Inzwa ye-post-oksijeni

Kule mihla, iimoto zixhotyiswe nge-oxygen sensors ezimbini, enye iphambi kwe-catalyst yeendlela ezintathu kunye nenye emva kwayo. Umsebenzi wangaphambili kukubona umlinganiselo we-air-fuel ye-injini phantsi kweemeko ezahlukeneyo zokusebenza, kwaye kwangaxeshanye, ikhompyuter ilungelelanisa ubungakanani benaliti yamafutha kwaye ibala ixesha lokutshisa ngokwalo mqondiso. Ngasemva ikakhulu kukuvavanya umsebenzi wendlela ezintathu zokuguqula amandla! Oko kukuthi izinga lokuguqulwa kwe-catalyst. Isiseko esibalulekileyo sokuvavanya ukuba i-catalyst yeendlela ezintathu isebenza ngokuqhelekileyo (elungileyo okanye embi) ngokuthelekisa neenkcukacha ze-oxygen sensor yangaphambili.

intshayelelo yokwakheka

Inzwa yeoksijini isebenzisa umgaqo weNernst.

Undoqo wayo yityhubhu ye-ceramic ye-ZrO2 ene-porous, eyi-electrolyte eyomeleleyo, kwaye amacala ayo amabini ane-sintered nge-electrode ye-Pt ene-porous. Kwiqondo lobushushu elithile, ngenxa yoxinzelelo olwahlukileyo lweoksijini kumacala omabini, iimolekyuli zeoksijini kwicala eliphezulu lokuxinana (ngaphakathi kwe-4 yetyhubhu ye-ceramic) zibhengezwa kwi-electrode yeplatinam kwaye idityaniswe nee-electron (4e) ukwenza i-oxygen ion O2- , eyenza i-electrode ihlawulwe kakuhle, kwaye i-O2-ion ifudukela kwicala le-oxygen ephantsi (i-exhaust gas side) ngokusebenzisa i-oxygen ion izithuba kwi-electrolyte, eyenza i-electrode ihlawuliswe kakubi, oko kukuthi, ukuhluka okunokwenzeka kuveliswa.

Xa i-air-fuel ratio iphantsi (umxube ocebileyo), kukho i-oksijini encinci kwi-gesi yokukhupha, ngoko ke kukho i-oksijini encinci ye-oxygen ngaphandle kwe-tube ye-ceramic, eyenza i-electromotive force malunga ne-1.0V;

Xa i-air-fuel ratio ilingana ne-14.7, i-electromotive force eyenziwa kumacala angaphakathi nangaphandle kwi-tube ye-ceramic yi-0.4V ~ 0.5V, eyona nto i-electromotive force reference;

Xa umlinganiselo we-air-fuel uphezulu (umxube onqabileyo), umxholo we-oksijini kwigesi yokukhupha iphezulu, kwaye umehluko woxinaniso lweeoni ze-oksijini ngaphakathi nangaphandle kwetyhubhu ye-ceramic incinci, ngoko amandla e-electromotive aphantsi kakhulu kwaye asondele kwi-zero. .

Isivamvo seoksijini eshushu:

-Inzwa ye-oksijini efudumalayo inokumelana nokukhokela okunamandla;

-Ingaphantsi kokuxhomekeka kwiqondo lokushisa, kwaye inokusebenza njengesiqhelo phantsi komthwalo ophantsi kunye nokushisa okuphantsi kokushisa;

-Faka ngokukhawuleza ulawulo oluvaliweyo emva kokuqala.