I-Nitrogen oxides (NOx) zingcoliseko eziyingozi eziveliswa ngokutshiswa kwamafutha efosili kwizithuthi kunye neenkqubo zoshishino.Ezi zinto zingcolisayo zinokuchaphazela kakubi impilo yabantu kunye nokusingqongileyo, zibangele iingxaki zokuphefumla kunye nokwakheka komsi.Ukunciphisa ukukhutshwa kwe-nitrogen oxide, izithuthi ezininzi kunye nezixhobo zemizi-mveliso zixhotyiswe nge-nitrogen oxide sensors ukujonga nokulawula ezi zinto zingcolileyo.
Izinzwa ze-nitrogen oxide ziyinxalenye ebalulekileyo yeenkqubo zokulawula ukukhutshwa kwanamhlanje njengoko zinceda ukuqinisekisa ukuba izithuthi kunye nezixhobo zoshishino zisebenza ngaphakathi kwemida yokulawula.Ezi zivamvo zisebenza ngokubona ukuxinana kwee-nitrogen oxides ekukhupheni kunye nokubonelela ngengxelo kwinkqubo yokulawula injini, ukuyivumela ukuba yenze uhlengahlengiso ukuze kuphuculwe ukutsha kunye nokunciphisa ukukhutshwa kwenitrogen oxide.
Kukho iintlobo ezininzi ezahlukeneyo ze-NOx sensors, kuquka i-chemiluminescence sensors kunye ne-electrochemical sensors.Izinzwa ze-Chemiluminescence zisebenza ngokulinganisa ukukhanya okukhutshwe ngexesha lokuphendula kweekhemikhali phakathi kwe-nitrogen oxides kunye neegesi ezisebenzayo, ngelixa i-electrochemical sensors isebenzisa ukuphendulwa kweekhemikhali ukuvelisa umqondiso wombane ohambelana ne-nitrogen oxide concentration.
Enye yeengxaki eziphambili ekuyileni i-NOx sensors iqinisekisa ukuchaneka kwabo kunye nokuthembeka ekuboneni amanqanaba aphantsi e-NOx kwiigesi ezinzima zokukhupha.Ukongezelela, abenzi boluvo kufuneka bakwazi ukujamelana namaqondo okushisa aphezulu kunye neemeko ezinzima ezifunyenwe kwinkqubo yokukhupha, okwenza kube yinto ebalulekileyo kwiinkqubo zokulawula ukukhutshwa.
Kwiminyaka yakutshanje, ukuqhubela phambili kwitekhnoloji ye-sensor kuye kwakhokelela ekuphuhlisweni kwezinzwa ze-NOx eziphucukileyo kunye nezibukhali.Ngokomzekelo, ezinye iinzwa ngoku ziquka i-selective catalytic reduction (SCR) catalysts, enokukhetha ukunciphisa i-nitrogen oxides kwi-nitrogen kunye namanzi usebenzisa i-agent zokunciphisa ezifana ne-ammonia.Oku kuvumela ulawulo oluchanekileyo ngakumbi lokukhutshwa kwe-NOx, ngakumbi kwiinjini ze-diesel, ezaziwa ngokuvelisa amanqanaba aphezulu e-NOx.
Ukongezelela, ukuqaliswa kweemfuno zokuxilonga kwisithuthi (i-OBD) kuye kwakhuthaza ukuphuhliswa kweenzwa ze-NOx eziyinkimbinkimbi.Ezi zinzwa ngoku ziyakwazi ukubonelela ngedatha yexesha langempela kwinkqubo ye-OBD yesithuthi, ukuvumela ukubeka iliso ngokuchanekileyo kunye nokunika ingxelo ye-NOx emissions.Oku kunceda ukuqinisekisa ukuba isithuthi siyahambelana nemigangatho yokukhutshwa kunye nokunceda ukuchonga nayiphi na imiba enokubakho kunye nenkqubo yokulawula i-emissions.
Njengoko oorhulumente behlabathi beqhubeka beqinisa imimiselo ekukhutshweni kwe-NOx, imfuno yeenzwa ezithembekileyo nezichanekileyo ze-NOx kulindeleke ukuba zikhule.Oku kuye kwakhokelela ekwandiseni uphando kunye nophuhliso kwi-teknoloji ye-sensor egxininise ekuphuculeni ukusebenza kwenzwa, ukuqina kunye nokuphumelela kweendleko.
Ekugqibeleni, i-NOx sensors idlala indima ebalulekileyo ekunciphiseni ukukhutshwa okuyingozi kwizithuthi kunye nezixhobo zoshishino.Njengoko iteknoloji ye-sensor iqhubela phambili, ezi zinzwa zichaneka ngakumbi, zithembeke kwaye ziphucukile, zivumela ukulawula okungcono kunye nokubeka iliso lokukhutshwa kwe-NOx.Njengoko ukubaluleka kokunciphisa ukukhutshwa kwe-NOx kuqhubeka nokunyuka, ukuphuhliswa kwe-NOx sensors eziphambili kuya kunceda ukufezekisa ucoceko, umgangatho womoya onempilo kwizizukulwana ezizayo.
Ixesha lokuposa: Dec-09-2023