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摘 要
490型號柴油機(jī)是配套40ps拖拉機(jī)以及收割機(jī)的首選動力，經(jīng)過一系列改裝和調(diào)整后可用于固定排灌動力、發(fā)電機(jī)組和小型載重汽車上。這篇論文是關(guān)于490型柴油機(jī)的整體設(shè)計，主要是對490型柴油機(jī)的主要運(yùn)動零件設(shè)計以及一些輔助系統(tǒng)的簡要設(shè)計。通過熱力計算、動力計算以及其它理論計算得到490型號柴油機(jī)的一些性能曲線，并根據(jù)性能進(jìn)行合理的零件設(shè)計，從而使490柴油機(jī)具備更好的經(jīng)濟(jì)性能和動力性能。本文除了包括曲柄連桿機(jī)構(gòu)的設(shè)計外，還包括進(jìn)排氣及配氣系統(tǒng)設(shè)計，燃油輸送及噴射系統(tǒng)設(shè)計、冷卻系統(tǒng)設(shè)計、潤滑系統(tǒng)設(shè)計。
關(guān)鍵詞：490型，柴油機(jī)，設(shè)計， 熱力計算，動力計算
Abstract
490 model diesel engines are the necessary 40ps tractor as well as harvester's first choice power, after undergoing a series of re-equipping and the adjustment, may use on the fixed irrigation and drainage power, the power set and the small truck. This paper is about 490 diesel engine's overall designs, is mainly to 490 diesel engine's main motion parts designs as well as some servosystem's brief design. Through the thermal design, the power computation as well as other theoretical calculation obtain 490 model diesel engine's some performance curve, and carries on the reasonable components design according to the performance, thus causes 490 diesel engines to have a better economical performance and the power performance. This article besides includes design of crank link motion gear, but also includes design of air admission and exhaust system, design of fuel oil transportation and injection system, design of cooling system, design of lubrication system.
Key words: 490，diesel engine，design，thermal calculation, dynamic calculation
目 錄
摘 要 I
Abstract II
第一章 前言 3
1.1 研究目的和意義 3
1.2 國內(nèi)外研究現(xiàn)狀 3
1.3 研究內(nèi)容和方法 4
第二章 柴油機(jī)的總體設(shè)計 5
2.1 柴油機(jī)的總布置 5
2.2 柴油機(jī)的總體設(shè)計 7
第三章 結(jié)構(gòu)設(shè)計 11
3.1 機(jī)體組 11
3.2 活塞連桿組 14
3.3 曲軸飛輪組 20
第四章 內(nèi)燃機(jī)輔助系統(tǒng)設(shè)計 23
4.1 配氣系統(tǒng)的設(shè)計 24
4.2 燃油供給系統(tǒng)設(shè)計 26
4.3 潤滑系統(tǒng)設(shè)計 28
4.4 冷卻系統(tǒng)設(shè)計 30
4.5 起動系統(tǒng)設(shè)計 33
第五章 結(jié)論與建議 34
5.1 490型柴油機(jī)設(shè)計結(jié)論 34
5.2 對于490型柴油機(jī)的幾點(diǎn)改進(jìn)建議 34
致謝 35
參考文獻(xiàn) 36
附錄 37