柴油發(fā)動機(jī)介紹及其排放標(biāo)定

柴油發(fā)動機(jī)介紹及其排放標(biāo)定第1頁/共57頁2?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsTableofContentBasicintroductionEmissionSolutionstoMeetHD/MDCN4/5RegulationEmissionSolutionstoMeetPC/LDvehiclesCN4/5Regulation第2頁/共57頁3RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsAbbreviation

EGRExhaustGasRecirculation

廢氣再循環(huán)

DOC

DieselOxidationcatalyst

柴油機(jī)氧化型催化器

DPF

DieselParticulatefilter

柴油機(jī)顆粒過濾器

POC/PFF

ParticulateOxidationCatalyst(PartialFlowFilter)

顆粒氧化型催化器

SCR

SelectiveCatalyticreduction

選擇性催化還原

CRT

ContinuousRegenerationTechnology

連續(xù)再生技術(shù)Basicintroduction第3頁/共57頁4Internal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

ComparisonofEmissionTestsBasicintroduction第4頁/共57頁5Internal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

Speed/LoadArea

ofEmissionTestsEmissioncontrolstrategytowardsEU4/5

第5頁/共57頁6PassengerTransport>9PersonsEmissionLegislationIntroductionRBCD/EVL|06/16/2006|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.

ChinaIII/IV:VehicleClassesGoodsTransportIIIIIIPassengerCars: M1*PC/LightDutyVehicles: M1**HD-BusseswithGVW≤3500kg: M2HeavyDutyVehicles,BusseswithGVW>3500kg:M1***,M2,M3;N2,N3N1M1*M1**N2M3M1***≤1305kg>

1305kg≤1760kg>1760kgLDClassesClassificationaccordingtoReferenceweight(RW)GB18352.3LightDutyTrucks: N1GB18352.3GB18352.3

(alternativelyGB17691-2005,butNDRCrequestsGB18352.3)GB18352.3GB17691-20052,53,55,012,0GrossVehicleweight(t)IIIIIIN3InRed:DifferencestoChinaIIInBlue:DifferencestoEuroIII,IV≤9Persons≤6PersonsGB18352.3: chassiscertificationGB17691-2005:enginecertificationM21)no.ofpersonsincl.driverLight-DutyCertification(MNEDC)Heavy-DutyCertification(ESC,ETC,ELR)參考重量=空車+100kg總重（標(biāo)重）：與養(yǎng)路費(fèi)和罰款相關(guān)第6頁/共57頁7Commonrailsystemona4-cylinderengine

Basicintroduction第7頁/共57頁8PressurecomparisonofEDC-systems

Comparisonofinjectionsystemsbarmin-12000160012008004000InjectionpressureatthenozzleCRUISVP441000 2000 3000 4000EnginespeedInjectionpressureBasicintroduction第8頁/共57頁9Futuredemandsondieselinjectionsystems

Exhaust-gastreatmentmanagementAcousticmeasurescombustionoptimizationInjectioncharacteristicHighpressureinjectionTolerancereductionBasicintroduction第9頁/共57頁10Comparisongasoline–Diesel

Gasolineengine(dirrectinjection)Dieselengine(commonrail)Injectionpressure30~160bar300~1600barControlstrategy噴油控制+點(diǎn)火控制噴油控制Max.enginespeed70001/min1500…50001/minLambdacontrol排放區(qū)=1（0.98~1.02），其他區(qū)域<1任何工況>1Compressionratio≈10≈17Combustionbowl

HD/MDPCBasicintroduction第10頁/共57頁11燃燒系統(tǒng)對比GasolineTSIengineDieselengine(PassengerCar)第11頁/共57頁12EmissionLegislationIntroductionInternal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

ESCCycleforHDEngines(13mode)(EU/ChinaIII)idle255075PowerSpeedABC30%50%MaximumXXX12756911131210348第12頁/共57頁13EmissionLegislationIntroductionInternal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

HD-TestCycleESC,ETC(EU/ChinaIII,IV)

第13頁/共57頁14EmissionLegislationIntroductionInternal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

HD-TestCycleETC(EU/China(IIIwithaftreatreatment),IV,V)第14頁/共57頁15EmissionlegislationDepartment|4/30/2008|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsESCandETCtestpointsExampleforETCtestpoints:8LEuro4engine第15頁/共57頁16EmissionLegislationIntroductionInternal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

HD-TestCycleELR(Euro/ChinaIII,IV)

第16頁/共57頁17EmissionLegislationIntroductionInternal|RBCD/EVL1|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

ModifiedNewEuropeanDrivingCycle(Euro/ChinaIII,IV)UrbanCycle

4X195SecExtra-UrbanCycle

1X400Sec第17頁/共57頁18EmissionCalibration第18頁/共57頁19RBCD/EVL|12/24/2007|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.

