Yuav ua li cas kuaj lub lambda sojntsuam nrog tus ntsuas?

2024 Tus sau: Erin Ralphs | [email protected]. Kawg hloov kho: 2024-02-19 16:10

Lub tsheb niaj hnub muaj cov cuab yeej siv tau yooj yim, thiab lub cav tsis ua tiav yam tsis muaj tag nrho cov sensors. Ntawm cov no, ib tus tuaj yeem nco ntsoov lub luag haujlwm ntawm lub luag haujlwm ntawm lub crankshaft, lub kaum sab xis, tiv thaiv qhov kub thiab txias lub sijhawm. Tab sis muaj lwm yam tseem ceeb. Qhov no yog lambda sojntsuam. Qhov no sensor yog dab tsi thiab yuav kuaj nws li cas? Xav txog hauv peb tsab xov xwm niaj hnub no.

yam ntxwv

Lambda sojntsuam yog ib qho khoom siv me me uas ntsuas cov pa oxygen seem hauv lub tsheb cov pa roj. Nws tseem hu ua oxygen sensor. Nws yog nyob rau hauv qab ntawm lub tso pa manifold. Kev nkag mus rau lub sensor yog nqa los ntawm hauv qab, lossis los ntawm hauv qab lub hood (nyob ntawm hom thiab tsim ntawm lub tsheb).

Kuj tseem nco ntsoov tias tuaj yeem muaj ob peb lub sensors hauv qhov system. Ib qho yog ntsia tom qab lub catalyst, qhov thib ob - tom qab. Ob lub ntsiab lus zoo sib xws nrogkoj tus kheej. Nyob rau hauv qhov kev tshwm sim ntawm ib tug malfunction ntawm tsawg kawg yog ib tug ntawm lawv, cov teeb liab tsis raug yuav raug xa mus rau lub tshuab hluav taws xob cav. Lub kaw lus yuav npaj ib qho kev sib xyaw tsis ncaj ncees nrog kev nce ntxiv lossis, qhov sib txawv, txo qis ntawm cov roj av.

Paj siab

Ib qho xwm txheej tseem ceeb rau kev ua haujlwm ntawm lub sensor yog qhov kub thiab txias ntawm lub hau ceramic. Nws pib txheeb xyuas qhov concentration ntawm oxygen ions ntawm 300-400 degrees Celsius. Yog li ntawd, thaum lub sij hawm sov so, ECU yog coj los ntawm qhov nruab nrab tsis ua ntej lub taub hau heats. Tab sis nyob rau hauv xyoo tas los no, lub lambda sojntsuam tau hloov. Yog li, feem ntau nws yog nruab nrog lub rhaub. Nws yog powered los ntawm 12 V.

Yog vim li cas thiaj kuaj tau

Ua ntej koj kuaj lub lambda sojntsuam sensor, koj yuav tsum paub seb cov teeb meem puas muaj feem cuam tshuam rau nws qhov ua haujlwm tsis zoo. Yog tias cov khoom no tawg lawm, tus neeg tsav tsheb yuav ntsib teeb meem hauv qab no:

• Dips thaum lub tsheb acceleration.
• Jerks thaum sim khaws ceev.
• tsis ruaj tsis khov cav idling.
• Kev noj roj ntau ntxiv.
• Xaiv lub teeb ntawm lub ntsuas hluav taws xob.

Yog tias tsawg kawg yog ib qho ntawm cov teeb meem saum toj no tshwm sim, qhov no yog lub sijhawm rau kev kuaj xyuas kom ntxaws ntxiv ntawm lambda sojntsuam sensor los ntawm tus ntsuas. Tab sis muaj ntau txoj kev kuaj mob. Peb yuav xav txog lawv ntxiv.

Kev xaiv pov thawj

Muaj ntau txoj hauv kev yuav ua li cas kuaj lub lambda sojntsuam:

• Heater he alth diagnostics.
• Tshawb xyuas muajsiv voltage.
• Lambda teeb liab diagnostics.

thawj ob yog qhov yooj yim tshaj plaws. Thiab txhawm rau txheeb xyuas lub teeb liab ntawm lub sensor, rau qhov no koj xav tau lub pointer, tsis yog tus ntsuas digital.

