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1、自动变速器的检测与维修石刘南京工业职业技术机械工程学院汽装0711210046[摘要]随着科学技术的进步,汽车已经成为当今世界的主流,汽车的发明给人类带来极大的方便,汽车的操纵性、舒适性也一直在逐渐提高,而手动变速器已经逐渐被自动变速器所取代。自动变速器能进行反复的加速、减速、变速换档等功能,具有变速平滑、驾驶轻便等优点。但是与传统的手动变速器相比,也存在结构复杂、检测、诊断和维修难等问题。本文首先论述了自动变速器的发展情况,然后对自动变速器组成、结构、特点、工作原理进行研究。其次对自动变速器常见故障进行检测诊断研究,主要有汽车不能行驶、自动变速器打滑、自动变速器异响。描述故障具体现象和可能
2、的故障原因,进行详细的故障机理分析,并将自动变速器动态性能试验运用其中,有失速试验和时滞试验,对故障进行检测诊断,准确确定故障部位。进而对故障进行排除,并画出故障诊断流程图。最后通过现场收集实际案例进行分析,证明故障检测诊断分析的正确性。 [关键词]:自动变速器;结构组成;常见故障;检测与维修AbstractWiththescientificandtechnologicalprogress,carshavebecomethemainstreamoftheworld,theinventionofcarsbringsmankindgreatconvenience,thehandlingandco
3、mforthasalsobeengraduallyimproving,andthemanualtransmissionhasbeengraduallyreplacedbyautomatictransmission.Automatictransmissioncanberepeatedfortheacceleration,deceleration,speedtransmission,andotherfunctions,thespeedwithsmooth,lightandotheradvantagesofdriving.Butcompanedwiththetraditionalmanualtra
4、nsmission,thereareissuessuchascomplexstructures,detection,diagnosisanddifficultmaintenance,sothisstudyisoncommon-vehicleautomatictransmissionfailure。Thispaperdiscussesthedevelopmentoftheautomatictransmission,automatictransmissionandthecomposition,structure,character,principleresearch.Thiswasfollowe
5、dbytheautomatictransmissiontodetectcommonfaultdiagnosis,themainvehiclecannotbeclosed,slippingautomatictransmission,automatictransmissionabnormalsound.Faultspecificdescriptionofthephenomenonandpossiblecauseofthemalfunction,adetailedanalysisofthefailuremechanism,automatictransmissionanddynamicperform
6、ancetestsusethem,stallanddelaytestpilot,thefaultdiagnosistodetectandaccuratelydeterminefaultlocation.Thenthefailuretoruleoutthepossibility,andtodrawfaultdiagnosisflowchart.Finally,thescenetocollecttheactualcaseanalysistoprovethatthefaultdetectionaccuracyofdiagnosisandanalysis.[Keywords]:automatictr
7、ansmission;mechanismanalysis;commonfault;detectionanddiagnosis。目录绪论31.自动变速器的概述及分类41.1自动变速器的分类41.2自动变速器的组成及基本工作原理52.自动变速器的常见故障检测与维修72.1自动变速器油液(ATF)变质72.2自动变速器打滑82.3换挡冲击大82.4升档过迟92.5不能升挡102.6升档缓慢112.7.无前进挡122