jaso c- 英文版 乘用车——行车制动器道路试验规程

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1、JASOC402-1999英文版乘用车——行车制动器道路试验规程JAPANESEAUTOMOBILESTANDARDJASOC402:1999Passengercars-Servicebrakeroadtestprocedures1.ScopeThisStandardspecifiesroadtestproceduresforservicebrakesforpassengercarsoperatedundernormalconditions.ThisStandarddoesnotapplytotw

2、o-wheeledvehicles.2.ApplicablePublicationsThefollowingpublicationsformapartofthisStandardtotheextentspecifiedherein.Thelatestissueofallpublicationsshallapply.JISDO210JASOC428GeneralRulesofBrakeTestMethodofAutomobilesandMotorcyclesParkingBrakeTestProce

3、dure3.DefinitionsThedefinitionsofmaintermsusedinthisStandardconformto2(DefinitionofTerms)ofJISDO210andthefollowing.a)lnitialBrakeTemperatureThevaluereadwithin15secondsbeforethestartofbrakeapplication.Wherespecified,theinitialbraketemperatureshallbethe

4、highestofthemeanvaluesforeachwheelmeasuredperaxle.4.TestConditions4.IVehicleCIassificationTestvehiclesareclassifiedbynominalmaximumspeedandconformtotheprovisionsofJISDO210CategoryPIOver140km/hCategoryP2CategoryP39lkmlhtoIlOkm/hCategoryP490kmlhandunder

5、111km/hto140kmlh4.2VehicleConditionTestvehiclesshallconformto4.1(ConditionofVehicles)ofJISDO2104.3ConditionofBrakePartsEachpartofthebrakingdeviceshallconformto4.3(ConditionofBrake)ofJISD0210.4.4Conformto4.2(RoadSurfaceandWeatherConditions)ofJISD0210.4

6、.5TemperatureMeasurementBraketemperatureshallbemeasuredasspecifiedin6(TemperatureMeasurement)ofJISD0210.RoadSurfaceandWeatherConditions5.TestProcedures5.1BrakingOperationa)Brakingoperationshallbeperformedwithacontinuouspedalforcenotexceeding500Nuntilt

7、hevehiclecomestoacompletestop.b)Inbrakingoperationswithconstantbrakingdeceleration,whenthedesignateddecelerationcannotbeattainedafterpedalforcereaches500N,brakingoperationshallbeperformedwithpedalforceof500N.c)Brakingshallbeinitiatedwhenthevehicleisat

8、thecenterofa3.5mwidelane,andthepostureofthe5.2TestItemsandSequencea)Preburnishchecktestvehicleshallbecontrolledsothatnopartofthevehicleleavesthelane.InitialbrakingspeedInitialbraketemperatureBrakingoperation50km/horless80°CorlessBrakingdeceler