TheN0x Sensoryana daya daga cikin mahimman abubuwan da ke cikin tsarin bayan magani.A lokacin aikin injin, ana gano ƙaddamarwar N0x a cikin iskar gas na bututun da ke fitar da injin, don gano ko fitar da N0x ya dace da ka'idoji.
Na'urar firikwensin N0x wani yanki ne da aka kammala wanda ya ƙunshi binciken ƙaddamarwa, tsarin sarrafawa da kayan haɗin waya.Akwai aikin tantance kai a ciki, kuma ana ba da rahoton bayanan sa ido ga ECU ta hanyar sadarwar bas ta CAN.
1. Shigarwa ta jiki na firikwensin nitrogen oxide:
1. N0x SensorBukatun zazzabi na shigarwa: Shigar da firikwensin N0x yakamata a yi hankali kada a sanya shi a wurin da zafin jiki ya yi yawa.Ana ba da shawarar nisantar bututun shaye-shaye da saman akwatin SCR, kuma dole ne a shigar da garkuwar zafi da auduga mai rufi yayin shigarwa.Kuma kimanta zafin jiki a kusa da shigarwar firikwensin ECU, ana ba da shawarar cewa mafi kyawun zafin aiki na firikwensin N0x kada ya zama sama da digiri 85.
2. Waya kayan aiki da haɗin haɗin buƙatun shigarwa: yi aiki mai kyau na gyarawa da hana ruwa ruwa, kiyaye layin a kwance yayin shigarwa da amfani da firikwensin N0x, kuma duk kayan haɗin waya ba za a iya lankwasa su da yawa don hana igiyar waya ba. daga faɗuwa saboda matsanancin ƙarfi na waje ko ƙarfin girgiza, kuma a yi ƙoƙarin guje wa kayan aikin waya kuma firikwensin N0x ya fallasa.Idan akwai wayoyi na karfe da aka fallasa, to sai a nade su da tef bi-da-bi, sannan kuma kada a shafa man datti, tarkace, laka da sauran mujallu, da hana ruwa.In ba haka ba, firikwensin zai gaza saboda ruwa a cikin kayan aikin wayoyi.
2. Yanayin bayyanar N0x nitrogen oxide firikwensin: 2.1 tsara da 2.8 tsara
1. NOx firikwensin yana da 12V da 24V.
2. NOx firikwensin yana da matosai 4 da 5-pin.
3. Samfuran samfuran aikace-aikacen nitrogen oxide sune: Cummins, Weichai, Yuchai, Sinotruk, da dai sauransu.
3. An yi bayanin tsarin aiki na firikwensin nitrogen oxide daki-daki:
Babban aikin firikwensin N0x shine gano ko ƙimar tattarawar N0x a cikin iskar iskar gas ɗin ta zarce iyaka, da kuma tantance ko muffler catalytic muffler ya tsufa ko kuma ya lalace.
TheN0x Sensoryana sadarwa tare da sashin sarrafawa ta hanyar bas ɗin CAN kuma yana da aikin bincike na kansa.Bayan na'urar firikwensin ya duba kansa ba tare da kuskure ba, sashin kulawa yana ba da umarni don dumama firikwensin N0x.A lokacin aikin dumama, idan ba a karɓi siginar firikwensin ba bayan matsakaicin iyakar lokacin dumama, an ƙaddara cewa dumama firikwensin ba shi da tabbas.
1. "Babu Mulki":
A. A wannan yanayin, ba a ba da wutar lantarki 24V ga firikwensin ba.
B. Wannan shine yanayin al'ada na firikwensin lokacin da aka kashe wutan jiki.
C. A wannan lokacin, firikwensin ba shi da fitarwa.
2. "Mai ƙarfi - firikwensin baya aiki":
A. A wannan lokacin, an ba da wutar lantarki zuwa firikwensin ta hanyar kunna wuta.
B. Na'urar firikwensin ya shiga matakin preheating.Manufar preheating shine don ƙafe duk danshin da ke kan firikwensin.
C. Matakin da ake yin zafi zai ɗauki kimanin daƙiƙa 60.
3. Lokacin da aka kunna kunna wuta, firikwensin N0x zai yi zafi har zuwa 100 ° C.
4. Sa'an nan kuma jira ECM don fitar da siginar "dew point" zafin jiki (Dew point):
Zazzabi na "dew point" shine zafin jiki wanda ba za a sami danshi ba a cikin tsarin shayewa wanda zai iya lalata firikwensin N0x.A halin yanzu ana saita zafin raɓa zuwa 120 ° C, kuma ƙimar zafin jiki shine ƙimar da aka auna ta firikwensin zafin jiki na ma'anar EGP.
