Olunye ulwazi malunga nenzwa ye-oxygen

Umgaqo:

Inzwa ye-oxygen lubumbeko oluqhelekileyo kwimoto.Isebenzisa izinto ze-ceramic ezibuthathaka ukulinganisa amandla e-oksijini kumbhobho wokukhupha imoto, kwaye ibala ugxininiso lwe-oksijini ehambelanayo ngomgaqo wokulinganisela kweekhemikhali ukujonga nokulawula umlinganiselo wokutsha we-air-fuel ukuqinisekisa umgangatho wemveliso kunye nento yokulinganisa edibana nokukhutshwa kokukhupha. umgangatho.

Isivamvo seoksijini sisetyenziswa kakhulu kulawulo lwe-atmosfera yeentlobo ezahlukeneyo zokutsha kwamalahle, ukutsha kweoyile, ukutsha kwerhasi, njl.Ineenzuzo zesakhiwo esilula, ukuphendula ngokukhawuleza, ukugcinwa lula, ukusetyenziswa kakuhle, ukulinganisa ngokuchanekileyo, njl.njl Ukusebenzisa inzwa yokulinganisa nokulawula umoya wokutsha awukwazi nje ukuzinza nokuphucula umgangatho wemveliso, kodwa nokunciphisa umjikelezo wemveliso kunye nokugcina amandla. .

Iinto zokuzilungisa

Inzwa yeoksijini isebenzisa iNernst umgaqo.

Into engundoqo yityhubhu ye-ceramic ye-ZrO2 ene-porous, eyi-electrolyte eyomeleleyo, ene-platinum (Pt) ene-electrode ene-sintered macala omabini.Kwiqondo lobushushu elithile, ngenxa yoxinzelelo olwahlukeneyo lweoksijini kumacala omabini, iimolekyuli zeoksijini kwicala eliphezulu (icala elingaphakathi kwityhubhu ye-ceramic 4) ibhengezwa kwiplatinum electrode kwaye idityaniswe ne-electron (4e) ukwenza. i-oxygen ion O2-, eyenza i-electrode ihlawulwe kakuhle, i-O2 -I-ion ifudukela kwicala eliphantsi loxinzelelo lwe-oksijini (icala lokukhupha igesi) ngokusebenzisa izithuba ze-ion ze-oxygen kwi-electrolyte, ukwenzela ukuba i-electrode ihlawuliswe kakubi, oko kukuthi, into enokwenzeka. umahluko uyaveliswa.

Xa umlinganiselo we-air-fuel uphantsi (umxube ocebileyo), kukho i-oksijini encinci kwi-gesi yokukhupha, ngoko ke kukho i-oxygen engaphantsi kwe-oxygen ngaphandle kombhobho we-ceramic, okwenza i-electromotive force malunga ne-1.0V;

Xa i-air-fuel ratio ilingana ne-14.7, amandla e-electromotive eyenziwa kumacala angaphakathi nangaphandle kwi-tube ye-ceramic yi-0.4V ~ 0.5V, kwaye le mandla e-electromotive yi-reference electromotive force;

Xa umyinge we-air-fuel uphezulu (umxube onqabileyo), umxholo we-oksijini kwigesi yokukhupha iphezulu, kwaye i-oxygen ion concentration ye-oxygen phakathi kwangaphakathi nangaphandle kwi-tube ye-ceramic incinci, ngoko ke amandla e-electromotive eyenziwe aphantsi kakhulu. kufutshane no-zero.

Umsebenzi

Umsebenzi we-sensor kukumisela ulwazi malunga nokuba kukho i-oksijeni engaphezulu kwi-exhaust emva kokutshiswa kwe-injini, oko kukuthi, umxholo we-oksijini, kwaye uguqule umxholo we-oksijini ube ngumqondiso we-voltage kwaye uyithumele kwikhompyutheni ye-injini, ngoko ke ukuba i-injini inokuqonda ulawulo lwe-loop evaliweyo kunye nomoya ogqithisileyo njengento ekujoliswe kuyo;ukuqinisekisa;Isiguquli se-catalytic esineendlela ezintathu sineyona ndlela isebenzayo yokuguqula izinto ezintathu ezingcolisa i-hydrocarbons (HC), i-carbon monoxide (CO) kunye ne-nitrogen oxides (NOX) kwigesi yokukhupha, kwaye yandisa ukuguqulwa kunye nokucocwa kwezinto ezingcolileyo.

Injongo

Izinzwa zeoksijini zisetyenziswa kakhulu kumashishini afana nepetroleum, iikhemikhali, amalahle, isinyithi, ukwenza iphepha, ukukhuselwa komlilo, ulawulo lukamasipala, iyeza, iimoto, kunye nokubeka iliso kokuphuma kwegesi.

I-YASEN yingcali yeshishini lokuvelisa kwimveliso ye-VM ye-oxygen sensors, ukuba ufuna ukuyi-odola, wamkelekile ukuba uqhagamshelane nathi!