SCR (Selective Catalytic Reduction): Ntchito ndi Zopindulitsa

Selective catalytic reduction ndi njira yamankhwala yomwe imasintha ma nitrogen oxide kukhala nthunzi wamadzi ndi nayitrogeni. Pamagalimoto okhala ndi injini ya dizilo, dongosolo la SCR (selective catalytic reduction) lili pautsi ndipo limachepetsa kuipitsidwa molingana ndi zofunikira za Euro 6 standard.

🔎SCR system ndi chiyani?

dongosolo SCR, pofuna kuchepetsa kuchepetsa, komwe kumatchedwanso kusankha kothandizira kuchepetsa Mu French. Ndi teknoloji yomwe imachepetsa mpweyanayitrogeni oxides (NOx) magalimoto, magalimoto, komanso magalimoto.

NOx ndi mpweya wowonjezera kutentha. Amathandizira kwambiri kuipitsidwa kwa mlengalenga ndipo amabwera makamaka chifukwa cha kuyaka kwamafuta oyambira pansi monga mafuta, makamaka mafuta a dizilo.

Kuyambira pomwe idayamba Muyezo woteteza kuipitsidwa kwa Euro 6 Mu 2015, njira zatsopano zopangira mpweya wa nitrogen oxide zidakhazikitsidwa pamagalimoto. Dongosolo la SCR pang'onopang'ono linafalikira ndipo tsopano likugwiritsidwa ntchito m'magalimoto ambiri.

Kuyambira 2008, kuyambira pomwe muyezo wa Euro 5 udagwiritsidwa ntchito, magalimoto ali ndi dongosolo la SCR. Lero ndikusintha kwa magalimoto atsopano a dizilo omwe achoka pafakitale mzaka zaposachedwa.

Selective catalytic kuchepetsa ndi dongosolo lomwe limalola kutembenuka kwa NOx kukhala nayitrogeni ndi nthunzi wamadzi, zosakaniza zomwe zilibe vuto komanso zachilengedwe. Kuti tichite izi, dongosolo la SCR limapanga mankhwala mu utsi, ndime ya nitrogen oxides ndi asanatulutsidwe.

Dongosolo la SCR ndiye limalowa m'malo chothandizira classic, yomwe imagwiritsidwanso ntchito kutembenuza mpweya woipitsa ndi wapoizoni womwe uli m'mipweya yotulutsa mpweya kukhala zowononga zochepa kwambiri malinga ndi mtundu wina wamankhwala: redox kapena catalytic.

⚙️ Kodi SCR imagwira ntchito bwanji?

SCR ndi mtundu wa chothandizira. Selective catalytic reduction ndi njira yamankhwala yomwe imasintha NOx kukhala nayitrogeni ndi nthunzi wamadzi kuti muchepetse mpweya wa nitrogen oxide ndikuyipitsa chifukwa cha kuyaka mu injini ya kutentha.

Pachifukwa ichi, SCR imagwira ntchito chifukwaAdBlue, madzi omwe amabayidwa ndi dongosolo mu utsi. AdBlue imakhala ndi madzi osungunuka ndi urea. Kutentha kwa gasi wotulutsa mpweya kumasintha AdBlue kukhala ammonia, zomwe zimapanga makemikolo ofunikira kusintha ma nitrogen oxide kukhala nayitrogeni ndi nthunzi wamadzi.

Dongosolo la SCR limafunikira kukhazikitsa Tanki ya AdBlue... Tanki iyi idapangidwa kuti ikhale yamadzimadzi ndipo chifukwa chake ndiyosankha pagalimoto: imawonjezedwa ku tanki yamafuta. Itha kukhala pafupi ndi chomaliza, pamlingo wa injini kapena thunthu lagalimoto.

Monga AdBlue imadyedwa pang'onopang'ono ndi SCR, ndikofunikira kuwonjezera madzi nthawi ndi nthawi. Izi zitha kuchitika mu canister kapena ndi pampu ya AdBlue pamsonkhano.

Kuyambira 2019, magalimoto ena ali ndi makina osinthika a SCR. M'malo mwa chothandizira chimodzi, galimotoyo imakhala ndi imodzi. два : wina pafupi ndi injini, wina pansi. Izi zimathandiza kuti pakhale kuwongolera bwino kwa mpweya wa zinthu zowononga.

⚠️ Ndi zolephera ziti zomwe SCR ingakumane nazo?

Dongosolo la SCR, makamaka, likhoza kukhala ndi mitundu iwiri yolephera:

• Le kusowa kwa AdBlue ;
• Thechothandizira chotsekeka SCR.

AdBlue ili mu thanki yapadera, yomwe pamagalimoto aposachedwa nthawi zambiri imakhala pafupi ndi thanki yamafuta, yokhala ndi kapu pansi pa kapu yodzaza. Kugwiritsa ntchito kwa AdBlue kuli pafupifupi 3% kumwa dizilondipo nyali yochenjeza imabwera pa dashboard mukangotsala ndi makilomita 2400 kuti iume.

Ngati simukuwonjezera AdBlue, SCR idzasiya kugwira ntchito. Koma mozama, galimoto yanu idzakhala yosasunthika. Inu pachiswe sindingathe woyamba.

Vuto lina ndi dongosolo la SCR, kuyipitsa, likhudzana ndi magwiridwe antchito monga chothandizira wamba. Chifukwa cha zochita za mankhwala zomwe zimayambitsidwa ndi dongosolo, cyaniric acid imapangidwa, yomwe imatha kudziunjikira mu SCR. Kenako iyenera kuchotsedwa kuti ichotse utsi.

Ngati njira yanu yochepetsera yomwe mwasankhayo ili ndi kachilombo, mudzawona zizindikiro zotsatirazi:

• Mphamvu ya injini imatsika ;
• Injini ikukamidwa ;
• Kugwiritsa ntchito mafuta mopitirira muyeso.

Pankhaniyi, musadikire kuti dongosolo la SCR liyeretsedwe. Apo ayi, muyenera kusintha. Komabe, SCR ndiyokwera mtengo kwambiri.

Ndizo zonse, mukudziwa zonse za SCR! Monga momwe mwadziwira kale, dongosololi lafalikira m'galimoto pamagalimoto a dizilo kuchepetsa kuipitsa kwawo... Masiku ano wakhala chida chofunika kwambiri polimbana ndi nitrogen oxides, mpweya wokhala ndi wowonjezera kutentha.