Yuav ua li cas txiav txim siab tias cov catalyst yog txhaws: cov paib

2024 Tus sau: Erin Ralphs | [email protected]. Kawg hloov kho: 2024-02-19 16:11

Lub tshuab tso pa yog qhov tseem ceeb ntawm txhua lub tsheb. Tau ntau xyoo, nws tau raug txhim kho, thiab tam sim no yuav luag tag nrho cov tsheb tau muab nrog cov catalyst. Cov khoom no yog dab tsi thiab yuav ua li cas txiav txim siab tias cov catalyst yog clogged? Cov tsos mob ntawm kev ua haujlwm tsis zoo thiab cov cuab yeej ntawm lub caij - tom qab hauv peb tsab xov xwm.

Destination

Lub npe tag nrho ntawm lub ntsiab yog lub catalytic converter. Nws pab txo qis theem ntawm emissions ntawm cov teeb meem tshuaj mus rau hauv cov huab cua uas nkag mus rau hauv nrog cov pa pa.

siv qhov twg?

Cov khoom no yog siv rau tag nrho cov diesel thiab roj av cav nrog Euro-3 qauv thiab siab dua. Lub catalytic converter tau teeb tsa tam sim tom qab cov yeeb nkab tso tawm - tom qab lub tso pa tawm.

Device

Ib yam khoom muaj ntau yam. Cov no yog lub cev, cov cab kuj thaiv thiab thermal rwb thaiv tsev. Qhov thib ob yog lub ntsiab tseem ceeb hauv qhov "chain". Lub thaiv yog ua los ntawm cov ceramics tshwj xeeb, uas tsis ntshai ntawm qhov kub thiab txias. Los ntawm kev tsim, ntu no yog ib txheej ntawm cov hlwb.

Lawv yog qhov tseem ceebnce qhov chaw sib cuag ntawm cov ceramic "core" nrog cov pa roj. Nyob rau saum npoo ntawm cov hlwb no muaj cov khoom tshwj xeeb (catalysts). Cov no yog palladium, platinum thiab rhodium. Cov ntsiab lus no ua kom lub sijhawm ntawm cov tshuaj tiv thaiv. Palladium thiab platinum belongs rau ib tug xov tooj ntawm oxidation catalysts. Ua tsaug rau lawv, cov hydrocarbons uas muaj nyob hauv cov pa roj tau hloov mus rau hauv dej vapor; carbon monoxide oxides rau hauv carbon dioxide. Rhodium yog ib qho kev txo qis. Nws hloov nitric oxide rau hauv nitrogen tsis muaj teeb meem. Ua ke, tag nrho peb cov tshuaj lom neeg txo qis cov tshuaj phem hauv cov pa tawm.

Tus qauv tsim, tus neeg nqa khoom thaiv yog nyob rau hauv rooj plaub hlau. Nruab nrab ntawm ob lub ntsiab lus no yog ib txheej ntawm thermal rwb thaiv tsev. Ib qho oxygen sensor kuj nyob hauv lub converter. Lub ntsiab mob rau kev ua haujlwm ntawm lub catalytic converter yog qhov kub ntawm cov pa roj (kwv yees li 300 degrees). Thaum rhuab mus rau qib no, rhodium, palladium thiab platinum tuaj yeem cuam tshuam txog 90 feem pua ntawm cov khoom tsis zoo uas yuav nkag mus rau hauv huab cua.

Yuav ua li cas txheeb xyuas qhov teeb meem?

Dab tsi yog cov cim qhia ntawm qhov clogged catalytic converter? Muaj ntau cov tsos mob vim tias koj tuaj yeem pom qhov ua tsis tau zoo ntawm lub caij no:

• Lub tsheb pib nyuaj.
• Muaj qhov sib txawv hauv kev txav, uas qee zaum ploj mus.
• Lub teeb "Check Engine" yog nyob rau.

