{"id":4804,"date":"2025-08-26T01:41:16","date_gmt":"2025-08-26T09:41:16","guid":{"rendered":"https:\/\/3waycatalyst.com\/?p=4804"},"modified":"2025-08-26T01:41:51","modified_gmt":"2025-08-26T09:41:51","slug":"difference-between-scr-and-ordinary-catalytic-converter-core","status":"publish","type":"post","link":"https:\/\/3waycatalyst.com\/bs\/difference-between-scr-and-ordinary-catalytic-converter-core\/","title":{"rendered":"Razlika izme\u0111u SCR-a i obi\u010dne jezgre kataliti\u010dkog konvertora"},"content":{"rendered":"<p>Moderna vozila se oslanjaju na napredne sisteme za kontrolu emisija kako bi smanjila \u0161tetne zaga\u0111iva\u010de u <strong>izduvni plinovi<\/strong>Dvije najva\u017enije tehnologije su <strong>Selektivna kataliti\u010dka redukcija (SCR)<\/strong> pretvara\u010d i <strong>obi\u010dni katalizator<\/strong>, \u010desto nazivan <strong><a href=\"https:\/\/3waycatalyst.com\/bs\/three-way-catalytic-converter-twc\/\">Trostruki katalizator (TWC)<\/a><\/strong>.<\/p>\n\n\n\n<p>Iako oba sistema imaju za cilj smanjenje \u0161tetnih emisija i pridr\u017eavanje strogih <strong>standardna emisija<\/strong>, zna\u010dajno se razlikuju po dizajnu, osnovnim materijalima i principima rada. Ovaj \u010dlanak detaljno obja\u0161njava ove razlike i za\u0161to je svaki sistem pogodan za odre\u0111ene tipove motora.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0160ta je obi\u010dni kataliti\u010dki konvertor (TWC)?<\/h2>\n\n\n\n<p>Jedan <strong>obi\u010dni katalizator<\/strong>\u2014 obi\u010dno <strong>trostruki katalizator<\/strong>\u2014je <strong>pasivan<\/strong> ure\u0111aj koji smanjuje tri glavna zaga\u0111iva\u010da iz motora na benzin <strong>motori sa unutra\u0161njim sagorijevanjem<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Uglji\u010dni monoksid (CO)<\/strong> \u2192 pretvoreno u <strong>ugljikov dioksid (CO\u2082)<\/strong><\/li>\n\n\n\n<li><strong>Ugljikovodici (HC)<\/strong> \u2192 oksidira u <strong>ugljikov dioksid i voda (H\u2082O)<\/strong><\/li>\n\n\n\n<li><strong>Oksidi du\u0161ika (NOx)<\/strong> \u2192 svedeno na <strong>du\u0161ik (N\u2082)<\/strong> i <strong>kisik (O\u2082)<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kako funkcioni\u0161e<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Upotreba <strong>plemeniti metali<\/strong> kao \u0161to <strong>platina, paladij i rodij<\/strong> kao <strong>katalizator<\/strong>.<\/li>\n\n\n\n<li>Djeluje putem <strong>reakcije oksidacije i redukcije<\/strong> direktno na sa\u0107astu podlogu unutar jezgra.<\/li>\n\n\n\n<li>Ne zahtijeva vanjsko ubrizgavanje hemikalija - u potpunosti se oslanja na <strong>vru\u0107i izduvni gasovi<\/strong> i <strong>povr\u0161ina katalizatora<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Aplikacije<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prvenstveno se koristi u <strong>vozila na benzin<\/strong>.<\/li>\n\n\n\n<li>Osigurava uskla\u0111enost sa <strong>Zakon o \u010distom zraku<\/strong> i globalno <strong>zahtjevi za emisije<\/strong>.<\/li>\n\n\n\n<li>Dobro funkcionira za motore gdje <strong>CO, HC i NOx<\/strong> svi su prisutni u zna\u010dajnim koli\u010dinama.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/3waycatalyst.com\/bs\/the-essential-guide-to-three-way-catalytic-converters\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"635\" src=\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/07\/Guide-to-Three-Way-Catalytic-Converters.jpg\" alt=\"Osnovni vodi\u010d za trostruke kataliti\u010dke konvertore\" class=\"wp-image-1807\" title=\"\" srcset=\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/07\/Guide-to-Three-Way-Catalytic-Converters.jpg 1024w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/07\/Guide-to-Three-Way-Catalytic-Converters-300x186.jpg 300w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/07\/Guide-to-Three-Way-Catalytic-Converters-768x476.jpg 768w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/07\/Guide-to-Three-Way-Catalytic-Converters-600x372.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/3waycatalyst.com\/bs\/the-essential-guide-to-three-way-catalytic-converters\/\">Osnovni vodi\u010d za trostruke kataliti\u010dke konvertore<\/a><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u0160ta je SCR (selektivna kataliti\u010dka redukcija) konvertor?