【正文】
于有級(jí)和無級(jí)之間的自動(dòng)變速器。其中液力變扭器是AT最具特點(diǎn)的部件,它由泵輪、渦輪和導(dǎo)輪等構(gòu)件組成,直接輸入發(fā)動(dòng)機(jī)動(dòng)力傳遞扭矩和離合作用。下面讓我們一起來討論一下自動(dòng)變速器的檢測與維修。 detection and diagnosis。[關(guān)鍵詞]:自動(dòng)變速器;結(jié)構(gòu)組成;常見故障;檢測與維修[Abstract] With the scientific and technological progress, cars have bee the mainstream of the world, the invention of cars brings mankind great convenience, the handling and fort has also been gradually improving, and the manual transmission has been gradually replaced by automatic transmission. Automatic transmission can be repeated for the acceleration, deceleration, speed transmission, and other functions, the speed with smooth, light and other advantages of driving. But paned with the traditional manual transmission, there are issues such as plex structures, detection, diagnosis and difficult maintenance,so this study is on monvehicle automatic transmission failure 。描述故障具體現(xiàn)象和可能的故障原因,進(jìn)行詳細(xì)的故障機(jī)理分析,并將自動(dòng)變速器動(dòng)態(tài)性能試驗(yàn)運(yùn)用其中,有失速試驗(yàn)和時(shí)滯試驗(yàn),對故障進(jìn)行檢測診斷,準(zhǔn)確確定故障部位。自動(dòng)變速器能進(jìn)行反復(fù)的加速、減速、變速換檔等功能,具有變速平滑、駕駛輕便等優(yōu)點(diǎn)。但是與傳統(tǒng)的手動(dòng)變速器相比,也存在結(jié)構(gòu)復(fù)雜、檢測、診斷和維修難等問題。進(jìn)而對故障進(jìn)行排除,并畫出故障診斷流程圖。This paper discusses the development of the automatic transmission, automatic transmission and the position, structure, character, principle research. This was followed by the automatic transmission to detect mon fault diagnosis, the main vehicle can not be closed, slipping automatic transmission, automatic transmission abnormal sound. Fault specific description of the phenomenon and possible cause of the malfunction, a detailed analysis of the failure mechanism, automatic transmission and dynamic performance tests use them, stall and delay test pilot, the fault diagnosis to detect and accurately determine fault location. Then the failure to rule out the possibility, and to draw fault diagnosis flow chart. Finally, the scene to collect the actual case analysis to prove that the fault detection accuracy of diagnosis and analysis.[Key words]: automatic transmission。目 錄緒 論 3 4 4 52. 自動(dòng)變速器的常見故障檢測與維修 7 自動(dòng)變速器油液(ATF)變質(zhì) 7 自動(dòng)變速器打滑 8 換擋沖擊大 8 升檔過遲 9 不能升擋 10 升檔緩慢 11. 無前進(jìn)擋 12. 無超速檔 13. 無倒檔 14 頻繁跳擋 14 無發(fā)動(dòng)機(jī)制動(dòng) 15 無鎖定 15 不能強(qiáng)制降擋 163. 自動(dòng)變速器基本檢修案例分析 16 自動(dòng)變速器檢修案例分析 17結(jié) 論 20致 謝 20參考文獻(xiàn) 20緒 論 隨著現(xiàn)代產(chǎn)業(yè)技術(shù)的發(fā)展,中國汽車工業(yè)正在以前所未有的速度迅速發(fā)展。1 自動(dòng)變速器的概述及分類汽車自動(dòng)變速箱常見的有三種型式: 分別是液力自動(dòng)變速箱(簡稱AT)機(jī)械無級(jí)自動(dòng)變速箱(簡稱CVT) 電控機(jī)械自動(dòng)變速箱(簡稱AMT)。液力變矩器的原理:泵輪和渦輪是一對工作組合,它們就好似相對放置的兩臺(tái)風(fēng)扇,一臺(tái)風(fēng)扇吹出的風(fēng)力會(huì)帶動(dòng)另一臺(tái)風(fēng)扇的葉片旋轉(zhuǎn),風(fēng)力成了動(dòng)能傳遞的媒介,如果用液體代替空氣成為傳遞動(dòng)能的媒介,泵輪就會(huì)通過液體帶動(dòng)渦輪旋轉(zhuǎn),再在泵輪和渦輪之間加上導(dǎo)輪,通過反作用力使泵輪和渦輪之間實(shí)現(xiàn)轉(zhuǎn)速差就可以實(shí)現(xiàn)變速變矩了。優(yōu)缺點(diǎn)AT不用離合器換檔,檔位少變化大,連接平穩(wěn),因此操作容易,既給開車人帶來方便,也給坐車人帶來舒適。如果拖運(yùn)故障車,要注意使驅(qū)動(dòng)輪脫離地面,以保護(hù)自動(dòng)變速箱齒輪不受損害。AMT:在機(jī)械變速器(手動(dòng)波)原有基礎(chǔ)上進(jìn)行改造,主要改變手動(dòng)換檔操縱部分?,F(xiàn)代轎車液力變矩器都是由泵輪、渦輪和導(dǎo)輪三個(gè)組成,并設(shè)有鎖定離合器和減震器。齒輪變速器由換擋執(zhí)行機(jī)構(gòu)操縱換擋,實(shí)現(xiàn)不同檔位的傳動(dòng)比。離合器與制動(dòng)器的作用不同的是,離合器用于連接兩個(gè)轉(zhuǎn)的機(jī)構(gòu)并傳遞動(dòng)力,而制動(dòng)器連接的一個(gè)是轉(zhuǎn)動(dòng)機(jī)件,另一個(gè)是固定不動(dòng)的變速器殼體,作用是制動(dòng)轉(zhuǎn)動(dòng)機(jī)件。轉(zhuǎn)鼓隨動(dòng),為油浴多片式。輸入軸和輸出軸轉(zhuǎn)速傳感器S1和S2,對B和C的打滑起監(jiān)控作用,報(bào)以“速比不正?!惫收洗a。這些控制閥起油路的“開關(guān)”作用,控制閥的移動(dòng)使油路開通或