Sensor ea oksijene ea naetrojene (NOx sensor) ke sensor e sebelisetsoang ho lemoha litaba tsa nitrogen oxides (NOx) tse kang N2O, no, NO2, N2O3, N2O4 le N2O5 ka mocheso oa enjene.Ho ea ka molao-motheo oa ho sebetsa, e ka aroloa ka electrochemical, optical le tse ling tsa NOx sensors.Ho sebelisa conductivity e tiileng ea electrolyte yttrium oxide doped zirconia (YSZ) lisebelisoa tsa ceramic ho li-ion tsa oksijene, khetho ea catalytic sensitivity ea lisebelisoa tse khethehileng tsa NOx tse nang le lisebelisoa tsa motlakase ho NOx khase, le ho kopana le sebopeho se khethehileng sa sensor ho fumana letšoao la motlakase la NOx, qetellong, ho sebelisa e khethehileng ea ho lemoha matšoao a fokolang le theknoloji e nepahetseng ea taolo ea elektronike, khase ea NOx ka mosi oa koloi e fumanoa 'me e fetoloa matšoao a tloaelehileng a CAN bus digital.
Mosebetsi oa naetrojene oksijene sensor
- Mofuta oa tekanyo ea NOx: 0-1500 / 2000 / 3000ppm NOx
- Lekhalo la tekanyo ea O2: 0 - 21%
- Mocheso o phahameng oa mocheso oa khase: 800 ℃
- e ka sebelisoa tlas'a O2 (21%), HC, Co, H2O (< 12%)
- segokanyimmediamentsi sa sebolokigolo: can
Sebaka sa ts'ebeliso ea sensor ea NOx
- Sistimi ea SCR e tsoang ho enjene ea diesel (e kopanang le litekanyetso tsa tlhahiso ea National IV, V le VI)
- Sistimi ea kalafo ea khase ea enjene ea peterole
- desulfurization le denitration lemoha le tsamaiso ea taolo ea fektheri ea matla
Sebopeho sa sensor ea oksijene ea naetrojene
Likarolo tsa mantlha tsa sensor ea NOx ke likarolo tse bonolo tsa ceramic le likarolo tsa SCU
Sensor ea mantlha ea NOx
Ka lebaka la tikoloho e khethehileng ea tšebeliso ea sehlahisoa, chip ea ceramic e hlahisoa ka mohaho oa electrochemical.Sebopeho se rarahane, empa letšoao la tlhahiso le tsitsitse, lebelo la ho arabela le potlakile, 'me bophelo ba tšebeletso bo bolelele.Sehlahisoa se kopana le tlhahlobo ea litaba tsa NOx ha ho etsoa mosi oa koloi ea diesel.Likarolo tse hlokolosi tsa ceramic li na le li-cavities tse ngata tsa ka hare tsa ceramic, tse kenyelletsang zirconia, alumina le mefuta e fapaneng ea Pt series metal conductive pastes.Ts'ebetso ea tlhahiso e rarahane, ho hlokahala ho nepahala ha khatiso ea skrine, 'me litlhoko tse tsamaellanang tsa foromo ea thepa / botsitso le ts'ebetso ea sintering lia hlokahala.
Hajoale, ho na le li-sensor tse tharo tse tloaelehileng tsa NOx 'marakeng: phini e sephara e mehlano, phini e mene le lisekoere tse nne.
Sensor ea NOx e khona ho buisana
Sensor ea NOx e buisana le ECU kapa DCU ka puisano e ka khonang.Kopano ea NOx e kopantsoe ka hare le mokhoa oa ho itlhahloba (sensor ea naetrojene le oksijene e ka phethela mohato ona ka boeona ntle le ho hloka ECU kapa DCU ho bala palo ea naetrojene le oksijene).E lekola boemo ba eona ba ho sebetsa mme e khutlisetsa letšoao la mahloriso la NOx ho ECU kapa DCU ka bese ea puisano ea 'mele.
Litlhokomelo tsa ho kenya sensor ea NOx
The NOx sensor probe e tla kenngoa karolong e ka holimo ea halofo ea mokelikeli oa ho qeta phala, 'me mochine oa sensor o ke ke oa behoa sebakeng se tlaase ka ho fetisisa sa mokelikeli.Thibela pheko ea oksijene ea nitrogen hore e se ke ea peperana ha e kopana le metsi.Tataiso ea ho kenya yuniti ea taolo ea sensor ea oksijene ea nitrogen: kenya yuniti ea taolo ka kotloloho ho e thibela hamolemo.Litlhokahalo tsa mocheso oa yuniti ea taolo ea sensor ea NOx: sensor ea naetrojene le oksijene e ke ke ea kenngoa libakeng tse nang le mocheso o phahameng haholo.Ho kgothaletswa ho boloka hole le phala ea ho tima le haufi le tanka ea urea.Haeba sensor ea oksijene e tlameha ho kenngoa haufi le phala ea ho qeta le tanka ea urea ka lebaka la sebopeho sa koloi eohle, thebe ea mocheso le k'hothone ea ho kenya mocheso e tlameha ho kenngoa, 'me mocheso o potolohileng sebaka sa ho kenya o lokela ho hlahlojoa.Mocheso o motle ka ho fetisisa oa ho sebetsa ha o phahametse 85 ℃.
