Emkhakheni wamaloli athwala kanzima, kunezingxenye eziningi ezidlala indima ebalulekile ekuqinisekiseni ukuthi imoto isebenza kahle futhi ihlangabezana nemithetho yemvelo.Enye ingxenye enjalo inzwa ye-nitrogen oxide, eqapha futhi ilawule amazinga e-nitrogen oxide (NOx) akhishwa injini yeloli.Kule bhulogi, sizobhekisisa ukubaluleka kwezinzwa zeloli ze-NOx nomthelela wazo ekusebenzeni kwemoto kanye nemvelo.
Izinzwa ze-nitrogen oxide ziyingxenye ebalulekile yesistimu yokulawula ukungcola kweloli.Basebenza ngokulinganisa ukugcwala kwegesi ye-nitrogen oxide ku-exhaust stream futhi bathumele leyo datha kuyunithi yokulawula injini yeloli (ECU).I-ECU ibe isisebenzisa lolu lwazi ukulungisa ingxube yamafutha omoya futhi yandise inqubo yokuvutha, ekugcineni inciphise inani le-nitrogen oxide ekhishwayo emkhathini.
Enye yezinzuzo eziyinhloko zezinzwa ze-NOx ukuthi zisiza amaloli ukuthi ahambisane nezindinganiso eziqinile zokukhipha umoya.Njengoba imithetho yezemvelo iba namandla kakhulu, abakhiqizi bamaloli bangaphansi kwengcindezi yokunciphisa ukungcola okuyingozi okukhishwa izimoto zabo.Izinzwa ze-NOx zinika amandla amaloli ukuthi ahlangabezane nalawa mazinga ngokuqhubeka nokuqapha nokulawula amazinga e-NOx, ngaleyo ndlela anciphise umthelela wemvelo wokusebenza kwawo.
Ngaphezu kwezinzuzo zemvelo, izinzwa ze-NOx zisiza ukuthuthukisa ukusebenza kahle kanye nokusebenza kahle kweloli lakho.Ngokuhlinzeka ngedatha yesikhathi sangempela ngamaleveli e-nitrogen oxide, lezi zinzwa zivumela i-ECU ukuthi yenze izinguquko ezinembile ekusebenzeni kwenjini, ngaleyo ndlela ithuthukise ukonga kukaphethiloli futhi yehlise ukuguga kwenjini.Lokhu akugcini nje ngokuyilungele imvelo, kodwa futhi konga imali yabashayeli bamaloli ngendlela yokunciphisa ukusetshenziswa kukaphethiloli kanye nezindleko zokuwunakekela.
Ukwengeza, izinzwa ze-NOx zidlala indima ebalulekile ekuqinisekiseni ukuthi amaloli afakwe uhlelo olusebenzayo lwe-Selective Catalytic Reduction (SCR).Amasistimu e-SCR asebenzisa ama-catalysts ukuguqula igesi ye-nitrogen oxide ibe i-nitrogen engenangozi nomhwamuko wamanzi.Kodwa-ke, ukuze uhlelo lwe-SCR lusebenze kahle, luthembele ekufundweni kwenzwa ye-NOx enembile ukuze kulungiswe umthamo we-diesel exhaust fluid (DEF) ejovwe emfudlaneni wokukhipha umoya.Ngaphandle kwenzwa ye-NOx enokwethenjelwa, ukusebenza kahle kwesistimu ye-SCR kuzophazamiseka, okuholela ekwandeni kokukhishwa kwe-NOx kanye nokungahle kube nokungahambisani nemithetho yokukhishwa.
Kubalulekile kubaqhubi bamaloli nabaphathi bemikhumbi ukuthi babone ukubaluleka kwezinzwa ze-NOx futhi babeke phambili ukugcinwa kwazo nokushintshwa kwazo lapho kudingekile.Ngokuhamba kwesikhathi, izinzwa ze-NOx zingangcoliswa noma zehluleke ngenxa yokuchayeka emazingeni okushisa aphezulu nezimo zokusebenza ezinzima.Ukuhlolwa njalo kanye nokushintshwa kwalezi zinzwa kubalulekile ukuze uqinisekise ukuthi iloli lakho liyaqhubeka nokusebenza kahle futhi lihlangabezana nezindinganiso zokukhipha umoya.
Kafushane, izinzwa zeloli ze-NOx ziyingxenye ebalulekile yokunciphisa ukukhishwa okuyingozi okuvela ezimotweni ezisindayo.Ngokuqhubeka nokuqapha nokulawula amazinga e-nitrogen oxide, lezi zinzwa azisizi nje kuphela amaloli ukuthi ahambisane nemithetho yemvelo kodwa futhi zisiza ukuthuthukisa ukusebenza nokusebenza kahle.Njengoba imboni yezokuthutha iqhubeka nokubeka phambili ukusimama, indima yezinzwa ze-NOx ekunciphiseni umthelela wemvelo wamaloli ayikwazi ukubukelwa phansi.Abaqhubi bamaloli kufanele baqonde ukubaluleka kwalezi zinzwa futhi batshale imali ekunakekeleni nasekugcinweni ngendlela efanele ukuze kuzuze ukusebenza kwabo kanye nendawo ezungezile.
Isikhathi sokuthumela: Mar-30-2024