Trade-offonEmissionsPointsEmissionCalibration第19頁/共57頁20EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsManagementsystemsinjection+combustionprocessairsystemexhaustaftertreatmentEngineEmissionperformance第20頁/共57頁21

RBCD|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.EmissioncontrolstrategytowardsEU4/5

EmissionSolutionstoMeetHD/MDCN4/5Regulation滿足國4/5的重型車排放策略第21頁/共57頁22RBCD/EVL|21/10/2008|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.MainstreamStrategyformeettheEU4/5(HD/MD)EuroV:SCR80%Long-distanceHD:SCR;short-distancecommercialvehicle:EGR/PM-Cat.UniteStates(US07):EGR+DPFJapan(JP05):EGR+DPFChina:EmissionLegislationreferencefromEUEmissioncontrolstrategytowardsEU4/5

第22頁/共57頁23RBCD/EVL|21/10/2008|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.ESCEmissionLimitationsFromEuro3toEuro4NOxreduction:30%PMreduction:80%

ChinaIIIChinaIVCO(g/kWh)2.11.5HC(g/kWh)0.660.46NOx(g/kWh)53.5PM(g/kWh)0.10.02EmissionLimitsinESCcycle:?EmissioncontrolstrategytowardsEU4/5

第23頁/共57頁24EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsEmissionLegislation(HD):EU,USA,Japan,第24頁/共57頁25Emissionsolutionintroduction?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystems對于重型柴油機(jī)滿足國IV排放標(biāo)準(zhǔn)，一般有兩條技術(shù)路線：一是SCR路線，也稱歐洲路線，通過燃燒優(yōu)化使微粒排放滿足要求，再通過SCR對NOx進(jìn)行處理；二是EGR路線，也稱美國路線，通過EGR降低NOx排放達(dá)到要求，再采取DOC、POC或DPF等微粒后處理技術(shù)降低微粒排放。但無論采用哪種技術(shù)路線，機(jī)內(nèi)凈化都是排放控制的核心技術(shù)，對于保證發(fā)動機(jī)的性能、減小對后處理的依賴、降低成本具有重要意義。第25頁/共57頁26RBCD/EVL?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.

ESCEmissionLimitations01234567891011NOx[g/kWh][g/kWh]Quelle:K5/EVD-Z305.1/090wEGRwoEGRSCRPTSCR+PTEUROVEUROIV00,050,020,10,15PMEUROIIIUS07EGR:

Exhaust

Gas

RecirculationPT:ParticulateTrapSCR:SelectiveCatalyticReduction

Remark:PTincaseofrelativelylowenginepowerdensityParticulateMatterCatalystsufficientforreduction廢氣再循環(huán)顆粒捕捉器選擇性催化還原EmissioncontrolstrategytowardsEU4/5

第26頁/共57頁27RBCD/EVL|21/10/2008|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.PotentialmarketforEuro4EGRstrategyinChinaSCR:CostofSCRsystemisalmostconstant,whatevertheenginedisplacement.BenefitinFuelconsumptionismoreimpressivewithincreaseofenginedisplacement.EGR:CostofcatalystPOC/DOC=f(displacement)PotentialmarketforEuro4EGRstrategyinChinaMDvehicle(displacementabout2.5L~6L)~20%ofdieselcommercialvehicleEmissioncontrolstrategytowardsEU4/5

