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.