karyewar firikwensin oxygen

karyewar firikwensin oxygen yana haifar da ƙãra yawan man fetur, raguwa a cikin halayen mota, rashin kwanciyar hankali na aikin injiniya a cikin rashin aiki, karuwa a yawan guba. Yawancin lokaci, dalilan da ke haifar da rushewar firikwensin iskar oxygen shine lalacewar injinsa, rushewar wutar lantarki (sigina), gurɓataccen ɓangaren firikwensin tare da samfuran konewa mai. A wasu lokuta, misali, lokacin da kuskure p0130 ko p0141 ya faru akan dashboard, ana kunna hasken faɗakarwar Injin Dubawa. Yana yiwuwa a yi amfani da injin tare da na'urar firikwensin oxygen mara kyau, amma wannan zai haifar da matsalolin da ke sama.

Manufar iskar oxygen

Ana shigar da firikwensin iskar oxygen a cikin ma'auni (ƙayyadaddun wuri da yawa na iya bambanta ga motoci daban-daban), kuma yana lura da kasancewar iskar oxygen a cikin iskar gas. A cikin masana'antar kera motoci, harafin Helenanci "lambda" yana nufin rabon iskar oxygen da ke cikin cakuda iskar mai. A saboda wannan dalili ne ake kira firikwensin oxygen a matsayin "lambda probe".

Bayanin da firikwensin ya bayar akan adadin iskar oxygen a cikin abun da ke tattare da iskar gas ta naúrar sarrafa lantarki ta ICE (ECU) ana amfani da ita don daidaita allurar mai. Idan akwai iskar oxygen da yawa a cikin iskar gas, to, cakuda iskar man da ake bayarwa ga silinda ba shi da kyau (lantarki akan firikwensin shine 0,1 ... Volta). Dangane da haka, ana daidaita adadin man da aka kawo idan ya cancanta. Abin da ke shafar ba kawai halaye masu ƙarfi na injin konewa na ciki ba, har ma da aiki na mai canzawa na iskar gas.

A mafi yawan lokuta, kewayon tasiri aiki na mai kara kuzari shine 14,6 ... 14,8 sassa na iska da wani ɓangare na man fetur. Wannan yayi daidai da ƙimar lambda ɗaya. don haka, na'urar firikwensin iskar oxygen wani nau'i ne na mai sarrafawa wanda yake a cikin ma'auni.

An ƙera wasu motocin don amfani da na'urori masu auna iskar oxygen guda biyu. Ɗayan yana samuwa a gaban mai kara kuzari, kuma na biyu yana bayan. Ayyukan na farko shine gyara abubuwan da ke tattare da cakuda iska da man fetur, na biyu kuma shine duba ingancin mai kara kuzari. Na'urori masu auna firikwensin da kansu yawanci iri ɗaya ne a cikin ƙira.

Shin binciken lambda yana shafar ƙaddamarwa - menene zai faru?

Idan ka kashe binciken lambda, to, za a sami karuwar yawan man fetur, karuwar yawan iskar gas, da kuma wani lokacin rashin kwanciyar hankali na injin konewa na ciki a cikin aiki. Koyaya, wannan tasirin yana faruwa ne kawai bayan dumama, tunda iskar oxygen ta fara aiki a yanayin zafi har zuwa + 300 ° C. Don yin wannan, ƙirarsa ta ƙunshi amfani da dumama na musamman, wanda aka kunna lokacin da injin konewa na ciki ya fara. Saboda haka, a lokacin da aka fara injin cewa binciken lambda ba ya aiki, kuma ba zai shafi farkon kansa ba.

Hasken "duba" a yayin da aka rushe binciken binciken lambda yana haskakawa lokacin da aka haifar da takamaiman kurakurai a cikin ƙwaƙwalwar ECU da ke da alaƙa da lalacewar na'urar firikwensin ko firikwensin kanta, duk da haka, an saita lambar kawai a ƙarƙashin wasu yanayi na injin konewa na ciki.

Alamun karyewar firikwensin iskar oxygen

Rashin gazawar binciken lambda yawanci yana tare da alamomin waje masu zuwa:

• Rage motsi da rage ƙarfin aikin abin hawa.
• Rashin kwanciyar hankali. A lokaci guda, darajar juyin juya hali na iya tsalle da faɗuwa ƙasa mafi kyau. A cikin yanayi mafi mahimmanci, motar ba za ta yi aiki ba ko kadan kuma ba tare da direban motar ba zai tsaya kawai.
• Ƙara yawan man fetur. Yawanci wuce gona da iri ba shi da mahimmanci, amma ana iya tantance shi ta hanyar auna shirin.
• Ƙara yawan hayaki. A lokaci guda kuma, iskar gas ɗin da ke shayewa ya zama mara kyau, amma suna da launin toka ko launin shuɗi da kaifi mai kamshin mai.

