YADDA AKE GWADA O2 SENSOR DA MULTIMETER
Abubuwa
Ba tare da bayani ba, injin motar ku ba shi da ƙarfi kuma mai yiwuwa shine mafi mahimmancin ɓangaren motar ku.
Akwai na'urori masu auna firikwensin da yawa waɗanda ke sa shi aiki a cikin mafi kyawun yanayi, kuma idan ɗayansu ya gaza, injin yana cikin haɗari.
Kuna da matsalolin inji?
Shin kun gudanar da gwaje-gwaje akan fitattun na'urori masu auna firikwensin kamar crankshaft firikwensin ko firikwensin matsayi kuma har yanzu kuna cikin matsala iri ɗaya?
Sannan firikwensin O2 na iya zama mafi ƙarancin shaharar mai laifi.
A cikin wannan post ɗin, za mu bibiyar ku ta duk tsarin bincika firikwensin O2, daga fahimtar menene su zuwa amfani da multimeter don yin bincike daban-daban.
Mu fara.
Menene firikwensin O2?
Na'urar firikwensin O2 ko firikwensin oxygen shine na'urar lantarki da ke auna adadin iskar oxygen a cikin iska ko ruwa a kusa da shi.
Idan ya zo ga abin hawa, firikwensin iskar oxygen shine na'urar da ke taimaka wa injin daidaita ma'aunin iska da mai.
Yana cikin wurare biyu; ko dai tsakanin tarkacen shaye-shaye da na'ura mai sarrafa motsi, ko kuma tsakanin ma'aunin catalytic da tashar shaye-shaye.
Mafi yawan nau'in firikwensin O2 da ake amfani da su a cikin motoci shine firikwensin zirconia wideband, wanda ke da wayoyi huɗu masu alaƙa da shi.
Waɗannan wayoyi sun haɗa da waya fitarwa ta sigina ɗaya, waya ta ƙasa ɗaya, da wayoyi masu dumama guda biyu (launi ɗaya).
Wayar siginar ita ce mafi mahimmanci don ganewar mu kuma idan firikwensin oxygen ɗin ku ba daidai ba ne za ku yi tsammanin injin ku ya sha wahala kuma ya nuna wasu alamun.
Alamomin firikwensin O2 sun gaza
Wasu daga cikin alamun mummunan firikwensin O2 sun haɗa da:
- Ƙona hasken injin injin a kan dashboard,
- Rashin injin injin
- Wari mara kyau daga injin ko bututun shaye-shaye,
- Jumping motor ko karfin wuta,
- Rashin tattalin arzikin mai da kuma
- Rashin mizanin abin hawa, da dai sauransu.
Idan baku maye gurbin firikwensin O2 ɗinku ba lokacin da ya sami matsala, kuna haɗarin ƙarin farashin jigilar kaya, wanda zai iya shiga cikin dubban daloli ko kuɗin gida.
Ta yaya kuke bincika matsaloli tare da firikwensin O2?
Babban kayan aiki don magance abubuwan lantarki shine voltmeter na dijital da kuke buƙata.
Yadda ake gwada firikwensin O2 tare da multimeter
Saita multimeter ɗin ku zuwa kewayon volt 1, bincika wayar siginar firikwensin oxygen tare da fil, kuma dumama abin hawa na kusan mintuna biyar. Haɗa ingantaccen bincike na multimeter zuwa fil ɗin binciken baya, ƙasa binciken baƙar fata zuwa kowane ƙarfe kusa, kuma gwada karatun multimeter tsakanin 2mV da 100mV.
Ana buƙatar ƙarin matakai da yawa, don haka za mu ci gaba da bayyana duk matakan dalla-dalla.
- Ɗauki matakan kariya
Matakan faɗakarwa a nan za su taimake ka ka guje wa gwaje-gwaje masu tsauri da za ka yi da firikwensin O2 don nemo matsala tare da shi.
Da farko, kuna duba wayoyi a gani don ganin ko sun lalace ko kuma sun lalace.
Idan ba ku sami matsala tare da su ba, za ku ci gaba da amfani da kayan aikin dubawa kamar na'urar daukar hotan takardu na OBD don samun lambobin kuskure.
Lambobin kuskure irin su P0135 da P0136, ko duk wata lambar da ke nuna matsala tare da na'urar daukar hoto na iskar oxygen, yana nufin ba kwa buƙatar yin ƙarin gwaje-gwaje a kansa.
Koyaya, gwaje-gwajen multimeter sun fi cikakkun bayanai, don haka kuna iya buƙatar yin ƙarin gwaje-gwaje.
- Saita multimeter zuwa kewayon volt 1
Oxygen na'urori masu auna firikwensin suna aiki a cikin millivolts, wanda shine ma'aunin ƙarancin ƙarfin lantarki.
Don yin cikakken gwajin firikwensin iskar oxygen, kuna buƙatar saita multimeter ɗinku zuwa mafi ƙarancin ƙarfin wutar lantarki na DC; 1 volt kewayon.
Karatun da kuke samu kewayo daga millivolts 100 zuwa 1000 millivolts, wanda yayi daidai da 0.1 zuwa 1 volt bi da bi.
- Rear probe O2 firikwensin waya siginar
Kuna buƙatar gwada firikwensin O2 yayin da ake haɗa wayoyi masu haɗawa.
Shigar da binciken multimeter a cikin soket yana da wuyar gaske, don haka kuna buƙatar kiyaye shi tare da fil.
Kawai saka fil a cikin tashar waya mai fitarwa (inda wayar firikwensin ke toshe ciki).