Kev txiav txim siab qhov hluav taws xob hauv hluav taws xob cua sov

Yuav kuaj xyuas lub lambda tshuaj ntsuam li cas? Rau qhov no peb xav tau ib tug multimeter. Nws yuav tsum tau hloov mus rau voltmeter hom. Tom qab ntawd, koj yuav tsum sov lub cav kom nws kub yog 80-90 degrees. Tom ntej no, peb tua lub cav, tsis txhob tua lub ignition thiab tsis txhob disconnect tus sojntsuam connector (lub cev muaj peev xwm sau qhov no rau lub cim xeeb raws li ib tug yuam kev). Peb xyuas qhov voltage ntawm lub roj teeb nws tus kheej ua ntej. Nws yuav tsum yog tsawg kawg yog 12 volts. Cov xaim zoo rau lub tshuab cua sov mus los ntawm fuse lossis relay. Peb pom nws nyob rau hauv Circuit Court thiab txuas lub multimeter probes. Koj kuj yuav tsum nrhiav qhov "mas". Nws yog muab los ntawm lub cav ECU. Yog tias tsis muaj qhov hluav taws xob ntawm cov khoom siv hluav taws xob (tsawg dua 12 volts), ib qho ntawm cov kev sib cuag hauv qhov txuas feem ntau yuav ploj. Peb yuav tsum nrhiav qhov qhib Circuit Court thiab kho nws.

Koj tseem tuaj yeem paub seb qhov kev tiv thaiv qhov ntsuas cua sov muaj dab tsi. Yuav ua li cas kuaj lub lambda sojntsuam? Nrog lub tester, peb hloov mus rau qhov ntsuas qhov ntsuas qhov ntsuas thiab ntsuas qhov ntsuas no ntawm cov xaim hluav taws xob. Cov qib kuj yuav tsum yog tsawg kawg yog ob thiab tsis pub ntau tshaj kaum ohms. Txwv tsis pub, muaj kev so hauv kev sib cuag. Xws li lub sensor yuav tsum tau hloov.

Qhia qhov siv hluav taws xob

Yuav ua li cas txheeb xyuas lambda sojntsuam nrog multimeter? Txhawm rau ua qhov no, peb hloov lub cuab yeej rov qab mus rau qhov ntsuas qhov ntsuas hluav taws xob. Peb tig lub ignition ntawm lub tsheb. Nws tsis yog tsim nyog los ua kom sov lub sensor. Tom ntej no, peb ntsuas qhov voltage ntawm qhov tsis zoo thiab cov teeb liab xov hlau. Qhov taw qhia yuav tsum yog li 0.45 volts.

Tso cai khiav tawm yog 0.2 Volts. Yog tias qhov yuam kev no ntau dua li qub, feem ntau yuav yog lub sensor tsis zoo rau hauv av, lossis muaj teeb meem hauv lub teeb liab Circuit Court.

Kev Tshawb Fawb Kev Tshawb Fawb

Qhov no yog qhov haujlwm nyuaj tshaj plaws. Txhawm rau ua qhov no, peb xav tau lub tshuab ntsuas lub cev, lossis lub ntsuas hluav taws xob nrog lub ntsuas ntsuas. Diagnostics yog raws li nram no. Ua ntej kuaj lub lambda sojntsuam, thawj theem nws yog ib qho tsim nyog yuav tau ua kom sov lub cuab yeej mus rau qhov kub thiab txias. Ua li no, tig lub cav thiab cia nws nyob twj ywm rau peb mus rau tsib feeb. Tom qab ntawd peb txuas qhov kev sojntsuam tsis zoo ntawm lub tester mus rau lub cav cav. Peb txiav txim siab qhov sib cuag ntawm lub sensor (tej zaum yuav muaj ib, ob lossis plaub). Peb txuas qhov zoo davhlau ya nyob twg ntawm lub tester sojntsuam mus rau lub teeb liab hlau. Qhov voltage ntawm lub caij yuav tsum yog los ntawm 0.2 mus rau 0.9 volts thiab tig rau ntawm ib zaus ntawm yim mus rau kaum zaus hauv kaum vib nas this. Yog tias qhov hluav taws xob yog 0.45 volts thiab tsis hloov, lub caij feem ntau yuav muaj qhov tsis zoo thiab yuav tsum tau hloov.

