Diesels me SCR. E pilikia anei lākou?

Loaʻa i nā ʻenekini Diesel nā mea hou aʻe. ʻO kahi turbocharger, aftercooler a me kahi kānana particulate diesel ua maʻamau. I kēia manawa aia kahi kānana SCR.

ʻO BlueHDI, BlueTEC, SCR Blue Motion Technology kekahi mau hōʻailona i ʻike ʻia ma nā kaʻa diesel. Ua hōʻike ʻia ua lako nā kaʻa me ka ʻōnaehana SCR (Selective Catalytic Reduction), ʻo ia hoʻi. Loaʻa i kahi hoʻonohonoho kūikawā no ka wehe ʻana i nā nitrogen oxides mai nā kinoea exhaust, kahi i hoʻokomo ʻia ka catalyst i ka ammonia ma ke ʻano o ka wai urea solution (AdBlue). . Noho ka ʻōnaehana ma waho o ka ʻenekini, kūkulu ʻia kekahi hapa i loko o ke kino (ka mea hoʻokele uila, nā mea ʻike, tank, pump, AdBlue filling system, fluid supply lines to the nozzle) a ʻo kekahi hapa i loko o ka ʻōnaehana exhaust (fluid nozzle, catalytic module, nitrogen oxides). sensor). Hāʻawi ʻia nā ʻikepili mai ka ʻōnaehana i loko o ka ʻōnaehana diagnostic o ka kaʻa, e hiki ai i ka mea hoʻokele ke loaʻa ka ʻike e pili ana i ka pono e hoʻopiha hou i ka wai a me nā hemahema o ka ʻōnaehana SCR.

He maʻalahi ka hana o ka SCR. Hoʻokomo ka injector i ka hoʻonā urea i loko o ka ʻōnaehana exhaust ma mua o ka SCR catalyst. Ma lalo o ka mana o ka wela kiʻekiʻe, decompose ka wai i ka ammonia a me carbon dioxide. I loko o ka mea hoʻoheheʻe, hoʻopili ka ammonia me nā ʻokikene naikokene e hana i ka naikokene volatile a me ka mahu wai. Hoʻololi ʻia kekahi hapa o ka ammonia i hoʻohana ʻole ʻia i ka hopena i ka naikokene volatile a me ka mahu wai. ʻAʻole hiki ke hoʻohana pololei i ka ammonia ma muli o kona ʻona kiʻekiʻe a me kona ʻala hoʻopailua. No laila, ʻo ka hopena wai o ka urea, palekana a ʻaʻohe mea ʻala, kahi e unuhi ʻia ai ka amonia i loko o ka ʻōnaehana exhaust ma mua o ka hopena catalytic.

ʻO nā ʻōnaehana hou e hōʻemi ana i ka nitrogen oxides i nā kinoea hoʻopau i hoʻololi i nā ʻōnaehana EGR i hoʻohana mua ʻia, ʻaʻole kūpono loa no ka Euro 6 maʻamau i hoʻokomo ʻia ma 2014. Eia naʻe, ʻaʻole pono nā ʻenekini Euro 6 āpau i kahi ʻōnaehana SCR. He mea nui ia i nā ʻāpana kaʻa nui, ʻoi aku ka liʻiliʻi o ka mea i kapa ʻia ʻo "NOx trap" a i ʻole ka catalyst storage e lawa. Hoʻokomo ʻia ia i loko o ka ʻōnaehana exhaust a hopu i nā nitrogen oxides. Ke ʻike ka mea ʻike ua piha ka catalyst, hoʻouna ʻo ia i kahi hōʻailona i ka uila uila. ʻO ka mea hope, aʻo ia i nā injectors e hoʻonui i ka nui o ka wahie i nā manawa o kekahi mau kekona i mea e puhi ai i nā oxides paʻa. ʻO nā huahana hope he nitrogen a me carbon dioxide. No laila, hana like ka mea hoʻololi catalytic storage me kahi kānana particulate diesel, akā ʻaʻole maikaʻi e like me ka SCR catalytic converter, hiki ke hoʻoneʻe i ka 90% o nā ʻokikene nitrogen mai nā kinoea pau. Akā ʻaʻole pono ka "nox trap" i ka mālama hou a me ka hoʻohana ʻana iā AdBlue, hiki ke pilikia.

