Ucwaningo mayelana nokwelashwa kokukhishwa kwenjini yedizili ngemva kokwelashwa lugxile ekususweni kwe-NOX kanye ne-PM. Futhi kuye kwavela izindlela eziningi zokuhlanza. Ubuchwepheshe bokuhlanza igesi yedizili buhlanganisa ikakhulukazi ukujikeleza kwegesi ye-exhaust (EGR), i-oxidation catalytic converter (DOC), i-diesel particulate filter (DPF), i-selective catalytic reduction system (SCR), kanye ne-ammonia escape trap (ASC).
1.EGR (Ukujikeleza kabusha kwegesi yokukhipha umoya)uhlelo lokujikeleza kabusha kwegesi yokukhipha ugesi, oluhlukanisa ingxenye yegesi yokukhipha ugesi enjinini yokushisa bese luyifaka ohlangothini lokungenisa ukuze kuqhunyiswe okwengeziwe, lungafeza umphumela wokucindezela ukukhiqizwa kwama-nitrogen oxides kanye nokuthuthukisa ukonga kukaphethiloli.
2. I-DOC (I-Diesel Oxidation Catalyst)ubuchwepheshe be-catalyst ye-diesel oxidation esebenzisa ama-catalyst aqukethe izinsimbi eziyigugu ukuze kuqhutshekwe ku-oxidize i-HC, i-CO, i-NO, kanye nezindleko eziguquguqukayo ezindaweni zezinhlayiya emsipheni wenjini, ngaleyo ndlela kuncishiswe inani le-HC, i-CO, kanye ne-PM.
3. I-DPF (Isihlungi se-Diesel Particulate)uhlobo lwesihlungi esifakwe ohlelweni lokukhipha umoya lwezinjini zedizili, olusetshenziswa kakhulu ukubamba izinto ezincane (PM) emkhunjini wokukhipha umoya.
4.SCR (Ukunciphisa Okukhethiwe Kwe-Catalytic)uhlelo luwubuchwepheshe obusebenzisa i-urea ukunciphisa ngokukhetha ama-nitrogen oxide (amagesi anobuthi) kugesi yokukhipha umoya abe yi-nitrogen namanzi (okungeyona ingozi).
5.ASC (Isihluthulelo se-Ammonia Slip)Njenge-catalyst yokuphuma kwe-ammonia, amanye amaloli e-National VI ngemuva kokwelashwa azoba nohlelo lwe-ASC, olufakwe ngemuva kwe-SCR futhi lunciphise ukuvuza kwe-ammonia (NH3) emkhunjini we-SCR ngemuva ngokusebenzisa i-catalytic oxidation.
6.POCiyi-oxidizer ye-catalytic yezinhlayiya. Umgomo osebenzayo ukuqoqa izinto ezincane bese uzishisa ngokushisa okuphezulu kwegesi yokukhipha umoya (250 ℃ -500 ℃) ukuze kufezwe umgomo wokunciphisa izinto ezincane. I-POC ivame ukusetshenziswa emalorini amancane. Ngaphezu kwalokho, i-POC ingavuselelwa ngenkuthalo, kuyilapho i-DPF idinga ukungenelela ngesandla.
Isikhathi sokuthunyelwe: Julayi-31-2024