Imoto yasebusika urea liquid izoba yiqhwa? Kuthiwani ngokubanda? Ingabe ufuna ukwengeza i-antifreeze izinga lokushisa eliphansi i-urea?
Lapho nje izinga lokushisa lehla ebusika, abanikazi bezimoto abaningi, ikakhulukazi enyakatho, bazokhathazeka nakanjani mayelana nokuqalwa kwethangi labo le-urea, bazobuza ukuthi i-urea yemoto izoba yiqhwa, ifakwe kanjani iqhwa, noma ukwengeza umninikhaya izinga lokushisa eliphansi. i-urea nezinye izinkinga, futhi abanye abanikazi bezimoto bashintsha ngokuqondile isisombululo se-urea evamile ngesisombululo se-urea -35 ° C, becabanga ukuthi lokhu kulula, empeleni, akunjalo. Ayigcini nje ngokubiza imali kodwa iphinde ilimaze kalula uhlelo lokwelashwa kwemoto. Manje ake sandise umqondo ovamile oyisisekelo.
Kungani ungeza isixazululo se-urea?
Yini embi ngokungangezi?
Okubizwa nge-car urea solution, eyaziwa nangokuthi uketshezi lokukhipha udizili, kubhekiselwa esixazululweni se-urea esine-urea exutshwe ne-urea engama-32.5% kanye ne-solvent yamanzi ahlanzekile kakhulu, futhi izinto zayo zokusetshenziswa amakristalu e-urea namanzi ahlanzekile kakhulu. Ifakwa ethangini le-urea, lapho ipayipi lokukhipha umoya litholakala line-nitrogen oxide, ithangi le-urea likhipha ngokuzenzakalelayo isisombululo se-urea yemoto, futhi ukusabela okubili kwe-REDOX kwenzeka ku-SCR reaction tank, okukhiqiza i-nitrogen engangcolisi kanye nokukhishwa kwamanzi, ukunciphisa ukukhishwa kwegesi.
Isimiso sokusebenza sohlelo lwe-SCR: Ngokuduma kwezimoto zikazwelonke ezine, zezwe ezinhlanu, ngisho nakamuva zikazwelonke eziyisithupha, i-urea yezimoto kungathiwa iyisengezo esibalulekile se-SCR, futhi ingumkhiqizo obalulekile ezimotweni zikadizili ezifana namaloli namabhasi. ukuhlangabezana namazinga kazwelonke amahlanu kanye nayisithupha.
Ukungangezi isixazululo se-urea isikhathi eside, noma ukusebenzisa amanzi ahlanzekile noma amanzi kampompi esikhundleni salokho, kuzodala umonakalo omkhulu kumbhobho we-urea ngisho nakulo lonke uhlelo lwangemva kokwelashwa. Ukwazi ukuthi ukushintshwa kwenozi ye-urea kuvame ukuba izinkulungwane zamayuan, lonke uhlelo ludinga ama-yuan angama-30,000 kuye kwangama-50,000.
Iyini isixazululo se-urea yemoto -35℃?
Ingabe ufuna ukwengeza isisombululo se-urea yezinga lokushisa eliphansi?
Isixazululo se-urea yemoto esishiwo amazwe amane kazwelonke izindinganiso zokukhipha umoya ezinhlanu ziqala ukuba yiqhwa ezingeni lokushisa elivamile elingaphansi kuka -11 ° C. Abakhiqizi ngabanye basebenzisa izithasiselo (i-ethanol noma i-ethylene glycol) ukunciphisa indawo ebandayo ye-urea yezimoto, ukuze kuzuzwe inhloso yokunqanda ukuqandisa. Kodwa-ke, i-ethanol esesithasiselweni iyavutha futhi iqhume, futhi ipayipi yokukhipha imoto isezingeni lokushisa eliphezulu, uma ukuhlushwa kwe-ethanol kuphezulu kakhulu, kuzodala umonakalo kumbhobho wokuqeda. Ngaphansi kwezimo ezithile zokushisa, i-ethylene glycol izokhiqiza izinto ze-asidi, ezizobangela ukugqwala kwepayipi yokukhipha futhi kubangele ukuvuza. Ngakho-ke, asikho isidingo sokusebenzisa lokho okubizwa ngokuthi -35 ° C isixazululo se-urea yezimoto, futhi okubaluleke kakhulu, isisombululo se-urea yezimoto -35 ° C sibiza cishe ngama-40% kunejwayelekile emakethe.
Ingabe isixazululo se-urea siba yiqhwa ebusika?
Kuthiwani uma ngigodola?
Ingabe isixazululo se-urea siba yiqhwa ebusika? Kuthiwani uma ngigodola? Eqinisweni, lezi zinkinga, abakhiqizi sekuyisikhathi eside becatshangelwa, ngokuvamile badinga i-antifreeze inguqulo esenyakatho yesistimu ye-SCR yemoto ifakwe urea tank ncibilikisa umsebenzi wokushisa, lapho izinga lokushisa lamanzi enjini lifinyelela kuma-degrees angu-60, izinga lokushisa le-urea lingaphansi kuka -5 degrees. I-Celsius, isuka empompini yenjini ukuya esipholiseni senjini ye-urea izovula ukugeleza kwegazi, ukuze incibilikise i-urea liquid crystallization ethangini le-urea.
Njengoba i-SCR idinga izinga lokushisa le-exhaust yenjini ukuze ifinyelele ngaphezu kuka-200 ° C ukuze ingene emsebenzini, uketshezi lwe-urea ngeke lufuthwe ekushiseni okuphansi, ukuze kunikezwe isikhathi esanele soketshezi lwe-urea oluncibilikisiwe.
Ngakho-ke, asikho isidingo sokukhathazeka ngokuthi isisombululo se-urea sizoba yiqhwa, nokuthi ungayenza kanjani ngemva kokuqandisa. Ngaphezu kwalokho, ngisho nasezifundeni ezibanda kakhulu, asikho isidingo sokwengeza okuthiwa isisombululo se-urea esisezingeni eliphansi.
Ishicilelwe ngu:Wenrui Liang
Isikhathi sokuthumela: Feb-20-2024
