GMN 5233TP-2002 Inertia Dynamometer Brake Output Versus Temperature (BSL-033)

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1、NorthAmericanENGINEERINGTestProcedureGMN5233TPSTANDARDSInertiaDynamometerBrakeOutputVersusTemperature(BSL-033)1Introduction1.4.2AverageApparentFriction.TheaverageoftheinstantaneousNote:Nothinginthisproceduresupersedesfrictionmeasuredduringthesteadyapplicablelawsandregulationsunlessa

2、statepressureportionofthebrakingspecificexemptionhasbeenobtained.event.Thisexcludestheinitial10%ofthestopasthedynamometerspeedNote:IfthereisaconflictbetweentheEnglishapproacheszero.anddomesticlanguage,theEnglishlanguageshalltakeprecedence.1.4.3CorrectedPressureControl.Dynamometerpre

3、ssurecontrol1.1Purpose.algorithmthatcalculatestheaverageThisproceduredocumentsaninertiadecelerationattainedduringapressuredynamometertestusedtomeasureapplyandcorrectsthepressureapplybrakeoutputoverarangeofbrakeforthenextstoptoattainadesiredtemperatures.decelerationlevel.1.2Foreword.

4、1.4.4InitialBrakeTemperature(IBT).ThisprocedureisintendedtoquantifyThebrakerotortemperature(C)atthebrakeoutputoverarangeofbrakestartofthebrakingevent.operatingtemperatures.Thetemperaturerangeis-18Cto375C1.4.5MeanAverageFriction.includingoutputaftera2hoursoakatThemeanoftheaveragefric

5、tionfromambient.anumberofbrakingevents.1.3Applicability.2ReferenceThisprocedureisapplicabletoallpassengercarandlighttruckbrakeNote:Onlythelatestapprovedstandardsarecorners.applicableunlessotherwisespecified.1.4Definitions.2.1Normative.1.4.1ApparentFriction.2.2GM.Thebrakingtorquedivi

6、dedbytheappliedhydraulicforcedividedbythe2.3Additional.effectiveradius.Hydraulicforceisthehydraulicpressuretimestheeffectivepistonareatimes2.Effectiveradiusis3Resourcestherotorradiusminusthepistonradius.3.1Facilities.MilfordProvingGroundBrakeSystemsLab(BSL)inertiabrakedynamometerore

7、quivalenttestfacilityshallbeused.©CopyrightDateGeneralMotorsCorporationAllRightsReserved-GMConfidential-OriginatedDate:May7,2001GMN5233TPRevisedDate:April,2002ApprovalDate:April,2002Page1of5GMNorthAmericanENGINEERINGSTANDARDGMN5233TP3.2Equipment.4.1.2Theassembledrotorlateralrunout(L

8、RO)shallnotexceed0.