GB17691-20051NationalStandardofthePeople'sRepublicofChinaLimitsandMeasurementMethodsforExhaustPollutantsfromCompressionIgnitionandGasFuelledPositiveIgnitionEnginesofVehicles(III,IV,V)ReplaceofGB17691-2001ReplaceofpartofGB14762-20021.SCOPEThisstandardstipulateslimitsandmeasurementmethodforgaseousandparticulatepollutantsfromexhaustgasofcompressionignition(C.I.)enginesforroadvehicleuseandvehiclesequippedwithC.I.engines,andforgaseouspollutantsfrommotorvehiclesequippedwithpositiveignitionenginesfuelledwithnaturalgas(NG)orliquefiedpetroleumgas(LPG)andsuchengines.ThisstandardappliestotheC.I.engines(includingpositiveignitionenginesfuelledwithgaseousfuel)usedfordrivingmotorvehiclesofcategoriesofM2,M3,N1,N2andN3havingadesignspeedexceeding25km/handvehiclesofcategoriesM1havingatotalmassexceeding3500kg,andtothetypeapproval,theinspectionofconformityofproductionandtheinspectionofconformityofin-servicevehicles.ThisstandarddosenotapplytotheC.I.enginesusedbycategoryN1andM2power−drivenvehicleswhichareapprovedaccordingtoGB18352.3-2005Limitsandmeasurementmethodsforemissionsfromlight-dutyvehicles(III,IV).2.NORMATIVEREFERENCEThefollowingstandardscontainprovisions,which,throughreferenceinthistext,constituteprovisionsofthisstandard.Forundatedreferences,thelatesteditionofthedocumentreferredtoapplies.GB/T15089-1994MotorVehiclesandTrailers—ClassificationGB/T17692MeasurementMethodsofNetPowerforAutomotiveEnginesGB18047AutomotiveCompressedNaturalGasGB18352.3-2005Limitsandmeasurementmethodsforemissionsfromlight-dutyvehicles(III,IV)GB/T19147AutomotiveDieselGB19159AutomotiveLiquefiedPetroleumGas3.TERMSANDDEFINITIONSForthepurposesofthisStandard,followingtermsanddefinitionsapply:3.1exhaustpollutantsmainlyincludegaseouspollutantsandparticulatematters.GB17691-20052Gaseouspollutantsmeancarbonmonoxide(CO),hydrocarbons(HC)(assumingarationofCH1.85fordiesel,CH2.525forLPG,CH2.93forNG(NMHC)andCH4forNG)andoxidesofnitrogen(expressedinnitrogendioxide(NO2)equivalent).Particulatemattersmeananymaterialcollectedonaspecifiedfiltermediumafterdilutingtheexhaustwithcleanfilteredairsothatthetemperaturedoesnotexceed325K(52).3.2vehiclesofcategoriesofM1,M2,M3,N1,N2,andN3accordingtoGB/T15089-2001:vehiclesofcategoryM1refertothoseusedforthecarriageofpassengersandcomprisingnotmorethaneightseatsinadditiontothedriver'sseat.vehiclesofcategoryM2refertothoseusedforthecarriageofpassengers,comprisingmorethaneightseatsinadditiontothedriver'sseat,andhavingamanufacturerdesignedmaximummassnotexceeding5t.vehiclesofcategoryM3refertothoseusedforthecarriageofpassengers,comprisingmorethaneightseatsinadditiontothedriver'sseat,andhavingamanufacturerdesignedmaximummassexceeding5t.vehiclesofcategoryN1refertothoseusedforthecarriageofgoodsandhavingamanufacturerdesignedmaximummassnotexceeding3.5t.vehiclesofcategoryN2refertothoseusedforthecarriageofgoodsandhavingamanufacturerdesignedmaximummassexceeding3.5tbutnotexceeding12t.vehiclesofcategoryN3refertothoseusedforthecarriageofgoodsandhavingamanufacturerdesignedmaximummassexceeding12t.3.3testcyclemeansasequenceoftestpointseachwithadefinedspeedandtorquetobefollowedbytheengineundersteadystate(ESCtest)ortransientoperatingconditions(ETC,ELRtest).3.4approvalofanengine(oranenginefamily)meanstheapprovalofanenginetype(oranenginefamily)withregardtotheleveloftheemissionofexhaustpollutants.3.5compressionignitionenginemeansanenginewhichworksonthecompression-ignitionprinciple.3.6enginefuelledwithgaseousfuelmeansanenginefuelledwithnaturalgas(NG)orliquefiedpetroleumgas(LPG).3.7enginetypemeansacategoryofengineswhichdonotdifferinsuchessentialrespectsasenginecharacteristicsasdefinedinAnnexAtothisstandard.3.8enginefamilymeansamanufacturer’sgroupingofengines,which,throughtheirdesignasdefinedinAnnexABGB17691-20053tothisstandard,havesimilarexhaustemissioncharacteristics;allmembersofthefamilymustcomplywiththeapplicableemissionlimitvalues.3.9parentenginemeansanengineselectedfromanenginefamilyinsuchawaythatitsemissionscharacteristicswillberepresentativeforthatenginefamily.3.10smokemeansparticlessuspendintheexhauststreamofadieselenginewhichabsorb,reflectorrefractlight.3.11netpowermeansthepowerobtainedonthetestbenchattheendofthecrankshaft,oritsequivalent,measuredinaccordancewiththemethodofmeasuringthepowerasdescribedinGB/T17962.3.12maximumnetpower(Pmax)meansthemaximumnetpowerdeclaredbythemanufacturerinhisapplicationfortype-approval.3.13percentloadmeansthefractionofthemaximumavailabletorqueatanenginespeed.3.14ESCtest(Europeansteadystatecycle)meansatestcycleconsistingof13steadystatemodestobeappliedinaccordancewithsection7.2ofthisstandard.3.15ELRtest(Europeanloadresponsetest)meansatestcycleconsistingofasequenceofloadstepsatconstantenginespeedstobeappliedinaccordancewithsection7.2ofthisstandard.3.16ETCtest(Europeantransientcycle)meansatestcycleconsistingof1800second-by-secondtransientmodestobeappliedinaccordancewithsection7.2ofthisstandard.3.17engineoperatingspeedrangemeanstheenginerange,mostfrequentlyusedduringenginefieldoperation,whichliesbetweenthelowandhighspeeds,assetou
本文标题:GB 17691-2005 车用压燃式、气体燃料点燃式发动机与汽车排气污染物排放限值及测量方法(英文
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