Inzwa ye-nitrogen ye-oksijini (i-NOx sensor) yinzwa esetyenziselwa ukufumanisa umxholo we-nitrogen oxides (NOx) njenge-N2O, akukho, NO2, N2O3, N2O4 kunye ne-N2O5 kwi-injini yokukhupha. Ngokomgaqo wokusebenza, unokwahlulwa ube yi-electrochemical, optical kunye nezinye i-NOx sensors. Ukusebenzisa i-conductivity ye-electrolyte eqinile ye-yttrium oxide doped zirconia (YSZ) izinto ze-ceramic kwii-ion ze-oksijini, i-catalytic sensitivity ye-NOx ekhethekileyo yezinto eziphathekayo ze-electrode kwi-NOx igesi, kunye nokudibanisa nesakhiwo senzwa esikhethekileyo ukufumana umqondiso wombane we-NOx, ekugqibeleni, usebenzisa ukufumanisa umqondiso obuthathaka okhethekileyo kunye ngokuchanekileyo iteknoloji yokulawula i-elektroniki, i-NOx yegesi yegesi kwi-mobile exhaust exhaust exhaust.
Umsebenzi we-nitrogen oxygen sensor
- Uluhlu lokulinganisa lwe-NOx: 0-1500 / 2000 / 3000ppm NOx
Uluhlu lomlinganiselo we-O2: 0 – 21%
Ubushushu obuninzi berhasi yokukhupha: 800 ℃
- ingasetyenziswa phantsi kwe-O2 (21%), HC, Co, H2O (< 12%)
-Unxibelelwano lonxibelelwano: unako
Intsimi yesicelo se-NOx sensor
-Injini ye-diesel yokukhupha inkqubo ye-SCR (edibana nemigangatho yeSizwe ye-IV, i-V kunye ne-VI)
-injini yepetroli yokukhupha inkqubo yonyango yegesi
- desulfurization kunye denitration ubhaqo kunye nenkqubo yolawulo lweplanti yamandla
Ukuqulunqwa kwenzwa ye-nitrogen oxygen
Amacandelo aphambili e-NOx sensor ngamacandelo e-ceramic abuthathaka kunye namacandelo e-SCU
Undoqo we-NOx sensor
Ngenxa yendawo ekhethekileyo yokusetyenziswa kwemveliso, i-chip ye-ceramic iphuhliswa ngesakhiwo se-electrochemical. Isakhiwo sinzima, kodwa umqondiso wokuphuma uzinzile, isantya sokuphendula sikhawuleza, kwaye ubomi benkonzo bude. Imveliso idibana nokujongwa komxholo we-NOx wokukhutshwa kwinkqubo yokukhupha idizili yesithuthi. Iindawo ezibuthathaka ze-ceramic zinemingxuma emininzi ye-ceramic yangaphakathi, ebandakanya i-zirconia, i-alumina kunye neentlobo ezahlukeneyo ze-Pt ze-metal conductive pastes. Inkqubo yokuvelisa inzima, ukuchaneka koshicilelo lwesikrini kuyafuneka, kunye neemfuno ezihambelanayo zefomula yezinto eziphathekayo / uzinzo kunye nenkqubo yokubhala iyafuneka.
Okwangoku, kukho izinzwa ezintathu eziqhelekileyo ze-NOx kwimarike: iphini ezintlanu, iphini elinesine kunye nesikwere ezine.
Inzwa ye-NOx inokunxibelelana
Inzwa ye-NOx inxibelelana ne-ECU okanye i-DCU ngonxibelelwano lwe-can. Indibano ye-NOx idityaniswe ngaphakathi kunye ne-self-diagnostic system (i-nitrogen kunye ne-oxygen sensor inokugqiba eli nyathelo ngokwayo ngaphandle kokufuna i-ECU okanye i-DCU ukubala i-nitrogen kunye ne-oxygen concentration). Ibeka iliso kwimeko yayo yokusebenza kwaye iphinde isondle isignali ye-NOx yoxinaniso kwi-ECU okanye i-DCU ngebhasi yokunxibelelana komzimba.
Izilumkiso zokufakelwa kwenzwa ye-NOx
I-NOx sensor probe iya kufakwa kwisiqingatha esiphezulu se-catalyst ye-exhaust pipe, kwaye i-sensor probe ayiyi kufumaneka kwindawo ephantsi ye-catalyst. Thintela i-nitrogen oxygen probe ekuqhekekeni xa idibana namanzi. Ulwalathiso lofakelo lweyunithi yokulawula isivamvo se-nitrogen oksijini: faka iyunithi yolawulo ngokuthe nkqo ukuyithintela ngcono. Iimfuno zobushushu zeyunithi yokulawula i-NOx sensor: i-nitrogen kunye ne-oxygen sensor ayiyi kufakwa kwiindawo ezinokushisa okuphezulu kakhulu. Kunconywa ukuba ugcine kude nombhobho wokukhupha kunye kufuphi netanki ye-urea. Ukuba i-sensor ye-oksijeni kufuneka ifakwe kufuphi nombhobho wokukhupha kunye netanki ye-urea ngenxa yokwakheka kwesithuthi sonke, isikhuselo sokushisa kunye nekotoni yokushisa ukushisa kufuneka ifakwe, kwaye ubushushu obujikeleze indawo yokufakela kufuneka buhlolwe. Elona qondo lobushushu lisebenzayo alikho ngaphezulu kwe-85 ℃.
