Yuav ua li cas ntxuav lub lambda sojntsuam
Txheem
Cov pa oxygen sensor (aka lambda sojntsuam) yuav tsum txiav txim siab qhov concentration ntawm cov pa dawb hauv cov pa tawm ntawm lub cav combustion sab hauv. Qhov no tshwm sim ua tsaug rau O2 analyzer uas tau tsim rau hauv nws. Thaum lub sensor yog clogged nrog tsis-combustible soot, cov ntaub ntawv muab los ntawm nws yuav tsis raug.
Yog tias pom teeb meem lambda nyob rau theem pib, kev kho cov pa oxygen sensor yuav pab kho lawv. Ua-nws-koj tus kheej tu ntawm lambda sojntsuam tso cai rau koj rov qab mus rau kev ua haujlwm zoo thiab txuas ntxiv nws lub neej. Tab sis qhov no tsis muaj tseeb nyob rau hauv txhua rooj plaub, thiab cov kev ua tau zoo nyob ntawm cov txhais tau tias siv thiab txoj kev siv. Yog tias koj xav paub yog tias ntxuav lub lambda sojntsuam pab nrog ntau yam ua haujlwm tsis zoo, yuav ua li cas ntxuav nws los ntawm khawb thiab yuav ua li cas - nyeem tsab xov xwm mus rau qhov kawg.
Kwv yees cov peev txheej ntawm lambda sojntsuam yog kwv yees li 100-150 txhiab km, tab sis vim yog cov khoom siv roj ntxiv, roj av tsis zoo, roj burnout thiab lwm yam teeb meem, nws feem ntau txo mus rau 40-80 txhiab. Vim tias qhov no, ECU tsis tuaj yeem siv cov roj av kom raug, qhov sib xyaw ua ntshiv lossis nplua nuj, lub cav pib khiav tsis sib xws thiab poob traction, qhov yuam kev "Check engine" tshwm rau ntawm lub vaj huam sib luag.
Cov teeb meem Oxygen Sensor
kev puas tsuaj ntawm lambda sojntsuam, raws li cov neeg tsim khoom, tsis tuaj yeem raug tshem tawm, thiab yog tias tsis ua haujlwm nws yuav tsum tau hloov nws mus rau ib qho tshiab lossis muab snag. Txawm li cas los xij, hauv kev xyaum, yog tias koj pom muaj teeb meem ua haujlwm hauv lub sijhawm, koj tuaj yeem txuas ntxiv nws lub neej me ntsis. Thiab tsis tsuas yog vim kev ntxuav, tab sis kuj los ntawm kev hloov cov roj zoo. Yog tias peb tab tom tham txog kev ua qias tuaj, ces koj tuaj yeem ntxuav lub lambda sojntsuam kom nws pib muab cov ntawv nyeem kom raug.
Nws yog qhov zoo dua los kho lub lambda tsuas yog tom qab kev kuaj mob ua ntej thiab kev kuaj xyuas, vim tias qhov no tsuas yog siv sijhawm pov tseg xwb.
Kev tsom mus rau qhov ua rau, raws li cov ntaub ntawv ua ntej thaum kuaj xyuas cov pa oxygen sensor, nws yuav muaj peev xwm hais kwv yees seb puas muaj cov ntsiab lus hauv kev ntxuav.
