运转参数对电喷汽油机怠速排放的影响

(,310018):,.,HCCO;,HCCO;HC;NOx,.:;;:TK441+.5:A:1008-536X(2009)03-0088-04InfluenceofOperatingParametersonExhaustEmissionofEFIGasolineEngineatIdleSpeedGAOZhao-liang(ZhejiangWaterConservancyandHydropowerCollege,Hangzhou310018,China)Abstract:TherelationshipbetweenexhaustemissionofEFIgasolineengineatidlespeedandtheoperatingparameters,suchascoolanttemperature,idlespeed,sparkadvanceangleandload,hasbeenmeasuredandanalyzedintheessay.Itshowsthatthelowercoolanttemperatureis,themoreHCandCOaredischargedatidlespeed.Astheidlespeedgoesfaster,thelessHCandCOwillbedis-charged,ToputoffIgnitionAdvancewilldecreasethedischargeamountofHC.Underthecircumstancesofidlespeed,thedischargeamountofNOxislower,butitwillchangedependingonthechangeoftheload.Keywords:EFIgasolineengine;operatingparameters;idlespeed;exhaustemission0,,.,ECU,,1000r/min,,(),ECU800r/min,,,ECU,9001500r/min.,:2009-06-14:(20070850):(1957-),,,..,,,;,,;,.,,NOxN2,NOx.,.11.11.HNA-5002000AFE(76000km).HNA-500COHCCO2,NOO2,COHCCO2O2213Vol.21No.320099J.ZhejiangWat.Cons&Hydr.CollegeSep.2009.,.11.2,40(),.,ECU,,(),.,.22.123,HCCO.35,CO,35,,,;45HC.,,,,ECU,,,;,,HCCO.,,,HC,HC,HC.,CO,,CO0.4%.2(1)3(2)2.2,.,..45,600r/min,HCCO,,,,,,,HCCO.,[3].2.3,,10%20%[4].3:894HC5CO,,,HCCO,NOx.,,HC,;,,HC.,CO.6NOx,,,NOx.,,,NOx.2.4,HC,,,,HC,HC,,7.,,,,,,TWC,,[5].NOx,,,NOx.,,NOx.,CO.6NOx73.(1)HCCO,,HCCO;,HCCO,,HCCO,.(2),HCCO9021;,.,,.(3)HC,,.(4),,NOx,.:[1],,,.[J].,2005,25(9):1151-1155.[2].[M].:,2004.70-75.[3],,,.[J].,2007,169(3):64-67.[4].[M].:,2004:2-10.[5],,,.HC[J].,2002,24(4):331-335.(84):[1].[J]..2007(2):58-62.[2],,.[J]..2008(1):137-140.[3].Solidworks[J]..2007(3):66-68..,(833)().,,,,,.,.,36.42,80,,.,:(),(),;,,.,,,.,,.(),.(),.,.,(1242)40,.,(1259),..(1536)()1(),(1857).1914,.134.4m,4.8m,,.1987.()3:91