Lub caij ntuj no tsheb urea kua yuav khov? Yuav ua li cas khov? Koj puas xav ntxiv antifreeze qis kub urea?
Thaum lub caij ntuj no kub poob, ntau tus tswv tsheb, tshwj xeeb tshaj yog nyob rau sab qaum teb, yuav inevitably txhawj xeeb txog lawv cov urea tank khov, lawv yuav nug seb lub tsheb urea yuav khov, yuav ua li cas khov nws, seb puas yuav ntxiv tus tswv tsev qis qis. urea thiab lwm yam teeb meem, thiab qee tus tswv tsheb ncaj qha hloov cov tshuaj urea zoo tib yam nrog cov tshuaj urea ntawm -35 ° C, xav tias qhov no yooj yim, qhov tseeb, nws tsis yog. Nws tsis yog tsuas yog them nyiaj xwb tab sis kuj yooj yim rau kev puas tsuaj rau lub tsheb tom qab kev kho mob. Tam sim no cia peb nyiam qhov kev nkag siab yooj yim.
Vim li cas ntxiv urea tov?
Dab tsi yog qhov teeb meem hauv kev tsis ntxiv?
Lub npe hu ua lub tsheb urea tov, tseem hu ua diesel tso pa kho kua, hais txog urea tov nrog urea concentration ntawm 32.5% thiab cov kuab tshuaj ntawm ultra-ntshiab dej, thiab nws cov ntaub ntawv raw yog urea crystals thiab ultra-ntshiab dej. Nws tau nruab rau hauv lub tank urea, thaum cov yeeb nkab tso tawm tau pom tias muaj nitrogen oxide, lub urea tank cia li ejects lub tsheb urea tov, thiab ob REDOX tshwm sim nyob rau hauv lub SCR cov tshuaj tiv thaiv tank, generating tsis muaj kuab paug nitrogen thiab dej paug, txo emissions.
SCR system ua hauj lwm hauv paus ntsiab lus: Nrog rau qhov nrov ntawm lub teb chaws plaub, lub teb chaws tsib, thiab txawm tom qab lub teb chaws rau lub tsheb, automotive urea tuaj yeem hais tias yog ib qho tseem ceeb ntxiv rau SCR, thiab nws kuj yog ib qho tseem ceeb rau cov tsheb diesel xws li tsheb thauj khoom thiab tsheb npav. kom ua tau raws li lub teb chaws tsib thiab rau emission qauv.
Tsis ntxiv cov tshuaj urea rau lub sijhawm ntev, lossis siv cov dej ntshiab lossis dej kais hloov pauv, yuav ua rau muaj kev puas tsuaj loj rau cov urea nozzle thiab txawm tias tag nrho cov kev kho mob tom qab. Kom paub tias qhov hloov ntawm urea nozzle feem ntau yog ntau txhiab yuan, tag nrho cov system xav tau 30,000 txog 50,000 yuan.
-35 ℃ tsheb urea tov yog dab tsi?
Koj puas xav ntxiv qhov kub thiab txias urea tov?
Lub tsheb urea tshuaj tau teev tseg los ntawm lub teb chaws plaub lub teb chaws tsib emission qauv pib khov ntawm ib txwm kub hauv qab -11 ° C. Cov neeg tsim khoom siv additives (ethanol los yog ethylene glycol) kom txo tau lub freezing point ntawm automotive urea, thiaj li mus cuag lub lub hom phiaj ntawm anti-freezing. Txawm li cas los xij, ethanol nyob rau hauv cov additive yog flammable thiab explosive, thiab lub tsheb tso yeeb nkab yog kub, yog hais tias tus ethanol concentration yog siab dhau lawm, nws yuav ua rau puas ntsoog rau cov pa yeeb nkab. Nyob rau hauv qee qhov kub thiab txias, ethylene glycol yuav tsim cov kua qaub, uas yuav ua rau corrosion ntawm cov yeeb nkab tso tawm thiab ua rau cov pa tawm. Yog li ntawd, tsis tas yuav tsum tau siv cov tshuaj hu ua -35 ° C automotive urea tov, thiab qhov tseem ceeb tshaj, qhov -35 ° C automotive urea tov yog kwv yees li 40% kim tshaj li qhov qub ntawm lub khw.
Puas yog cov tshuaj urea khov hauv lub caij ntuj no?
Yuav ua li cas yog tias kuv txias?
Puas yog cov tshuaj urea khov hauv lub caij ntuj no? Yuav ua li cas yog tias kuv txias? Qhov tseeb, cov teeb meem no, cov tuam ntxhab tau xav txog ntev, feem ntau xav tau los tiv thaiv sab qaum teb ntawm lub tsheb SCR system tau nruab nrog urea tank thaw cua sov ua haujlwm, thaum lub cav dej kub txog 60 degrees, urea kua kub qis dua -5 degrees. Celsius, los ntawm lub cav twj tso kua mis mus rau lub urea tank engine coolant yuav qhib cov kev khiav, thiaj li yuav thaw lub urea kua crystallization nyob rau hauv lub urea tank.
Txij li thaum SCR xav tau lub cav tso cua kub kom ncav cuag ntau tshaj 200 ° C kom nkag mus rau hauv kev ua haujlwm, urea kua yuav tsis raug txau ntawm qhov kub thiab txias, thiaj li muab sijhawm txaus rau cov kua thawed crystallized urea.
Yog li ntawd, tsis tas yuav txhawj xeeb txog seb cov tshuaj urea yuav khov, thiab yuav ua li cas tom qab khov. Tsis tas li ntawd, txawm nyob rau thaj tsam txias tshaj plaws, tsis tas yuav ntxiv qhov hu ua low-temperature urea solution.
Published by: Wenrui Liang
Post lub sij hawm: Feb-20-2024