| Cov cim qhia ntawm LZ tawg | Vim li cas qhov no tshwm sim | Lub tsheb coj li cas? |
|---|---|---|
| Hull depressurization | Ntuj hnav thiab overheating ntawm lub sensor | Teeb meem nrog XX, ib qho kev sib xyaw ua ke nkag mus rau hauv lub cav combustion, kev siv roj ntau ntxiv, muaj ntxhiab tsw zoo los ntawm cov pa tawm. |
| Sensor overheating | Nws tshwm sim nrog qhov hluav taws xob tsis raug: nrog lub kauj tawg lossis cov xov hlau tsis raug, sib txuam tsis raug lossis tswm ciab qias neeg | Teeb meem nrog XX, combustion khoom hlawv tawm nyob rau hauv lub tso pa ib ntsuj av tau, engine tripping, poob ntawm traction, txhaj tshuaj nyob rau hauv lub muffler, pops nyob rau hauv cov khoom noj. |
| Kev thaiv vaj tse | Nws tshwm sim vim refueling nrog cov roj av tsis zoo los yog tsub zuj zuj ntawm deposits vim siab mileage ntawm lub tsheb | Kev ua haujlwm tsis ruaj khov ntawm lub cav combustion sab hauv, poob ntawm kev sib tw, kev siv roj ntau ntxiv, muaj zog tsis hnov tsw ntawm cov yeeb nkab |
| Kev puas tsuaj | Cov kab mob rot, tawg hauv qhov txias, luv rau hauv av, thiab lwm yam. | Kev ua haujlwm tsis ruaj khov ntawm lub cav ntawm qhov tsis ua haujlwm, me ntsis poob ntawm lub cav teb thiab traction, nce roj mileage |
| Kev puas tsuaj ntawm ceramic ib feem ntawm LZ | Tom qab ntaus lub sensor, piv txwv li, tom qab muaj kev huam yuaj, kov ib qho kev cuam tshuam nrog cov khoom seem, lossis kev kho tsis tu ncua ntawm qhov tso pa tawm | Kev ua haujlwm tsis ruaj khov ntawm kev ua haujlwm tsis ua haujlwm, tripling, nce kev noj, poob ntawm traction |
Raws li koj tuaj yeem pom, txhua yam teeb meem oxygen sensor tshwm sim raws li cov tsos mob tib yam. Qhov no yog vim qhov tseeb tias yog tias lambda xa cov ntaub ntawv tsis raug ntawm qhov sib xyaw ntawm cov khoom sib xyaw rau ECU, "lub hlwb" pib siv cov roj tsis raug thiab tswj lub sijhawm ignition. Yog tias tsis muaj lub teeb liab los ntawm lub sensor tag nrho, ECU muab lub tshuab hluav taws xob sab hauv rau hauv kev ua haujlwm kub ntxhov nrog "nruab nrab" tsis.
Yog tias qhov kev kuaj mob tsis tau qhia txog cov teeb meem ntawm cov khoom siv nrog lub ntsuas hluav taws xob (qhov tawg, deformations, tawg), tab sis tsuas yog cov kab mob hauv nruab nrab ntawm nws cov cua sov los yog cov ntsiab lus rhiab nws tus kheej, koj tuaj yeem sim rov qab kho nws. Tab sis ua ntej koj ntxuav cov pa oxygen sensor los ntawm cov pa roj carbon deposits, koj yuav tsum xyuas kom meej tias nws cov hlau yog ua hauj lwm (tej zaum nws yuav txaus los tshem tawm cov qhib Circuit Court, ntxuav cov neeg los yog hloov lub nti), raws li zoo raws li ib txwm ua hauj lwm ntawm lub. ignition system.
Nws puas tuaj yeem ntxuav lub lambda?
Kev rov ua haujlwm ntawm cov pa oxygen sensor nyob rau hauv cov chaw nres tsheb yog ua tau yog tias peb tab tom tham txog nws cov kab mob sib kis nrog cov khoom tso tawm los ntawm cov khoom ntawm combustion roj. Nws tsis muaj txiaj ntsig los ntxuav lub cev lub cev puas tsuaj, nws yuav tsum tau hloov pauv. Yog tias koj pom tsuas yog lambda qias neeg sojntsuam, decarbonizing yuav coj nws rov qab los. Puas yog nws ua tau los ntxuav lub lambda sojntsuam tsis tsim nyog txhawj txog. Txij li thaum lub sensor no yog tsim los ua hauj lwm nyob rau hauv ib tug nruj ib puag ncig ntawm kub gases, nws tsis ntshai ntawm tshav kub, ntxuav thiab ib co caustic tshuaj. Tsuas yog nyob rau hauv thiaj li yuav xaiv cov txhais tau tias los ntawm kev ntxuav yuav ua tau ntau yam kev nyab xeeb, nws yuav tsum tau txiav txim seb hom sensor.
Ua ntej ntxuav lub lambda sensor los ntawm carbon deposits, txiav txim siab nws hom. Muaj ob hom kev yooj yim:
Sab laug zirconia, txoj cai titanium
- Zirconia. Galvanic hom sensors uas tsim hluav taws xob thaum ua haujlwm (los ntawm 0 txog 1 volt). Cov sensors no yog pheej yig dua, unpretentious, tab sis txawv nyob rau hauv tsawg raug.
