Nws kuj tuaj yeem yog cov laj thawj no.

Hais txog kev kho mob tom qab ua tsis tiav ua ntej, feem ntau yog qhov tsis ua haujlwm ntawm lub cav diesel urea twj thiab lub nozzle, tab sis lub thawv SCR kuj yog ib qho tseem ceeb. Nws lub luag haujlwm yog los ua qhov chaw sib xyaw ua ke thiab tshuaj lom neeg cov kua urea nrog cov nitrogen oxides hauv cov pa tso pa. Tam sim no, SCR lub thawv rau cov tsheb thauj khoom hnyav ua ke nrog SCR catalytic converter thiab cav tso pa muffler nrog ib qho.

Cov khoom siv tag nrho yog cov hlau tsis muaj steel, SCR catalyst core thiab muffler pipeline yog nruab rau hauv, thiab qis qis ntawm stainless hlau phaj rau saum npoo yog nruab nrog cov khoom siv thermal rwb thaiv tsev. Qhov nruab nrab qhov kub thiab txias thaum ua haujlwm yog 200-250 degree . Lub flange lub ntsej muag interface yog lub inlet, thiab lwm lub teeb yeeb nkab interface yog lub qhov hluav taws xob. Lub catalytic converter yog nruab nrog kub sensor, nitrogen thiab oxygen sensor, thiab lwm yam.

Ib qho tsis ua hauj lwm ib qho: SCR lub thawv ntim cov yeeb nkab thiab lub thawv sib txuas tawg

Ua rau:

1, cov yeeb nkab tso tawm ntev dhau lawm thiab tsis muaj qhov hloov pauv tau yooj yim thiab kev txhawb nqa ruaj khov, ua rau SCR lub thawv cua nkag hauv qab tawg ntau dhau.

2, SCR lub thawv nws tus kheej vuam cov teeb meem zoo.

Kev ntsuas kev kho mob.

1, rov kho dua los yog hloov ntawm SCR lub thawv, lub raj xa hluav taws xob txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm

Kev txhaum 2: Cov suab nrov txawv txav hauv lub thawv SCR

Ua rau:

1. Sab hauv ntawm lub thawv SCR yog crystallized, thiab cov crystals poob tawm thiab yob thiab ntaus hauv.

2. Lub vuam sab hauv ntawm SCR lub thawv yog tawg, thiab lub suab txawv txav txawv ntawm cov siv lead ua, thiab muaj lub suab ntawm cov hlau tsoo hlau.

3. Cov cab kuj ntog thiab tawg, thiab hom kev ua tsis tiav no tshwm sim tsawg zaus.

Kev ntsuas kev kho mob:

Qhib lub SCR lub npov los xyuas, yog tias nws yog ib qho teeb meem crystallization, tshem tawm cov crystallization thiab ua tib zoo ntxuav nws nrog dej kub ntshiab kom txog thaum ntxuav tiav. Nws raug nquahu kom hloov lub rooj sib dhos yog tias qhov sib txuas welded tawg thiab cov cab kuj poob.

Qhov txhaum 3: SCR lub thawv muaju thaiv cov pa tawm, siab rov qab siab, siab tso cua sov, siv roj ntau, thiab lub zog tsis txaus

Ua rau:

1, Nozzle tsis ua hauj lwm, ntim loj txhaj tshuaj, urea noj yog super siab ua rau crystallization loj.

2, Cov roj lim tsis zoo thiab cua lim ua rau cov paug tawm ntawm impurities, impurities adsorption urea, lub sij hawm ntev tsub zuj zuj los ntawm crystallization.

3, Tsis zoo urea.

Kev ntsuas kev kho mob

1, xyuas seb cov urea puas tsim nyog urea, seb nws puas yog qhov hnav thiab thaiv los ntawm urea impurities rau lub nozzle, ua rau lub cev valve kaw tsis zoo los yog tsis kaw, ntxuav lossis hloov lub nozzle, ntxuav lossis hloov lub thawv SCR.

2, xyuas seb cov roj thiab cov cua lim puas tsim nyog, sau cov roj uas tsim nyog thiab hloov cov lim cua.

Kev txhaum plaub: SCR lub thawv yog thaiv los ntawm cov khib nyiab

Lus Cim: Qhov teeb meem no yuav ua rau lub tsheb tsis ua haujlwm ntawm qhov chaw. Tom qab SCR raug thaiv, tsis muaj cua ntws tawm ntawm cov yeeb nkab. Muaj qhov sib txawv ntawm qhov sib txawv ntawm cov cua ntawm lub tsheb tshiab lub idling tailpipe.

Ua rau:

1, Cov roj tsis zoo, impurities hauv cov roj.

2, Cov lim cua tsis zoo lossis kev saib xyuas tsis tu ncua ua rau muaj ntau yam tsis huv hauv cov cua nkag

Yam yuam kev tsib: Cov paj rwb muffler ntawm qhov kawg ntawm SCR lub thawv tawm los

Ua rau:

1. Lub vuam zoo ntawm lub phaj muffler yog qhov tsis zoo, thiab qhov vuam tsis ruaj khov, uas ua rau tawg ntawm qhov chaw nres nkoj vuam.

Kev ntsuas kev kho mob:

Hloov lub phaj muffler thiab welded kom ruaj khov lossis hloov SCR sib dhos