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 kwi-ion ze-oksijini, uvakalelo olukhethiweyo lwe-catalytic yezinto ezikhethekileyo ze-NOx ezithintekayo ze-electrode kwi-NOx igesi, kunye nokudibanisa nesakhiwo senzwa ekhethekileyo ukufumana umqondiso wombane we-NOx, ekugqibeleni, usebenzisa. ukufumanisa umqondiso obuthathaka okhethekileyo kunye nobuchwepheshe obuchanekileyo bokulawula i-elektroniki, igesi ye-NOx kwi-exhaust yemoto ichongiwe kwaye iguqulelwe kwiimpawu eziqhelekileyo ze-CAN zebhasi yedijithali.
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.Ngoko ke, i-sensor ye-NOx iya kuxhotyiswa ngomsebenzi wokukhusela umbethe, omele 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 ngokufumanisa 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 yeqela leminyaka engama-22 yamava oshishino kunye nesoftware eyomeleleyo ye-R & D, uYunyi Electric uye wasebenzisa iqela leengcali eziphezulu zasekhaya kwaye wadibanisa izibonelelo zeziseko ezintathu ze-R & D kwihlabathi jikelele ukufezekisa ukutsha okukhulu kulawulo lwe-NOx sensor. I-algorithm yesoftware kunye nokulinganisa ukulinganisa imveliso, kwaye yasonjululwa amanqaku eentlungu zemarike, yaqhekeza iteknoloji eyodwa, yakhuthaza uphuhliso lwesayensi kunye nobuchwepheshe, kunye nomgangatho oqinisekisiweyo wobugcisa.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