- Titanium. Resistive type sensors uas hloov qhov tsis kam ntawm qhov ntsuas thaum lub sijhawm ua haujlwm. Ib qho hluav taws xob yog siv rau lub caij no, uas txo qis vim qhov tsis kam (vim li ntawm 0,1-5 volts), yog li qhia txog qhov sib xyaw ntawm qhov sib xyaw. Xws li sensors yog qhov tseeb dua, maj mam thiab kim dua.
Nws muaj peev xwm paub qhov txawv ntawm zirconium lambda sojntsuam (oxygen sensor) los ntawm titanium ib qho pom, raws li ob lub cim:
- loj. Titanium oxygen sensors ntau dua thiab muaj cov xov me me.
- Nyob ntawm tej. Cov sensors txawv nyob rau hauv cov xim ntawm lub braid: lub xub ntiag ntawm liab thiab daj nyob ntawm tej yog guaranteed qhia titanium.
Kev ntxuav lambda los ntawm cov pa phem yog ua los ntawm cov tshuaj nquag ntxiv, xws li cov kua qaub thiab cov kuab tshuaj organic. Zirconium sensors, tsis tshua muaj rhiab heev, tuaj yeem ntxuav nrog cov kua qaub thiab cov kuab tshuaj hnyav, thaum titanium sensors xav tau kev tuav ntau dua. Nws muaj peev xwm tshem tawm cov pa roj carbon deposits ntawm lambda ntawm ob hom xwb nrog ib tug ntau dilute acid los yog cov organic hnyav.
Kuv tuaj yeem ntxuav lub lambda sojntsuam li cas
Thaum xaiv yuav ua li cas los ntxuav lub lambda sojntsuam los ntawm cov pa roj carbon deposits, koj yuav tsum tam sim ntawd muab pov tseg uas muaj peev xwm aggression zog uas ua puas lub sensor. Nyob ntawm seb hom sensor, cov no suav nrog:
- rau zirconium oxide (ZrO2) - hydrofluoric acid (hydrogen fluoride tov HF), concentrated sulfuric acid (ntau tshaj 70% H2SO4) thiab alkalis;
- rau titanium oxide (TiO2) - sulfuric acid (H2SO4), hydrogen peroxide (H2O2), ammonia (NH3), nws kuj tsis tsim nyog los nthuav tawm lub sensor rau cua sov thaum muaj chlorine (piv txwv li, hauv hydrochloric acid HCl), magnesium , calcium, ceramics tuaj yeem cuam tshuam nrog lawv.
Nws kuj tseem yuav tsum tau siv cov tshuaj uas muaj tshuaj lom neeg thiab ua rau muaj kev cuam tshuam rau cov pa roj carbon deposits, tab sis nruab nrab - nyob rau hauv kev sib raug zoo rau lub sensor nws tus kheej. Muaj 3 txoj hauv kev los ntxuav cov pa roj carbon deposits ntawm lub sensor oxygen:
Orthophosphoric acid rau lambda sojntsuam tu
- inorganic acids (sulfuric, hydrochloric, orthophosphoric);
- organic acids (acetic);
- organic solvents (lub teeb hydrocarbons, dimexide).
Tab sis ntxuav lub lambda sojntsuam nrog acetic acid los yog sim tshem cov deposits nrog mortar citric acid yuav tsum tsis muaj nuj nqis kiag li. Nyeem hauv qab no kom paub yuav ua li cas ntxuav lub lambda sojntsuam sensor nrog ntau yam tshuaj.