Paipai nā luna hoʻoponopono:

BMW 3 Series e90 (2005 – 2012)

E hoopauia nae ka inspectorate traffic?

ʻOi aku ka pōmaikaʻi no nā mea hoʻokele

He mea kūʻai loa ʻo AdBlue nui (PLN 2 no ka lita), akā ma ke kahua kinoea ke kumu kūʻai ʻo PLN 10-15 no ka lita. Eia nō naʻe, ʻoi aku ka maikaʻi o ke kumukūʻai ma mua o nā keʻena lawelawe ʻae ʻia, kahi āu e uku pinepine ai i 2-3 mau manawa hou aku. Pono e hoʻomanaʻo ʻia ua kūʻai mau ʻia ʻo AdBlu, ʻaʻole hiki ke nīnau i kahi waihona e pono ai ke lawe ʻia i loko o ka pahu. Pono e mālama ʻia ka wai ma lalo o nā kūlana kūpono a ʻaʻole no ka lōʻihi. Akā ʻaʻole pono kahi hale kūʻai, no ka mea he liʻiliʻi ka hoʻohana ʻana i kahi hopena urea. Ma kahi o 5% o ka hoʻohana ʻana i ka wahie, ʻo ia hoʻi no kahi kaʻa e hoʻopau ana i 8 l/100 km o ka wahie diesel, ma kahi o 0,4 l/100 km. Ma kahi mamao o 1000 km e pili ana i 4 lita, ʻo ia hoʻi ka hoʻohana ʻana o 40-60 zł.

He mea maʻalahi ka ʻike ʻana i ke kūʻai ʻana iā AdBlue ponoʻī e hoʻonui i ke kumukūʻai o ka hana ʻana i kahi kaʻa, ʻoiai hiki ke hoʻemi ʻia kēia mau mea e ka hoʻemi haʻahaʻa o ka wahie i nā mīkini me kahi SCR catalytic converter. Hōʻike pū ʻia nā pilikia mua, no ka mea me ka ʻole o AdBlue i ke kaʻa, pono ʻoe e ʻimi i kahi kūʻai aku no kahi hopena urea ma hope koke o ka leka e pili ana i ka pono e hoʻopiha. Ke pau ka wai, e hele ka ʻenekini i ke ʻano pilikia. Akā ʻo nā pilikia maoli, a me nā mea koʻikoʻi, aia ma kahi ʻē. Eia kekahi, hiki ke kiʻekiʻe loa nā kumukūʻai e pili ana i kahi ʻōnaehana SCR. Eia ka papa inoa o nā hewa make o ka ʻōnaehana SCR:

Haʻahaʻa Haʻahaʻa – Paʻu ʻo AdBlue ma -11 ºC. Ke holo nei ka ʻenekini, ʻo ka ʻōnaehana hoʻomehana e pili ana i ka pahu AdBlue e hōʻoiaʻiʻo ʻaʻole e maloʻo ka wai a ʻaʻohe pilikia. Akā i ka wā e hoʻomaka ai ke kaʻa ma hope o ka pō hau, maloʻo ʻo AdBlue. ʻAʻole hiki ke hoʻopili iā ia i kahi mīkini anu e holo ana a hiki i ka ʻōnaehana hoʻomehana i lawe iā AdBlue i kahi kūlana wai a ua hoʻoholo ka mea hoʻoponopono e hiki ke hoʻomaka ka dosing. ʻO ka hope, ua hoʻokomo ʻia ka solution urea, akā aia nō nā kristal urea i loko o ka pahu e hiki ai ke ālai i ka AdBlue injector a me nā laina pamu. Ke hana ʻia kēia, pau ka ʻenekini. ʻAʻole e hoʻi hou ke kūlana a hiki i ka pau ʻana o ka urea. Akā ʻaʻole hiki ke hoʻoheheʻe ʻia nā kristal urea ma mua o ka ʻole o ka crystalline, hiki iā lākou ke hōʻino i ka AdBlue injector a me ka pamu. ʻO kahi mea hoʻokomo AdBlue hou e kūʻai ana ma kahi o ka liʻiliʻi he mau haneli PLN, aʻo ke kumukūʻai hou (i hui pū ʻia me ka pahu) mai 1700 a i kekahi mau tausani PLN. Pono e hoʻohui ʻia ʻaʻole lawelawe nā haʻahaʻa haʻahaʻa iā AdBlue. Ke hoʻoheheʻe a hoʻoheheʻe ʻia ka wai. Ma hope o kekahi mau hoʻololi ʻana, ʻoi aku ka maikaʻi o ka hoʻololi ʻana me kahi mea hou.

