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(,161005):,,:;;;:U464:A:1008-5696(2007)04-0049-02StructureandoperatingprincipleofoxygensensorLIUJian2kun(CommunicationBureau,QiqihaerBranchofHeilongjiangProvinceAgriculturalSettlementBureau,Qiqihaer,heilongjiang,161005)Abstract:Engineelectroniccontrolsystemadoptsoxygensensortoperformcloseloopcontrol.Itcanpreciselycontroltheair-fuelratioaccordingtotheengineoperatingcondition.Sothatitimprovesenginesexhaustingperformance.Thepaperintroducesthetype,structureandoperatingperformanceoftheoxygensensor.Keywords:oxygensensor;type;structure;principle:2006-12-24:(1976),,,:.(EGO),,ECUECU,(),01981102(A/F1417),,1(ZrO2)(TiO2),,,21)1,,,,,,,,COO2,CO21.2.3.4.5.67.8.9.()10.11.()12.13.1,,,,,12;,34,,300,,,(150200),,2)2,,,,,,1.2.3.4.5.6.()7.23)3,(A/F14171),CO,COCO2,,,,,,019V3(14171),CO,CO,,,,011VA/F1417(1),CO,CO(CO)(CO),,,019V011V3,,,,,1,(80km),;,4)3:60300,,(300),,(1214V)30031)4,,1.,2.()4,,,,,,2,,,(600),HC2),,,5(1),,,,,,CO,CO2,,(1),,,,1(A/F1417),ECU3):60600(64)059,,d(1),c,a,b1-;2-;3-;4-;5-;6-;7-8-;9-;10-1,0,,,,,,,,d,a,,b,bc,3,,,,,,,,2,,,,,,,,2[1],.[J].,2003(2).[2],,,.[J].,2003(1).[3],,.[J].,2001(3).[4],,.[J].,2001(3).[5],[J].,2001(3).[:](50)1.TiO2,2.,3.,4.,5.,6.,7.5[1].[M].:,2001.[2].[M].:,2000.[3].[M].:,1997.[4],.[M].:,2002.[5].[M].:,1998.[6].[M].:,1998.[7].[M].:,1996.[8].[M].:,2003.[:]469