第27頁/共57頁28EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsDieselSystemsEGT(SCR)advantage:lowcostdisadvantage:higherfuelconsumptionpreferreduse:lowmileagevehiclesDosingmoduleSupplymodulewithdosingcontrolunit(DCU)AdBluetankEnginecontrolunit(ECU)AdBluepipesECUcontrollineCANEGRcoolerEGRvalveEGRpipeEGRadvantage:lowestfuelconsumptiondisadvantage:highersyst.costpreferreduse:highmileagevehicles第28頁/共57頁29Confidential|RBCD/EGT-lih4wx|2010-2-22|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystemsSCRsystemoverviewDENOXTRONIC2.2Trainingredcolored=Boschsuppliedgreycolored=optionalsensors第29頁/共57頁30USTempSensorSCRtechnologyintroductionInternal|RBCD/EGT|10/13/2009|Pres09_154|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.N2N2O2HCSCRDOCCOCO2SMNOX/NH3SensorDSTempSensorNH3NOxUREANH3NOxWhySCR?第30頁/共57頁31SCRtechnologyintroductionInternal|RBCD/EGT|10/13/2009|Pres09_154|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DSTempSensorUSTempSensorSCRDOCSTEP1:ThermalHydrolysisCO(NH2)2+H2O→2NH3+CO2N2N2O2CO2NH3STEP2:SCRReaction4NH3+4NO+O2->4N2+6H20(A)4NH3+4NO2->4N2+6H20+O2(B)NOX/NH3SensorNOxSMUREA第31頁/共57頁32RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsMainstreamEuro4conceptsforMD/HDVehiclesStrategyHigh-EGRNoEGTEGRw/PMCat.EGRw/DPFCat.NoEGR,SCRInjectionsystem>/=CRSN3>1800barCRSN21600barCRSN21600barCRSN21600barFuelconsumptionAppr.0%Appr.0…2%Appr.2…5%Appr.-3…-5%,but4%adblueCalibrationeffortHigho.k.Higho.k.butadditionalDNOXcalibrationEfficiencyofEGT0%Appr.50%Appr.90%Appr.80%AirsystemAdvancedturbocharger,highefficientcooledEGRw/highEGRratesCooledEGRw/lowEGRrates.NoadvancedTCCooledEGRw/lowEGRrates.NoadvancedTCNoadvancedTCChallengesAirsystem,enginepower,emissionssafetymarginOptimizedcombustion(lowerconversionrateofPOCcomparedtoDPF)DPFregeneration,verylowsulfurfuel(<20ppm),rellateinjectiontimingAdBlueinfrastructure,lowsulfurfuel（<500ppmm）EmissioncontrolstrategytowardsEU4/5

第32頁/共57頁33EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsSCRtechnologytoCN4/5PMreducedtoCN4/5byinternalcombustionoptimizationHighinjectionpressureAdvancedinjectiontimingNOxreducedbySCRcatalystwithammoniadosingConversionrate65~70%forCN4,openloopcontrolConversionrate80~90%forCN5,closeloopcontrolRequirement:SCRCatalystDeNOxAdBlueDosingsystemAdBlueinfrastructure第33頁/共57頁34EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsSCR–overviewofchemicalprocessHydrolysiscatalyst(NH2)2CO+H2OT2NH3+CO2NOxinexhaustgasUreawatersolution(32.5%urea)Ammonia(NH3)NOxSCRcatalystNO+NO2+2NH3T2N2+3H2O

NOx

Cleanedexhaustgas第34頁/共57頁35EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsEGRwithPMCat.toCN4/5TCEGRICDOC+POCPMcatalystNOxreducedtoCN4/5byEGREGRrate~15%forCN4,openloopcontrolEGRrate~25%forCN5,closeloopcontrolPMreducedbyPMcatalyst(POC)Conversionrate~50%OpensystemRequirement:EGRsystemPOCandDOCLowsulfurfuelAdvancedTCforCN5Oilconsumption<0.1g/kWh第35頁/共57頁36EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsEGRenginelayoutExample:4cylinder,DC-motorEGR第36頁/共57頁37EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsCompositionofDieselParticulatesExample:HDdieselengine,USFTPtransientcycle,1998第37頁/共57頁38RBCD/EVL|21/10/2008|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DOC+POCEmissioncontrolstrategytowardsEU4/5

Source:UmicoreInfo.fromUmicore,NO2/Soot>25~40willshowgoodCRTeffect.第38頁/共57頁39EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsTheeffectofDOCEffectonTotalNOxEmissionsNomorethanafewpercentSOFRemovalConsideredsameasHCPerformanceConversionofCOandHCinDieselOxidationCatalystConcentrationofNO2withDieselOxidationCatalystAfterDOCEngine-out第39頁/共57頁40EmissioncontrolstrategytowardsEU4/5

RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsTheeffectofDOCParticulateMatterPerformanceDOCImpactonPMEmissionswithSulfurContainingFuelsPMwithanOxidationCatalyst第40頁/共57頁41RBCD/EVL|21/10/2008|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.OpenSystemforContinuousSootOxidation(POC)EmissioncontrolstrategytowardsEU4/5

