【正文】
ical 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 . 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. 進而對故障進行排除,并畫出故障診斷流程圖。其次對自動變速器常見故障進行檢測診斷研究,主要有汽車不能行駛、自動變速器打滑、自動變速器異響。但是與傳統(tǒng)的手動變速器相比,也存在結構復雜、檢測、診斷和維修難等問題,所以本文針對汽車自動變速器常見故障進行研究。畢業(yè)設計(論文)摘 要隨著科學技術的進步,汽車已經(jīng)成為當今世界的主流,汽車的發(fā)明給人類帶來極大的方便,汽車的操縱性、舒適性也一直在逐漸提高,而手動變速器已經(jīng)逐漸被自動變速器所取代。自動變速器能進行反復的加速、減速、變速換檔等功能,具有變速平滑、駕駛輕便等優(yōu)點。本文首先論述了自動變速器的發(fā)展情況,然后對自動變速器組成、結構、特點、工作原理進行研究。描述故障具體現(xiàn)象和可能的故障原因,進行詳細的故障機理分析,并將自動變速器動態(tài)性能試驗運用其中,有失速試驗和時滯試驗,對故障進行檢測診斷,準確確定故障部位。最后通過現(xiàn)場收集實際案例進行分析,證明故障檢測診斷分析的正確性。Key words: automatic transmission。 mon fault。中國的汽車工業(yè)雖然起步較晚,但從進入20世紀90年代以來,民族汽車工業(yè)沿著合資引進與獨立開發(fā)相結合的道路。隨著城市車輛密度的加大,自動變速器已逐漸成為汽車的必備裝備,而不僅僅是豪華的標志。早在1908 年, 福特 T 型車最早采用一種兩個速比的自動變速器。從那以后, 自動變速器的構造原理并無大的改變, 但材料技術的進步與潤滑油性能的提高, 使這種變速器的速度比更為豐富。傳統(tǒng)的離合器由一個渦輪轉換器所取代。轉輪式自動變速器存在一個缺點, 即起步加速時令人有一種車輪打滑的感覺, 于是駕車人會猛加油門, 但車速又并不隨即增高。隨著發(fā)動機燃油噴射與點火裝置的不斷完善, 自動變速器也有新的花樣, 如設置了 “運動式” 或 “雪地行駛” 等不同的操控方式, 有的在儀表盤上設有一個印有 S 字母的按鈕, 可以在加速時變得格外迅捷。 更有甚者, 新一代 “隨機應變式” 變速