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1、汽车自动变速器常见故障的检测诊断与机理研究33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,所以本文针对汽车自动变速器常见故障进行研究。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
2、、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;机理分析;常见故障;检测诊断33AbstractWiththescientificandtechnologicalprogress,carshavebecomethemainstreamoftheworld,theinventionof
3、carsbringsmankindgreatconvenience,thehandlingandcomforthasalsobeengraduallyimproving,andthemanualtransmissionhasbeengraduallyreplacedbyautomatictransmission.Automatictransmissioncanberepeatedfortheacceleration,deceleration,speedtransmission,andotherfunctions,thespeedwithsmoo
4、th,lightandotheradvantagesofdriving.Butcompanedwiththetraditionalmanualtransmission,thereareissuessuchascomplexstructures,detection,diagnosisanddifficultmaintenance,sothisstudyisoncommon-vehicleautomatictransmissionfailure.Thispaperdiscussesthedevelopmentoftheautomatictransm
5、ission,automatictransmissionandthecomposition,structure,character,principleresearch.Thiswasfollowedbytheautomatictransmissiontodetectcommonfaultdiagnosis,themainvehiclecannotbeclosed,slippingautomatictransmission,automatictransmissionabnormalsound.Faultspecificdescriptionoft
6、hephenomenonandpossiblecauseofthemalfunction,adetailedanalysisofthefailuremechanism,automatictransmissionanddynamicperformancetestsusethem,stallanddelaytestpilot,thefaultdiagnosistodetectandaccuratelydeterminefaultlocation.Thenthefailuretoruleoutthepossibility,andtodrawfault
7、diagnosisflowchart.Finally,thescenetocollecttheactualcaseanalysistoprovethatthefaultdetectionaccuracyofdiagnosisandanalysis. Keywords:automatictransmission;mechanismanalysis;commonfault;detectionanddiagnosis33目录第1章绪论11.1自动变速器的发展状况11.2自动变速器的特点2第2章自动变速器的组成及基本原理42.1自动变速器组成42.2自
8、动变速器基本原理4第3章汽车不能行驶故障检测与诊断研究93.1汽车不能行驶的故障现象93.2汽车不能行驶的原因93.3汽车不能行驶的机理分析93.4时