缸内直喷汽油机的HC排放特性分析及未来排放法规对其的挑战性-英文-.doc

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1、HUANGYingetal./HCEmissionAnalysisofGasolineDirectInjectionEnginesandChallengeFacedArticleID:100420579(2001)0320278207HCEmissionAnalysisofGasolineDirectInjectionEnginesandChallengeFacedbySuchEnginesinMeetingFuture’sEmissionStandardHUANGYing,　GEYun2shan,　ZHAN

2、GFu2jun,　ZHAOJing2wei(SchoolofVehicleandTransportationEngineering,BeijingInstituteofTechnology,Beijing100081,China)Abstract:Basedontheintroductionofthebasiccombustionconceptofgasolinedirectinjection(GDI)engineanditsoperationunderdifferentoperatingconditions

3、,HCemissionmechanismsoftheGDIengineareanalyzed.AndHCemissioncharacteristicsoftheGDIenginearecom2paredwiththePFIengineviaacomparisontestbasedontheFTP275drivingcycle.ItcanbeconcludedthattheGDIengineisfacingabigchallengeinmeetingthefuture’sHCemissionstandard.R

4、easonsforthehigherHCemissionsoftheGDIenginearediscussedandthewaysforHCemissioncontrolaregiven.Keywords:gasolinedirectinjection(GDI);emission;coldstart;gasolineengineCLCnumber:TK411153　　　Documentcode:AWithgasolinedirectinjection(GDI)engine,bothfueleconomyand

5、driveabilitycanbeachievedsimultaneously.SomeworldleadingcompanieshaveputtheirGDIenginesintothemar2ket,suchasMitsubishiandToyota.Howeverthepropertyoftheexhaustemissionisnotclearforthisengine.Itiswellknownthatthevehicleemissionstandardisbecomingmoreandmorestr

6、ingentworldwide.AccordingtoULEV,Tier2,EuroⅢandEuroⅣ,thefurtherreductionofHCemissionsmustbeachieved.AndreferingtoFPT275testcycleandNEDC(newEuropeandrivingcycle)testcycle,tailpipeemissionswillbemeasuredfromstartingup,withaccelerationloadingat21sand11srespecti

7、vely.Itmeansthatexhaustemissionsduringcoldstarthavebeentakenintoaccount1.InthispapermechanismsofHCemissionsoftheGDIengineareanalyzed.AndtheHCemissioncharacteristicsoftheGDIengineandthePFIenginearecomparedbasedonsomeexperi2mentalresults.Sothebigchallengewhic

8、htheGDIengineisfacinginmeetingthefutureemissionstandardcanbefiguredout.Received　2000206212Biography　HUANGYing(1967-),associateprofessor.—279—HUANGYingetal./HCEmissionAnalysisofGasolineDirectInjectionEn