Ua-nws-koj tus kheej lambda sojntsuam tu
yog li ntawd kev ntxuav lub lambda sojntsuam hauv tsev tsis siv sijhawm ntau, koj tuaj yeem saib hauv lub rooj ntawm qhov kev xav tau thiab lub sijhawm siv thaum siv ib lossis lwm lub cuab yeej. Qhov no yuav pab txiav txim seb yuav ua li cas thiab yuav ua li cas ntxuav cov pa oxygen sensor nrog koj tus kheej tes.
| Txhais tau tias | tshwm sim | Lub Sijhawm Ntxuav |
|---|---|---|
| Carb cleaner (carburetor thiab throttle cleaner), organic solvents (kerosene, acetone, thiab lwm yam) | Yuav mus rau kev tiv thaiv, tsis tiv nrog zoo soot | Cov deposits ntom ntom yuav luag tsis tau ntxuav, tab sis lub nrawm nrawm tso cai rau koj ntxuav cov khoom me me thaum ntxov. |
| Dimexide | Nruab nrab efficiency | Ntxuav tawm lub teeb tso rau hauv 10-30 feeb, tsis muaj zog tiv thaiv cov deposits hnyav |
| Organic acids | Lawv ntxuav tawm tsis muaj kuab paug hnyav heev, tab sis rau lub sijhawm ntev, lawv tsis muaj txiaj ntsig tiv thaiv cov av nplaum. | |
| Orthophosphoric acid | Tshem cov deposits zoo | Ntev ntev, los ntawm 10-30 feeb mus rau ib hnub |
| Sulfuric acid | Los ntawm 30 feeb mus rau ob peb teev | |
| Hydrochloric acid |
Kev ntxuav kom raug cov pa oxygen sensor yuav tsis ua haujlwm yam tsis muaj cov cuab yeej zoo li no:
Yuav ua li cas ntxuav lub lambda sojntsuam - yees duab nrog tu txheej txheem
- iav hlab ntsha rau 100-500 ml;
- Lub tshuab ziab plaub hau muaj peev xwm ua tau qhov kub ntawm 60-80 degrees;
- txhuam txhuam.
Ua ntej ntxuav lub lambda sojntsuam sensor, nws raug nquahu kom sov nws mus rau qhov kub me ntsis hauv qab 100 degrees. Qhov ntawd yog dab tsi lub tshuab ziab plaub hau rau. Nws yog undesirable siv qhib hluav taws, vim overheating yog detrimental rau lub sensor. Yog tias koj mus deb heev nrog qhov kub thiab txias, xws li kev ntxuav ntawm lambda nrog koj tus kheej txhais tes yuav xaus nrog kev yuav khoom ntawm ib feem tshiab!
Phosphoric acid ntxuav
Ntxuav lub zirconium lambda sojntsuam siv lub tshuab hloov xeb
Kev ntxuav cov lambda nrog phosphoric acid yog ib qho kev xyaum ua tau zoo. Cov kua qaub no muaj zog heev, yog li nws muaj peev xwm decompose carbon deposits thiab lwm yam deposits yam tsis muaj kev puas tsuaj rau lub sensor nws tus kheej. Concentrated (ntshiab) acid yog haum rau zirconium probes, thaum dilute acid yog haum rau titanium probes.
Nws tuaj yeem siv tsis tau tsuas yog hauv nws daim ntawv ntshiab (nyuaj mus nrhiav), tab sis kuj muaj nyob rau hauv cov khoom siv tshuaj (soldering acid, acid flux, xeb converter). Ua ntej ntxuav cov pa oxygen sensor nrog cov kua qaub, nws yuav tsum tau sov so (saib saum toj).
Ntxuav lub lambda sojntsuam nrog ib tug xeb converter, soldering los yog ntshiab phosphoric acid muaj cov nram qab no cov kauj ruam:
- Sau lub khob iav nrog cov kua qaub txaus kom submerge lub lambda sensor los ntawm carving.
- Submerge sensor ua hauj lwm kawg rau hauv acid, tawm hauv nws sab nraud saum npoo ntawm cov kua, thiab kho nyob rau hauv txoj hauj lwm no.
- Soak lub sensor hauv acid los ntawm 10-30 feeb (yog hais tias lub qhov txhab me me) mus txog 2-3 teev (muaj kuab paug hnyav), ces koj tuaj yeem pom yog tias cov kua qaub tau ntxuav tawm cov pa roj carbon deposits.
- Txhawm rau ua kom cov txheej txheem nrawm, koj tuaj yeem ua kom sov lub thawv ua kua siv lub tshuab ziab plaub hau lossis roj hlawv thiab da dej.
