Kudziwa njira yapadera ya urea

Vehicle urea ndipo nthawi zambiri amati urea waulimi amasiyana. Urea wagalimoto ndikuchepetsa kuipitsidwa kwa nayitrogeni ndi ma hydrogen opangidwa ndi injini ya dizilo, ndikuthandizira kuteteza chilengedwe. Ili ndi zofunikira zofananira, zomwe zimapangidwa ndi urea wapamwamba kwambiri komanso madzi a deionized. Chimodzi mwazofunikira kwambiri ndikuwongolera kuchuluka kwa zonyansa. Tinthu tating'onoting'ono, ayoni achitsulo, mchere ndi zonyansa zina mu urea ndizochuluka kwambiri, ndipo zovulaza zake ndizodziwikiratu. Urea wosayenerera akawonjezedwa, zimabweretsa kulephera kwa pambuyo pakukonza, komanso kubweretsa zoopsa zomwe sizingathetsedwe pakukonza pambuyo. Ndipo kwa makumi masauzande a yuan pambuyo pokonza, kapena kusankha mtundu wa urea womwe umalimbikitsidwa ndi wopanga.

Ndi makhalidwe otani?

Weichai wapadera urea yankho akukumana muyezo mayiko ISO22241-1, German muyezo DIN70070 ndi dziko muyezo GB29518, mboni khalidwe.

Kuvulaza kwa zinthu zabodza komanso zotsika: njira yothetsera urea yotsika siili yoyenera, chiyero sichikwanira, zonyansa zambiri mu urea, zosavuta kuzimitsa, kutsekereza mphuno ya urea, panthawiyi, mphuno ya urea ikhoza kukhala. kuchotsedwa, kutenthedwa ndi kuwiritsa mpaka kusungunuka. Komabe, kugwiritsidwa ntchito kwanthawi yayitali kwa urea wagalimoto komwe sikumayenderana ndi miyezo yoyendera bwino yomwe boma likunena kudzachepetsa kutembenuka kwa NOx, kuchepetsa magwiridwe antchito ndi moyo wa chothandizira, ndikuwononga kwambiri dongosolo la SCR, zomwe zimapangitsa kuti pakhale positi yosasinthika. -kulephera kukonza.

Zoyera kwambiri

Kuti mukwaniritse zofunikira zapamwamba kwambiri za urea, Weichai wapadera urea yankho ayenera kudutsa zosiyanasiyana kusefera ndi mwatsatanetsatane kachitidwe kusefera mu ndondomeko kupanga, ndi ma CD zipangizo ayenera kukhala fumbi. Mfundo yoyambira yogwirira ntchito ya SCR system: utsi umalowa mu chitoliro cha utsi kuchokera pa turbine ya charger. Pa nthawi yomweyo, ndi urea jekeseni wagawo anaika mu DPF, ndi m'malovu urea kukumana hydrolysis ndi pyrolysis anachita pansi pa zochita za kutentha utsi utsi mpweya, kupanga chofunika NH3, NH3 amachepetsa NOx kuti N2 pansi pa zochita za chothandizira. Mu SCR kuchepetsa dongosolo, ndende ya urea yankho ndi chimodzi mwa zinthu zofunika, koma kwambiri kapena otsika kwambiri ndende sangathe kusintha kutembenuka kwa mphamvu ya NOx, koma kuchititsa kutsetsereka kwa ammonia ndi mapangidwe sekondale woipitsa ammonia.

Kutembenuka kwakukulu

Ndi njira yapadera ya urea yokhala ndi ndende ya 32.5% monga kuchepetsa wothandizira; Monga kasinthidwe kachitidwe ka SCR pambuyo pa chithandizo, kumwa urea kumakhala pafupifupi 5% yamafuta. Tengani mphamvu ya 23Lde urea thanki mwachitsanzo, mtunda ukhoza kufika makilomita 1500-1800.

Urea onjezerani madzi: nthawi zambiri wina amafunsa ngati urea atha kuwonjezera madzi amchere, madzi owiritsa opanda kanthu ndi zinthu zina. Izi sizingatheke, pali zonyansa zambiri m'madzi apampopi, kuposa momwe timawonera. Calcium, magnesium, sodium ndi zinthu zina m'madzi apampopi ndi madzi amchere ndizosavuta kupanga zinthu zolimba, motero zimatsekereza mphuno ya urea, zomwe zimatsogolera ku zolakwika pambuyo pokonza. The madzi anawonjezera mu urea, akhoza kukhala madzi deionized. Mulingo wamadzimadzi a tanki ya urea uyenera kusungidwa pakati pa 30% ndi 80% ya voliyumu yonse ya tanki ya urea. Kusungirako urea: Mankhwala a urea akuyenera kusungidwa m’chidebe chotsekedwa pamalo ozizira, owuma, kutali ndi zotulutsa mphamvu za okosijeni. Mukadzaza, monga mwachindunji mu thanki ya urea kutaya urea splashing, ndikutulutsa kuipitsidwa kwa chilengedwe. Zida zodzaza akatswiri zimalimbikitsidwa.

Chidziwitso pakudzaza urea: Urea solution imawononga khungu. ngati khungu kapena maso awonjezedwa, sambani ndi madzi mwamsanga; ngati ululu ukupitirira, chonde pitani kuchipatala. Ngati mwamezedwa mosasamala, letsani kusanza, pitani kuchipatala mwamsanga