<\/h2>\n\n\n\n<p>The <strong>SCR katalizator<\/strong> je <strong>aktivni sistem<\/strong> prvenstveno dizajniran da smanji <strong>du\u0161ikovi oksidi (NOx)<\/strong>, koji su posebno bogati <strong>izduvni gasovi dizel motora<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kako funkcioni\u0161e<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prije nego \u0161to plinovi u\u0111u u jezgro SCR-a, a <strong>oni vra\u0107aju<\/strong> kao \u0161to <strong>Te\u010dnost za izduvne gasove dizel motora (DEF)<\/strong> or <strong>urea<\/strong> ubrizgava se u izduvni tok.<\/li>\n\n\n\n<li>Unutar SCR katalizatora, ovaj redukciono sredstvo reaguje sa <strong>NOx<\/strong> proizvesti bezopasne <strong>du\u0161ik (N\u2082)<\/strong> i <strong>vodena para (H\u2082O)<\/strong>.<\/li>\n\n\n\n<li>Proces zahtijeva preciznu kontrolu <strong>protok amonijaka<\/strong>, temperatura izduvnih gasova i <strong>distribucija plina<\/strong> kako bi se osigurala efikasnost.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Materijali za kataliti\u010dku jezgru<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Za razliku od TWC-a na bazi plemenitih metala, SCR jezgra \u010desto koriste <strong>oksidi osnovnih metala<\/strong> (vanadij, molibden, volfram) ili <strong>zeoliti<\/strong>.<\/li>\n\n\n\n<li><strong>Zeolitni katalizatori<\/strong> podnose vi\u0161e temperature i bolje se odupiru koroziji povezanoj sa sumporom nego osnovni metali.<\/li>\n\n\n\n<li><strong>Titanijum oksid<\/strong> i <strong>cerijum<\/strong> Tako\u0111er se koriste kao potporni elementi za pobolj\u0161anje stabilnosti.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Aplikacije<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Neophodno u <strong>dizel vozila<\/strong> i industrijskih motora.<\/li>\n\n\n\n<li>Sposoban za smanjenje <strong>Emisije NOx<\/strong> za preko 90%.<\/li>\n\n\n\n<li>\u010cesto upareno sa <strong>filteri za dizel \u010destice (DPF)<\/strong> za potpunu kontrolu emisija.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/3waycatalyst.com\/bs\/selective-catalytic-reduction-scr-system-explained\/\"><img decoding=\"async\" width=\"1024\" height=\"635\" src=\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/08\/SCR.jpg\" alt=\"SCR (selektivna kataliti\u010dka redukcija) pretvara\u010d\" class=\"wp-image-4819\" title=\"\" srcset=\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/08\/SCR.jpg 1024w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/08\/SCR-300x186.jpg 300w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/08\/SCR-768x476.jpg 768w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/08\/SCR-18x12.jpg 18w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/08\/SCR-600x372.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">SCR sistemi aktivno ubrizgavaju te\u010dnost za izduvne gasove dizel motora (DEF) u izduvne gasove, koja hemijski reaguje sa azotnim oksidima (NOx) i formira bezopasni azot i vodu.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Klju\u010dne razlike izme\u0111u SCR-a i obi\u010dnih kataliti\u010dkih konvertora<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Funkcija<\/th><th>Obi\u010dni kataliti\u010dki konvertor (TWC)<\/th><th>SCR kataliti\u010dki konvertor<\/th><\/tr><\/thead><tbody><tr><td><strong>Funkcija<\/strong><\/td><td>Istovremeno smanjuje CO, HC i NOx<\/td><td>Posebno cilja na NOx<\/td><\/tr><tr><td><strong>Proces<\/strong><\/td><td>Pasivni sistem; oslanja se na vru\u0107inu <strong>izduvni plinovi<\/strong> i plemenitih metala<\/td><td>Aktivni sistem; zahtijeva injekciju <strong>urea\/DEF<\/strong><\/td><\/tr><tr><td><strong>Kori\u0161teni katalizatori<\/strong><\/td><td>Plemeniti metali: <strong>platina, paladij, rodij<\/strong><\/td><td>Osnovni metali, <strong>zeoliti<\/strong>, vanadijum, cerijum, titanijum oksid<\/td><\/tr><tr><td><strong>Aplikacije<\/strong><\/td><td>Uglavnom <strong>benzinski motori<\/strong><\/td><td>Primarno <strong>dizel motori<\/strong><\/td><\/tr><tr><td><strong>Efikasnost<\/strong><\/td><td>Dobro sveukupno smanjenje zaga\u0111iva\u010da<\/td><td>Izuzetno visoka efikasnost za NOx (90%+)<\/td><\/tr><tr><td><strong>Odr\u017eavanje<\/strong><\/td><td>Nisko, ali osjetljivo na olovno gorivo, proma\u0161aje paljenja ili za\u010depljenje<\/td><td>Vi\u0161a - zahtijeva <strong>Dopunjavanje DEF-a<\/strong>, upravljanje katalizatorom i pode\u0161avanje<\/td><\/tr><tr><td><strong>Plasman<\/strong><\/td><td>Blizu motora u <strong>ispu\u0161ni sistem<\/strong><\/td><td>Dalje niz auspuh, nakon ta\u010dke ubrizgavanja DEF-a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Izazovi sa svakim sistemom<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Obi\u010dni kataliti\u010dki konvertor<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mo\u017ee biti <strong>o\u0161te\u0107en<\/strong> zbog preskakanja paljenja motora ili kontaminacije.