丰田A341E自动变速器的故障诊断与排除毕业论文

学院丰田A341E自动变速器的故障诊断与排除论文题目：丰田A341E自动变速器的故障诊断与排除学生姓名：学号：专业：年级：指导教师：教务处制I目录摘要...........................................................................................................................III1前言...........................................................................................................................12概述...........................................................................................................................22.1自动变速器的发展.............................................................................................22.2丰田自动变速器的概述.....................................................................................32.3自动变速器的组成.............................................................................................43丰田A341E自动变速器的结构与工作原理...........................................................53.1液力变矩器的工作原理.....................................................................................53.2行星齿轮变速器的组成.....................................................................................63.3控制机构的组成功用与工作原理.....................................................................73.4丰田A141E行星齿轮变速器档位传递路线....................................................84丰田A341E自动变速器的性能实验.....................................................................114.1失速试验...........................................................................................................114.2时滞试验...........................................................................................................124.3油压试验...........................................................................................................134.4道路试验...........................................................................................................135丰田A341E自动变速器的故障诊断.....................................................................145.1自诊断系统.......................................................................................................145.2常见故障分析...................................................................................................155.2.1汽车不能行驶故障.....................................................................................155.2.2打滑故障.....................................................................................................165.2.3换挡冲击过大故障的诊断.........................................................................185.2.4不能升挡故障的诊断.................................................................................205.2.5无前进挡故障的诊断.................................................................................225.2.6无倒挡故障的诊断.....................................................................................23II5.2.7跳挡故障的诊断.........................................................................................235.2.8无发动机制动故障的诊断.........................................................................255.2.9不能强制降挡故障的诊断.........................................................................265.2.10液压油易变质故障的诊断.......................................................................285.3丰田A341E自动变速器的案例......................................................................295.3.1案例分析一皇冠3.0L轿车自动变速器升挡太迟.................................295.3.2案例分析二O/D指示灯常亮，自动变速器换挡冲击...........................315.3.3案例分析三凌志400轿车换挡冲击过大...............................................33结论.............................................................................................................................37谢辞.............................................................................................................................38参考文献.....................................................................................................................39III丰田A341E自动变速器的故障诊断与排除摘要随着汽车行驶里程的增加，自动变速器的技术性能会逐渐下降，容易产生故障，对行驶性、安全性和排放都有很大的影响。如果不及时地进行检修，损坏程度就会不断加重，甚至导致自动变速器重要零件的严重损坏，失去修理的价值，最后只能更换总成。因此，对自动变速器故障，应及时进行检修，切忌不可带故障运行，以免造成更大的损坏。本文主要阐述丰田A341E自动变速器的工作原理与常见故障诊断和检修方法，并通过具体的实例对丰田A341E自动变速器检测和维修方法进行了探讨。关键词：自动变速器；故障；诊断IIMalfunctionDiagnosisAndRepairOfToyotaA341EAutomaticTransmissionAbstractAuthor：Tutor：Withtheincreasingofanautomobilerunningmileage,automatictransmissionofworkingperformancewillgraduallydeclineinfailure，andsteeringperformance,safety,andemissionswillbegreatlyaffected.Ifanautomatictransmissionwithmalfunctionisnotrepairintime,thedamageofitwillcontinuetoincrease,orevenresultinseriousdamagetosomeimportantparts,thelossofrepairvalueisoccur,justthereplacementoftheautomatictransmissionassembly.Therefore,automatictransmissionrepair,maintenanceshouldbetimely,mustnotrunwithmalfunctioninordertoavoidgreaterdamage.Thispaperdescribedtheworkingprincipleofautomatictransmissionandthemaintenanceideasofitscommonfaultdiagnosisarelisted.ThewayofautomatictransmissionisputforwardinaccordancewithdiagnostictestingandmaintenancebytwoexamplesfordiagnosisandrepaironToyotaA341Eautomatictransmission.Keywords:automatictransmission;malfunction;diagnosis西华大学应用型自学考试毕业设计（论文）11前言自动变速器在汽车上的运用是一种发展趋势，装用自动变速器的轿车比例在近几年迅速提高。与传统的手动变速器相比，自动变速器结构复杂，类型较多，它集机械、液压