Kafukufuku wokhudza utsi wa injini ya dizilo pambuyo pochiza utsi wa injini ya dizilo amayang'ana kwambiri kuchotsa NOX ndi PM. Ndipo njira zambiri zoyeretsera zatulukira. Ukadaulo woyeretsa utsi wa dizilo umaphatikizapo makamaka kubwerezabwereza kwa mpweya wotuluka (EGR), chosinthira chotenthetsera cha okosijeni (DOC), chosinthira tinthu tating'onoting'ono ta dizilo (DPF), njira yochepetsera chotsitsa cha catalytic (SCR), ndi msampha wothawa wa ammonia (ASC).
1.EGR (Kuzungulira kwa Mpweya Wotulutsa Utsi)Dongosolo lobwerezabwereza mpweya wotulutsa utsi, lomwe limalekanitsa gawo la mpweya wotulutsa utsi ndi injini yoyaka ndikuyiyika m'mbali mwa injini kuti iyambe kuyaka, lingathandize kuthetsa kupanga kwa nitrogen oxides ndikukweza kugwiritsa ntchito mafuta moyenera.
2.DOC (Chithandizo cha Kutulutsa Dizilo)Ndi ukadaulo wothandiza kukhetsa mpweya wa dizilo womwe umagwiritsa ntchito ma catalyst okhala ndi zitsulo zamtengo wapatali kuti apititse patsogolo kukhetsa mpweya wa HC, CO, NO, komanso kuwononga ndalama zosinthasintha pamalo a tinthu tating'onoting'ono mu utsi wa injini, potero kuchepetsa kuchuluka kwa HC, CO, ndi PM.
3.DPF (Fyuluta ya Dizilo)ndi mtundu wa fyuluta yomwe imayikidwa mu makina otulutsa utsi a injini za dizilo, yomwe imagwiritsidwa ntchito makamaka kugwira tinthu tating'onoting'ono (PM) mu utsi.
4.SCR (Kuchepetsa Chothandizira Chosankha)Dongosololi ndi ukadaulo womwe umagwiritsa ntchito urea kuti uchepetse ma nitrogen oxides (mpweya woopsa) mu mpweya wotulutsa utsi kukhala nayitrogeni ndi madzi (zomwe sizivulaza).
5.ASC (Chothandizira Kupopera cha Ammonia)Chothandizira kutuluka kwa ammonia, magalimoto ena a National VI pambuyo pa chithandizo adzakhala ndi dongosolo la ASC, lomwe limayikidwa kumapeto kwa SCR ndipo limachepetsa kutuluka kwa ammonia (NH3) mu utsi wa kumapeto kwa SCR kudzera mu okosijeni wothandiza.
6.POCndi tinthu tating'onoting'ono tothandizira kuwononga zinthu. Mfundo yogwira ntchito ndikutenga tinthu tating'onoting'ono ndikuwotcha kudzera mu kutentha kwakukulu kwa mpweya wotulutsa utsi (250 ℃ -500 ℃) kuti tikwaniritse cholinga chochepetsa tinthu tating'onoting'ono. POC imagwiritsidwa ntchito kwambiri pamagalimoto ang'onoang'ono. Kuphatikiza apo, POC imatha kubwezeretsedwanso mwachangu, pomwe DPF imafuna kuthandizidwa ndi manja.
Nthawi yotumizira: Julayi-31-2024