JASO C448-1980 乘用车——钳盘式制动器台架试验规程

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1、JAPANESEAUTOMOBILESTANDARDJASOC448-80DiscBrakeCaliperBenchTestProcedure-PassengerCar1.Scope4.CommonItemsThisStandardestablishesaservicebrakebenchtest4.1ConditionsofEachElementofBrakingDevicesprocedurefordiscbrakecaliperassemblies(hereafterreferredtoascaliperassemblies)ofpasseng

2、ercars.TheconditionofeachelementofthebrakingdevicesHowever,dynamometertestsonfrictionalcharac-upontestingshallbeasspecifiedinJASOC446teristicsarenotincluded.(GeneralRulesofBrakeofAutomobilesandMotor-cycles),5.3(hereafterreferredtoasproperproducts).Note-Inthisstandard,formulasun

3、itsandnumericalvaluesin{}areinaccordancewiththeInternational4.2TestEquipmentSystemofUnits(SI),andgivenforreferenceonly.Devicesandinstrumentstobeemployedinatestshallbeasfollows,unlessotherwisespecified.2.Purpose(1)ManualpressureactuatingequipmentThepurposeofthisStandardistoestab

4、lishauniformApressureactuatingequipmentistobeusedintestprocedureforcaliperassemblyservicebrakebenchatestinwhichthepressuretothecalipertests.assemblyisappliedmangally,anditshallbecapableofapplyingapressureof140kgf/cm2{13.72MPajormoretothecaliperassembly3.Definitionspercycle(seeF

5、igure1).Themaintermsasusedhereinaredefinedasfollows:Remark-Asindicatedintheenlargedfigure,itwillbeconvenienttoconstructtheequipmentinsuch(1)Fluiddisplacementrequired:Thebrakefluidamannerthatthelevertobleedtheairfromthequantityrequiredtobringuptotheprescribedcaliperassemblycanbe

6、operatedindependentlyfluidpressureinthecylinderboreofcaliperfromtheoperationofpressureactuatinghandle.body.(2)Automaticpressureactuatingequipment(2)Residualtorque:Thetorquetoresisttherota-Apressureactuatingequipmentistobeusedintionofadiscremainedafterthereleaseofatestinwhichthe

7、pressuretothecaliperbrakefluidpressue.assemblyisrepeatedlyandautomatically(3)Padhalf-worncondition:Aconditionwhereapplied,anditshallbecapableofapplyingathethicknessofthefrictionmaterialsexcludingpressureof140kg/cm2{13.72MPa}ormoretothebackingplateofthepadhasbecomethethecalipera

8、ssemblypercycle(seeFigure2).halfofthatofanewpad.(3)Fit