许向东 德尔福中国科技研发中心 国6 排放标准的挑战与德尔福的解决方案(中英文).ppt

樊林LinFan,德尔福动力总成系统发动机管理系统开发及应用中国区总工程师ChiefEngineer,China,EMSdevelopment,DelphiPowertrainSystems,Jun2016,国6排放标准的挑战与德尔福发动机管理系统解决方案CN-6ChallengesandDelphiEMSSolutions,概要Outline,国6排放标准在颗粒物排放数目控制方面的挑战CN-6ChallengesinParticulateNumber(PN)EmissionControl德尔福应对国6颗粒物排放限值的400barGDi解决方案Delphi400barGDiSolutiontoPNEmissionControlforCN-6Compliance德尔福400barGDi实车案例分享ResultsofDelphi400barGDiDemoProjects,2,ChinaAutomotivePowertrainSummitBeijingJun16-17,GDi在颗粒物排放数目(PN)控制方面面临的挑战GDiEmissionChallengeParticulateNumber(PN),ChinaAutomotivePowertrainSummitBeijingJun16-17,3,Euro6b,China6,StoichiometricMulti-holeGDi,LeanStratifiedGDi,MPFI,OutwardlyOpening,1E+13,1E+12,1E+11,1E+10,GasolinePoweredVehiclesCurrentProductionEuro4&Euro5,NEDC,Newtestdrivecycles(WLTC)willposegreaterchallengeforGDiengineparticulateemissions,ParticulateNumberEmissions#/km,ParticulateMassmg/km,低颗粒排放的GDI发动机燃油系统方案FuelSystemStrategiesforLowParticulateNumberEmissions,36thInternationalViennaMotorSymposium78thMay2015,4,FuelPressureIncrease,OutwardlyOpeningNozzle,OptimizedSeatGeometryforMultihole,AlternativeFuelse.g.DI-CNG,DualInjectionSystemGDiandPFI,SingleInjectionSystem,GDiFuelSystemStrategiesforLowPNEmissions,Singlefuelsystemisleastcomplexhardwareandsoftwaresolution,缸内直喷汽油机燃油系统发展趋势FuelSystemTrendofGDIEngine,5,2012,2014,2016,2018,2020,150bar,200bar,250bar,400bar,HigherfuelinjectionpressureresultsinlowerPM/PNemission,高喷射油压改善雾化ImprovedAtomizationatHigherPressure,Slide6,喷嘴喷雾的动态图InjectorSprayVision,喷雾特性和喷射压力的关系InjectorSprayImagevsPressure,8,Multihole-150bar,Multihole-400bar,Betteratomizationat400bar,TestCondition:2500rpm/686kPaIMEP,单缸发动机燃烧室试验扩散火焰SingleCylinderEngineCombustionTests-DiffusionFlame,9,Effectoffuelsystempressureontipdiffusionflame,200bar,400bar,50bar,喷雾贯穿距和压力的关系SprayPenetrationvs.Pressure,Penetrationfrom50to400bar:Spraypenetration(atEOI)independentofpressureSpraypenetration(final)independentofpressureSprayanglenotsignificantlyimpactedbypressurePlumeangleincreaseswithpressure,Samefuelquantity:11mg/pulse,高油压降低颗粒物排放:250barHigherPressurereducesPMemissions:250bar,EngineDynamometerresults1.4LTGDiengineDelphi350barGDiinjectors,pump,&ECU,Page11,高油压降低颗粒物排放:300barHigherPressurereducesPMemissions:300bar,EngineDynamometerresults1.4LTGDiengineDelphi350barGDiinjectors,pump,&ECU,Page12,德尔福结焦试验中颗粒物排放数目的变化ParticulateNumberDriftinDelphiCokingTest,Transition,Transition,Transition,Transition,Transition,FuelPressure,EngineOperation,50bar,1h,100bar,1h,200bar,1h,300bar,1h,400bar,1h,200bar,10h,ConditioningCycle,EngineSpeed2500rpm,NMEP6.0bar,Tcool90CelSingleInjection,stoichiometric,SOI#PNoptimized,Multi-holeNozzle,lowtumbleMulti-holeNozzle,hightumbleOutwardlyNozzle,lowtumble,ParticulateNumber10E6/mm3,13,CleanInjector,德尔福400barGDi:低噪声高压泵Delphi400barGDiSolution:LownoiseGDipump,Uniquecontrolalgorithmandspillvalvedesignsignificantlyreducetheoperationnoise,德尔福400barGDi:喷油器在使用寿命中保持高精确度Delphi400barGDiSolution-GDiInjector:Highprecisionoverlifetime,Excellentsurfacequalityandsharpedgesreducecoking,Femto-SecondLaserDELPHI,Pico-SecondLaser,LowerFlowLimit,UpperFlowLimit,LowerFlowLimit,UpperFlowLimit,Laserdrilledholefabrication,EDMholeFabrication,Reducedflowvariationrequireslesscompensationoninjectorlevel,CounterBore,FlowHole,GDiInjectorSeat,StaticFlowCapabilityofGDiInjectorSeats,Laserdrillingprocessprovidessuperiorflowholesizeandfinish,16,德尔福400barGDi:喷油器在使用寿命中保持高精确度Delphi400barGDiSolution-GDiInjector:Highprecisionoverlifetime,多次喷射控制逻辑Multi-pulseInjectionschedulingCapability,17,m1:splitratio,m2:splitratio,m5:absolutorsplitratio,50:50splitratio,Torquetotalmassdemand,5,3,2,1,1,2,3,4,5,2ndstep,1ststep,3rdstep,TDCNon-Firing,TDCFiring,MassSplit,Delphimulti-pulseinjectionfunctionalityforupto5injectionspercombustionevent,多次喷射对排放的优化:冷启动和暖机过程中HC与PN排放ColdStartandWarm-upinWLTCHCand#PNEmissions,18,CumulatedabsoluteParticulateNumber#,0,0,CumulatedabsoluteHCmg,Speedkm/h,40,20,First30secinWLTCs,0.005,0.010,0.015,0,0.5E+11,1.0E+11,1.5E+11,20CambientCECReferenceFuel,0,5,10,15,20,25,30,Multipleinjectionisakeyenablertoachievelowparticulatenumberemissions,2pulse,4pulse,ICLC消除散差对喷油精确度的影响ICLC:Eliminateimpactofflowmassdeviations,ParttoPartFuelMassVariationmg/injection,InjectedFuelMassmg/injection,InjectionPulseWidths,350bar,n-heptane,Transition,Ballistic,FullLift,ICLCInjectorClosedLoopControl,MinimumfuelrequirementQminbecomeschallengingwithhigherpressure,19,ICLC,FlowCurveandFuelMassDeviations,喷油器闭环控制逻辑InjectorClosedLoopControl,InjectorLowMassFuelingVariation,ICLCInjectorClosedLoopControl,StandardDeviation%,noCompensation,InjectedFuelMassmg,ICLCCompensated,newaged,n-heptane,Delphiclosedloopcontrolenablesinjectionprecisionoverfulllife,20,德尔福GDi燃油喷射系统DelphiGDiFIESystem,21,SolenoidInjectorsMulti-holeNozzle,ElectronicControlUnit,HighPressurePump,Delphi400barfuelinjectionsystemforEuro6cdemonstrationvehicle,德尔福实车案例-三种不同的测试工况的PN排放达标DelphiDemo-VehicleResultsDifferentDrivingCycles,22,CumulativePNPercentageofbaselineproductiononNEDC%,Times,CECReferenceFuel,44%(21%excludingColdStart),ParticulateNumberEvolutionvs.TestCyclePercentageofBaselineProductiononNEDC,150,0,75,0,75,0,75,VehicleSpeedkm/h,Delphi400barinjectionsystemenablesrepeatablelowPNformultipletestcycles,RDE,WLTC,NEDC,12%,25%,德尔福实车案例-WLTC测试工况下排放达标，同时不损失油耗DelphiDemo-VehicleEmissionResultsinWLTC,23,CO2Neutral,Emissions%ofEuro6c,ToxicandParticulateMassEmissions,%ofEuro6cLimit,CECReferenceandCommercialFuels,10TestsWLTC,Euro6cLimit,%CO2DeviationfromSeriesProductionVehicle,%CO2Emission,Delphi400barinjectionsystemenablesEuro6cwithnoCO2penalty,德尔福GDi技术路径图帮助整车厂满足未