ESCETCPrinciple:DepositionofparticlesonporousfibrefleeceLayout:corrugatedfoilwithsmallbladesMechanism:1)SootDeposition2)SootOxidationC+2NO2

CO2+2NO020406080beforePM-KATConversionConversionRate,%020406080PM,mg/kWhafterPM-KATConversionRate:Source:MTZ6/2005第41頁/共57頁42RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsFilterConfiguration:gasflowpatternWall-FlowandFlow-ThroughSubstrates:FlowPatternWall-FlowandFlow-ThroughSubstrates:InletCellPatternopenandpluggedcellsattheirinlet(aswellasoutlet)faceEmissioncontrolstrategytowardsEU4/5

第42頁/共57頁43EGTintroductionRBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsDPF–filtermechanismAdjacentchannelsclosedoffateachendbyceramicplugsExhaustgasisfordedtopenetratethroughceramicwalls1st:Deep-bedfiltrationparticlesaretransportedintotheporewallsbydiffusion2nd:Surfacefiltrationhighlyefficientfiltrationbythelayerformedbysootparticulates3rd:Regenerationburningoffdepositedsoottodecreasetheexhaust-gasbackpressure第43頁/共57頁44RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsPOC&DPFPOCDPFEmissioncontrolstrategytowardsEU4/5

第44頁/共57頁45

RBCD|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.EmissioncontrolstrategytowardsEU4/5

EmissionSolutionstoMeetPC/LDvehiclesCN4/5Regulation滿足國4/5的輕型車排放策略第45頁/共57頁46|RBCD/EVL|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystemsEUIVcertificationatleast*)EUfinalproposal(12.2006)0.0000.0050.0100.0150.0200.0250.0300.000.000.25NOx[g/km]Particulates[g/km]DieselPCEU4(01/05)(09/09)EU5*wallflowDPFEmissioncontrolstrategytowardsEU4/5

第46頁/共57頁47|?RobertBoschGmbHreservesallrightsevenintheeventofindustrialpropertyrights.Wereserveallrightsofdisposalsuchascopyingandpassingontothirdparties.DieselSystems

PC/LDV尾氣后處理技術(shù)：選擇性氮氧催化還原SCR減少氮氧化物60%~90%需要輔助裝置運(yùn)行柴油機(jī)顆粒捕捉器DPF(閉環(huán)系統(tǒng))減少顆粒>98%需要激活后處理功能NOx儲存催化器NSC減少氮氧化物50%~80%需要激活后處理功能需要貴重金屬EU5必須使用EmissioncontrolstrategytowardsEU4/5

第47頁/共57頁48DPFSystemlayout:(顆粒捕捉器的結(jié)構(gòu))顆粒捕捉器氧化催化器地板式系統(tǒng)Underfloorsystem顆粒捕捉器氧化催化器氧化催化器相連型系統(tǒng)（緊耦合）Closedcoupledsystem足夠長的使用壽命

較低的排氣背壓

很高的熱反應(yīng)

高后處理性能DPF基材要求:EmissioncontrolstrategytowardsEU4/5

第48頁/共57頁49RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsDieselParticulateFilter-柴油顆粒捕捉器Cordierite堇青石outletchannel出口filtrationwall過濾墻(>95%)Plugs接頭inletchannelSiliconCarbide

金剛砂ParticulateMatter(PM)highspecificsurface~1m2/liter高精確表面~1m2/升Loading

填裝Regeneration=PM-Oxidation再生＝顆粒氧化EmissioncontrolstrategytowardsEU4/5

第49頁/共57頁50System系統(tǒng)Characteristics特性Regenerationtemperatures后處理溫度Remarks備注cDPF涂層顆粒捕捉器withcatalyticsupport需要涂層催化劑的支持~600°CMainstreamsolutionrecommend主流選擇(bare)DPF(不帶涂層)顆粒捕捉器w/ocatalyticsupport不需要催化劑支持>600°CHightemp.needed=>CCposition需要更高的溫度，和氧化催化器相連型系統(tǒng)DPFSystemlayout:(顆粒捕捉器的結(jié)構(gòu))EmissioncontrolstrategytowardsEU4/5

第50頁/共57頁51RBCD/EVL|?RobertBoschGmbH2008.Allrightsreserved,alsoregardinganydisposal,exploitation,reproduction,editing,distribution,aswellasintheeventofapplicationsforindustrialpropertyrights.DieselSystemsExhaustgastreat