Thov nco ntsoov: qhov voltage thaum kuaj mob yuav tsum sib txawv ntawm ntau yam. Yog tias qhov ntsuas no hloov pauv ib puag ncig 0.3-0.7 Volts, feem ntau yuav lub caij tsis zoo.

Nws tseem yuav tsum tau kuaj xyuas lub roj teeb hluav taws xob ntawm lub tshuab hluav taws xob lub tshuab hluav taws xob nrog lub ntsuas ntsuas (tus txheej txheem tau piav qhia saum toj no). Nws yog lub tshuab cua sov uas tuaj yeem ua rau lub cev tsis ua haujlwm.lambda soj ntsuam. Nws yuav tsis yog superfluous los xyuas nws hauv av.

Ntaus ntawm qhov muaj nuj nqis

Yog tias lub ntsuas sov sov thiab ua haujlwm zoo, qhov ntsuas hluav taws xob ntawm cov teeb liab tso tawm yuav tsum yog los ntawm 0.2 txog 1 Volt ntawm lub cav nrawm ntawm 2.5 txhiab ib feeb.

Thaum koj nias lub roj pedal, lub cuab yeej yuav tsum qhia meej 1 volt ntawm voltage. Thaum lub throttle kaw tam sim ntawd, qhov voltage ntawm lub tester yuav tsum poob mus rau xoom.

Cov kws tshaj lij hais tias oscilloscope yuav yog qhov tseeb tshaj plaws hauv kev kuaj mob no. Tus nqi ntawm cov cuab yeej no yog kwv yees li ib thiab ib nrab rau ob txhiab rubles.

Yuav ua li cas kuaj lub lambda sojntsuam nrog 4 xov hlau?

Cov khoom siv zoo li no feem ntau pom ntawm Mercedes thiab Volkswagen tsheb. Yuav ua li cas kuaj 4-xaim oxygen sensor? Ua ntej koj yuav tsum ntsuas cov qib tsis kam ntawm cov cua sov hu. Ob lub xov hlau dawb yog lub luag haujlwm rau nws. Nruab nrab ntawm lawv, lub nominal kuj yuav tsum yog li tsib ohms. Tom qab ntawd, peb khaws ib lub multimeter thiab txuas qhov zoo sojntsuam rau lub teeb liab tso zis. Nyob rau tib lub sij hawm, peb tig lub cav mus txog peb txhiab revolutions. Tuav lub pedal rau ob peb feeb. Yuav ua li cas mus xyuas lub lambda sojntsuam VAZ? Yog tsis tso cov roj pedal, peb ntsuas qhov voltage. Tom qab lub sij hawm no, nws yuav tsum yog los ntawm 0.3 mus rau 1 Volt. Thov nco ntsoov tias ntawm plaub-pin sensor, kev khiav hauv qhov nqaim kuj tsis tso cai. Yog hais tias qhov hluav taws xob yog los ntawm 0.4 mus rau 0.5 Volts, lub caij tau dhau los ua tsis tau.

Yuav ua li cas kuaj lub lambda sojntsuam ib leeg? Yog ibKoj muaj lub tshuab nqus tsev twj tso kua mis, koj tuaj yeem rub lub cable ntawm cov khoom siv manifold. Yog tias lub tsheb tau nruab nrog lub tshuab hluav taws xob hluav taws xob, koj yuav xav tau tus neeg pab cuam uas yuav tuav thiab, yog tias tsim nyog, tso lub accelerator ntawm koj cov lus txib.

Yog li, peb pom tias lub lambda sojntsuam yog dab tsi thiab yuav ua li cas kuaj nws ntau txoj hauv kev. Raws li koj tuaj yeem pom, kev ua haujlwm yooj yim, tab sis yuav tsum muaj qee yam khoom siv. Yam tsawg kawg, kev ntsuam xyuas yuav tsum tau ua nrog ntau- lossis voltmeter. Thiab rau kev kuaj mob kom ntxaws ntxiv, koj yuav xav tau oscilloscope.