5. Bayan firikwensin ya karɓi siginar zafin raɓa daga ECM, firikwensin zai yi zafi da kansa zuwa wani zazzabi (mafi girman 800 ° C) - Lura: Idan shugaban firikwensin ya shiga cikin ruwa a wannan lokacin, firikwensin zai kasance. lalace.
6. Bayan dumama zuwa zafin aiki, firikwensin ya fara aunawa kullum.
7. Na'urar iskar oxygen ta iskar oxygen tana aika ma'aunin nitrogen oxide da aka auna zuwa ECM ta hanyar bas ɗin CAN, kuma injin ECM yana kula da iskar nitrogen oxide daga lokaci zuwa lokaci ta wannan bayanin.
4. ka'idar aiki na firikwensin nitrogen oxide:
Ƙa'idar aiki: Babban ɓangaren nitrogen da firikwensin oxygen shine bututun yumbura na Zr02 zirconia na jirgin ruwa, wanda ke da ƙarfi mai ƙarfi, kuma na'urorin lantarki na platinum (Pt) suna daɗaɗawa a bangarorin biyu.Lokacin da zafi zuwa wani zafin jiki (600-700 ° C), saboda bambanci a cikin maida hankali na oxygen a bangarorin biyu, zirconia za ta fuskanci wani nau'i na sinadarai, cajin motsi zai faru a bangarorin biyu na lantarki, kuma cajin motsi zai haifar da halin yanzu. .Dangane da girman girman halin yanzu da aka samar, ana nuna ƙwayar iskar oxygen, kuma ana mayar da iskar oxygen zuwa mai sarrafawa don ƙididdige adadin iskar oxygen na nitrogen na yanzu kuma aika shi zuwa ECU ta hanyar bas na CAN.
5. Na'urar firikwensin binciken aikin kare kai da kiyayewa:
Lokacin da aka kunna wuta, firikwensin N0x zai yi zafi har zuwa 100°C.Sannan jira DCU don aika siginar zafin raɓa.Lokacin da firikwensin ya karɓi siginar zafin raɓa da DCU ta aiko, firikwensin zai yi zafi da kansa zuwa wani zafin jiki (mafi girman 800 ° C. Lura: Idan firikwensin ya shiga cikin ruwa a wannan lokacin, zai haifar da lalacewar firikwensin).
Ayyukan kariyar raɓa: Saboda iskar oxygen na iskar oxygen da kanta yana buƙatar ƙarin zafin jiki lokacin da lantarki ke aiki, firikwensin oxygen na nitrogen yana da tsarin yumbu a ciki.yumbura zai fashe lokacin da ya ci karo da ruwa a babban zafin jiki, don haka firikwensin iskar oxygen na nitrogen zai saita aikin kariyar raɓa.Ayyukan wannan aikin shine jira na ɗan lokaci bayan gano yawan zafin jiki na shayewa ya kai wani zazzabi.Na'urar kwamfuta ta yi imanin cewa a irin wannan yanayin zafi, ko da akwai ruwa a kan firikwensin bayan irin wannan lokaci mai tsawo, za a iya busa shi ta bushe da iska mai zafi.
6. Sauran ilimin nitrogen da oxygen firikwensin:
Ana amfani da wani abu mai suna "Gortex"* akanNOx Sensordon tabbatar da cewa iska mai daɗi ta shiga sararin kwatancen tunani a cikin firikwensin.Don haka, yana da matukar muhimmanci a tabbatar da cewa ba a toshe wannan hurumi, kuma wajibi ne a guji toshewa ko rufe wannan hurumin yayin da ake sanyawa.Bugu da ƙari, yi ƙoƙarin tabbatar da cewa an shigar da firikwensin bayan an fentin jiki da fenti.Idan aikin zanen jiki da zanen dole ne a gudanar da aikin bayan an shigar da firikwensin, dole ne a kiyaye magudanar firikwensin yadda ya kamata, kuma dole ne a cire kayan kariya bayan an gama zanen da zanen don tabbatar da aikin na yau da kullun na firikwensin. .
Lokacin aikawa: Jul-09-2022