A nitrogen oxygen sensor (NOx sensor) inzwa inoshandiswa kuona zvinyorwa zve nitrogen oxides (NOx) zvakadai seN2O, kwete, NO2, N2O3, N2O4 uye N2O5 mumhepo inopera injini.Zvinoenderana nemusimboti wekushanda, inogona kukamurwa kuita electrochemical, optical uye mamwe NOx sensors.Uchishandisa conductivity yakasimba electrolyte yttrium oxide doped zirconia (YSZ) ceramic zvinhu kune oxygen ions, iyo inosarudzika inokonzeresa senitivity yeyakakosha NOx sensitive electrode zvinhu kune NOx gasi, uye kusanganisa neyakasiyana sensor chimiro kuwana chiratidzo chemagetsi cheNOx, pakupedzisira, uchishandisa. yakakosha isina kusimba chiratidzo chekuona uye chaiyo yemagetsi control tekinoroji, iyo NOx gasi mumotokari inopopota inoonekwa uye inoshandurwa kuita yakajairwa CAN bhazi masaini masaini.
Basa re nitrogen oxygen sensor
- NOx kuyerwa kwemhando: 0-1500 / 2000 / 3000ppm NOx
-O2 kuyerwa kwemhando: 0 - 21%
-Kunyanya kupisa gasi tembiricha: 800 ℃
- inogona kushandiswa pasi peO2 (21%), HC, Co, H2O (<12%)
-kutaurirana interface: inogona
Munda wekushandisa weNOx sensor
- dhiziri injini exhaust emission SCR system (musangano weNational IV, V uye VI emission standards)
- peturu injini inopedza gasi kurapwa system
- desulfurization uye denitration yekuona uye kudzora sisitimu yesimba rekudyara
Kuumbwa kwe nitrogen oksijeni sensor
Iwo makuru epakati zvikamu zveNOx sensor zvinhu zveceramic zvinonzwa uye zvikamu zveSCU
Core yeNOx sensor
Nekuda kwekushandiswa kwakakosha nharaunda yechigadzirwa, iyo ceramic chip inogadzirwa ine electrochemical chimiro.Chimiro chakaoma, asi chiratidzo chekubuda chakagadzikana, kukurumidza kwekupindura kunokurumidza, uye hupenyu hwesevhisi hurefu.Chigadzirwa chacho chinosangana nekutariswa kweNOx emission yemukati mukuita kwedhiziri mota exhaust emission.Iwo eceramic anonzwa zvikamu ane akawanda eceramic emukati cavities, anosanganisira zirconia, alumina uye akasiyana ePt akateedzana simbi conductive pastes.Maitiro ekugadzira akaomarara, iko kudhinda kwescreen kunodiwa, uye zvinodiwa zvekufananidza zvezvinhu formula / kugadzikana uye sintering process inodiwa.
Parizvino, pane matatu akajairwa NOx sensors pamusika: flat shanu pini, flat ina pini uye sikweya mana pini.
NOx sensor inogona kutaurirana
Iyo NOx sensor inotaurirana neECU kana DCU kuburikidza nekugona kutaurirana.Iyo NOx gungano inosanganiswa nemukati ne self diagnostic system (iyo nitrogen uye oksijeni sensor inogona kupedzisa nhanho iyi yega pasina kuda ECU kana DCU kuverenga iyo nitrogen uye oxygen concentration).Iyo inotarisisa yayo yega mamiriro ekushanda uye inodyisa iyo NOx yekumisa chiratidzo kuECU kana DCU kuburikidza nemuviri wekutaura bhazi.
Chengetedzo yekuisa NOx sensor
Iyo NOx sensor probe ichaiswa pachikamu chepamusoro cheiyo catalyst yepombi yekupedza, uye iyo sensor probe haizowanikwi panzvimbo yakaderera yecatalyst.Dzivirira nitrogen okisijeni probe kubva pakutsemuka kana wasangana nemvura.Kuisa nzira ye nitrogen okisijeni sensor control unit: isa iyo control unit yakatwasuka kuti idzivirire zvirinani.Tembiricha inodiwa yeNOx sensor control unit: iyo nitrogen uye oksijeni sensor haifaniri kuiswa munzvimbo dzine tembiricha yakanyanya.Inokurudzirwa kuchengetedza kure nepombi yekupedza uye pedyo ne urea tank.Kana iyo okisijeni sensor inofanira kuiswa pedyo nepombi yekupedza uye tangi ye urea nekuda kwekugadzirisa kwemotokari yose, chivharo chekupisa uye kupisa kwekotoni yekotoni inofanira kuiswa, uye kutonhora kwakapoteredza nzvimbo yekuisa inofanira kuongororwa.Iyo yakanyanya tembiricha yekushanda haina kukwira kupfuura 85 ℃.