- Sanya binciken multimeter akan fil ɗin binciken baya
Yanzu kun haɗa jagorar gwajin ja (tabbatacce) na multimeter zuwa jagorar gwajin baya, zai fi dacewa da shirin alligator.
Sai ka niƙa binciken baƙar fata (mara kyau) zuwa kowane saman ƙarfe kusa (kamar chassis ɗin motarka).
- Dumi motarka
Domin na'urori masu auna firikwensin O2 suyi aiki daidai, dole ne su yi aiki a yanayin zafi a kusa da 600 Fahrenheit (600°F).
Wannan yana nufin cewa dole ne ku fara da dumama injin abin hawan ku kamar minti biyar (5) zuwa 20 har sai abin hawa ya kai wannan yanayin.
Yi hankali lokacin da motar tayi zafi don kada ku ƙone kanku.
- Rage sakamakon
Da zarar kun sanya binciken a cikin madaidaitan wurare, lokaci yayi da za a duba karatun multimeter ɗin ku.
Tare da na'urar firikwensin oxygen mai dumi, ana tsammanin DMM zai ba da karatun da ke canzawa da sauri daga 0.1 zuwa 1 volt idan firikwensin yana da kyau.
Idan karatun ya tsaya iri ɗaya a wata ƙima (yawanci a kusa da 450 mV / 0.45 V), firikwensin ba shi da kyau kuma yana buƙatar maye gurbinsa.
Idan muka ci gaba, karatun da yake jingina akai-akai (kasa da 350mV / 0.35V) yana nufin cewa akwai ɗan ƙaramin mai a cikin cakuda mai idan aka kwatanta da abin da ake ci, yayin da karatun da yake da girma (sama da 550mV / 0.55V) yana nufin cewa akwai mai yawa. na man fetur. cakuda man fetur a cikin injin da rage yawan iska.
Hakanan ana iya haifar da ƙananan karatun ta hanyar toshewar tartsatsi mara kyau ko ɗigon shaye-shaye, yayin da babban karatun na iya haifar da abubuwa kamar su.
- O2 firikwensin yana da sako-sako da haɗin ƙasa
- Bawul ɗin EGR ya makale a buɗe
- Filogi mai walƙiya wanda ke kusa da firikwensin O2
- Lalacewar wayar firikwensin O2 saboda gubar silicon
Yanzu akwai ƙarin gwaje-gwaje don tantance ko firikwensin O2 yana aiki da kyau.
Waɗannan gwaje-gwajen suna amsawa ga gauraye ko babban cakuda kuma suna taimaka mana gano idan firikwensin yana aiki da kyau.
Gwajin Amsa Sensor Lean O2
Kamar yadda aka ambata a baya, cakuɗen raƙuman ruwa a zahiri yana haifar da firikwensin iskar oxygen don karanta ƙarancin wutar lantarki.
Lokacin da har yanzu karatun firikwensin yana canzawa tsakanin 0.1 V da 1 V, cire haɗin injin injin daga ingantacciyar iskar crankcase (PCV).
Ana sa ran multimeter yanzu zai fitar da ƙananan ƙimar 0.2V zuwa 0.3V.
Idan ba koyaushe ya tsaya tsakanin waɗannan ƙananan karatun ba, to, firikwensin ya yi kuskure kuma yana buƙatar maye gurbinsa.
Gwajin amsawar firikwensin O2 zuwa gauraya mai wadatarwa
Tare da babban gwajin haɗaɗɗiya, kuna son barin bututun injin da aka haɗa da PCV kuma cire haɗin bututun filastik zuwa taron tace iska maimakon.
Rufe ramin bututu akan taron tsabtace iska don kiyaye iska daga injin.
Da zarar an yi haka, ana sa ran na'urar multimeter zai nuna ƙimar ƙima ta kusan 0.8V.
Idan bai nuna ƙimar ƙima mai tsayi ba, to, firikwensin ya yi kuskure kuma yana buƙatar maye gurbinsa.
Kuna iya ƙara gwada wayoyi masu dumama firikwensin O2 tare da multimeter.
Dubawa O2 Sensor Ta Wayoyin Heater
Juya bugun kirar multimeter zuwa saitin ohmmeter kuma jin wayar firikwensin firikwensin O2 da tashoshin waya na ƙasa.
Yanzu haɗa tabbataccen gubar na multimeter zuwa ɗaya daga cikin fitattun firikwensin firikwensin waya na hita da mummunan gubar zuwa jagorar firikwensin baya na waya na ƙasa.
Idan da'irar firikwensin oxygen yana da kyau, zaku sami karatun 10 zuwa 20 ohms.
Idan karatunku bai faɗi cikin wannan kewayon ba, firikwensin O2 yana da lahani kuma yana buƙatar maye gurbinsa.
ƙarshe
Duba firikwensin O2 don lalacewa hanya ce da ta ƙunshi matakai da yawa da hanyoyin gwaji. Tabbatar da kammala su duka don gwajin ku ya ƙare, ko tuntuɓi kanikanci idan sun yi wahala.
Tambayoyi akai-akai
Nawa ohms ya kamata na'urar firikwensin oxygen ya karanta?
Ana sa ran firikwensin oxygen zai nuna juriya tsakanin 5 zuwa 20 ohms, dangane da samfurin. Ana samun wannan ta hanyar duba wayoyi masu dumama tare da wayoyi na ƙasa don lalacewa.
Menene kewayon wutar lantarki na yau da kullun don yawancin firikwensin O2?
Matsakaicin ƙarfin lantarki na yau da kullun don ingantaccen firikwensin O2 shine ƙimar canzawa cikin sauri tsakanin 100 millivolts da 1000 millivolts. Ana canza su zuwa 0.1 volts da 1 volts bi da bi.
