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《GMN 4422TP-2001 2WD Light Truck Limited Durability》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、NorthAmericanTestProcedureGMN4422TPENGINEERINGSTANDARDS(Book)2WDLightTruckLimitedDurabilityconsuminginputsaregreatlyreducedor1Introductioneliminated.Inaddition,thistestdoesnot1.1Purpose.encompassallknowncustomerusagetreatments.SomeofthelimitationsareduetoToprovidealimiteddurabili
2、tyandreliabilityacceleratedusageandsomeareduetotheperformanceevaluationofatwo-wheeldrivelightconstraintsoftheenvironmentattheMilfordtruckinaseverecustomerenvironment.ProvingGround.Ifmorerigorousexposureto1.2Foreword.uniquecustomerusagetreatmentsisdesired,otherspecializedtestingsh
3、ouldbeconsidered1.2.1aspartofthevehicletestplan.SomeNOTE:Thistestprocedureisbasedonhistoricconsiderationsshouldbegiventothefollowing:pickuptruckusageandisfeltbytheauthorstoTrailertowingR-15-31besupersededbyothertruckdurabilityroadtests.PleasecontacttheauthorsofthistestR-15-115pri
4、ortoestablishinganewvehicleprogramColdweatherexposureGMN9811TPusingthistestforvalidationpurposes.HotweatherexposureGMN9807TPThisdurabilitytestspecificationisintendedtoLowusageR-15-69provideawidespectrumofvehicleinputsinordertocauseinterfaceissuestooccur.SomeOtheraspectsofvehicleu
5、sagethatarenotselectedinputsarerepresentativeof125,000sufficientlyaddressedinthistestandshouldmilesofoperationofagreaterthanaveragealsobeconsideredduringthedevelopmentseveritycustomer.Otherinputsrepresentaprocessinclude:muchlowerseverity,butareincludedtohelpAppropriatetemperature
6、aging(thermalcycling)identifyperformance/pleasabilityanddurabilityofcomponents-brakes,enginecontrols,issuesthroughoutthetargetlifeofthevehicle.transmission,hoses,seals,etc.Inaddition,thistestprovidesexposureoftheChemicaldegradation-aging,acidrain,birdvehicletoageneralcorrosionenv
7、ironmentdroppings,ultravioletradiation,dustexposure,equivalenttofiveyearsofoperationintheetc.NortheasternUnitedStatesandinSouthernSeatandseatrestraintusage-normalwearandCanada.tearofinteriorpassengerandcargoareas.NOTE:NotallcorrosionmechanismsareCurbimpacts,scuffing,orpushaways(p
8、rimarilyacceleratedtothesamedegree.parki
