Inzwa ye-nitrogen oxygen (NOx sensor) inzwa esetshenziselwa ukuthola okuqukethwe kwe-nitrogen oxides (NOx) njenge-N2O, cha, NO2, N2O3, N2O4 kanye ne-N2O5 ekukhishweni kwenjini.Ngokusho kwesimiso sokusebenza, ingahlukaniswa ngama-electrochemical, optical nezinye izinzwa ze-NOx.Ukusebenzisa ukuqhutshwa kwe-solid electrolyte yttrium oxide doped zirconia (YSZ) impahla ye-ceramic kuma-ion oksijini, ukuzwela okukhethiwe kwe-electrode ekhethekile ye-NOx ku-NOx gas, futhi kuhlanganiswe nesakhiwo senzwa ekhethekile ukuthola isignali kagesi ye-NOx, ekugcineni, kusetshenziswa. ukutholwa kwesignali ebuthakathaka okukhethekile kanye nobuchwepheshe obunembayo bokulawula i-elekthronikhi, igesi ye-NOx ekukhishweni kwemoto iyatholwa futhi iguqulelwe kumasiginali wedijithali webhasi le-CAN.
Umsebenzi we-nitrogen oxygen sensor
- Ibanga lokulinganisa le-NOx: 0-1500 / 2000 / 3000ppm NOx
- Ibanga lesilinganiso se-O2: 0 – 21%
- Ukushisa okuphezulu kwegesi yokukhipha amandla: 800 ℃
- ingasetshenziswa ngaphansi kwe-O2 (21%), HC, Co, H2O (< 12%)
- isikhombikubona sokuxhumana: can
Inkambu yohlelo lokusebenza yenzwa ye-NOx
- Injini ye-diesel exhaust emission SCR system (ehlangabezana namazinga e-National IV, V kanye ne-VI emission)
- Injini kaphethiloli exhaust igesi uhlelo lokwelapha
- i-desulfurization kanye nokutholwa kwe-denitration kanye nohlelo lokulawula lwesitshalo samandla
Ukwakhiwa kwenzwa ye-nitrogen oxygen
Izingxenye eziyinhloko zenzwa ye-NOx yizingxenye ezibucayi ze-ceramic kanye nezingxenye ze-SCU
Inzwa ye-NOx
Ngenxa yendawo ekhethekile yokusetshenziswa komkhiqizo, i-ceramic chip ithuthukiswa ngesakhiwo se-electrochemical.Isakhiwo siyinkimbinkimbi, kodwa isignali yokuphumayo izinzile, isivinini sokuphendula siyashesha, futhi impilo yesevisi yinde.Umkhiqizo uhlangabezana nokuqapha kokuqukethwe kwe-NOx ekhishwayo ohlelweni lokukhipha umoya wezimoto zikadizili.Izingxenye ezizwelayo ze-ceramic ziqukethe izimbotshana eziningi ze-ceramic zangaphakathi, ezifaka i-zirconia, i-alumina kanye nezinhlobonhlobo ze-Pt metal conductive pastes.Inqubo yokukhiqiza iyinkimbinkimbi, ukunemba kokuphrinta kwesikrini kuyadingeka, futhi izidingo ezifanayo zefomula yezinto ezibonakalayo / ukuzinza kanye nenqubo ye-sintering ziyadingeka.
Njengamanje, kunezinzwa ezintathu ezijwayelekile ze-NOx emakethe: iphinikhodi eyisicaba, iphini elinesine nesikwele
Inzwa ye-NOx ingakwazi ukuxhumana
Inzwa ye-NOx ixhumana ne-ECU noma i-DCU ngokusebenzisa ukuxhumana kwe-can.Umhlangano we-NOx uhlanganiswe ngaphakathi nesistimu yokuzihlola (inzwa ye-nitrogen ne-oksijeni ingaqedela lesi sinyathelo ngokwayo ngaphandle kokudinga i-ECU noma i-DCU ukubala ukuhlushwa kwe-nitrogen ne-oxygen).Iqapha isimo sayo sokusebenza futhi ibuyisele isignali yokuhlushwa ye-NOx ku-ECU noma i-DCU ngebhasi lokuxhumana lomzimba.
Izinyathelo zokuphepha zokufakwa kwenzwa ye-NOx
I-NOx sensor probe izofakwa engxenyeni engenhla ye-catalyst ye-exhaust pipe, futhi i-sensor probe ngeke ibekwe endaweni ephansi kakhulu ye-catalyst.Vimbela i-nitrogen oxygen probe ukuthi ingaqhekeki lapho ihlangana namanzi.Indawo yokufakwa kweyunithi yokulawula inzwa ye-nitrogen oxygen: faka iyunithi yokulawula iqonde phezulu ukuze uyivimbele kangcono.Izidingo zokushisa zeyunithi yokulawula inzwa ye-NOx: inzwa ye-nitrogen ne-oxygen akufanele ifakwe ezindaweni ezinezinga lokushisa eliphezulu kakhulu.Kunconywa ukuba uqhele epayipini lokukhipha futhi eduze nethangi le-urea.Uma inzwa ye-oxygen kufanele ifakwe eduze kwepayipi le-exhaust kanye nethangi le-urea ngenxa yesakhiwo semoto yonke, isivikelo sokushisa kanye nokotini wokushisa ukushisa kufanele kufakwe, futhi izinga lokushisa elizungeze indawo yokufaka kufanele lihlolwe.Izinga lokushisa elingcono kakhulu lokusebenza alikho ngaphezu kuka-85 ℃.
