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1、WORLDWIDETestProcedureENGINEERINGLaboratoryGMW7879STANDARDSSqueakandRattleDegradationTestforPassengerCarsandLightTrucks1.3Applicability.Forallpassengercarsandlight1Scopetrucks.Note:Nothinginthistestproceduresupersedesapplicablelawsandregulationsunlessaspecific2Referencesexemp
2、tionhasbeenobtained.Note:OnlythelatestapprovedstandardsareNote:IntheeventofaconflictbetweentheEng-applicableunlessotherwisespecified.lishanddomesticlanguage,theEnglishlanguage2.1ExternalStandards/Specifications.shalltakeprecedence.None.1.1Purpose.Thepurposeofthisprocedureisto
3、evaluatethedeteriorationofvehicleSqueak&2.2GMStandards/Specifications.RattleperformancerelativetovehiclemileageGMW7294R.DU.00.081accumulation.GMW85181.2Foreword.BasisforthistestisthetestreportofthemeasuringgroupNo73401dated27/01/942.3AdditionalReferences.and25/02/94.Theprogra
4、msimulatesamileageAADVKA01AADVKA05of150000kmundercustomerconditions.Thebogeyvariesdependingontheconsideredmodel.Testreports,measuringgroupITDCno73401,Actuallybetween4000kmwiththeOmegaanddatesofissue27/01/94and25/02/947000kmwiththeCorsa/Tigra.Thestresstothevehicleisreachedby:3
5、TestEquipment•maximumpayload(GMB:vehicleloadac-3.1Facilities.ITDCProvingGroundDudenhofen,cordingtoR.DU.00.081)(GMNA:CurbCruzAltaProvingGroundorequivalenttestroute,weight)ortheGMNAMilfordProvingGroundBuilding94•tirepressure(400kPa)(GMNA:Recom-roadsimulators.mendedtirepressure)
6、3.2Equipment.GMNA:•50km/hontheunevenblockroadsofthedurabilitytesttrackcombinedwiththese-•TireCoupledHydraulicRoadSimulator.condshortcutinTestcenterDudenhofen.•ASolarSimulatorcapableofproducingfullGMNAsee5.2.5.spectrumsolarenergyatlevelof1000Thistestcanalsobeperformedusinga4Po
7、st2watts/m,overthesurfaceareaofthewind-HydraulicRoadSimulator.TheroadsimulatorshieldandupperInstrumentPanel.--```,``-`-`,,`,,`,`,,`---sectionofthisprocedureisbasedonNorthAmericanroads.Thefirst80hoftestingrepre-•APyranometertomeasureSolarEnergyatsent40%oftheGMNAexpectedcustome
8、rus-thewindshieldsurface.age,relativetovibrationinput,ortheequivalen
