船舶柴油机活塞的检修-毕业论文.doc

船舶柴油机活塞的检修 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。因此，在使用中活塞容易损坏，特别是高增压柴油机的活塞，这就需要轮机管理人员根据其原理认真分析，找出故障的原因，进而解决问题，使机器恢复正常运转，保证船舶航行安全。 关键词：常见故障，活塞处理，柴油机 Abstract Maritime transport is an important part of transportation, transportation in the promotion of foreign trade development and promotion of foreign trade growth and other aspects of the incomparable advantage of other modes of transport play an increasingly important role.?The structure of marine diesel engine is more complex, it is composed of many institutions and systems.?Although the structure of a variety of diesel engines, models vary, but the working principle and the overall structural point of view there are a lot in common.?Diesel engine piston is one of the major moving parts, is part of the combustion chamber.?Piston work under a lot of mechanical stress and thermal stress, but also to withstand friction.Therefore, the piston is easy to damage in use, especially high-supercharged diesel engine pistons, engine management which requires a careful analysis based on the principle, to identify the causes, and thus solve the problem, the machine back to normal operation, to ensure safety of navigation?. Key wods: familiar malfunction, Pistons?deal，diesel 目 录 简述活塞························································································1 1. 1 活塞的作用…………………………………………………………………………1 1. 2活塞的工作条件………………………………………………………………………1 第二章 活塞损坏的原因·····························································2 2．1活塞外圆表面的磨损原因 …………………………………………………………2 2. 2 环槽磨损的原因……………………………………………………………………2 2. 3 活塞裂纹和破裂的原因……………………………………………………………3 2. 4 活塞烧蚀原因……………………………………………………………………………3 第三章 活塞损坏的修复················································································4 3. 1活塞外圆表面磨损的修复……………………………………………………………4 3. 2环槽磨损的测量与修复…………………………………………………………………4 3. 3活塞裂纹的修复…………………………………………