【正文】 故障診斷與排除 1 檢查自動變速器油的油面高 度若油尺上沒有自動變速器油說明自動變速器內的油已全部漏光對此應檢查油底殼自動變速器油散熱器油管等處有無破損如有嚴重露處應修復后重新加油如果油面正常進行下一步檢查2 檢查自動變速器變速桿與手動搖臂之間的連桿拉索有無松脫如有松脫應重新調整好變速桿的位置若無松脫進行下一步檢查 3 檢查主油路油壓拆結論 總結與體會 汽車電控自動變速器診斷與分析是一個很復雜的系統(tǒng)而且技術在不斷更新這就要求維修行業(yè)的工作人員必須不斷研究和學習但只要掌握根本的診斷方法分析有條理加以經驗的不斷積累維修也會得心應手 本文通過分析變速器的現(xiàn)狀變速器 的概述與特點液壓部分機械部分以及電控部分目的是為故障診斷與分析作鋪墊在診斷的章節(jié)中有豐富的理論知識并插入一些圖表本文主要對以下幾個部分進行相關的研究工作 1 變速器的發(fā)展狀況并明確研究的主要目的和意義 2 對變速器的種類組成和特點給一個總體的概述 3 自動變速器中液壓部分的解析主要介紹了液力變矩器和幾個主要閥體 4 機械裝置和電控裝置的淺析在這里主要研究幾個檔位的換檔過程一些和傳感器 5 電控自動變速器的故障診斷和分析理論和實踐相互聯(lián)系 6 對一些常見的故障給予分析和處理 在電控自動變速器故障診斷中自我診斷檢測診斷與人 工經驗診斷各有優(yōu)點和不足在實際應用中如果能將它們有機地結合起來將大大提高維修速度和質量實踐證明只有在重視傳統(tǒng)經驗診斷法的同時力求充分利用現(xiàn)代檢測診斷技術取長補短根據故障現(xiàn)象和發(fā)生條件對故障進行分析和判斷才能迅速準確地發(fā)現(xiàn)并排除故障減少不必要的拆卸和零部件更換節(jié)省大量的人力和物力 在本次論文寫作過程中查閱了大量的有關資料并與實習工作中遇到的問題結合資料中也出現(xiàn)一些維修中很難見到的問題實習期間也得到很多領導和師傅的指導他們毫不保留有問必答在這里忠心謝謝他們還有陳繼飛老師對本文的不斷修改終得成果謝謝老師故障診斷與 分析是一門博大精深的課題雖然檢測中有儀器設備的相助但有些問題確實需要多年的經驗才能分析出來這也就要求修理行業(yè)的人們要有敬業(yè)踏實刻苦的精神 致 謝 本文的研究工作是在導師的悉心指導下完成的從論文的選題總體構思直至論文的撰寫修改都得到的精心指點和諄諄教導在此表示衷心的感謝 感謝我的家人在我的學習過程中生活上和精神上關懷和支持 [1]齊曉杰 安永東 齊英杰 汽車液壓夜力與氣壓傳動技術 [M] 北京 化學工業(yè)出版社 2021 [2]譚本忠 大眾車系維修經驗集錦 [M] 北京 機械工業(yè)出版社 2021 [3]薛祖德 液 壓傳動 [M] 北京 中央廣播電視大學出版社 1998 [4]宋福昌 電控液力自動變速器的結構與維修 [M] 北京 國防工業(yè)出版社 2021 [5]過學訊 汽車自動變速器結構和原理 [M] 北京 機械工業(yè)出版社 2021 [6]陳家瑞 汽車構造 [M] 北京 人民交通出版社 2021 [7]張育華 徐士鳴 汽車電子控制技術與故障診斷 [M] 北京 大連理工大學出版社 1995 [8]欒琪文 自動變速器實用維修圖集 [M] 沈陽 遼寧科學技術出版社 2021 [9]孫志成 汽車故障診斷與排除實列 [M] 北京 金盾出版社 2021 [10]馮淵 汽車電子控制技術 [M] 北京 國防工業(yè)出版社 2021 [11]楊清德 尤宜材 轎車電子電器維修 [M] 北京 電子工業(yè)出版社 2021 [12]馮永忠 大眾車系 09G 自動變速器維修圖冊 [M] 北京 機械工業(yè)出版社 2021 [13]張建俊 汽車診斷與檢測技術 [M] 齊齊哈爾 2021 [14]趙福堂 汽車電器與電子設備 [M] 北京 北京理工大學出版社 2021 [15]朱迅 汽車自動變速器維修 [M] 北京 機械工業(yè)出版社 2021 [16] KNIBB GORMEZANO PARTNERS LARRY PLACHNO Test Driving the J4500 and ZF AS Tronic Transmission[J] National Bus Trader January 2021 附錄一 英文原文 Transmission Abstract The modern automobile engine is a powerful lightweight and dependable powerplant Howeverit is not perfect for three reasons First morden engines do not produce much torque at low engine speeds Second engine produce imum torque between 2021～ 3000rmin As a result engines operate best only within this fairly narrow range Thirdmuch more force is needed to move a car from rest than to keep it moving once it is started Thus the vehicle needs a wider range of torque than is available from the engine For these reasons cars need a device that makes better use of engine power and torque The transmission is this device There are three types of transmissionsmanual MT automatic AT and automatic manually transmission AMT In simple terms a transmission multiplies engine torque andthrough gearssends that power to the drive axle A driver shifts or changes the gears to increase or decrease the torque produced by the engine In a car with a manual transmission a driver shifts the gears manually In a car with an automatic transmission the