Umsebenzi wokukhusela amazolo: kuba i-electrode ye-NOx sensor idinga ukushisa okuphezulu ukuze isebenze, i-sensor ye-NOx inesakhiwo se-ceramic ngaphakathi. I-Ceramics ayinakuchukumisa amanzi kwiqondo lokushisa eliphezulu, kwaye kulula ukwandisa kunye nenkontileka xa idibana namanzi, okukhokelela ekuqhekekeni kwe-ceramic. Ngako oko, i-sensor ye-NOx iya kuxhotyiswa ngomsebenzi wokukhusela umbethe, okufuneka ulinde ixesha elithile emva kokubona ukuba ukushisa kombhobho wokukhupha kufikelela kwixabiso elimiselweyo. I-ECU okanye i-DCU icinga ukuba phantsi kobushushu obuphezulu, nokuba kukho amanzi kwi-NOx sensor, iya kutshitshiswa yome ngegesi ephezulu yokushisa.
Ukufunyanwa kunye nokuxilongwa kwe-NOx sensor
Xa i-sensor ye-NOx isebenza ngokuqhelekileyo, ibona ixabiso le-NOx kumbhobho wokukhupha ngexesha langempela kwaye libuyisele kwi-ECU / DCU ngebhasi ye-CAN. I-ECU ayigwebi ukuba i-exhaust ifanelekile ngokubona ixabiso le-NOx lexesha langempela, kodwa ibona ukuba ixabiso le-NOx kumbhobho wokukhupha lidlula umgangatho ngokusebenzisa isethi yenkqubo yokubeka iliso ye-NOx. Ukwenza ubhaqo lwe-NOx, le miqathango ilandelayo kufuneka ifezekiswe:
Inkqubo yamanzi okupholisa isebenza ngokuqhelekileyo ngaphandle kweekhowudi zeempazamo. Akukho khowudi yempazamo kwinzwa yoxinzelelo lwe-ambient.
Ubushushu bamanzi bungaphezulu kwama-70 ℃. Ukufunyaniswa okupheleleyo kwe-NOx kufuna malunga neesampuli ezingama-20. Emva kokufunyanwa kwe-NOx enye, i-ECU / i-DCU iya kuthelekisa idatha yesampula: ukuba ixabiso eliqhelekileyo lazo zonke iisampuli ze-NOx zesampulu lingaphantsi kwexabiso elimiselweyo ngexesha lokufumanisa, ukufumanisa kudlula. Ukuba ixabiso eliphakathi kwawo onke amaxabiso e-NOx esampuli likhulu kunexabiso elibekiweyo ngexesha lokubona, iliso liya kurekhoda impazamo. Nangona kunjalo, isibane semil asivulwanga. Ukuba ukubekwa esweni akuphumeleli amaxesha amabini alandelelanayo, inkqubo iya kuxela i-Super 5 kunye ne-super 7 fault codes, kwaye isibane se-mil siya kukhanyisa.
Xa ikhowudi ye-fault ye-5 idlulile, isibane se-mil siya kuba, kodwa i-torque ayiyi kunqunyulwa. Xa ikhowudi ye-fault ye-7 idlulile, isibane se-mil siya kuvulwa kwaye inkqubo iya kunciphisa i-torque. Umda we-torque ubekwe ngumenzi wemodeli.
Qaphela: nokuba i-emission overrun fault yeminye imodeli ilungisiwe, isibane semil asiyi kucima, kwaye imeko yempazamo iya kuboniswa njengempazamo yembali. Kule meko, kuyimfuneko ukuxubha idatha okanye ukwenza umsebenzi ophezulu wokuseta kwakhona i-NOx.
Ukuxhomekeka kwinkampani ye-22 yeminyaka yamava oshishino kunye ne-software eyomeleleyo ye-R & D, u-Yunyi Electric uye wasebenzisa iqela leengcali eziphezulu zasekhaya kwaye wadibanisa izibonelelo zeziseko ezintathu ze-R & D emhlabeni jikelele ukuphumeza i-innovation enkulu kwi-NOx yokulawula i-software ye-software ye-algorithm kunye nokulinganisa imveliso yokulinganisa, kunye namanqaku asombululweyo eentlungu zemarike, aphule iteknoloji yodwa, akhuthaze uphuhliso kunye nomgangatho oqinisekisiweyo wesayensi kunye nobuchwephesha. Ngoxa i-Yunyi yombane iphucula ukuveliswa kweenzwa ze-NOx kwizinga eliphezulu, umlinganiselo wemveliso uyaqhubeka nokwandisa, ukuze i-Yunyi nitrogen kunye ne-oxygen sensors ibeke i-benchmark efanelekileyo kwishishini!
Ixesha lokuposa: Sep-02-2022