汽車自動變速器原理與故障分析
（汽車維修專業(yè)畢業(yè)論文，全文共12624字，24頁，標準的格式，專業(yè)的分析，推薦下載）
摘要
隨著當今經(jīng)濟的快速發(fā)展，轎車越來越普遍的作為普通的消費品進入百姓家庭。人們在追求享受的同時也越來越在乎汽車的使用經(jīng)濟性和駕駛的簡便性，于是自動變速器在轎車中應運而生，滿足了人們對汽車的舒適性和駕駛的簡便性。
汽車自動變速器包括有級變速器和無級變速器（CVT）兩種。沃爾沃XC90轎車裝配的是自動有級變速器（AT），該變速器與前置前驅發(fā)動機相匹配輸出更強勁的動力。自動變速器主要由液力變矩器、油泵、齒輪變速機構、人機控制系統(tǒng)、閥板5個部分組成。常見的變速器的故障原因有液力變矩器的故障、油泵的故障以及閥體的故障維修。

關鍵詞: 自動變速器：Automatic Transmission
無級變速器：Continuously Variable Transmission
液力變矩器：Hydraulic torque converter
油泵：Pump

ABSTRAC

With the rapid development of economy, cars more and more popular as ordinary consumer goods into people family . People in the pursuit of enjoy and at the same time getting care about car usage economy and driving the simplicity of automatic transmission, then came into being in the car to meet people for the automobile driving comfort and convenience.
Auto automatic transmission include variable transmission and variator (CVT) two kinds. VOLVO XC90 car assembly is automatically have variable transmission (AT), the transmission is matched with lead precursor engine output stronger impetus. Automatic transmission mainly by the hydraulic torque converter, oil pump, gear shifting agency, man-machine control system, the valve plate five parts. Common transmission fault reason has hydraulic torque converter faults, and the body of oil pump failure breakdown maintenance.

目 錄

第一章、自動變速器結構原理.......................................................4
一、自動變速器的組成.......................................... ..............4
二、自動變速器的控制面板.....................................................5
第二章、液力變矩器的結構與工作原理.............................................. 6
一、液力耦合器的結構原理.....................................................6
二、液力變矩器結構原理.......................................................7
第三章、油泵的結構與工作原理 ....................................................7
一、內(nèi)嚙合齒輪泵的結構.......................................................8
二、內(nèi)嚙合齒輪泵的故障原理...................................................8
第四章、齒輪變速機構的結構與工作原理.............................................9
一、概述..................................................... ...............9
二、行星齒輪機構與變速原理...................................................9
三、換擋執(zhí)行機構的結構和故障原理............................................10
第五章、人機控制系統(tǒng) ........................................... ...............12
一、手控閥............................................... ..................12
二、節(jié)氣門閥............................................ ...................13
三、電磁閥........................................... ....... ..............13
第六章、閥體 ................................................ ..................14
一、主調(diào)壓區(qū)................................................ ...............14
二、變矩器調(diào)壓區(qū)............................................... ............14
三、鎖止區(qū).................................................... ............ 14
四、換擋質量改善區(qū)............................................... ..........15
第七章、沃爾沃自動變速器常見故障分析............................................15
案例一、汽車不能行駛.......................................... .............15
案例二、不能升擋........................................ ...................16
總結..................................................... ......................17
參考文獻................................................... ...... .............18
致謝...................................................... .. ..................19