AdBlue

AdBlue^® yog 32,5% aqueous urea tov ua los ntawm cov txheej txheem ntshiab urea thiab cov dej tsis muaj dej. Lub npe ntawm cov tshuaj kuj tseem tuaj yeem yog AUS 32, uas yog lub npe luv rau Urea Aqueous Solution. Nws yog xim tsis muaj pob tshab ua kua nrog tsw ntxhiab ntawm ammonia. Kev daws teeb meem tsis muaj tshuaj lom, tsis muaj kev cuam tshuam rau tib neeg lub cev. Nws tsis kub hnyiab thiab tsis cais raws li cov khoom phom sij rau kev thauj mus los.

AdBlue^® yog NOx reductant xav tau rau kev siv Selective Reduction (SCR) catalysts hauv cov tsheb diesel. Cov tshuaj no tau qhia rau hauv cov tshuaj tiv thaiv, qhov twg, tom qab txhaj tshuaj rau hauv cov pa roj cua kub, cov tshuaj urea uas tau muab pov tseg ua cov pa roj carbon dioxide (CO)₂ammonia (NH₃).

dej, sov

urea → COJ₂ + 2 NRH₃

Ammonia ces reacts nrog nitrogen oxides (NO_X) uas tshwm sim thaum lub sij hawm hlawv roj diesel. Raws li qhov tshwm sim ntawm cov tshuaj tiv thaiv kab mob, tsis muaj nitrogen thiab dej ua pa raug tso tawm los ntawm cov pa nkev. Cov txheej txheem no hu ua selective catalytic reduction (SCR).

Tsis yog + Tsis yog₂ + 2 NRH₃ N 2 NWJ₂ + 3 hli₂O

Txij li thaum pib crystallization kub yog -11 ° C, hauv qab no qhov kub thiab txias AdBlue additive solidifies. Tom qab rov qab defrosting, nws tuaj yeem siv yam tsis muaj kev txwv. Qhov ceev ntawm AdBlue ntawm 20 C yog 1087 - 1093 kg / m3. Dosing ntawm AdBlue, uas yog khaws cia nyob rau hauv ib lub tank cais, yuav siv sij hawm qhov chaw nyob rau hauv lub tsheb tag nrho cia li raws li qhov yuav tsum tau ntawm lub chaw tswj. Nyob rau hauv cov ntaub ntawv ntawm Euro 4 qib, tus nqi ntawm AdBlue ntxiv sib raug rau kwv yees li 3-4% ntawm cov roj noj, rau Euro 5 emission theem nws twb yog 5-7%. Ad Blue^® txo qis kev siv roj av hauv qee kis mus txog 7%, yog li ib nrab ua rau cov nqi siab dua ntawm kev yuav cov tsheb uas ua tau raws li qhov xav tau ntawm EURO 4 thiab EURO 5.