Ts'ebetso ea ts'ireletso ea phoka: hobane electrode ea sensor ea NOx e hloka mocheso o phahameng ho sebetsa, sensor ea NOx e na le mohaho oa ceramic ka hare.Li-ceramics ha li khone ho ama metsi a mocheso o phahameng, 'me ho bonolo ho atolosoa le ho fokotsa ha a kopana le metsi, e leng se bakang ho phunyeha ha ceramic.Ka hona, sensor ea NOx e tla ba le ts'ebetso ea ts'ireletso ea phoka, e leng ho emela nako e itseng ka mor'a ho lemoha hore mocheso oa pipe ea ho qeta o fihla ho boleng bo behiloeng.ECU kapa DCU e nahana hore tlas'a mocheso o phahameng joalo, esita le haeba ho na le metsi ho sensor ea NOx, e tla omisoa ke khase ea mocheso o phahameng oa mocheso.
Ho sibolloa le ho hlahlojoa ha sensor ea NOx
Ha sensor ea NOx e sebetsa ka mokhoa o tloaelehileng, e lemoha boleng ba NOx phala ea ho tima ka nako ea 'nete ebe e e khutlisetsa ho ECU / DCU ka bese ea CAN.ECU ha e ahlole hore na ho qeta nako ho tšoaneleha ka ho lemoha boleng ba nako ea sebele ea NOx, empa e lemoha hore na boleng ba NOx ka pipe ea ho qeta ho feta tekanyo ka sete sa lenaneo la ho hlahloba NOx.Ho tsamaisa tlhahlobo ea NOx, maemo a latelang a tlameha ho finyelloa:
Sistimi ea metsi a pholileng e sebetsa ka tloaelo ntle le likhoutu tsa phoso.Ha ho na khoutu ea phoso bakeng sa sensor ea khatello ea ambient.
Mocheso oa metsi o ka holimo ho 70 ℃.Tlhahlobo e felletseng ea NOx e hloka lisampole tse ka bang 20.Ka mor'a ho fumanoa ha NOx e le 'ngoe, ECU / DCU e tla bapisa data ea sampole: haeba boleng bo tloaelehileng ba litekanyetso tsohle tsa NOx tsa sampole bo le tlase ho boleng bo behiloeng nakong ea ho lemoha, ho lemoha ho feta.Haeba boleng bo tloaelehileng ba litekanyetso tsohle tsa sampole tsa NOx bo le boholo ho feta boleng bo behiloeng nakong ea tlhahlobo, sebali se tla tlaleha phoso.Leha ho le joalo, lebone la mil ha le laetsoe.Haeba tlhahlobo e hloleha ka makhetlo a mabeli a latellanang, sistimi e tla tlaleha likhoutu tsa phoso tsa Super 5 le super 7, 'me lebone la mil le tla bulela.
Ha khoutu ea phoso ea 5 e fetisitsoe, lebone la mil le tla be le le teng, empa torque e ke ke ea lekanyetsoa.Ha khoutu ea phoso ea 7 e fetisitsoe, lebone la mil le tla buloa 'me tsamaiso e tla fokotsa torque.Moeli oa torque o behiloe ke moetsi oa mohlala.
Tlhokomeliso: le haeba phoso ea ho hlahisa mefuta e meng e lokisoa, lebone la mil le ke ke la tima, 'me boemo ba phoso bo tla bontšoa e le phoso ea histori.Tabeng ena, hoa hlokahala ho senya data kapa ho etsa mosebetsi o phahameng oa ho tsosolosa NOx.
E itšetlehile ka lilemo tse 22 tsa phihlelo ea indasteri ea k'hamphani le bokhoni bo matla ba software ea R & D, Yunyi Electric o sebelisitse sehlopha sa litsebi tse ka sehloohong tsa lehae mme a kopanya lisebelisoa tsa metheo e meraro ea R & D ho pota lefatše ho finyella mekhoa e mecha ea ho laola NOx sensor. algorithm ea software le matching ea calibration ea lihlahisoa, le lintlha tse bohloko tsa 'maraka tse rarollotsoeng, li ile tsa phunyeletsa puso ea theknoloji, tsa khothalletsa tsoelo-pele ka saense le theknoloji, le boleng bo tiisitsoeng ka botsebi.Le hoja motlakase oa Yunyi o ntlafatsa tlhahiso ea li-sensor tsa NOx ho ea boemong bo phahameng, tekanyo ea tlhahiso e ntse e tsoela pele ho atoloha, e le hore lisebelisoa tsa Yunyi tsa naetrojene le oksijene li behe tekanyo e ntle lefapheng lena!
Nako ea poso: Sep-02-2022