Yog vim li cas rau qhov tsis zoo acceleration dynamics tau piav qhia los ntawm qhov qis dhau ntawm cov catalyst.

Qee zaum nws tshwm sim tias lub tsheb yooj yimpicks ceev ntawm 150 km / h thiab tom qab ntawd, nres, NW nyuam qhuav nrawm mus rau 60. Yog li ntawd, lub cav kev ua tau zoo txo qis (tsawg lub tog raj kheej cua). Lub cav tsis tuaj yeem ntes tau ib feem tshiab ntawm huab cua, vim tias cov pa pa tawm tsis tuaj yeem tawm hauv lub cev ib txwm - lawv "tso tseg" hauv chav combustion.

Vim li cas thiaj li tshwm sim?

Yog tias koj muaj lub tshuab hloov pauv catalytic, cov paib (nws tsis muaj teeb meem yog tias nws yog diesel lossis roj av) ntawm nws qhov ua tsis tau zoo yuav pw hauv cov pa taws ntau hauv cov pa. Lawv muaj ib feem ntawm cov roj (qhov no yog ntuj), tab sis thaum lub cav "noj" ib liter ib txhiab kilometers, nws pib nyob twj ywm nyob rau hauv lub converter hlwb. Tsis tas li ntawd, cov cim qhia ntawm qhov clogged catalyst yog cov kab me me ntawm cov cell hla dhau. Vim lub siab concentration ntawm resins thiab impurities nyob rau hauv cov roj, lawv tau yooj yim clogged nyob rau hauv lub caij no.

Nco ntsoov tias cov roj tsis zoo ua lub luag haujlwm tseem ceeb hauv lub neej ntawm cov catalyst. Nrog rau kev siv ntau zaus, cov roj tsis zoo nyob hauv qhov tso pa tawm, tsis muaj sijhawm los hlawv tawm hauv chamber. Qhov no tuaj yeem ua rau overheating ntawm qhov chaw ntawm cov catalyst. Kev puas tsuaj rau tshuab kuj ua lub luag haujlwm tseem ceeb. Qhov cuam tshuam me ntsis ntawm qhov tsis sib xws (qhov nrawm tib yam) yuav ua rau lub caij deform, vim nws yuav tsis ua haujlwm li qub. Cov khoom me me uas tau tawg tawm hauv lub catalyst kab noj hniav yooj yim clog me honeycombs. Yog li, cov cim tseem ceeb ntawm cov khoom siv hluav taws xob txhaws (VAZ-2172 tsis muaj qhov tshwj xeeb) cuam tshuam nrog qhov tsis muaj peev xwm ntawm lub kaw lus "tso tawm" cov pa hluav taws xob ib txwm muaj,dab tsi lawv stagnate nyob rau hauv cov yeeb nkab thiab lub tog raj kheej. Qhov no provokes ib tug loj poob ntawm lub hwj chim thiab nce roj noj.

Yuav ua li cas yog tias lub catalytic converter raug kaw? Ua-nws-koj tus kheej cov cim thiab kev kuaj mob ntawm ib qho

Muaj peb txoj hauv kev los xyuas nws. Thawj yog qhov ua tau zoo tshaj plaws.

Qhov no yog qhov kev sim ntawm catalyst thaum nws dismantling. Nws txuas tau yooj yim heev. Rau dismantling, koj yuav tsum nqa ob lub thawv los yog qhib-kawg wrenches rau 13. Ntawm ib sab, peb kho lub ntsia liaj qhov rooj, thiab nyob rau lwm yam, peb tig lub txiv ntseej counterclockwise. Txawm li cas los xij, kev nyuaj yuav tshwm sim. Txij li thaum lub catalytic converter nyob hauv qab (tsis yog qhov chaw huv tshaj plaws hauv lub tsheb), nws cov fasteners tuaj yeem xeb yooj yim.

