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1、ENGINEERINGTestProcedureGMN9543STANDARDSQRDPassengerVehicleGeneralDurabilityDuetotheabbreviatednatureofthistestproce-1Introductiondure,thelessdamagingandoftentime-consuminginputsaregreatlyreducedorelimi-Note:Nothinginthisproceduresupersedesap-nated.Inaddition,thistestdoesnotenc
2、ompassplicablelawsandregulationsunlessaspecificallknowncustomerusagetreatments.Someofexemptionhasbeenobtained.thelimitationsareduetoacceleratedusageandNote:InthereisaconflictbetweentheEnglishsomeareduetotheconstraintsoftheenviron-anddomesticlanguage,theEnglishlanguagementattheM
3、ilfordProvingGround.Ifmorerig-shalltakeprecedence.orousexposuretouniquecustomerusage1.1Purpose.Toprovidealimiteddurabilityandtreatmentsisdesired,otherspecializedtestingreliabilityperformanceevaluationofapassengershouldbeconsideredaspartofthevehicletestvehicleinaseverecustomeren
4、vironment.plan.Someconsiderationsshouldbegivento1.2Foreword.thefollowing:1.2.1TestCorrelation.ThisdurabilitytestTrailertowingGMN9815specificationisintendedtoprovideawidespec-ColdweatherexposureGMN9811trumofvehicleinputsinordertocauseinterfaceHotweatherexposureGMN9807issuestoocc
5、ur.Someselectedinputsarerep-LowusageR-15-69resentativeof100000milesofoperationofagreaterthanaverageseveritycustomer.OtherOtheraspectsofvehicleusagethatarenotsuf-inputsrepresentamuchlowerseverity,butareficientlyaddressedinthistestandshouldalsoincludedtohelpidentifyperformance/pl
6、easabilitybeconsideredduringthedevelopmentprocessanddurabilityissuesthroughoutthetargetlifeofinclude:thevehicle.•Appropriatetemperatureaging(thermalcy-Inaddition,thistestprovidesexposureofthecling)ofcomponents-brakes,enginecon-vehicletoageneralcorrosionenvironmenttrols,transmis
7、sion,hoses,seals,etc.equivalenttofive(5)yearsofoperationinthe•Chemicaldegradation-aging,acidrain,birdNortheasternUnitedStatesandinSoutherndroppings,ultravioletradiation,dustexpo-Canada.sure,etc.Note:Notallcorrosionmechanismsareaccel-•Seatandseatrestraintusage-normalweareratedto
8、thesamedegree.andtearofinteriorpassengerandcargoar-1.2
