面磨损的修复……………………………………………………………43.2环槽磨损的测量与修复…………………………………………………………………43.3活塞裂纹的修复…………………………………………………………………………53.4活塞烧蚀测量与修复……………………………………………………………………6第四章修复后活塞的检验·······················································