I-converter ye-catalytic iyona nto ibaluleke kakhulu kwisixhobo sokuhlanjululwa kwangaphandle efakwe kwinkqubo yokukhupha, enokuguqula iigesi ezinobungozi ezifana ne-CO, i-HC kunye ne-NOx kwi-gas yokukhupha i-carbon dioxide engenabungozi, amanzi kunye ne-nitrogen ngokusebenzisa i-oxidation kunye nokunciphisa.Xa igesi yomsila ophezulu wokushisa idlula kwiyunithi yokucoca, i-arhente yokucoca kwi-catalyst iya kuphucula umsebenzi we-CO, i-HC kunye ne-NOx kwaye ibakhuthaze ukuba benze i-oxidation ethile yokunciphisa i-chemical reaction, apho i-CO i-oxidized kwi-colorless and colorless. igesi ye-carbon dioxide engekho yingozi kwiqondo lokushisa eliphezulu;Iikhompawundi zeHC zixutywa nge-oxidized emanzini (H20) kunye ne-carbon dioxide kumaqondo aphezulu;I-NOx iyancitshiswa ibe yinitrogen kunye neoksijini.Iigesi ezintathu eziyingozi ziba ziigesi ezingenabungozi, ukuze irhasi yomsila icocwe.
Inxalenye yomthwali we-catalyst yingcezu ye-porous ceramic material, efakwe kwipayipi ekhethekileyo yokukhupha.Ibizwa ngokuba ngumthwali ngenxa yokuba ayithathi nxaxheba kwi-catalytic reactions, kodwa ihlanganiswe neplatinam, i-rhodium, i-palladium kunye nezinye iintsimbi ezixabisekileyo.Iyakwazi ukutshintsha i-HC kunye ne-CO ekukhupheni igesi emanzini kunye ne-CO2, kwaye idibanise i-NOx kwi-nitrogen kunye ne-oxygen.I-HC kunye ne-CO ziigesi ezinetyhefu.Ukuphefumla okugqithisileyo kuya kukhokelela ekufeni, ngelixa i-NOX iya kukhokelela ngokuthe ngqo kwi-photochemical smog.
Ngaphantsi kwemeko eqhelekileyo yokusebenza ye-catalytic converter, ngenxa yobuninzi bokusabela kobushushu obuveliswa yi-oxidation reaction, ukusebenza kwe-catalytic converter kunokugwetywa ngokuthelekisa umahluko wobushushu.Iqondo lobushushu eliphumayo le-catalytic converter liya kuba li-10 ~ 15% ubuncinane ngaphezulu kobushushu bokungena.Kuninzi lwabaguquli besiqhelo be-catalytic, iqondo lobushushu lokuphuma kwe-catalytic converter liya kuba ngama-20 ~ 25% ngaphezulu kobushushu bokungena.
I-honeycomb metal substrate catalyst ineenzuzo zokutshisa ngokukhawuleza, umthamo omncinci, amandla aphezulu omatshini, ukuxhathisa ubushushu obubalaseleyo, njl.Sinokuhlangabezana nomgangatho wokukhupha i-Euro II, i-Euro III, i-Euro IV, i-Euro V, i-EPA kunye ne-CARB.