Wela – ma nā mahana ma luna o 30 ºC, hoʻohālua ka urea i AdBlue a hoʻoheheʻe i loko o kahi mea ola i kapa ʻia he biuret. Hiki iā ʻoe ke honi i kahi ʻala maikaʻi ʻole o ka amonia kokoke i ka pahu AdBlue. Inā haʻahaʻa loa ka ʻike o ka urea, ʻaʻole hiki i ka SCR catalytic converter ke pane pololei, a inā ʻaʻole pane mai ke kaʻa diagnostic alarm, e hele ka ʻenekini i ke ʻano pilikia. ʻO kahi ala maʻalahi e hoʻomaʻalili i kāu pahu AdBlue ʻo ka ninini ʻana i ka wai anuanu ma luna.

ʻO nā hemahema o nā mea mīkini a me nā mea uila - inā hoʻohana pono ʻia, kakaʻikahi ka pōʻino i ka pamu a i ʻole ka hāʻule ʻole o ka AdBlue injector. Ma ka ʻaoʻao ʻē aʻe, hāʻule pinepine nā mea ʻike nitric oxide. ʻO ka mea pōʻino, ʻoi aku ka maikaʻi o nā sensor ma mua o nā injectors. Ua kūʻai lākou mai kahi mau haneli a kokoke i 2000 zł.

haumia - ʻAʻole ʻae ka ʻōnaehana hoʻolako AdBlue i nā mea ʻino, ʻoi aku ka momona. ʻO kahi liʻiliʻi liʻiliʻi o ia mea e hōʻino i ka hoʻokomo. ʻAʻole pono e hoʻohana ʻia nā funnels a me nā mea ʻē aʻe e pono ai no ka hoʻopiha ʻana i ka solution urea no kekahi kumu ʻē aʻe. ʻAʻole pono e hoʻoheheʻe ʻia ʻo AdBlue me ka wai, no ka mea hiki ke hōʻino i ka catalytic converter. ʻO AdBlue kahi hopena 32,5% o ka urea i ka wai, ʻaʻole pono e uhaki ʻia kēia lakio.

Ua hoʻokomo ʻia nā ʻōnaehana SCR ma nā kaʻa mai 2006, a ma nā kaʻa kaʻa mai 2012. ʻAʻohe mea e hōʻole i ka pono e hoʻohana iā lākou, no ka mea, ʻo ka hoʻopau ʻana i nā mea ʻino i nā kinoea hoʻopau he hana maikaʻi ia no mākou āpau. Akā i nā makahiki o ka hoʻohana ʻana, ua hana ʻo SCR i kāna mea kaulana loa, hoʻoulu i nā hale hana mea kūʻai aku a me nā mea hoʻohana huhū. He pilikia e like me ka kānana particulate, a hiki ke hōʻike i nā mea nona nā kaʻa i nā pilikia hopohopo a me nā lilo nui. ʻAʻole he mea kupanaha ka pane ʻana o ka mākeke ma ke ʻano like me nā kānana particulate. Aia nā papa hana e wehe i ka hoʻokomo ʻana o AdBlue a hoʻokomo i kahi emulator kūikawā e hōʻike ana i ka ʻōnaehana diagnostic o ke kaʻa e paʻa mau ana ka kānana a hana pono. I kēia hihia, kānalua loa ka ʻaoʻao pono o ia hana, akā ʻaʻole ia he mea kupanaha no nā mea hoʻokele i kolo hohonu ma lalo o ka ʻili o ka SCR a komo i loko o kā lākou ʻeke. ʻAʻohe kānalua ka ʻaoʻao kānāwai - ʻo ka wehe ʻana i ka kānana SCR ʻaʻole kānāwai, no ka mea, ua hōʻole ia i nā kūlana no ka ʻae ʻana o ke kaʻa. Eia naʻe, ʻaʻohe mea e hoʻāʻo e ʻike i kēlā ʻano hana, e like me ke ʻano o ka wehe ʻana i nā kānana particulate.