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1、NorthAmericanENGINEERINGTestProcedureGMN0394TPSTANDARDS(Book)Title:BrakeComponentPanicBrakeDurability1Introduction1.4.3Applysystem–consistsofbrakepedal,mastercylinder,andbrakelines.Note:Nothinginthisproceduresupercedesapplicablelawsandregulationsunlessaspecificexemptionh
2、asbeenobtained.2ReferencesNote:IfthereisaconflictbetweentheEnglishNote:Onlythelatestapprovedstandardsareanddomesticlanguage,theEnglishlanguageapplicableunlessotherwisespecified.shalltakeprecedence.2.1Normative.1.1Purpose.2.2GM.Thepurposeofthistestistodeterminetheeffectof
3、impactbrakingonthebrakesystemcomponents.2.3Additional.1.2Foreword.Thistesttypicallywillrunbacktobackwiththe3ResourcesBelgianRollsBrakingTest(Procedure0433).Acompletesuspensionunitisrequiredsothe3.1Facilities.samefixturescanbeusedforbothtests.The3.1.1StructuralTestLaborat
4、oryimpactbrakingwillbeachievedbysimulatinga3.1.2Bedplate3050mmx6100mm(10ftxpanicbrakeapplication.Thiswillbedefinedby20ft).abrakelinehydraulicpressureof1800psiachievedinlessthan0.2seconds.3.2Equipment.3.2.1Wheelspinnercapableofrotatingthe1.3Applicability.tireandwheelassem
5、bly,mountedin1.3.1Thisprocedureappliestovehiclesvehicleposition,toaspeedof97kphequippedwithhydraulicbrakes,front(60mph).andrear.3.2.2Panicbrakeloadingdevicewithfoot1.3.2Thisprocedureexcludesthebrakeswitchcapableofapplyingahydraulicapplysystem.pressurerisefrom0to1800psiwi
6、thin0.2seconds.Wheelrpmmeasuring1.4Definitions.devicetomeasurewheelspeed.i.e.1.4.1Frontbrakes–consistsofsteeringmagneticpickupwithfrequencytoDCknuckleandhubassembly,whichconverter.includessteeringknuckle,hub,disc3.2.3Anglestandswithadjustablefixturing,caliper,andbrakepad
7、s.toholdacompletebrakeassembly1.4.2Rearbrakes–consistsofreardrum(includingknuckle,balljoints,tireandandrearbrakeassemblyincludingwheelforfrontorrearbrakesystem,backingplate,wheelcylinder,brakereardrumflangeplate,tire,andwheelshoes,selfadjustmechanism,andforrear).Itispref
8、erabletomountthemiscellaneoussprings.Ifdiscbrakebrakeassembliesintheactualsystem,includesknuckle,hub,di
