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论文编号:JX783 论文字数:15736.页数:32 附CAD图
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摘 要
发动机按使用燃料种类分主要分为汽油机和柴油机，随着能源短缺问题越来越严重，柴油发动机的开发已成为当今发动机的主流。其气缸盖的好坏决定着发动机性能最重要的因数。其主要功用是密封气缸上部，并与活塞顶部和气缸一起形成燃烧室，同时也为其他零部件提供安装位置。
本设计主要完成发动机气缸盖的设计，通过研究发动机气缸盖各部零部件的结构和功用，完成4110发动机缸盖总成主要零部件的计算，并完成主要零部件的设计。本文首先完成缸盖的总体设计，从缸盖基本尺寸结构、气道、热平衡、螺栓等来设计；然后从设计要求、结构尺寸、材料选择等几方面，对气门、气门导管、气门座圈、气门弹簧等零部件进行设计计算，运用AutoCAD技术，完成气缸盖装配图以及各零部件图。
关键词：柴油机 气缸盖 气门组 CAD
The Design 0n the Cylinder Head
of Engine 4110
Abstract
According to category of fuel, engines are classified with petrol engine and diesel engine. With more serious problems of energy shortage, its development of diesel engine has been the mainstream of modern engine. The performance of engine mostly depends on quality of cylinder head. The head is to airproof the top of cylinder, then form fuel storage cell with the top of piston and cylinder, meanwhile provide installation for other parts.
The thesis concentrates on studying cylinder head of engine. By researching on composition and function of different parts, it will be finished caculating and designing main parts of 4110 engine’s cylinder head. Firstly, It finishes total design of cylinder head from some aspects of basic size, gas channel, heat balance, bolts; Secondly, it takes examples of valve, valve stem guide, valve seat and valve spring to design from requirement of design, size of structure, choice of material; finally, deign needs optimization, meanwhile adopts AutoCAD technology, completes assembly drawing of cylinder head and all kinds of parts drawing.
Keywords： Diesel engine；Cylinder head；Valve Group；CAD
目 录
中文摘要 i
英文摘要 ii
目录 iii iv
第一章 绪论.....................................................1-1
1.1 研究背景....................................................1
1.2 研究的目的与意义............................................1
1.3 研究方法与系统描述..........................................2
1.4 论文内容概述................................................2
第二章 缸盖的总体设计...........................................2-1
2.1 缸盖的结构设计..............................................3
2.2 缸盖基本尺寸的计算..........................................4
2.3 缸盖材料的确定..............................................5
2.4 缸盖进、排系统的设计........................................6
2.5 缸盖热平衡的设计...........................................11
2.6 缸盖螺栓的布置.............................................12
2.7 本章小结...................................................13
第三章 气门的设计...............................................3-1
3.1 气门的工作条件及要求.......................................14
3.2 气门结构的设计.............................................14
3.2 气门材料及优化.............................................19
3.4 本章小结...................................................20
第四章 气门导管、座和气门弹簧的设计.............................4-1
4.1 气门导管的设计.............................................21
4.2 气门座的设计...............................................21
4.3 气门弹簧的设计............................................22
4.3 本章小结..................................................25
第五章 总结.....................................................5-1
参考文献.............................................................27
致谢.................................................................28
图纸（另附）
