空冷式发动机中冷器设计

车辆工程专业毕业论文，论文编号:JX917  论文字数:14784.页数:31

摘 要
 本文介绍了中冷器的作用、发展前景及空空中冷器的设计过程。中冷器的作用是降低发动机的进气温度，有效减轻了发动机的热负荷，提高了发动机的可靠性。同时，改善了燃烧，节省了油耗，降低了排气温度。特别是增压中冷能有效地降低柴油机排放中NOx的含量，净化了废气。近年来，增压已经成为提高功率、满足人们对柴油发动机动力性越来越高要求的一种十分有效的方法，增压比有逐渐提高的趋势。但较大的增压比也将导致发动机气缸压力提高及其机械负荷和热负荷增加。因此在增压系统中越来越多的应用中间冷却技术来降低发动机进气温度。国内中冷器的研发还处于起步阶段，在中国有很大的市场。中冷器的组件包括上下气室、主板、侧板、散热带、冷却管、紊流片。其中芯子是最重要的部分，决定中冷器的效率。首先根据给定的数据计算芯子，接着确定冷却管、散热带、紊流片的种类和数据，然后根据芯子的尺寸计算得出主板、侧板和气室的各个数值。利用CAD制图软件绘制出装配以及零件图。呈现出一个完整的设计过程。

关键词：发动机  中冷器    设计  组件

Abstract
 The paper introduces inter-cooled role, the development prospect and empty design process. Inter-cooled The effect is to reduce inter-cooled engine temperature, effectively reduce the heat load of engine, improving the reliability of the engine. At the same time, improve the combustion, save fuel, reducing the exhaust temperature. Especially turbocharged inter-cooled diesel can effectively reduce emissions in the content, purify NOx emissions. In recent years, pressure increase power has become for diesel engine, meet people and high performance requirements of a kind of very effective method, has been gradually improved than booster. But the bigger than will also cause pressurized cylinder pressure and improve engine thermal load and mechanical load. Therefore in the pressurization system of more and more application of intermediate cooling technology to reduce the engine temperature. The development of domestic inter-cooled is still in the initial stage, there''s a big market in China. The kit includes and inter-cooled gas chamber, the motherboard, lateral plate, tropical, cooling tube, scattered turbulence. Which is the most important part of''s decision, the efficiency. Inter-cooled According to the data calculation is given first, then the cooling tube''s determination and tropical, turbulence of species and data, then according to the size of the board''s lateral plate is calculated, and the gas chamber of all values. Using CAD drawing software rendering the assembly and detail drawings. Presents a complete design process.

KEYWORDS：Engine  inter-cooled  designed  components

目    录
中文摘要...  i
英文摘要...........  ii
第一章  绪论  1
 1.1 选题意义...  1
 1.2 国内外研究现状   1
 1.3中冷器的作用.....  4
第二章  中冷器设计的术语及要点..    6
 2.1 中冷器设计常用术语  ...  6
 2.2 中冷器设计前需要的数据 ..... 7
 2.3 中冷器的结构形式...  8
第三章  中冷器设计计算..  .  11
 3.1 芯子的设计计算........  11
 3.2 翅片：散热带和紊流片 .  16
 3.3 冷却管......  19
 3.4 管子组件...... .. 19
 3.5 主板.........  20
 3.6 侧板......  21
 3.7 气室的设计.......  21
 3.8 中冷器总成技术要求.....  23
第四章  结论...  .  26
参考文献.............  27
致谢............  28