SAEJ2657胎压产品标准图文Word文件下载.docx

SAEJ2657胎压产品标准图文Word文件下载.docx

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TOPLACEADOCUMENTORDER:

Tel:

877-606-7323（insideUSAandCanada

Tel:

724-776-4970（outsideUSA

Fax:

724-776-0790

2.References

2.1ApplicableDocuments

Thefollowingpublicationsformapartofthisrecommendedpracticetotheextentspecifiedherein.Unlessotherwisespecified,thelatestissueofSAEpublicationsshallapply.

2.1.1SAEPUBLICATIONS

AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001,www.sae.org

SAEJ551/1—PerformanceLevelsandMethodsofMeasurementsofElectromagneticRadiationfromVehiclesandDevices（60Hzto18GHz

SAEJ1211—RecommendedEnvironmentalPracticesforElectronicEquipmentDesign

SAEJ1113/1—ElectromagneticCompatibilityMeasurementProceduresandlimitsforComponentsofVehicles,Boats（upto15m,andMachines（ExceptAircraft（50Hzto18GHz

SAEJ1113/2—ElectromagneticCompatibilityMeasurementProceduresandLimitsforVehicleComponents（ExceptAircraft—ConductedImmunity,30Hzto250kHz—AllLeads

SAEJ1113/3—ConductedImmunity,250kHzto5000MHz,DirectInjectionofRadioFrequency（RFPower

SAEJ1113/4—ImmunitytoRadiatedElectromagneticFields—BulkCurrentInjection（BCIMethod

SAEJ1113/11—ImmunitytoConductedTransientsonPowerLeads

SAEJ1113/12—ElectricalInterferencebyConductionandCoupling—CouplingClampandChatteringRelay

SAEJ1113/13—ElectromagneticCompatibilityMeasurementProcedureforVehicleComponents—Part13—ImmunitytoElectrostaticDischarge

SAEJ1113/21—ElectromagneticCompatibilityMeasurementProcedureforVehicleComponents—Part21—ImmunitytoElectromagneticFields,10kHzto18GHz,Absorber-LinedChamber

SAEJ1113/22—ElectromagneticCompatibilityMeasurementProcedureforVehicleComponents—Part22—ImmunitytoRadiatedMagneticFieldsfromPowerLines

SAEJ1113/24—ImmunitytoRadiatedElectromagneticFields;

10kHzto200MHz—CrawfordTEMCelland10kHzto5GHz—WidebandTEMCell

SAEJ1113/25—ElectromagneticCompatibilityMeasurementProcedureforVehicleComponents—ImmunitytoRadiatedElectromagneticFields,10kHzto1000MHz-Tri-PlateLineMethod

SAEJ1113/26—ElectromagneticCompatibilityMeasurementProcedureforVehicleComponents—ImmunitytoACPowerLineElectricFields

SAEJ1113/27—ElectromagneticCompatibilityMeasurementsProcedureforVehicleComponents—Part27—ImmunitytoRadiatedElectromagneticFields

SAEJ1113/42—ElectromagneticCompatibility—ComponentTestProcedure—Part42—ConductedTransientEmissions

SAEJ2402—RoadVehicles-SymbolsforControls,Indicators,andTell-Tales

2.1.2ASTMPUBLICATIONS

AvailablefromAmericanSocietyforTestingandMaterials,100BarrHarborDrive,WestConshohocken,PA,19428-2959,www.astm.org

ASTMB117—SaltSpray（FogTesting

--`,,,`,,-`-`,,`,,`,`,,`---

3.2Coldinflationpressure

Tireinflationpressureattheprevailingatmospherictemperaturethatdoesnotincludeanytireinflationpressurebuild-upduetovehicleoperation.

3.3Functionality

Operationwithintheparametersasdefinedbythespecificationofthedeviceundertest.

3.4Grossvehicleweightrating

Thevaluespecifiedbythevehiclemanufacturerasthemaximumloadedweightofasinglevehicle.

3.5Lightlyloaded

Unloadedvehicleweightplus180kg,includingtestdriverandinstrumentation.

3.6Run-flattire

Atire,whichiscapableofrunningacertain,limiteddistanceunderprescribedconditionsintheeventofacompletelossofinflationpressure.Arun-flattireissimilartoaconventionaltireinthatitisinflatedtothecoldinflationpressure.

3.7Testinflationpressure

Thetirepressureatwhichthesystemistobeactivatedtoindicatealowtirepressureconditiononavehicle.

3.8Tireplacard

Aplacard,permanentlyaffixedtothevehicleasrequiredbyFMVSS110.Theplacarddisplays,amongotherinformation,thevehiclemanufacturer'

srecommendedcoldtireinflationpressure.

3.9TirePressureMonitoringSystem

Asystemthatmeasuresthetireinflationpressureoraparameter（sthatadequatelycorrelatestotireinflationpressure.

3.10SymbolsandAbbreviations

DUT—DeviceUnderTest

EMC—ElectromagneticCompatibility

IRI—InternationalRoughnessIndex

p-p—Peak–to-peak

RF—RadioFrequency

TPMS—TirePressureMonitoringSystem

FIGURE1—THERMALCYCLEPROFILE

4.1.3THERMALSHOCK

Inthetire/wheelenvironment,thermalshockcanbeexperiencedwhenavehiclehasrunforaperiodoftimeandthenisexposedtocoldwaterorice,orwhengoingfromagaragetooutsideinextremelycoldclimates.

