SAE j1211v001汽车电器试验标准轿车

SAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.QUESTIONSREGARDINGTHISDOCUMENT:[phone]FAX:[phone]TOPLACEADOCUMENTORDER;[phone]FAX:[phone]Copyright1978SocietyofAutomotiveEngineers,Inc.Allrightsreserved.PrintedinU.S.A.SURFACEVEHICLE400CommonwealthDrive,Warrendale,PA15096-0001RECOMMENDEDPRACTICESubmittedforrecognitionasanAmericanNationalStandardJ1211REV.NOV78Issued1978-06Revised1978-11SupersedingJ1211JUN78RECOMMENDEDENVIRONMENTALPRACTICESFORELECTRONICEQUIPMENTDESIGNForeword—ThisDocumenthasnotchangedotherthantoputitintothenewSAETechnicalStandardsBoardFormat.1.Purpose—Thisguidelineisintendedtoaidthedesignerofautomotiveelectronicsystemsandcomponentsbyprovidingmaterialthatmaybeusedtodevelopenvironmentaldesigngoals.1.1Scope—Theclimatic,dynamic,andelectricalenvironmentsfromnaturalandvehicle-inducedsourcesthatinfluencetheperformanceandreliabilityofautomotiveelectronicequipmentareincluded.Testmethodsthatcanbeusedtosimulatetheseenvironmentalconditionsarealsoincludedinthisdocument.Theinformationisapplicabletovehiclesthatmeetallthefollowingconditionsandareoperatedonroadways:1.1.1Frontenginerearwheeldrivevehicles.1.1.2Vehicleswithreciprocatinggasolineengines.1.1.3Coupe,sedan,andhardtopvehicles.Partoftheinformationcontainedhereinisnotaffectedbytheaboveconditionsandhasmoreuniversalapplication.Carefulanalysisisnecessaryinthesecasestodetermineapplicability.2.References2.1ApplicablePublications—Thefollowingpublicationsformapartofthespecificationtotheextentspecifiedherein.UnlessotherwiseindicatedthelatestrevisionofSAEpublicationsshallapply.2.1.1SAEPUBLICATIONS—AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001.SAEJ400JUL68—RecommendedPracticeTestforChipResistanceofSurfaceCoatingsSAEJ726b—AirCleanerTestCodeSAEJ1113a—ElectromagneticSusceptibilityProceduresforVehicleComponents(ExceptAircraft)(June,1978)Paper740017—O.T.McCarter,“EnvironmentalGuidelinesfortheDesignerofAutomotiveElectronicComponents”(PresentedatSAEAutomotiveEngineeringCongress,Detroit,March1974)Paper730045—G.B.Andrews,“ControloftheAutomotiveElectricalEnvironment”(PresentedattheSAEAutomotiveEngineeringCongress,Detroit,January1973)SAEJ1211RevisedNOV78-2-2.1.2OTHERPUBLICATIONMotorolaCER-114—O.T.McCarter,“EnvironmentalGuidelinesfortheDesignerofAutomotiveElectronicComponents”(1973)3.Application3.1EnvironmentalDataandTestMethodValidity—TheinformationincludedinthefollowingsectionsisbasedupontestresultsachievedbymajorNorthAmericanautomobilemanufacturersandautomobileoriginalequipmentsuppliers.Operatingextremesweremeasuredattestinstallationsnormallyusedbymanufacturerstosimulateenvironmentalextremesforvehiclesandoriginalequipmentcomponents.Theyareofferedasadesignstartingpoint.Generally,theycannotbeuseddirectlyasasetofoperatingspecificationsbecausesomeenvironmentalconditionsmaychangesignificantlywithrelativelyminorphysicallocationchanges.Thisisparticularlytrueofvibration,enginecompartmenttemperature,andelectromagneticcompatibility.Actualmeasurementsshouldbemadeasearlyaspracticaltoverifythesepreliminarydesignbaselines.Theproposedtestmethodsareeithercurrentlyusedforlaboratorysimulationorareconsideredtobearealisticapproachtoenvironmentaldesignvalidation.Theyarenotintendedtoreplaceactualoperationaltestsunderadverseconditions.Therecommendedmethods,however,describestandardcyclesforeachtypeoftest.Thedesignermustspecifythenumberofcyclesoverwhichtheequipmentshouldbetested.Thenumberofcycleswillvarydependinguponequipment,location,andfunction.Whilethestandardtestcycleisrepresentativeofanactualshorttermenvironmentalcycle,noattempthasbeenmadetoequatethiscycletoanaccelerationfactorforreliabilityordurability.Theseconsiderationsarebeyondthescopeofthisguideline.3.2OrganizationofTestMethodsandEnvironmentalExtremesInformation—ThedatapresentedinthisdocumentiscontainedinSections4and5.Section4,EnvironmentalFactorsandTestMethods,describesthe11majorcharacteristicsoftheexpectedenvironmentthathaveanimpactontheperformanceandreliabilityofautomotiveelectronicsystems.Thesedescriptionsaretitled:3.2.1Temperature.3.2.2Humidity.3.2.3SaltSprayAtmosphere.3.2.4ImmersionandSplash(Water,Chemicals,andOils).3.2.5Dust,Sand,andGravelBombardment.3.2.6Altitude.3.2.7MechanicalVibration.3.2.8MechanicalShock.3.2.9FactorsAffectingtheAutomotiveElectricalEnvironment.3.2.10SteadyStateElectricalCharacteristics.SAEJ1211RevisedNOV78-3-3.2.11Transient,Noise,andElectrostaticCharacteristics.Theyareorganizedtocoverthreefacetsofeachfactor:a.Definitionofthefactor.b.Descriptionofitseffectoncontrol,performance,andlongtermreliability.c.Areviewofproposedtestmethodsforsimulatingenvironmentalstress.Section5,EnvironmentalExtremesby