船舶柴油机 毕业论文.doc

船舶柴油机—柴油机的安装、拆装、故障与维修引言: 柴油机是一种压缩发火的往复式内燃机。它使用挥发性较差的柴油或劣质燃料油做燃料。采用内部混合法( 燃油与空气的混合发生在气缸内部) 形成可燃混合气; 缸内燃烧采用压缩式(靠缸内空气压缩形成的高温自行发火) 。这种工作特点使柴油机在热机领域内具有最高的热效率( 已达到 55 %左右), 而且允许作为船用发动机使用。因而, 柴油机在工程界应用十分广泛。尤其在船用发动机中,柴油机已经取得了绝对领先地位。 Diesel engine pression ignition reciprocating bustion engines. It uses less volatile diesel fuel or poor quality fuel oil for fuel. With internal mixing (fuel and air mixture in the cylinder inside) the formation of flammable mixture; bustion pression (compressed air cylinder formed by self-ignition temperature). This work characteristics of the engine in the field of heat has the highest thermal efficiency (about 55% has been reached), and allows use asa marine engine. Thus, the diesel engine was widely used in engineering. Especially in marine engines, diesel engines have achieved an absolute leader. 内容摘要: 柴油机的质量除取决于设计、材料和制造工艺外, 更重要的是取决于装配或安装与校中质量,并直接影响柴油机的可靠性与经济性。本章主要介绍作为船舶主机的大型低速柴油机主要零部件在船上的安装与校中, 主要包括: 机座的定位与安装; 机架、气缸体和贯穿螺栓的安装; 固定件相互位置的校中; 活塞运动部件的平台检验;运动件与固定件相互位置的校中等;这部分内容对轮机员日常检修、故障分析和驻厂的监修与监造均很重要,是必不可少的安装工艺知识。 In addition to the engine depends on the quality of design, materials and manufacturing processes, the more important depends on the assembly or installation and alignment quality, and directly affects the reliability and economy of diesel engines. This chapter describes the host asa large low-speed ship diesel engine spare parts on board the installation and alignment, including: base of the positioning and installation; rack, cylinder block and through bolt installation; fixed pieces of the school in each location; piston moving parts of the platform test; moving parts and fittings between the middle school location; this part of the routine maintenance of the engineer, failure analysis and the Supervisor Mill and supervision are very important, is essential knowledge of the installation process . 柴油机就是将气体压缩, 喷油燃烧( 给工质加热), 气体膨胀对外作功; 为使连续不断的作功, 就得对工质进行更换的机体, 每个工作循环分五个过程: 进气、压缩、喷油、燃烧、膨胀、排气。柴油机的安全性比汽油机要高; 热效率好,经济性高;功率、转速范围广;结构紧凑, 重量轻