{"id":157,"date":"2014-05-01T10:33:41","date_gmt":"2014-05-01T08:33:41","guid":{"rendered":"http:\/\/www.mequipment.ro\/wordpress\/?p=157"},"modified":"2025-10-16T13:53:48","modified_gmt":"2025-10-16T11:53:48","slug":"uree-vs-oxizi-de-azot","status":"publish","type":"post","link":"https:\/\/mequipment.ro\/en\/uree-vs-oxizi-de-azot\/","title":{"rendered":"Uree vs. oxizi de azot"},"content":{"rendered":"

Standardul Euro 6<\/strong> face ca limitele emisiilor de noxe pentru camioane s\u0103 fie \u0219i mai stricte. Un maxim de 0.01 grame de particule de funingine \u0219i 0.4 grame de NOx per kWh \u2013 acestea sunt limitele cerute pentru noile camioane, \u00eencep\u00e2nd cu 1 ianuarie 2014; o provocare tehnologic\u0103 major\u0103 pentru produc\u0103torii de vehicule. Aceasta este situa\u021bia, deoarece combustia \u00een motoare depinde de o rela\u021bie fizic\u0103 neschimbat\u0103. <\/em><\/p>\n

\u00cen mod specific, reducerea emisiilor de oxizi de azot duce \u00een general la un consum mai ridicat de combustibil. Prin urmare, dezvoltarea de motoare compatibile cu standardul Euro 6 trebuie s\u0103 abordeze \u00een acela\u0219i timp \u0219i aspectul eficientiz\u0103rii consumului de carburant. A\u0219adar, noile motoare cu Euro 6 nu sunt doar prietenoase cu mediul, ci \u0219i eficiente din punctul de vedere al costurilor.<\/p>\n

\u00cen vreme ce sistemele EGR \u0219i SCR \u00ee\u0219i \u00eendeplinesc rolurile complementare, consumul de combustibil \u0219i de AdBlue (cunoscut \u0219i sub denumirea DEF – \u201cdiesel exhaust fluid\u201d) este redus. Ca urmare, EGR ajut\u0103 motorul s\u0103 emit\u0103 mai pu\u021bin NOx, iar asta \u00eenseamn\u0103 c\u0103 este nevoie de mai pu\u021bin AdBlue pentru reducerea oxizilor de azot din sistemul SCR. <\/p>\n

Pentru a sc\u0103dea consumul, injec\u021bia de combustibil \u00een sistemul de combustie a fost proiectat\u0103 astfel \u00eenc\u00e2t arderea s\u0103 fie optimizat\u0103, ob\u021bin\u00e2nd astfel o eficien\u021b\u0103 maxim\u0103 a carburantului \u0219i emisii minime de particule.
\nSuccesul cel mai important \u00een ceea ce prive\u0219te dezvoltarea motoarelor conforme cu norma Euro 6 a fost reprezentat de dep\u0103\u0219irea priorit\u0103\u021bilor contradictorii inerente \u00eentre reducerea emisiilor de NOx \u0219i eficientizarea consumului (\u0219i, prin urmare, reducerea emisiilor de CO2). <\/p>\n

Gazele de e\u015fapament produse de motor con\u0163in particule microscopice de funingine. Particulele de funingine (pulberi fine) sunt sfere de carbon de dimensiuni microscopice, cu un diametru de aprox. 0,05 micrometri, const\u00e2nd \u00een principal din carbon pur. Pe acest miez se depun diver\u0219i compu\u0219i de hidrocarbon, oxizi de metal \u0219i sulf.
\n<\/em><\/p>\n

AdBlue este o solu\u021bie pe baz\u0103 de uree (32,5%) \u0219i ap\u0103 de \u00eenalt\u0103 puritate. Prin tehnologia SCR, substan\u021ba AdBlue intervine \u00een reducerea, p\u00e2n\u0103 la neutralizare, a emisiilor nocive ale gazelor de e\u0219apament \u0219i \u00een reducerea emisiei de pulberi fine (particule de funingine) \u00een atmosfer\u0103, contribuind astfel la reducerea polu\u0103rii \u0219i p\u0103strarea unui mediu \u00eenconjur\u0103tor curat.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Standardul Euro 6 face ca limitele emisiilor de noxe pentru camioane s\u0103 fie \u0219i mai stricte. Un maxim de 0.01 grame de particule de funingine \u0219i 0.4 grame de NOx<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[32,39],"tags":[28,25,26,27],"class_list":["post-157","post","type-post","status-publish","format-standard","hentry","category-utilaje-de-constructii","category-engines-technologies","tag-euro6","tag-motoare","tag-nox","tag-pm"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"en","enabled_languages":["ro","en"],"languages":{"ro":{"title":true,"content":true,"excerpt":false},"en":{"title":false,"content":false,"excerpt":false}}},"yoast_head":"\nUree vs. oxizi de azot - M. 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