Yana da kyau a faɗi cewa alamun da aka jera a sama na iya nuna wasu ɓarna na injin konewa na ciki ko wasu tsarin abin hawa. Saboda haka, don sanin gazawar na'urar firikwensin oxygen, ana buƙatar dubawa da yawa ta amfani da, da farko, na'urar daukar hotan takardu da multimeter don duba siginar lambda (iko da da'irar dumama).

yawanci, matsalolin na'urar firikwensin iskar oxygen ana gano su a fili ta sashin kula da lantarki. A lokaci guda, ana haifar da kurakurai a cikin ƙwaƙwalwar ajiyarsa, misali, p0136, p0130, p0135, p0141 da sauransu. Duk da haka, yana da mahimmanci don bincika da'irar firikwensin (duba kasancewar ƙarfin lantarki da amincin wayoyi ɗaya), da kuma duba jadawalin aiki (ta amfani da oscilloscope ko shirin bincike).

Dalilai na rushewar firikwensin iskar oxygen

A mafi yawan lokuta, oxygen lambda yana aiki na kimanin kilomita dubu 100 ba tare da gazawa ba, duk da haka, akwai dalilai da ke rage yawan albarkatunsa da kuma haifar da lalacewa.

• karyewar yanayin firikwensin oxygen. Bayyana kanku daban. Wannan na iya zama cikakken hutu a cikin wadata da / ko wayoyi na sigina. Lalacewa mai yuwuwa ga kewayen dumama. A wannan yanayin, binciken lambda ba zai yi aiki ba har sai iskar iskar gas ɗin ta dumama shi zuwa zafin aiki. Lalacewar mai yuwuwa ga rufin kan wayoyi. A wannan yanayin, akwai gajeren kewayawa.
• Sensor gajeriyar kewayawa. A wannan yanayin, gaba ɗaya ya gaza kuma, saboda haka, baya ba da sigina. Yawancin binciken lambda ba za a iya gyara su ba kuma dole ne a maye gurbinsu da sababbi.
• Lalacewar firikwensin tare da samfurori na konewar man fetur. Yayin aiki, firikwensin iskar oxygen, saboda dalilai na halitta, a hankali ya zama datti kuma bayan lokaci yana iya daina watsa madaidaicin bayanai. Don haka, masu kera motoci suna ba da shawarar canza firikwensin lokaci-lokaci zuwa sabo, yayin da suke ba da fifiko ga asali, tunda lambda na duniya ba koyaushe yana nuna bayanai daidai ba.
• Zazzagewar zafi. Wannan yawanci yana faruwa ne saboda matsaloli tare da kunnawa, wato, katsewa a cikinsa. A ƙarƙashin irin waɗannan yanayi, firikwensin yana aiki a yanayin zafi da ke da mahimmanci a gare shi, wanda ke rage rayuwar gabaɗaya kuma a hankali yana kashe shi.
• Lalacewar injiniya ga firikwensin. Za su iya faruwa a lokacin aikin gyaran da bai dace ba, lokacin tuƙi daga kan hanya, yana tasiri cikin haɗari.
• Yi amfani da lokacin shigar da siginar firikwensin da ke warkewa a babban zafin jiki.
• Ƙoƙari da yawa marasa nasara don fara injin konewa na ciki. A lokaci guda kuma, man da ba a kone ba yana taruwa a cikin injin konewa na ciki, da kuma a cikin mashin ɗin da ake fitarwa.
• Tuntuɓi mai hankali ( yumbu) tip na firikwensin firikwensin tsari daban-daban ko ƙananan abubuwa na waje.
• Leakage a cikin tsarin shaye-shaye. Misali, gasket tsakanin manifold da mai kara kuzari na iya ƙonewa.

Lura cewa yanayin firikwensin iskar oxygen ya dogara da yanayin sauran abubuwan injin konewa na ciki. Don haka, waɗannan dalilai suna rage rayuwar binciken lambda sosai: yanayin rashin gamsuwa na zoben goge mai, shigar da maganin daskarewa a cikin mai (cylinders), da wadatar iska da cakuda mai. Kuma idan, tare da firikwensin oxygen mai aiki, adadin carbon dioxide yana kusan 0,1 ... 0,3%, to, lokacin da binciken lambda ya kasa, ƙimar da ta dace tana ƙaruwa zuwa 3 ... 7%.