<\/li>\n\n\n\n<li>Efikasnost se smanjuje tokom vremena zbog za\u010depljenja sa\u0107aste strukture.<\/li>\n\n\n\n<li>Ranjivo na <strong>kra\u0111a katalizatora<\/strong> zbog <strong>vrijedni plemeniti metali<\/strong> unutra.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">SCR kataliti\u010dki konvertor<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Osjetljivo na <strong>otrovi<\/strong> poput sumpora, fosfora ili te\u0161kih metala u izduvnim gasovima.<\/li>\n\n\n\n<li><strong>Ispu\u0161tanje amonijaka<\/strong> mo\u017ee se desiti ako ubrizgavanje redukcionog sredstva nije pravilno pode\u0161eno.<\/li>\n\n\n\n<li>Zahtijeva redovno odr\u017eavanje, dopunjavanje DEF-a i ponekad regeneraciju katalizatora.<\/li>\n\n\n\n<li><strong>Katalizatori od baznih metala<\/strong> mo\u017ee nedostajati izdr\u017eljivost na ekstremnim temperaturama u pore\u0111enju sa sistemima na bazi zeolita.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Za\u0161to proizvo\u0111a\u010di automobila koriste oba sistema<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vozila na benzin<\/strong> oslanjati se na <strong>trostruki katalizatori<\/strong> kao <strong>najbolji katalizator<\/strong> za smanjenje \u0161irokog spektra zaga\u0111iva\u010da.<\/li>\n\n\n\n<li><strong>Dizelska vozila<\/strong> usvojiti <strong>SCR tehnologija<\/strong> ispuniti stroge <strong>Zahtjevi za emisije NOx<\/strong>, budu\u0107i da obi\u010dni konvertori ne mogu efikasno smanjiti NOx iz dizela.<\/li>\n\n\n\n<li>U mnogim modernim dizel sistemima, SCR se kombinuje sa <strong>DPF filteri<\/strong> a ponekad i <strong>oksidacijski katalizator<\/strong> kako bi se stvorilo kompletno vi\u0161estepeno rje\u0161enje za kontrolu emisija.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Zaklju\u010dak<\/h2>\n\n\n\n<p>The <strong>Razlika izme\u0111u SCR-a i obi\u010dne jezgre kataliti\u010dkog konvertora<\/strong> svodi se na funkciju, dizajn i primjenu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>obi\u010dni katalizator<\/strong> (TWC) je <strong>pasivan<\/strong> sistem koji koristi <strong>plemeniti metali<\/strong> pretvoriti <strong>CO, HC i NOx<\/strong> u <strong>manje \u0161tetnih tvari<\/strong>.<\/li>\n\n\n\n<li>The <strong>SCR sistem<\/strong> je <strong>aktivna tehnologija<\/strong>, posebno ciljaju\u0107i <strong>NOx<\/strong> kori\u0161tenjem redukcijskog sredstva kao \u0161to je <strong>urea\/DEF<\/strong> u kombinaciji sa <strong>zeolit<\/strong> or <strong>katalizatori na bazi vanadija<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Oba sistema su nezamjenjiva u modernom <strong>automobilski<\/strong> tehnologiju, osiguravaju\u0107i da vozila ispunjavaju stroge <strong>standardna emisija<\/strong> istovremeno \u0161tite\u0107i okolinu od \u0161tetnih <strong>izduvni plinovi<\/strong>.<\/p>\n\n\n\n<p>Spremni za po\u010detak? Istra\u017eite <a href=\"\/bs\/contact\/\">Trostruki katalizator sada<\/a> i napravite prvi korak ka \u010distijoj vo\u017enji i boljim performansama motora!<\/p>","protected":false},"excerpt":{"rendered":"<p>Nau\u010dite klju\u010dne razlike izme\u0111u SCR-a i obi\u010dnih kataliti\u010dkih konvertora, njihove funkcije, procese, katalizatore i primjenu u benzinskim i dizel motorima.<\/p>","protected":false},"author":1,"featured_media":4812,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowgdPcCw:productID":"","footnotes":""},"categories":[98],"tags":[1036,1037,498,32,102,1033,1034,1035,1038,26],"class_list":["post-4804","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","tag-catalytic-converter-difference","tag-diesel-emissions","tag-emission-standards","tag-exhaust-system","tag-nox-reduction","tag-ordinary-catalytic-converter","tag-scr-catalytic-converter","tag-scr-vs-twc","tag-selective-catalytic-reduction","tag-three-way-catalytic-converter"],"_links":{"self":[{"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/posts\/4804","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/comments?post=4804"}],"version-history":[{"count":0,"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/posts\/4804\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/media\/4812"}],"wp:attachment":[{"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/media?parent=4804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/categories?post=4804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3waycatalyst.com\/bs\/wp-json\/wp\/v2\/tags?post=4804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}