【正文】 Tianjin University of Technology and Education 畢 業(yè) 設(shè) 計(jì) 專(zhuān) 業(yè)： 汽車(chē)維修工程教育 班級(jí)學(xué)號(hào)： 汽修 0403 21 學(xué)生姓名： 沈潔 指導(dǎo)教師： 魏健 高級(jí)實(shí)驗(yàn)師 二 〇〇九 年 六 月 天津工程師范學(xué)院本科生畢業(yè)設(shè)計(jì) 電子點(diǎn)火系統(tǒng)教具的設(shè)計(jì)與開(kāi)發(fā) Electronic Ignition System Design and Development of teaching aids 專(zhuān)業(yè)班級(jí)：汽修 0403 學(xué)生姓名： 沈潔 指導(dǎo)教師： 魏健 高級(jí) 實(shí)驗(yàn) 師 系 別： 汽車(chē)與交通學(xué)院 20xx 年 6 月 Ⅰ 摘 要 20 世紀(jì) 90 年代，一種新型的點(diǎn)火系統(tǒng)被用于許多汽車(chē)上。這種點(diǎn)火系統(tǒng)叫做無(wú)分電器點(diǎn)火系統(tǒng)，也可以稱(chēng)它為直接點(diǎn)火系統(tǒng)。這種點(diǎn)火系統(tǒng)不用許多高壓部件就可以提供很高的高壓電。這種點(diǎn)火系統(tǒng)可以提供更高的電壓且更好的減少部件的磨損。隨著計(jì)算機(jī)技術(shù)的飛速發(fā)展和發(fā)達(dá)國(guó)家對(duì)汽車(chē)排放限制及對(duì)其他性能要求的提高，微機(jī)開(kāi)始在汽車(chē)上應(yīng)用 — 用 微機(jī) 控制點(diǎn)火正時(shí)，形成微機(jī)控制點(diǎn)火系統(tǒng)。由于微機(jī)具有響應(yīng)速度快、控制精確 等優(yōu)點(diǎn) ， 以此 點(diǎn)火系統(tǒng) 為基礎(chǔ)， 外加傳統(tǒng)點(diǎn)火系統(tǒng)和電子點(diǎn)火系統(tǒng)， 設(shè)計(jì)和制作出可用于實(shí)訓(xùn)教學(xué)的 點(diǎn)火系統(tǒng)實(shí)驗(yàn)臺(tái)。 教師在利用 此實(shí) 驗(yàn)臺(tái)進(jìn)行授課時(shí)，學(xué)生更容易理解，記憶也更深刻，學(xué)習(xí)效率將大幅 提 高 。 設(shè)計(jì)說(shuō)明書(shū) 對(duì) 點(diǎn)火系統(tǒng)的 結(jié)構(gòu)組成進(jìn)行了講解，對(duì)其工作原理進(jìn)行了深入的分析，最主要的是對(duì) 實(shí) 驗(yàn)臺(tái)的設(shè)計(jì)過(guò)程進(jìn)行了全面的總結(jié)和詳細(xì)的說(shuō)明。 實(shí) 驗(yàn)臺(tái)的總體設(shè)計(jì)工作包括 教具 實(shí) 驗(yàn)臺(tái)臺(tái)架結(jié)構(gòu)的設(shè)計(jì)、 教具 實(shí) 驗(yàn)面板的設(shè)計(jì)、 教具 實(shí) 驗(yàn)臺(tái)面板接線(xiàn) 圖的設(shè)計(jì)、故障點(diǎn)的設(shè)計(jì) 以及 診斷端子的設(shè)計(jì) 。 在完成 點(diǎn)火系統(tǒng) 實(shí)驗(yàn)臺(tái)的設(shè)計(jì)和制作后，設(shè)計(jì)了 點(diǎn)火系統(tǒng) 故障設(shè)置與診斷實(shí)驗(yàn)的方法 。 關(guān)鍵詞： 點(diǎn)火系統(tǒng) ； 實(shí)驗(yàn)臺(tái)； 設(shè)計(jì) 與制作 ； 故障設(shè)計(jì) Ⅰ ABSTRACT In the early 1990s a new type of ignition system began to appear on many automobiles. It is called the distributorless ignition system, or direct ignition system. This system provides a high voltage spark at the spark plug without many of the secondary system parts. The system can provide higher voltages and does so with fewer parts to wear out. With the rapid development of puter technology and developed countries to limit emissions from vehicles and other performance requirements for the improvement of puter applications in the car with puter control of ignition timing to form a microputercontrolled ignition system, as the puter has a fast response, control high precision, Take this ignition as foundation to design ,Plus a traditional ignition system and electronic ignition system, and make ignition system experiment table. When teacher use this experiment table in teaching, the students prehends more easily, remember much deeper and the study efficiency will be significantly improved. The design specification explain the mechanical structure of ignition system and analysis the working principle and the drive route in detail. It is the main conte nts that the design process of ignition system experiment table is explained and summarized. The total design work ignition system experiment table include the design of experiment table structure, the design of frontpanel, the design of control chart, the design of fault. Overall design, structural features and the terminal of diagnose. Fault installed air conditioning and automatic electronic control circuit and the modified circuit bonding technology. Key Words： ignition system； experiment table； design and fabrication； fault design Ⅰ 目 錄 1 引 言 ........................................................................................................................... 1 2 微機(jī)控制電子點(diǎn)火系統(tǒng)主要組成部件 ............................................................................ 3 ............................................................................................................................ 3 傳感器 ..................................................................................................................... 3 高壓輸出 ................................................................................................................ 4 點(diǎn)火控制器 ............................................................................................................ 4 點(diǎn)火系統(tǒng)的分類(lèi)： ................................................................................................. 4 3 微機(jī)控制電子點(diǎn)火系統(tǒng)的控制過(guò)程 ............................................................................... 6 點(diǎn)火電流的恒定控制 ............................................................................................. 6 無(wú)分電器電子點(diǎn)火控制 ......................................................................................... 6 點(diǎn)火正時(shí)的控制 ..................................................................................................... 8 點(diǎn)火時(shí)序（判缸）的控制 ..................................................................................... 9 點(diǎn)火提前角與爆震的控制 ................................................................................... 10 發(fā)動(dòng)機(jī)的工作狀況對(duì)點(diǎn)火的影響 ...................................................................... 12 發(fā)動(dòng)機(jī)對(duì)點(diǎn)火系統(tǒng)的要求 .................................................................................. 13 4 汽車(chē)電子點(diǎn)火系統(tǒng)的故障診斷 ..................................................................................... 13 電子點(diǎn)火系統(tǒng)故障診斷的一般原則 .................................................................. 13 電子點(diǎn)火系統(tǒng)故障分析 ...................................................................................... 14 電子點(diǎn)火系統(tǒng)的故障診斷 .................................................................................. 16 故障現(xiàn)象 .............................................................................................................. 17 故障診斷 .............................................................................................................. 17 故障分析 .............................................................................................................. 17 5 教具的總體設(shè)計(jì)方案 ..................................................................................................... 18 6 教具 的面板設(shè)計(jì) ............................................................................................................. 19 教具面板電路圖的設(shè)計(jì) ...................................................................................... 20 7 教具 面板控制部分的設(shè)計(jì) ............................................................................................. 25 實(shí)驗(yàn)臺(tái)接線(xiàn)電路圖的設(shè)計(jì) .................................................................................. 25 電壓表的設(shè)計(jì)與選配 .............................................