Yadda za a gane firikwensin oxygen ya karye

Akwai hanyoyi da yawa don bincika matsayin firikwensin lambda da kewayen wadatar sa / siginar sa.

Kwararrun BOSCH sun ba da shawarar duba na'urar firikwensin daidai kowane kilomita dubu 30, ko kuma lokacin da aka gano rashin aikin da aka bayyana a sama.

Menene ya kamata a fara yi yayin da ake gano cutar?

1. wajibi ne a kimanta adadin soot akan bututun bincike. Idan ya yi yawa, firikwensin ba zai yi aiki daidai ba.
2. Ƙayyade launi na adibas. Idan akwai adibas na fari ko launin toka akan mahimmin sinadari na firikwensin, wannan yana nufin ana amfani da man fetur ko ƙari mai. Suna yin illa ga aikin binciken lambda. Idan akwai ajiya mai haske a kan bututun bincike, wannan yana nuna cewa akwai gubar da yawa a cikin man da ake amfani da shi, kuma yana da kyau a ƙi amfani da irin wannan man fetur, bi da bi, canza alamar tashar gas.
3. Kuna iya ƙoƙarin tsaftace soot, amma wannan ba koyaushe zai yiwu ba.
4. Bincika amincin wayoyi tare da multimeter. Dangane da samfurin firikwensin na musamman, zai iya samun daga wayoyi biyu zuwa biyar. Ɗaya daga cikinsu zai zama sigina, sauran kuma za a samar da su, ciki har da ƙarfafa abubuwan dumama. Don yin aikin gwajin, kuna buƙatar multimeter na dijital wanda zai iya auna ƙarfin lantarki da juriya na DC.
5. Yana da daraja duba juriya na firikwensin hita. A cikin nau'i daban-daban na binciken lambda, zai kasance a cikin kewayon daga 2 zuwa 14 ohms. Darajar ƙarfin wutar lantarki ya kamata ya zama kusan 10,5 ... 12 Volts. A lokacin aikin tabbatarwa, ya kuma zama dole a duba amincin duk wayoyi masu dacewa da firikwensin, da kuma ƙimar juriyar su (duka biyu a tsakanin su, da kowane ƙasa).

Yadda ake duba bidiyon binciken lambda

Lura cewa aiki na yau da kullun na firikwensin iskar oxygen yana yiwuwa ne kawai a yanayin aiki na yau da kullun na +300°C…+400°C. Wannan shi ne saboda gaskiyar cewa kawai a karkashin irin wannan yanayi ne zirconium electrolyte ajiya a kan m kashi na firikwensin ya zama madugu na lantarki halin yanzu. Haka kuma a wannan yanayin, bambancin da ke tsakanin iskar oxygen da iskar oxygen a cikin bututun shaye-shaye zai sa wutar lantarki ta bayyana a kan na’urorin firikwensin, wanda za a watsa zuwa na’urar sarrafa injin injin.

Tunda duba firikwensin oxygen a lokuta da yawa ya haɗa da cirewa / shigarwa, yana da daraja la'akari da waɗannan nuances:

• Na'urorin Lambda suna da rauni sosai, don haka, lokacin dubawa, bai kamata a sanya su cikin damuwa da / ko girgiza ba.
• Dole ne a bi da zaren firikwensin tare da manna zafi na musamman. A wannan yanayin, kuna buƙatar tabbatar da cewa manna bai shiga cikin abubuwan da ke da hankali ba, saboda hakan zai haifar da aikin da ba daidai ba.
• Lokacin daɗaɗawa, dole ne ku lura da ƙimar juzu'in, kuma kuyi amfani da maƙarƙashiya don wannan dalili.

Daidaitaccen bincike na binciken lambda

Hanyar da ta fi dacewa don ƙayyade lalacewar na'urar firikwensin oxygen zai ba da damar oscilloscope. Bugu da ƙari, ba lallai ba ne don amfani da na'urar ƙwararru, zaku iya ɗaukar oscillogram ta amfani da shirin na'urar kwaikwayo akan kwamfutar tafi-da-gidanka ko wata na'ura.

