（汽车）SCR_Technology_for_Diesel_Engines .pdf

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1、SouthwestResearchItInstitittute®RSCRTechnologyforDieselSCRTechnologyforDieselEnginesMagdiKhair&QilongLuSouthwestResearchInstituteSanAntonio,TexasMarch,2010OutlineIntroductionTheLegislativeEnvironmentintheUSAStatusStatusofDieselEngineDevelopmentStatusofDieselEngineD

2、evelopmentAuxiliaryEmissionControlDevicesSystemDevelopmentFtsFor2010–HDSampleResultsSampleResults––HDHDSystemDevelopmentsFor2010–LDSummary/ConclusionRIntroductionRegulatoryConstraintsTechnologiesForInTechnologiesForIn--CylinderNOCylinderNOReductionxAuxiliaryEmissio

3、nControlDevicesExperienceatSwRIHeavyHeavy--DutyCalibration&DurabilityDutyCalibration&DurabilityLightLight--DutyDevelopmentDutyDevelopmentExhaustSystemArchitectureClosingClosingRemarksClosingRemarksRTheLegislativeEnvironmentInTheUSA0.601988-HRHRPP-Hulate,G/0.251991P

4、artic0.10199819940.052002(NO+HC)xStandardsFor2007/201012252.53456NOx,G/HP,G/HP--HRHRRTechnologiesForNOTechnologiesForNOReductionxInjectionSystemTechnologiesExhaustGasRecirculation--TimingStrategiesTimingStrategies--LightLight--MultipleInjectionsMultipleInjections--

5、ModerateModerate-RateRateShapingRateShaping-Massive--InjectionPressureInjectionPressureFuelsAlternativeCombustion--GasGas--ToTo--LiquidLiquidSystems-BidiBiodiesels--HCCIHCCIValveTrain--PilotPilot--ResidualsResiduals--PCCIPCCI--AECDsAECDs--CRManipulationCRManipulati

6、onRAuxiliaryEmissionControlDevicesHelpfulinMeetingRegulationsWhenEngineDeeeopetasSot(OCUS)velopmentFallsShort(DOCinUSA)AddCostandComplexityAllowAdditionalFreedominEngineAllowAdditionalFreedominEngineDevelopmentOptimization(DPFinUSA)AddAddCostandComplexityAddCostand

7、ComplexityMayBeTheOnlyWayToMeet2010(NORed.)xAddCostComplexityandUncertainty(ReliabilityAddCost,Complexity,andUncertainty(Reliability&Durability)RAuxiliaryEmissionControlDevicesAuxiliaryEmissionControlDevicesForForNOForNOReductionX--LeanNOLeanNOCatalyst(DeNO,HCSCR)X

8、X-LeanNOLeanNOTrap(NOTrap(NOAdsorbersNACNSR)Adsorbers,NAC,NSR)XX--UreaSCRUreaSCRForForPMReductionForPMReduction--CatalyzedSootFiltersCatalyzedSoo