Umsebenzi wokuvikela iphuzu lamazolo: ngoba i-electrode yenzwa ye-NOx idinga izinga lokushisa eliphakeme ukuze isebenze, inzwa ye-NOx inesakhiwo se-ceramic ngaphakathi.I-Ceramics ayikwazi ukuthinta amanzi lapho izinga lokushisa liphezulu, futhi kulula ukunwetshwa futhi linciphe uma lihlangana namanzi, okuholela ekuqhekekeni kwe-ceramic.Ngakho-ke, inzwa ye-NOx izobe ifakwe umsebenzi wokuvikela amazolo, okumele ulinde isikhathi esithile ngemva kokuthola ukuthi izinga lokushisa lombhobho wokukhipha lifinyelela inani elibekiwe.I-ECU noma i-DCU icabanga ukuthi ngaphansi kwezinga lokushisa eliphezulu kangaka, ngisho noma kukhona amanzi ku-NOx sensor, izoshaywa umoya yi-high-temperature exhaust gas.
Ukutholwa nokuxilongwa kwenzwa ye-NOx
Uma inzwa ye-NOx isebenza ngokujwayelekile, ithola inani le-NOx epayipini lokukhipha umoya ngesikhathi sangempela bese iyibuyisela ku-ECU / DCU ngebhasi le-CAN.I-ECU ayihluleli ukuthi i-exhaust ifanelekile yini ngokuthola inani le-NOx lesikhathi sangempela, kodwa ithola ukuthi inani le-NOx kupayipi lokukhipha umoya liyaledlula yini izinga ngesethi yohlelo lokuqapha lwe-NOx.Ukuze usebenzise ukutholwa kwe-NOx, lezi zimo ezilandelayo kufanele zihlangatshezwe:
Isistimu yamanzi okupholisa isebenza ngokujwayelekile ngaphandle kwamakhodi amaphutha.Ayikho ikhodi yephutha yenzwa yokucindezela kwe-ambient.
Izinga lokushisa lamanzi lingaphezu kuka-70 ℃.Ukutholwa okuphelele kwe-NOx kudinga amasampula angaba ngu-20.Ngemva kokutholwa kwe-NOx eyodwa, i-ECU / DCU izoqhathanisa idatha eyisampula: uma inani elimaphakathi lawo wonke amanani esampula e-NOx lingaphansi kwenani elimisiwe ngesikhathi sokutholwa, ukutholwa kudlula.Uma inani elimaphakathi lawo wonke amanani esampula e-NOx likhulu kunevelu emisiwe phakathi nokutholwa, umqaphi uzorekhoda iphutha.Nokho, isibani se-mil asikhanyi.Uma ukuqapha kwehluleka izikhathi ezimbili ezilandelanayo, isistimu izobika amakhodi wephutha we-Super 5 kanye ne-super 7, futhi isibani se-mil sizokhanya.
Uma ikhodi yephutha engu-5 yeqiwe, isibani se-mil sizokhanya, kodwa i-torque ngeke ibe nomkhawulo.Uma ikhodi yephutha engu-7 yeqiwe, isibani se-mil sizokhanyiswa futhi uhlelo luzokhawulela i-torque.Umkhawulo we-torque usethwe ngumkhiqizi wemodeli.
Qaphela: noma ngabe iphutha elikhiphayo lamanye amamodeli lilungiswa, ilambu le-mil ngeke licime, futhi isimo sephutha sizovezwa njengephutha lomlando.Kulesi simo, kuyadingeka ukuxubha idatha noma wenze umsebenzi wokusetha kabusha we-NOx ophezulu.
Ngokuthembela kusipiliyoni seminyaka engu-22 yenkampani yenkampani nekhono le-software eliqinile le-R & D, u-Yunyi Electric uye wasebenzisa ithimba lochwepheshe abaphezulu basekhaya futhi wahlanganisa izinsiza zezisekelo ezintathu ze-R & D emhlabeni wonke ukuze kuzuzwe ukuqamba okusha okukhulu ekulawuleni izinzwa ze-NOx. I-algorithm yesofthiwe nokumatanisa kokulinganiswa komkhiqizo, kanye namaphuzu obuhlungu bemakethe axazululiwe, kwagqashuka ukubusa kobuchwepheshe, kwathuthukisa intuthuko ngesayensi nobuchwepheshe, kanye nekhwalithi eqinisekisiwe enobuchwepheshe.Nakuba i-Yunyi kagesi ithuthukisa ukukhiqizwa kwezinzwa ze-NOx ezingeni eliphakeme, isikali sokukhiqiza siyaqhubeka sanda, ukuze i-Yunyi nitrogen ne-oxygen izinzwa zibeka i-benchmark enhle embonini!
Isikhathi sokuthumela: Sep-02-2022