SCR Cleaning Tshuab Rau Cov Txheej Txheem Rail: Precision Restoration Of Aftertreatment Efficiency

CovSCR tshuab ntxuavyog lub hom phiaj kho kev daws teeb meem rauXaiv Catalytic Reductioncov kab ke cuam tshuam los ntawm crystalline deposit tsub zuj zuj thiab hydrocarbon fouling-cov xwm txheej uas ua rau muaj zogNOx conversion efficiencythiab ua rau kim cav derating. Kev siv cov tshuaj tswj cov kua dej thiab cov twj tso kua mis, cov cuab yeej siv lub cev tshem tawm cov tawv nqaij ammonium bisulfate thiab silicate -raws li cov hmoov tshauv los ntawm cov catalyst substrate yam tsis tas yuav tsum tau ua tiav kev tshem tawm ntawm lub tsheb ciav hlau tom qab kho. Tsim los rauCommon rail diesel cav, no active tu mus kom ze khaws cia downstreamO2 sensorsthiabExhaust kub sensorsthaum xa rov qab ntsuas qhov txo qis dua-feem ntau nyob rau hauv 15–20% ntawm OEM lub hauv paus- hauv ib lub voj voog 45 feeb.

CovBR-SCR-B02ua haujlwm ntawm 380V peb-theem fais fab, xa 14Kw los txhawb nqa tus nqi 10m³ / h ntws los ntawm 120L stainless hlau reservoir. Qhov no txhawbcyclic ntxuavntawm cov ntxaij lim dej txog li 45 ntiv tes hauv txoj kab uas hla, nrog kev tswj xyuas thermal tswj qhov kub ntawm 55-60℃dej- zoo rau kev rhuav tshem ammonium bisulfate deposits. CovPLC programminginterface ua rau cov neeg teb xov tooj los teeb tsa cov mem tes -width modulation parameters (0.1–3.0 ms) ncaj qha cuam tshuam rauECU{0}} tsavengine lub luag hauj lwm cycles. Dual-theem 5-micron absolute filtration tiv thaiv kom tsis txhob muaj kab mob rov qab thaum lub sijhawmthim rov qab-flow flushing, tiv thaiv ob qho tib si khoom siv thiab nqes havdiesel particulate limsubstrate.

Chav tsev no cuam tshuam nrog Euro VI thiab EPA- ua rawsExhaust aftertreatment architectures, validated tiv thaivCumminsISBe/ISB/QSB series thiabBosch/Delphicommon rail systems. Cov khoom siv adapter suav nrog (DN25–DN40 pneumatic ceev- txuas txuas) ua kom cov pa tawm - pov thawj kev koom ua ke nrogSCR catalystvaj tse thiabDPFcanisters tsis disassembledEGRkav dej. Daim ntawv thov teb txuas ntxiv musKab ntsigC15 cav nyob rau hauv hnyav- cov khoom thauj, qhov twgmem tes- rov qab ntxuavzoo tshem tawm silicate - raws li cov tshauv uas thermal regeneration tawm daig nyob rau hauv lubhoneycomb cab kuj. Tshwj xeeb adapters rau tej yamVolvothiabScaniaasymmetrical flanges muaj raws li kev xaiv OEM - cov khoom siv tshwj xeeb.

Deployment yuav tsum immobilizing lub cav thiab tso lubECUnyob rau hauv hom kev pab cuam kom deactivate roj xa tawm - tiv thaiv cov kab mob tsis raug thaum ntxuav. Txuas cov khoom siv thiab xa rov qab mus rauSCRdosing unit test ports (tsis yog roj tsheb ciav hlau) siv nrog 25 * 33 mm steel -braided negative-pressure hoses nrog 1-inch fast connectors, tsim kom muaj qhov kaw -loop system nrog cov lus qhia txog kev txwv lub sijhawm. Rau cov khw muag khoom nruab nrogBosch ESI [tronic]los yogDelphidiagnostics, lub tshuab muab pass-los ntawm hom rau ib txhij saib xyuas ntawmkub sensorsthiabNOxnyeem ntawv. Tom qab- ntxuav, ib qho yuav tsum tau tshem tawm cov dej deionized thiab huab cua sib xyaw ua ke- riam qhuav voj voog txuas ntxivEGR txias txiasthiaboxidation catalystkev pabcuam lub neej.