Dew point kuchengetedza basa: nekuti iyo electrode yeNOx sensor inoda tembiricha yepamusoro kuti ishande, iyo NOx sensor ine ceramic chimiro mukati.Ceramics haigoni kubata mvura pakupisa kwepamusoro, uye zviri nyore kuwedzera uye kubvumirana kana yasangana nemvura, zvichiita kuti ceramic iparadze.Nokudaro, iyo NOx sensor ichave yakashongedzerwa nedova rekudzivirira basa, iyo inomirira kwenguva yakati mushure mekuona kuti kutonhora kwepombi yepombi kunosvika pakukosha kwakaiswa.ECU kana DCU inofunga kuti pasi pekupisa kwakanyanya, kunyangwe paine mvura pane NOx sensor, inopeperetswa yakaoma neyakakura-tembiricha yekupedza gasi.
Kuonekwa uye kuongororwa kweNOx sensor
Kana iyo NOx sensor ichishanda zvakajairika, inoona kukosha kweNOx mupombi yekupedza nguva uye inodzosera kuECU / DCU kuburikidza neCAN bhazi.ECU haitongi kana iyo inopera inokodzera nekuona iyo chaiyo-nguva NOx kukosha, asi inoona kana iyo NOx kukosha mupombi yekuburitsa inodarika mwero kuburikidza neseti yeNOx monitoring chirongwa.Kuti umhanye NOx kuona, zvinotevera zvinofanirwa kusangana:
Iyo inotonhorera yemvura system inoshanda zvakajairwa pasina kukanganisa makodhi.Iko hakuna kukanganisa kodhi kune ambient pressure sensor.
Tembiricha yemvura iri pamusoro pe70 ℃.Kuonekwa kweNOx kwakazara kunoda makumi maviri emasampuli.Mushure mekuona NOx imwe chete, ECU / DCU ichaenzanisa data yakatorwa: kana chiyero chepakati chese sampuli NOx maitiro ari pasi peiyo yakatarwa kukosha panguva yekuona, kuonekwa kunopfuura.Kana chiyero chepakati chese sampuli NOx kukosha yakakura kudarika yakatarwa kukosha panguva yekuona, mutariri anonyora kukanganisa.Zvisinei, mwenje we mil haubatidzwe.Kana iyo yekutarisa ikatadza kaviri akateedzana, sisitimu inoshuma Super 5 uye super 7 kukanganisa makodhi, uye mil rambi rinobatidzwa.
Kana iyo 5 kukanganisa kodhi yakapfuura, mwenje we mil uchange wakabatidzwa, asi torque haizoganhurirwe.Kana iyo 7 kukanganisa kodhi yadarika, mwenje we mil unobatidzwa uye sisitimu inodzikamisa torque.Muganhu we torque wakaiswa nemugadziri wemodhi.
Cherechedza: kunyange kana kukanganisa kwakawanda kwemamwe mamodheru kwakagadziriswa, mwenje we mil hauzodzimi, uye chimiro chemhosva chicharatidzwa sechikanganiso chezvakaitika kare.Muchiitiko ichi, zvinodikanwa kukwesha data kana kuita yakakwira NOx reset basa.
Achivimba nekambani yeboka makore makumi maviri nemaviri eruzivo rweindasitiri uye yakasimba software R & D kugona, Yunyi Electric akashandisa timu yepamusoro nyanzvi yepamba uye akabatanidza zviwanikwa zvezvitatu zveR & D zvigadziko pasi rese kuti uwane hunyanzvi hukuru muNOx sensor control. software algorithm uye chigadzirwa calibration matching, uye yakagadziriswa marwadzo emisika, yakatyora tekinoroji monopoly, yakasimudzira budiriro nesainzi uye tekinoroji, uye yakavimbiswa mhando nehunyanzvi.Kunyange zvazvo Yunyi yemagetsi inovandudza kugadzirwa kweNOx sensors kusvika kune imwe nzvimbo yakakwirira, chiyero chekugadzira chinoramba chichiwedzera, kuitira kuti Yunyi nitrogen uye oksijeni sensors igadzirise bhenji yakanaka mumhizha!
Nguva yekutumira: Sep-02-2022