Na'urar firikwensin iskar oxygen (NOx Sensor) shine firikwensin da ake amfani da shi don gano abubuwan da ke cikin nitrogen oxides (NOx) kamar N2O, a'a, NO2, N2O3, N2O4 da N2O5 a cikin sharar injin.Dangane da ka'idar aiki, ana iya raba shi zuwa electrochemical, optical da sauran na'urori masu auna firikwensin NOx.Amfani da conductivity na m electrolyte yttrium oxide doped zirconia (YSZ) yumbu abu zuwa oxygen ions, da zažužžukan catalytic ji na musamman NOx m electrode abu zuwa NOx gas, da kuma hadawa da musamman firikwensin tsarin don samun lantarki siginar na NOx, a karshe, ta yin amfani da. Gano sigina mai rauni na musamman da ingantacciyar fasahar sarrafa lantarki, iskar NOx a cikin sharar mota an gano kuma an canza shi zuwa daidaitattun siginonin bas na CAN.
Aiki na nitrogen oxygen firikwensin
- kewayon ma'aunin NOx: 0-1500 / 2000 / 3000ppm NOx
- Kewayon aunawa O2: 0 - 21%
- Matsakaicin zafin jiki mai shayewa: 800 ℃
- ana iya amfani dashi a ƙarƙashin O2 (21%), HC, Co, H2O (<12%)
- sadarwar sadarwa: iya
Filin aikace-aikacen firikwensin NOx
- Tsarin SCR mai fitar da injin dizal (gama da ka'idojin fitarwa na IV, V da VI)
- inji mai shaye gas magani tsarin
- desulfurization da denitration ganowa da kuma kula da tsarin ikon shuka
Haɗin gwiwar nitrogen oxygen firikwensin
Babban mahimman abubuwan haɗin NOx firikwensin su ne abubuwan haɗin yumbu da abubuwan SCU
Core na NOx Sensor
Saboda yanayin amfani na musamman na samfur, ana haɓaka guntu yumbu tare da tsarin sinadaran lantarki.Tsarin yana da rikitarwa, amma siginar fitarwa yana da ƙarfi, saurin amsawa yana da sauri, kuma sabis ɗin yana da tsayi.Samfurin ya sadu da sa ido na abubuwan da ke fitar da NOx a cikin aikin fitar da hayakin dizal.Sassan ɓangarorin yumbu sun ƙunshi cavities na ciki da yawa na yumbu, waɗanda suka haɗa da zirconia, alumina da nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan Pt.Tsarin samarwa yana da rikitarwa, ana buƙatar daidaiton bugu na allo, kuma ana buƙatar madaidaicin buƙatun dabara / kwanciyar hankali da tsarin sintering.
A halin yanzu, akwai na'urori masu auna firikwensin NOx guda uku a kasuwa: fitilun fiti guda biyar, lebur huɗu da fin murabba'i huɗu
NOx firikwensin na iya sadarwa
Firikwensin NOx yana sadarwa tare da ECU ko DCU ta hanyar iya sadarwa.An haɗa taron NOx a cikin ciki tare da tsarin gano kansa (nitrogen da firikwensin oxygen na iya kammala wannan matakin da kansa ba tare da buƙatar ECU ko DCU don ƙididdige ƙwayar nitrogen da oxygen ba).Yana sa ido kan yanayin aikinsa kuma yana mayar da siginar tattarawar NOx zuwa ECU ko DCU ta hanyar motar sadarwar jiki.
Kariya don shigar da firikwensin NOx
Za a shigar da binciken firikwensin NOx akan rabi na sama na mai kara kuzari na bututun shaye-shaye, kuma binciken firikwensin ba zai kasance a wuri mafi ƙasƙanci na mai kara kuzari ba.Hana binciken iskar oxygen na nitrogen daga fashe lokacin saduwa da ruwa.Hanyar shigar da naúrar sarrafa firikwensin iskar oxygen: shigar da naúrar a tsaye don mafi kyawun hana shi.Bukatun zafin jiki na sashin kula da firikwensin NOx: ba za a shigar da firikwensin nitrogen da oxygen a wuraren da ke da matsanancin zafin jiki ba.Ana ba da shawarar a nisantar da bututun mai da kuma kusa da tankin urea.Idan dole ne a shigar da firikwensin iskar oxygen a kusa da bututun shayewa da tankin urea saboda shimfidar dukkan abin hawa, dole ne a shigar da garkuwar zafi da auduga mai zafi, kuma dole ne a kimanta yanayin zafin jiki a kusa da wurin shigarwa.Mafi yawan zafin jiki na aiki bai fi 85 ℃ ba.