gears shift automatically The gears reduce engine speed in the transmission so that engine torque increases This speed decrease and torque increase are needed so that the engine can run at higher speeds At such speeds it produces more torque and is more efficient In other words the transmission allows higher engine speeds at low vehicle speeds and multiplies torque to help move the car INTRODUCTION Automatic Manually Transmission AMT In order to simplify driver operation of the transmission and to improve economyuse has been made recentlyparticularly in trucks of semior fullyautomatic manually shifted transmissions Although in parision with automatic powershift transmissions these new transmissions have the disadvantage that all gearshifts involve an interruption in the tractive power they still offer considerable advantages Fine spacing of rations with up to 16 gears 2Higher transfer efficiency 3Lower costs 4Same basic unit for manually shifted and automatic transmissions 1Operating principle Mounted on the transmission is a central valve block which converts electrical signals into pneumatic or hydraulic signals and which drives the gearshift cylinders Depending on the system the electrical control signals may e directly from a driveroperated shift level or from an intermediate electronic control The simplest system is remote shifting in which merely the mechanical linkage is replaced In this case the shift lever merely provides electrical signals which energize the pneumatic valves directly or indirectly via control electronics Driveaway and clutch operation are the same as with a manually shifted transmissionThis system can also be bined with a shiftremendation facility The advantages are 1easier shifting 2simple installation no linkage 3safeguard against overrunning of engine 2Semiautomatic System Driveaway Device To further relieve the driver the remoteshift transmission can be bined with an automatic driveaway device There is no clutch pedal the driver simply selects the gears 3Fully Automatic System Transmission and driveaway device are fully automatic The driver control is a levertype or pushbutton switch With the aid of a manual position and buttons the driver is able to override the automatic system The automatic control of a multigear transmission requires a plex shifting strategy It is not sufficient to select the gears in accordance with fixed shift patterns The instantaneous tractive resistance must be taken into account in order to harmonize the criteria of driveability and fuel economy This is possible only by means of microputer control Depending on the type of shift synchronization is automatically assisted by brief opening or closing of the throttle The advantages are optimum fuel consumption thanks to putercontrolled automatic shifting reduced burden on the driver high degree of safety for driver and vehicle Conti