Backpressure los ntawm cloggedSCRcatalysts yuam covsiab - roj twj tso kua misoverwork, ua rau ntxov ntxovroj injectornozzle hnav thiabsiab limiting valvebypass- ua kom cov roj kub thiab degrading lubricity. Teem sijhawmntxuavtxhua 150,000 mais lossis raws li 2.5 psi qhov sib txawv siab nce tiv thaiv tsis ua haujlwm ntawm tus nqiO2 sensorsthiabExhaust kub sensors. Qhov no tsis yog - cov txheej txheem ntxeem tau khaws cov txheej txheem hlau zoo, ua kom ntseeg tauNCO conversiontseem nyob saum 90% rau emission ua raws thiab tsis txhob cav derating. Lub tshuab kuj muaj lwm txoj hauv kev ruaj ntseg raulim hloov, txo cov khib nyiab pov tseg thiab ua kom haum nrogELVremanufacturing cov lus qhia.

Q1: SCR lub tshuab ntxuav lub tshuab ua kom paub qhov txawv ntawm cov teeb meem roj thiab cov catalyst fouling li cas?
A: Nws yog cov cuab yeej kho mob, tsis yog cov cuab yeej kuaj mob. Kev ntxuav yog pibtom qabKev kuaj mob (Bosch KTS lossis Delphi DS) paub meej tias SCR catalyst yog qhov kev ua haujlwm tsis zoo.

Q2: Kev ntxuav puas puas rau hauv cov txheej txheem catalyst?
A: Tsis yog. Cov tshuaj ntxuav tes tsis huv thiab tswj lub siab lub hom phiaj thaiv lub cev (soot, tshauv) yam tsis tau yaj lossis abrading cov khoom muaj txiaj ntsig - hlau ntxhua khaub ncaws.

Q3: Dab tsi ECU rov pib txheej txheem yuav tsum tau ua tom qab- ntxuav?
A: Tsav tsheb los ntawm 15-20 feeb rov tsim dua lub voj voog (txoj kev loj) kom tso cai rau ECU kom rov ntsuas qhov sib txawv ntawm qhov sib txawv thiab rov pib dua lub txee thauj khoom.

Q4: Lub tshuab puas siv tau rau ob qho tib si ntawm - tsheb loj thiab tawm - cov khoom siv hauv kev?
A: Yog. Kev teeb tsa hauv paus npog feem ntau ntawm - daim ntawv thov kev loj; tawm -txoj kev (Caterpillar, Komatsu) yuav tsum tau xaiv qhov hnyav -lub luag haujlwm adapter teeb (Part #BR-ADP-OFF).

Q5: Lub tshuab lub neej ntev npaum li cas thiab qhov chaw muaj?
A: Nrog kev siv txhua hnub thiab kev kho dej kom zoo, lub twj tso kua mis sib dhos kav ntev li 8,000-10,000 teev ua haujlwm. Cov khoom siv coj los tso rau hauv Houston thiab Rotterdam cov chaw faib khoom rau tom ntej - hnub xa khoom.

Q6: Qhov no piv rau thermal regeneration tu li cas?
A: Tsis zoo li thermal hlawv-tawm, uas tuaj yeem yaj cov substrates lossis fuse cov hmoov tshauv rau hauv phab ntsa, lub tshuab no siv cov dej dynamics thiab cua pulses kom tshem tawm cov khib nyiab uas tsis muaj thermal stress, khaws cia substrate kev ncaj ncees nyob rau ntau lub voj voog.

 

Txhawm rau ua kom koj qhov kev yuav khoom tau yooj yim thiab yooj yim, peb muab ntau yam kev xaiv them nyiaj ruaj ntseg:

Peb nyob ntawm no los ua kom koj cov txheej txheem xaj kev txhawj xeeb-dawb - xaiv txoj kev them nyiaj uas ua haujlwm zoo tshaj rau koj!

 

 

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