AdBlue

AdBlue^® he 32,5% aqueous wai urea solution i hana ʻia mai ka urea maʻemaʻe loea a me ka wai demineralized. Hiki i ka inoa o ka hopena ke lilo i AUS 32, kahi pōkole no ka Urea Aqueous Solution. He wai aniani moakaka ʻole ia me ka pilau amonia ʻala. ʻAʻohe waiwai ʻona ka hopena, ʻaʻohe ona hopena koʻikoʻi i ke kino o ke kanaka. ʻAʻole lapalapa ia a ʻaʻole i hoʻokaʻawale ʻia ma ke ʻano he mea weliweli no ka lawe ʻana.

AdBlue^® he NOx reductant i koi ʻia no ka hoʻohana ʻana o Selective Reduction (SCR) catalysts i nā kaʻa diesel. Hoʻokomo ʻia kēia hopena i loko o ka catalyst, kahi, ma hope o ka hoʻopili ʻana i nā kinoea wela, hoʻopau ʻia ka urea i loko o carbon dioxide (CO₂) amonia (NH₃).

wai, mahana

urea → CO₂ + 2NH₃

Hana ʻo Ammonia a me nā oxygen nitrogen (NO_X) i loaʻa i ka wā o ka puhi ʻana o ka wahie kakolina diesel. Ma ke ʻano he hopena kemika, hoʻokuʻu ʻia ka nitrogen harmless a me ka mahu wai mai nā kinoea hoʻoluhi. Kapa ʻia kēia kaʻina hana hōʻemi catalytic selective (SCR).

NO + NO₂ + 2NH₃ → 2n₂ + 3H₂O

No ka mea ʻo -11°C ka mahana crystallization mua, ma lalo o kēia mahana ua paʻa ka AdBlue additive. Ma hope o ka hoʻoheheʻe pinepine ʻana, hiki ke hoʻohana ʻia me ka ʻole o ka palena. ʻO ka nui o AdBlue ma 20 C he 1087 - 1093 kg / m3. ʻO ka Dosing o AdBlue, i mālama ʻia i loko o kahi pahu kaʻawale, e hana ʻia i loko o ke kaʻa e like me nā koi o ka mana. I ka hihia o ka pae Euro 4, ka nui o AdBlue i hoʻohui ʻia e pili ana i ka 3-4% o ka nui o ka wahie i pau, no ka pae hoʻokuʻu Euro 5 ua 5-7%. Hoʻolaha Blue^® hoʻemi i ka hoʻohana ʻana o ka diesel i kekahi mau hihia a hiki i ka 7%, no laila e hoʻoliʻiliʻi hapa ʻana i nā kumukūʻai kiʻekiʻe o ke kūʻai ʻana i nā kaʻa e kū i nā koina o EURO 4 a me EURO 5.