Thiab tus qauv WD 40 tsis pab ntawm no. Yog li ntawd, nyob rau hauv ib nrab ntawm cov rooj plaub, koj yuav tsum tuaj tos ib tug grinder thiab txiav tawm bolts. Tab sis tsis yog tag nrho. Txij li thaum lub converter yog ib feem ntawm qhov tso pa tawm, nws ua haujlwm ntawm qhov kub siab. Raws li, nws qhov chaw (ib qho mus los ntawm cov yeeb nkab tau txais, qhov thib ob - mus rau resonator) tsuas yog lo rau cov hlau nyob sib ze. Hauv qhov no, tsuas yog tshuab nrog rauj txuag. Tab sis qhov no tsis yog qhov kev daws teeb meem zoo tshaj plaws. Raws li peb tau hais ua ntej, los ntawm me ntsis tshuab, sab hauv yog yooj yim deformed. Txiav cov khoom seem nrog lub grinder kom tshem tawm cov catalyst kuj tsis yog ib qho kev xaiv. Yog li ntawd, nws hloov tawm tias tshem tawm cov khoom no mus rau sab nraud tsis yooj yim li. Zoo, yog hais tias tus catalyst tsis tau daig, nrog nws txoj kev ua tiav dismantling, peb ua tib zoo tshuaj xyuas nws rau blockage - ntawmmeshes yuav tsum yog los ntawm clearance.

thib ob

Txoj kev kuaj mob no yog ua yam tsis muaj kev cuam tshuam cov tshuab - cov catalyst tseem nyob hauv nws qhov chaw raug. Cov txheej txheem suav nrog ntsuas qhov siab hauv qhov system. Txhawm rau ua qhov no, lub ntsuas ntsuas siab tau muab ntsia rau hauv qhov chaw ntawm cov pa oxygen sensor (qee zaum yuav tsum muaj lub adapter) thiab kev nyeem ntawv yog ntsuas ntawm lub cav sib txawv.

Ntawm 2.5 txhiab, qib ib txwm yog 0.3 kgf / cm 3. Yog tias tus nqi tsawg dua li tus nqi tso cai, cov pa roj carbon monoxide tsis tuaj yeem tawm mus ib txwm. Vim li no, lub tsheb poob zog. Tsis tas li, kev kuaj mob tuaj yeem ua tiav siv lub tshuab ntsuas lub cev muaj zog (txoj kev thev naus laus zis tshaj plaws niaj hnub no). Lub siab sensor yog screwed rau hauv lub tog raj kheej nyob rau hauv qhov chaw ntawm lub tswm ciab. Tom qab ntawd, ntawm qhov sib txawv crankshaft speeds, lub waveform yog soj ntsuam. Lawm, tag nrho cov no yuav tsum muaj cov cuab yeej siv, yog li thawj txoj kev paub ntau dua rau peb cov tswv tsheb.

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Yog tias koj lub catalytic converter tau txhaws (peb tau tshuaj xyuas cov tsos mob ntawm kev ua haujlwm tsis zoo), nws yuav tsum tau hloov nrog ib qho tshiab.

Txawm li cas los xij, muaj teeb meem - tus nqi nruab nrab ntawm cov hloov pauv tshiab yog kwv yees li $ 100. Yog li ntawd, cov neeg tsav tsheb tsuas yog tshem nws tawm ntawm lub kaw lus los ntawm kev txhim kho cov nplaim taws lossis lub qhov hluav taws xob hauv daim ntawv ntawm cov yeeb nkab zoo tib yam hauv nws qhov chaw. Txawm li cas los xij, tom qab ua li no, cov catalyst yuav tsum raug tshem tawm ntawm ECU chav tsev (lub tsheb hlwb). Nws ntseeg tias qhov kev ua no yuav ua rau kom muaj zog thiablub tshuab acceleration los ntawm 5 feem pua (vim qhov cua zoo dua ntawm cov pa tso pa tawm).

Yog li, peb tau saib yog vim li cas cov catalyst tau txhaws, cov cim ntawm kev ua haujlwm tsis zoo thiab yuav daws li cas.