Jadawalin daidaitaccen aiki na firikwensin oxygen

Hoton farko a wannan sashe shine jadawali na daidaitaccen aiki na firikwensin iskar oxygen. A wannan yanayin, ana amfani da sigina mai kama da labulen sine a kan siginar. Sinusoid a cikin wannan yanayin yana nufin cewa siga da firikwensin ke sarrafawa (yawan iskar oxygen a cikin iskar gas) yana cikin iyakar da aka halatta, kuma ana bincika shi akai-akai kuma lokaci-lokaci.

Jadawalin aiki na firikwensin iskar oxygen da ya gurɓace

Oxygen firikwensin leken asiri ƙona jadawalin

Jadawalin Ayyukan Sensor Oxygen akan Haɗin Man Fetur

Oxygen firikwensin ƙwanƙwasa tsarin ƙonawa

Wadannan jadawalai ne masu dacewa da na'urar firikwensin gurɓatacce, amfani da abin hawa na ICE na gauraye maras nauyi, cakude mai arziƙi, da cakuɗen raƙuman ruwa. Layuka masu laushi a kan jadawali suna nufin cewa sigar sarrafawa ta wuce iyakokin da aka halatta a wata hanya ko wata.

Yadda ake gyara firikwensin iskar oxygen da ya karye

Idan daga baya rajistan ya nuna cewa dalilin yana cikin wayoyi, to za a magance matsalar ta hanyar maye gurbin kayan aikin waya ko guntuwar haɗin kai, amma idan babu sigina daga firikwensin kanta, sau da yawa yana nuna buƙatar maye gurbin ƙwayar iskar oxygen. firikwensin da sabo, amma kafin siyan sabon lambda, za ka iya amfani da daya daga cikin wadannan hanyoyi.

Hanyar daya

Ya haɗa da tsaftace kayan dumama daga ajiyar carbon (ana amfani da shi lokacin da aka sami raunin na'urar firikwensin oxygen). Don aiwatar da wannan hanya, wajibi ne don samar da dama ga ɓangaren yumbu mai mahimmanci na na'urar, wanda ke ɓoye a bayan hular kariya. Kuna iya cire ƙayyadaddun hula ta amfani da fayil na bakin ciki, wanda da shi kuke buƙatar yankewa a cikin yanki na tushen firikwensin. Idan ba zai yiwu a rushe hular gaba daya ba, to an ba da izinin samar da ƙananan windows game da 5 mm a girman. Don ƙarin aiki, kuna buƙatar kimanin 100 ml na phosphoric acid ko mai canza tsatsa.

Lokacin da hular kariya ta lalace gaba ɗaya, sannan don mayar da ita zuwa wurin zama, dole ne ku yi amfani da walda na argon.

Ana aiwatar da hanyar dawowa bisa ga algorithm mai zuwa:

• Zuba 100 ml na phosphoric acid a cikin akwati gilashi.
• Tsoma sinadarin yumbu na firikwensin a cikin acid. Ba shi yiwuwa a rage gaba ɗaya firikwensin cikin acid! Bayan haka, jira kimanin minti 20 don acid ya narkar da soot.
• Cire firikwensin kuma kurkura shi ƙarƙashin ruwan famfo mai gudana, sannan bar shi ya bushe.

Wani lokaci yana ɗaukar har zuwa sa'o'i takwas don tsaftace firikwensin ta amfani da wannan hanya, saboda idan ba a tsabtace soot ba a karo na farko, to yana da daraja maimaita hanya sau biyu ko fiye, kuma zaka iya amfani da goga don yin aikin injiniya. Maimakon goga, zaka iya amfani da buroshin hakori.

Hanyar na biyu

Yana ɗauka yana ƙone fitar da adibas na carbon akan firikwensin. Don tsaftace firikwensin oxygen ta hanyar hanya ta biyu, ban da phosphoric acid guda ɗaya, za ku kuma buƙaci mai ƙona gas (a matsayin zaɓi, yi amfani da murhun gas na gida). Tsaftace algorithm shine kamar haka:

• Sanya sinadarin yumbu mai mahimmanci na firikwensin oxygen a cikin acid, jika shi da yawa.
• Ɗauki firikwensin tare da filan daga gefen kishiyar kashi kuma kawo shi zuwa mai ƙonewa.
• Acid ɗin da ke jikin abin ji zai tafasa, kuma gishiri mai launin kore zai yi a samansa. Duk da haka, a lokaci guda, za a cire soot daga gare ta.

Maimaita hanyar da aka kwatanta sau da yawa har sai abin da ya dace ya kasance mai tsabta da haske.