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1、试析影响客车运行性能的原因（Analysisofthereasonsaffectingtheperformanceofbuses）Withthepassengertrainspeedincreasing,passengercarsgraduallyexposedthelongitudinalimpulseintensified,decreasecomfort,acceleratecouplerwearproblems.Becausethepassengercarvolumeless,repairofvehicleaccessoriesisnotformed,justtotrain
2、inspectionaccordingtotherelevantfactoryrepairprocedures,thatistobereplacedover.Butwiththerapidincreaseofpassengercarofpassengercarmaintenance,maintenancecostsalsoincreasedrapidly,thepassengercarmanufacturers,vehiclemaintenancedepartmentreactedstrongly.Manypassengersonthevehicledynamicperforma
3、nceviews,especiallytheproblemoflongitudinalimpulsetrain.Therefore,researchoftheMinistryofRailwayTransportBureauandotherrelevantdepartmentsspecialproject,findsthecausesthataffecttheoperationperformanceofthepassengertrain,andonthepartofthesolution.Therefore,howtosolvethehighspeedpassengertrainl
4、ongitudinalimpulseintensified,acceleratethecouplerwearproblemhasbecomeapressingmatterofthemoment.1.trainlongitudinalimpulsecurrentAfterseveralrailwayspeed,somekeypartsofpassengercarhasbeengreatlydeveloped,butthecouplerbufferdeviceuntil2001changedlittle.25KtrainisstillusingtheNo.15couplerwithG
5、1bufferhookbufferdevice.No.15couplercouplingduetothelargegap,gapofeachsectionofthetraintothecumulativeeffectof25Ktypetrainduringoperationofthelongitudinalimpulse;G1bufferperformancecannotcompletelymeetthespeedrequirements,duringnormaloperation,basicallydonotabsorbenergy,resultinginarigidcolli
6、sionbetweenthecoupler,causedbythetrainlongitudinalimpulseintensified.Inthiscase,thelongitudinalimpulseproblembecomesanimportantfactoraffectingthestabilityoftherunningspeedofpassengertrain.Therealtimedetectionofthedataqualityofoperationof25Ktypetrainindifferentoperationconditionsofdifferentveh
7、iclesandequipment,thediscoveryof25Ktypetrainlongitudinalimpulseprobabilityrelativetotheother25carstobesmall,butgrewupinthetrainoperationspeed,acceleration,brakingoraislefork,sloperoadisanimpulseinMay,sometimesafterafewminutesforseveraltimesor