Hlawv cov pa roj carbon deposits ntawm oxygen sensor tom qab ntxuav nrog acid
Qhov thib ob txoj kev los ntxuav lub lambda sojntsuam nrog acid yog nrog hluav taws:
- Dip lub sensor nrog cov haujlwm ua haujlwm hauv cov kua qaub.
- Luv luv coj mus rau lub nplaim taws, kom cov kua qaub pib kub thiab evaporate, thiab cov tshuaj tiv thaiv accelerates.
- Periodically soak lub sensor hauv acid kom rov ua dua cov reagent zaj duab xis.
- Tom qab ntub dej, rov ua kom sov dua ntawm lub qhov cub.
- Thaum cov deposits tawm, yaug ib feem nrog dej huv.
Cov lus teb rau lo lus nug ntawm seb lambda puas tuaj yeem ntxuav nrog phosphoric acid nyob ntawm qhov kev coj ua ntawm qhov kev sib kis. Qhov kev pheej hmoo ntawm kev ntxuav tawm lub teeb tso nyiaj yog qhov siab heev, thiab cov plaque ruaj khov yuav tsis raug ntxuav kom yooj yim. Los yog koj yuav tsum tau ntub dej kom ntev heev (txog ib hnub), lossis siv cua sov.
Ntxuav nrog carburetor ntxuav
Kev tu lub lambda nrog lub carburetor thiab lub tshuab nqus tsev nqus tsev vacuum yog ib txoj hauv kev, tab sis tsis zoo li cov kua qaub. Tib yam siv rau volatile organic solvents xws li roj av, acetone, uas ntxuav tawm lub lightest av. Carbcleaner yog qhov zoo dua rau qhov no vim nws lub hauv paus aerosol thiab siab, uas cuam tshuam cov av, tab sis cov lus teb rau cov lus nug ntawm seb puas muaj peev xwm ntxuav lub lambda sojntsuam ntawm cov tshuaj ntxuav carburetor feem ntau tsis zoo. Tsuas yog me me deposits feem ntau ntxuav tawm, thiab qhov no tsuas yog pampering.
Xws li kev kho mob tuaj yeem siv sijhawm ntev los tiv thaiv lub hom phiaj, ntxuav tawm lub teeb tso ntawm nws thaum lawv nyuam qhuav pib tsim.
Ntxuav lub lambda sojntsuam nrog sulfuric acid
Kev ntxuav lub lambda sojntsuam nrog sulfuric acid yog qhov txaus ntshai dua, tab sis txoj hauv kev zoo heev kom tshem tawm cov pa roj carbon ntau ntawm qhov chaw sensor. Ua ntej koj ntxuav lub lambda sojntsuam tom tsev, koj yuav tsum tau txais nws kuj nyob rau hauv ib tug concentration ntawm 30-50%. Cov electrolyte rau cov roj teeb yog qhov zoo, uas tsuas yog muaj qhov zoo siab thiab yog muag hauv cov khw muag tsheb.
Siv xws li cov kua qaub lambda sojntsuam ntxuav, koj tuaj yeem ua tiav hauv kev sib ntaus sib tua uas tsis raug tshem tawm los ntawm lwm txoj kev. Cov txheej txheem ntxuav yog raws li nram no:
- Kos cov kua qaub rau hauv lub nkoj mus rau theem uas tso cai rau koj raus lub sensor raws cov xov.
- Raus lub sensor thiab kho nws vertically.
- Soak lub lambda sojntsuam hauv cov kua qaub rau 10-30 feeb, nplawm qee zaus.
- Nrog rau cov pa phem tsis tu ncua - nce lub sij hawm raug mus rau 2-3 teev.
- Tom qab ntxuav, yaug thiab so lub sensor.
Koj tuaj yeem ua kom cov txheej txheem los ntawm cua sov, tab sis tsis txhob overheating thiab evaporating cov kua qaub.
Hydrochloric acid ua haujlwm zoo ib yam, tab sis nws kuj hnyav dua, yog li nws yog siv rau qhov tsis muaj zog thiab xav tau kev saib xyuas ntxiv thaum tuav. Hydrochloric acid yog pom, piv txwv li, hauv qee lub dab ntxuav muag.