Ayyukan kariyar raɓa: saboda lantarki na firikwensin NOx yana buƙatar zafin jiki mafi girma don aiki, firikwensin NOx yana da tsarin yumbu a ciki.yumbu ba zai iya taɓa ruwa a yanayin zafi mai yawa, kuma yana da sauƙin faɗaɗa da kwangila lokacin da ya hadu da ruwa, yana haifar da fashewar yumbu.Sabili da haka, firikwensin NOx za a sanye shi da aikin kariyar raɓa, wanda shine jira na ɗan lokaci bayan gano cewa zazzabi na bututun mai ya kai ƙimar da aka saita.ECU ko DCU suna tunanin cewa a ƙarƙashin irin wannan yanayin zafi, ko da akwai ruwa akan firikwensin NOx, za a busa shi ta bushewar iskar gas mai zafi.
Ganewa da ganewar asali na NOx
Lokacin da firikwensin NOx ke aiki akai-akai, yana gano ƙimar NOx a cikin bututun shaye-shaye a ainihin lokacin kuma yana ciyar da shi zuwa ECU / DCU ta hanyar bas ɗin CAN.ECU baya yanke hukunci ko shayarwar ta cancanta ta gano ainihin ƙimar NOx, amma yana gano ko ƙimar NOx a cikin bututun shayewa ya wuce ma'auni ta hanyar saitin shirin sa ido na NOx.Don gudanar da gano NOx, dole ne a cika waɗannan sharuɗɗan:
Tsarin ruwan sanyaya yana aiki akai-akai ba tare da lambobin kuskure ba.Babu lambar kuskure don firikwensin matsa lamba na yanayi.
Ruwan zafin jiki yana sama da 70 ℃.Cikakken gano NOx yana buƙatar kusan samfurori 20.Bayan gano NOx guda ɗaya, ECU / DCU za su kwatanta bayanan da aka yi amfani da su: idan matsakaicin ƙimar duk ƙimar NOx da aka ƙididdige ta ƙasa da ƙimar da aka saita yayin ganowa, ganowar ta wuce.Idan matsakaicin ƙimar duk samfuran NOx da aka ƙirƙira ya fi ƙimar da aka saita yayin ganowa, mai saka idanu zai yi rikodin kuskure.Koyaya, ba a kunna fitilar mil ba.Idan saka idanu ya gaza sau biyu a jere, tsarin zai ba da rahoton Super 5 da super 7 lambobin kuskure, kuma fitilar mil zata kunna.
Lokacin da aka ƙetare lambar kuskure 5, fitilar mil za ta kasance a kunne, amma ba za a iyakance karfin juyi ba.Lokacin da lambar kuskure 7 ta wuce, za a kunna fitilar mil kuma tsarin zai iyakance karfin wuta.Maƙerin ƙirƙira ya saita iyakar ƙarfin ƙarfi.
Lura: ko da an gyara kuskuren da ya mamaye wasu samfuran, fitilar mil ba za ta mutu ba, kuma za a nuna kuskuren a matsayin laifin tarihi.A wannan yanayin, ya zama dole don goge bayanan ko yin babban aikin sake saitin NOx.
Dogaro da shekaru 22 na kamfani na ƙwarewar masana'antu da ƙwarewar software mai ƙarfi R & D, Yunyi Electric ya yi amfani da ƙungiyar ƙwararrun ƙwararrun ƙwararrun gida kuma ya haɗa albarkatun R & D guda uku a duk faɗin duniya don cimma manyan sabbin abubuwa a cikin sarrafa firikwensin NOx. software algorithm da samfurin daidaita ma'auni, da warware matsalolin kasuwa, karya ta hanyar fasahar kere kere, haɓaka haɓaka tare da kimiyya da fasaha, da tabbacin inganci tare da ƙwarewa.Yayin da Yunyi lantarki ke inganta samar da na'urori masu auna firikwensin NOx zuwa matsayi mafi girma, sikelin samarwa yana ci gaba da fadadawa, ta yadda Yunyi nitrogen da na'urori masu auna iskar oxygen sun kafa ma'auni mai kyau a cikin masana'antu!
Lokacin aikawa: Satumba-02-2022