TheDUTshallwithstandthe100thermalshockcyclesinairaccordingtotheprofileinFigure2.Thetemperatureextremesshouldbethosedeterminedinsection4.1.1.Thetimebetweentransitionsis30minutesandthetransitiontimebetweeneachtemperatureshallbelessthan2minutes.

FIGURE2—THERMALSHOCKPROFILE

4.1.4EXTREMETEMPERATURE

Therecouldbeisolatedconditionsinwhichthetemperaturewithinthetire/wheelenvironmentcanspikehigherthantheoperationaltemperaturesofsection4.1.1.Extremetemperatureisoneofthemainfactorsinprematurefailureinoneormorecomponents,e.g.lossofbatterylife.Itisrecommendedthatthistestbeperformedpriortothermalcycleandthermalshocktests.

FIGURE3—LOWTIRE

AgraphicsymbolwithinclearviewofthedriverasshowninFigure4.Colorshallbeyellow.

Thissymbolmustbeusedifindividualtirelocationisspecified

FIGURE4—LOWTIREBYLOCATION

Analphabeticindicationincludingthewords“LOWTIRE.”Thetextorbackgroundmustbe

Theindicatorshallbetesteduponignitiononforintegrity.Additionalalphanumericdisplayandsymbolsmaybeprovided.AnaudiblewarningdevicemaybeusedinadditiontooneofthevisualindicatorsKnownsystemfailuresshouldbeindicatedtothedriver.

SAEJ2657IssuedDEC20044.2.3.1SpeedTPMSshouldfunctionforvehiclespeedsbetween24km/handthemaximumspeedofthevehicle.4.2.3.2SurfacesTPMSshouldfunctiononallroadsurfaces.4.2.3.3ManeuversTPMSshouldfunctionduringalldrivingmaneuvers.4.2.3.4LoadingandTowingTPMSshouldfunctionproperlyforloadingandtowingconditionswithinvehiclemanufacturers’recommendedlimits.4.2.3.5EMCTPMSshouldmeetrequirementsofaClassBsystem,asdefinedintheSAEJ551-1andapplicableSAEJ1113documents.PerSAEJ551-1,aClassBsystemisdescribedas:

“Anyfunctionthatenhances,butisnotessentialtotheoperationorcontrolofthevehicle.”4.2.3.6TemperatureTPMSshallfunctionproperlyforvehicleambienttemperaturesrangingfrom-40°

Cto55°

C.4.2.4PERFORMANCEGUIDELINESThissectiondefinestheoverallsystemperformanceofaTPMS.4.2.4.1DynamicResponse4.2.4.2NumberofUnder-InflatedTiresTPMSshalldetecttheunder-inflationofanytireinstalledonthevehicle.4.2.4.3Calibration/ResettingFunctionATPMSmayrequirethedrivertoberesponsibleto“reset”or“recalibrate”thesystem.TheTPMSshouldbedesignedtocompletetheresetorcalibrationfunctionasquicklyaspossible.CopyrightSAEInternationalProvidedbyIHSunderlicensewithSAENoreproductionornetworkingpermittedwithoutlicensefromIHS-11NotforResale--`,,,`,,-`-`,,`,,`,`,,`---UndertheconditionsdetailedinSection4.2.3,whenatirereachesthetestinflationpressure,theTPMSshallindicateanunder-inflatedconditioninlessthan10minutes.

SAEJ2657IssuedDEC20044.2.4.4TireandWheelCompatibilityTheTPMSshallbeabletofunctionproperlywhenanyofthevehicle'

soriginaltiresarereplacedwithanytirerecommendedforuseonthevehiclebythevehiclemanufacturer.TheTPMSshallfunctionproperlyonanyofthevehicle'

soriginalequipmentTPMSwheels.4.2.4.5SpareTireFunctionalityTPMSisnotrequiredtofunctionduringvehicleoperationwithasparetiremountedtoanyvehiclewheelposition.Thesparetireisnotrequiredtobemonitored.4.2.5TESTPROCEDURES--`,,,`,,-`-`,,`,,`,`,,`---Thesetestsaretobecarriedoutonadry,pavedroadway.Note,thatanypressuremeasurementsmadewithagaugedevicemayneedtobecompensatedforbarometricpressure.a.Loadthevehicletothelightlyloadedcondition.Thevehicleshallremainstationaryforaminimumperiodofonehourshadedfromanyheatsource/sunlight.Adjustthevehicle'

stirestothevehicle'

stireplacardcoldinflationpressure.b.Withthevehiclestationaryandthekeylockingsysteminthe"

Lock"

or"

Off"

position,turnthekeylockingsystemtothe"

On"

Run"

position.TheTPMSmustperformacheckoftheindicatorasspecifiedinparagraph4.2.1ofthisdocument.c.Ifapplicable,manuallyresettheTPMSinaccordancewiththeinstructionsspecifiedinthevehicleowner'

smanual.d.Deflateanycombinationofonetofourtiresuntilthedeflatedtire（sis（areat7kPabelowthetestinflationpressure.e.Drivethevehicleatanyspeedbetween50and100km/handachieve50km/hwithin10seconds.TheTPMSindicatormustilluminatewithin10minutesafterthe