Cov lus teb rau lo lus nug seb puas muaj peev xwm ntxuav lub lambda sojntsuam nrog sulfuric acid lossis hydrochloric acid yog qhov zoo tsuas yog rau zirconium oxygen sensors. Hydrochloric acid yog contraindicated rau titanium DC (titanium oxide reacts nrog chlorine), thiab sulfuric acid yog tso cai nyob rau hauv tsawg concentrations (kwv yees li 10%).qhov twg nws tsis zoo heev.
Ntxuav lub lambda sojntsuam nrog dimexide
Ib txoj hauv kev yooj yim yog los ntxuav cov pa oxygen sensor nrog dimexide, cov tshuaj dimethyl sulfoxide uas muaj cov khoom ntawm cov organic hnyav hnyav. Nws tsis hnov mob nrog zirconium thiab titanium oxides, yog li nws tsim nyog rau ob hom DC, thaum ntxuav tawm qee cov pa roj carbon deposits ib yam nkaus.
Kev ntxuav lub lambda sojntsuam nrog dimexide pib nrog kev npaj ntawm lub tshuab ntxhua khaub ncaws, uas pib crystallize ntawm qhov kub ntawm +18 ℃. Txhawm rau ua kom nws liquefy, koj yuav tsum nqa lub raj mis ntawm cov tshuaj thiab ua kom sov hauv "dej da dej".
Qhov tshwm sim ntawm kev ntxuav nrog dimexide tom qab 20 feeb
Nws yog qhov tseeb los ntxuav lub lambda sojntsuam nrog dimexide zoo ib yam li thaum siv cov kua qaub, tsuas yog nws yuav tsum tau rhuab ib ntus. Nws yog ib qho tsim nyog yuav tsum tau dip qhov ua haujlwm ntawm oxygen sensor rau hauv lub nkoj nrog kev npaj thiab khaws cia rau hauv nws, nplawm qee zaus. Kev tu cov lambda nrog dimexide yuav tsum tau cua sov kom tsis txhob ua kom cov txheej txheem kom tsis txhob crystallization!
Feem ntau ib nrab ib teev mus rau ib teev ntawm qhov kis tau txaus. Nws tsis muaj txiaj ntsig los khaws lub sensor hauv lub tshuab ntxhua khaub ncaws kom ntev, yam tsis tau yaj hauv ib teev tsis zoo li yuav tawm hauv ib hnub.
Yuav ua li cas tsis ntxuav lub lambda sojntsuam ntawm lub tsheb
cov lus pom zoo tseem ceeb ntawm yuav ua li cas tsis ntxuav lub lambda sojntsuam nrog koj tus kheej txhais tes - tsis ua raws li cov lus qhia txog kev sib raug zoo ntawm cov kua qaub nrog cov khoom siv sensor. Tab sis kuj tsis txhob ua cov hauv qab no:
- Kev kub ceev thiab txias. Vim tias qhov kub thiab txias hloov, qhov ceramic ntawm lub sensor (tib yam zirconium lossis titanium oxide) tuaj yeem tawg. Yog vim li cas Tsis txhob overheat lub sensor, thiab tom qab ntawd muab tso rau hauv lub tshuab ntxhua khaub ncaws txias. Yog tias peb ua kom cov txheej txheem los ntawm cua sov, ces cov kua qaub yuav tsum sov, thiab coj mus rau qhov hluav taws kub yuav tsum yog lub sij hawm luv luv (me ntsis ntawm vib nas this), thiab tsis kaw.
- Tshem tawm carbon deposits mechanically. Abrasive cov neeg ua haujlwm puas tsuaj rau qhov chaw ua haujlwm ntawm lub sensor, yog li tom qab ntxuav nrog emery lossis cov ntaub ntawv, nws tuaj yeem muab pov tseg.
- Sim ntxuav los ntawm tapping. Yog tias koj khob nyuaj nrog nws, txoj hauv kev ntawm cov pob zeb tawm me me, tab sis qhov kev pheej hmoo ntawm kev tawg ceramics yog siab heev.
Yuav ua li cas los txiav txim qhov ua tau zoo ntawm lub lambda sojntsuam?
Qhov tshwm sim ntawm kev ntxuav lub lambda sojntsuam
Ntxuav lub lambda sojntsuam tsis yog panacea rau tag nrho nws cov teeb meem. Chemically active additives tsuas yog tshem tawm cov deposits thiab deposits, lub crust ntawm uas tiv thaiv lub sensor los ntawm ntes oxygen nyob rau hauv lub pa gases.
