GasolineEngineLowPressureEGRSystemDesignRisksandMitigation

GasolineEngineLowPressureEGRSystemDesignRisksandMitigation.pdf
LowPressureExhaustGasRecirculation(LP-EGR)isoneoftheseveraltechnologiesthatarebeinginvestigatedtode-liverfutureCO2reduceandmatchlegislativeemissionstandards.ThispaperwillintroducetheLP-EGRdesignrisksontheturbochargedgasolineengineanditsmitigation.Stringentlegislativemeasuresornationalandinternationallegislation/lawsobligetheautomotiveindus-trytoreducefuelconsumptionandemission.MostoftheOEMsinAsia,USandEuroareusingorconsideringtouseCEGRforgasolineengine.Tocomplywiththoseregulationsandtostaycompetitiveintheglobalmarket,itisnecessarytoadoptnewtechnology.CooledEx-haustGasRecirculation(CEGR)isaneffectivewaytoimprovefueleconomyandreduceNOx.BesidestheclearadvantagesofLP-EGRapplicationsonfueleconomyandemission,therearesomechallengestothecomponentsdesignandsoftwarecontrol.Problemsconcerningcomponentsaretheriskofcondensatewater,carbondeposition,fouling,coolerboil-ing,thelowdifferentialpressureofthesystem,failureriskofcatalyst,selectionofEGRcoolerspecifications,leakageoftheEGRvalve,thenoiseofDeltapvalveoutlet,andtransientcontrolaboutresponsedelayandcontrolaccuracy.Thispaperwillpresentthede-signexperienceofthelowpressureEGRsystemthatwehaveaccumulatedandexcavatedintheLP-EGRproject.
作者：KuangYunlongZhouHuachengPuraniaNarendraWeiHongLiLianbaoYangLinJiangEnjieWangRuiping
作者单位：ZhejiangGeelyRoyalEngineCo.,Ltd.
母体文献：第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集
会议名称：第19届亚太汽车工程年会暨2017中国汽车工程学会年会  
会议时间：2017年10月24日
会议地点：上海
主办单位：中国汽车工程学会
语种：chi
分类号：
关键词：lowpressureEGR  risks  mitigation  simulation  verification
在线出版日期：2020年7月9日
基金项目：
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GasolineEngineLowPressureEGRSystemDesignRisksandMitigation.pdf

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