Nitrogen oxides (NOx) ndi zowononga zowononga zomwe zimapangidwa ndi kuyaka kwamafuta oyambira m'magalimoto ndi mafakitale.

Nayitrogeni oxides (NOx) ndi zowononga zowononga zomwe zimapangidwa ndi kuyaka kwamafuta oyambira m'magalimoto ndi mafakitale.Zoipitsazi zimatha kusokoneza thanzi la anthu komanso chilengedwe, zomwe zimapangitsa kuti pakhale vuto la kupuma komanso kupanga utsi.Pofuna kuchepetsa mpweya wa nitrogen oxide, magalimoto ambiri ndi zida zamafakitale zimakhala ndi masensa a nitrogen oxide kuti aziyang'anira ndikuwongolera zowononga izi.

Masensa a nitrogen oxide ndi gawo lofunika kwambiri la machitidwe amakono owongolera mpweya chifukwa amathandizira kuonetsetsa kuti magalimoto ndi zida zamafakitale zimagwira ntchito molingana ndi malamulo.Masensawa amagwira ntchito pozindikira kuchuluka kwa ma nitrogen oxides mu utsi ndikupereka mayankho ku makina owongolera injini, kuwalola kuti asinthe kuti azitha kuyaka bwino komanso kuchepetsa mpweya wa nitrogen oxide.

Pali mitundu yambiri yosiyanasiyana ya masensa a NOx, kuphatikizapo chemiluminescence sensors ndi electrochemical sensors.Masensa a Chemiluminescence amagwira ntchito poyesa kuwala komwe kumatulutsa panthawi yamankhwala pakati pa ma nitrogen oxides ndi mpweya wotuluka, pomwe masensa a electrochemical amagwiritsa ntchito kusintha kwamankhwala kuti apange chizindikiro chamagetsi chofanana ndi kuchuluka kwa nitrogen oxide.

Chimodzi mwazovuta kwambiri popanga masensa a NOx ndikuwonetsetsa kulondola kwawo komanso kudalirika kwawo pakuzindikira milingo yotsika ya NOx mumipweya yovuta.Kuphatikiza apo, masensa amayenera kupirira kutentha kwambiri komanso zovuta zomwe zimapezeka muutsi, kuwapangitsa kukhala gawo lofunikira kwambiri pamakina owongolera mpweya.

M'zaka zaposachedwa, kupita patsogolo kwaukadaulo wa sensa kwapangitsa kuti pakhale zotsogola komanso zovuta kwambiri za NOx.Mwachitsanzo, masensa ena tsopano akuphatikiza zopangira zochepetsera (SCR), zomwe zimatha kuchepetsa ma nitrogen oxide kukhala nayitrogeni ndi madzi pogwiritsa ntchito zochepetsera monga ammonia.Izi zimalola kuwongolera bwino kwa mpweya wa NOx, makamaka mu injini za dizilo, zomwe zimadziwika kuti zimapanga milingo yayikulu ya NOx.

Kuphatikiza apo, kuyambika kwa zofunikira zamagalimoto a onboard diagnostics (OBD) kwalimbikitsa kupanga masensa apamwamba kwambiri a NOx.Masensa awa tsopano akutha kupereka zenizeni zenizeni ku dongosolo la OBD lagalimoto, kulola kuwunika kolondola komanso kupereka malipoti a mpweya wa NOx.Izi zimathandiza kuonetsetsa kuti galimotoyo ikutsatira miyezo yotulutsa mpweya komanso zimathandizira kuzindikira zovuta zilizonse zomwe zingachitike ndi dongosolo lowongolera mpweya.

Pamene maboma padziko lonse lapansi akupitiriza kukhwimitsa malamulo okhudza mpweya wa NOx, kufunikira kwa masensa odalirika komanso olondola a NOx akuyembekezeka kukula.Izi zapangitsa kuti kafukufuku achuluke komanso chitukuko chaukadaulo wa masensa omwe amayang'ana kwambiri pakuwongolera magwiridwe antchito, kulimba komanso kutsika mtengo.

Pomaliza, masensa a NOx amagwira ntchito yofunika kwambiri pochepetsa mpweya woipa wa magalimoto ndi zida zamafakitale.Pamene teknoloji ya sensa ikupita patsogolo, masensawa amakhala olondola, odalirika komanso apamwamba, zomwe zimalola kuwongolera bwino komanso kuyang'anira mpweya wa NOx.Pamene kufunikira kochepetsera mpweya wa NOx kukukulirakulirabe, chitukuko cha masensa apamwamba a NOx chidzathandiza kukwaniritsa mpweya wabwino, wathanzi kwa mibadwo yotsatira.