Txawm hais tias ntxuav lub lambda sojntsuam yuav pab tau nyob ntawm seb qhov kev ua qias tuaj tsis tu ncua, thiab tsis muaj lwm yam teeb meem nrog cov roj thiab qhov hluav taws xob.
Yog hais tias DC yog leaky, tsis tuaj yeem sib piv cov ntawv nyeem nrog "kev siv" huab cua, qhov chaw ceramic yog tawg, tawg los ntawm overheating - tsis muaj dab tsi yuav hloov tom qab ntxuav. Qhov tshwm sim yuav tsis tuaj txawm tias cov pa roj carbon deposits raug tshem tawm tsuas yog los ntawm kev tiv thaiv hlau, txij li lub sensor nws tus kheej nyob hauv.
Yuav ua li cas xyuas lub lambda sojntsuam tom qab ntxuav
txhawm rau txheeb xyuas lub lambda sojntsuam tom qab ntxuav nws, nws raug nquahu kom txuas rau ECU ntawm OBD-2 thiab ua tiav qhov yuam kev rov pib dua. Tom qab ntawd, koj yuav tsum pib lub cav, cia nws khiav, caij tsheb thiab suav qhov yuam kev dua. Yog tias cov txheej txheem ua tiav, Lub Tsheb Tshawb Xyuas Lub Teeb yuav raug kaw thiab cov teeb meem lambda yuav tsis rov tshwm sim.
Koj tuaj yeem tshawb xyuas lub sensor yam tsis muaj OBD-2 scanner nrog multimeter. Ua li no, nrhiav cov teeb liab xaim hauv nws cov pinout thiab ua cov txheej txheem hauv qab no.
- Pib lub cav combustion sab hauv thiab ua kom sov, kom DC kom ncav cuag qhov kub thiab txias.
- Qhib lub multimeter hauv DC voltage ntsuas hom.
- Txuas mus rau lambda teeb liab xaim (raws li tus pinout) yam tsis muaj kev cuam tshuam lub nti nrog lub "+" sojntsuam, thiab nrog "-" sojntsuam rau hauv av.
- Saib cov ntawv nyeem: hauv kev ua haujlwm, lawv yuav tsum hloov pauv ntawm 0,2 mus rau 0,9 volts, hloov tsawg kawg 8 zaug hauv 10 vib nas this.
Graphs ntawm qhov voltage ntawm oxygen sensor nyob rau hauv tus qauv thiab nyob rau hauv cov ntaub ntawv ntawm kev puas tsuaj
Yog tias cov ntawv nyeem ntab - lub sensor ua haujlwm, txhua yam zoo. Yog tias lawv tsis hloov pauv, piv txwv li, lawv khaws cia ntawm qib ntawm 0,4-0,5 volts txhua lub sijhawm, lub sensor yuav tsum tau hloov. Qhov tsis hloov pauv qhov tseem ceeb (txog 0,1-0,2 lossis 0,8-1 volts) yuav qhia tau tias ob qho tib si kev puas tsuaj ntawm cov pa oxygen sensor thiab lwm yam malfunctions ua rau muaj kev sib tov tsis raug.
Puas muaj txiaj ntsig los ntxuav cov pa oxygen sensor?
Thaum kawg, koj tuaj yeem txiav txim siab ncaj qha rau kev tu kom huv los ntawm kev tsav tsheb me ntsis. Yog tias kev ua haujlwm ntawm cov pa oxygen sensor tau rov qab los, qhov tsis ua haujlwm yuav ua kom zoo dua, ICE lub zog thiab lub zog teb yuav rov qab mus rau qhov qub, thiab kev siv roj yuav txo qis.
Tab sis nws tsis yog ib txwm ua tau kom nkag siab tam sim ntawd seb puas ntxuav lub lambda sojntsuam tau pab: kev tshuaj xyuas qhia tias yam tsis tau rov pib dua lub khoos phis tawj, qee zaum koj yuav tsum tau mus ncig ib hnub lossis ob hnub ua ntej qhov tshwm sim tshwm.
