GMW 14925 Brake Corner Performance Inertia Dynamometerometer

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1、WORLDWIDETestProcedureENGINEERINGGMW14925ChassisSTANDARDSBrakeCornerPerformanceInertiaDynamometer•Dynamometerspeed(kph)1Scope•Brakeapplypressure(kPa)Note:Nothinginthestandardsupersedes•Braketorque(N-m)applicablelawsandregulationsunlessspecific•Brakerot

2、or/drumtemperature(°C)exemptionhasbeenobtained.3•Fluiddisplacement(mm)Note:IntheeventofconflictbetweentheEnglishanddomesticlanguage,theEnglishlanguageshall3.2.3Thefollowingmeasurementsshallbemadetakeprecedence.anddigitallyrecordedat1000HzduringtheParkB

3、rakeandStaticApparentFrictionsections:1.1Purpose.Thisstandardisaninertiadynamometertestproceduretoassessbrake•Dynamometerspeed(rpm)cornerperformanceduringvariousbrake•Brakeapplypressure(kPa)conditions.•Braketorque(N-m)1.2Foreword.Thisprocedureassessesb

4、rake•CableTravel(mm)cornerperformancewithgreen(new)brakes,duringabrakeburnishschedule,withburnished•CableForce(N)brakes,duringvariousFMVSS135conditions,3.3TestVehicle/TestPiece.ProductionduringtheConsumerReportsFadeschedule,andrepresentativebrakecorner

5、hardwareshallbewithpostfadebrakes.Forrearbrakes,parkbrakeusedtoproducethetailstockassembly.performanceisalsoassessed.3.4TestTime.1.3Applicability.ThisprocedureisapplicabletoallpassengercarandlighttruckfrontandreardiscCalendartime:1to2daysanddrumbrakeco

6、rners.Partspreparationtime:2hours2ReferencesSetuptime:2hoursNote:OnlythelatestapprovedstandardsareTesttime:10to24hoursapplicableunlessotherwisespecified.3.5TestRequiredInformation.Notapplicable.2.1ExternalStandards/Specifications.3.6Personnel/Skills.On

7、e(1)techniciantrainedFMVSS135fortheoperationofaninertiabrakedynamometerandtoperformthedutiesdescribedinparagraph42.2GMStandards/Specifications.isrequired.GMW149744Procedure3Resources4.1Preparation.3.1Facilities.MilfordProvingGroundChassis4.1.1Rotorordr

8、umthermocoupleshallbeinstalledComponentDevelopment(CCD)inertiabrakeperGMW14974.dynamometerorequivalenttestfacilityshallbe4.1.2Theassembledcornerlateralrunout(LRO)used.shallnotexceed50micrometers.ThecornerLRO3.2Equipment.shallbemeasuredo