Hlavn\u00ed c\u00edl \u2013 a\u0165 u\u017e jde o maxim\u00e1ln\u00ed v\u00fdkon, p\u0159\u00edsn\u00e9 spln\u011bn\u00ed emisn\u00edch p\u0159edpis\u016f nebo rovnov\u00e1hu mezi ob\u011bma \u2013 z\u00e1sadn\u011b ur\u010duje po\u017eadavky na v\u00fdb\u011br katalyz\u00e1toru. Nap\u0159\u00edklad vozidlo ur\u010den\u00e9 pouze pro z\u00e1vody se m\u016f\u017ee katalyz\u00e1toru zcela vzd\u00e1t nebo pou\u017e\u00edt minim\u00e1ln\u00ed jednotku s vysok\u00fdm pr\u016ftokem, zat\u00edmco vozidlo s povolen\u00edm pro provoz na pouli\u010dn\u00ed komunikaci v Kalifornii by vy\u017eadovalo katalyz\u00e1tor spl\u0148uj\u00edc\u00ed normy CARB se specifick\u00fdmi hodnocen\u00edmi \u00fa\u010dinnosti.<\/p>\n\n\n\n
2. Specifikace motoru a v\u00fdfukov\u00e9ho syst\u00e9mu<\/h2>\n\n\n\n
Pro spr\u00e1vn\u00e9 dimenzov\u00e1n\u00ed a mont\u00e1\u017e katalyz\u00e1toru je z\u00e1sadn\u00ed podrobn\u00e1 znalost specifikac\u00ed motoru a v\u00fdfukov\u00e9ho syst\u00e9mu. Tyto parametry p\u0159\u00edmo ovliv\u0148uj\u00ed objem a teplotu v\u00fdfukov\u00fdch plyn\u016f, co\u017e n\u00e1sledn\u011b ur\u010duje po\u017eadovanou kapacitu a tepelnou odolnost katalyz\u00e1toru.<\/p>\n\n\n\n
Mezi kl\u00ed\u010dov\u00e9 parametry motoru pat\u0159\u00ed:<\/p>\n\n\n\n
- \n
- Zdvihov\u00fd objem a odhadovan\u00fd v\u00fdkon:<\/strong> V\u011bt\u0161\u00ed objemy motor\u016f a vy\u0161\u0161\u00ed v\u00fdkony v kon\u00edch generuj\u00ed v\u011bt\u0161\u00ed objem v\u00fdfukov\u00fdch plyn\u016f, co\u017e vy\u017eaduje v\u011bt\u0161\u00ed katalyz\u00e1tory, kter\u00e9 zvl\u00e1daj\u00ed zv\u00fd\u0161en\u00fd pr\u016ftok. 5<\/a>Obecn\u00e9 pravidlo pro pr\u016fm\u011br v\u00fdfukov\u00e9ho potrub\u00ed je p\u0159ibli\u017en\u011b 1 palec na ka\u017ed\u00fdch 100 ko\u0148sk\u00fdch sil. 5<\/a>U motor\u016f s vysok\u00fdm v\u00fdkonem a nucen\u00fdm p\u0159epl\u0148ov\u00e1n\u00edm se m\u016f\u017ee tov\u00e1rn\u00ed katalyz\u00e1tor st\u00e1t v\u00fdznamn\u00fdm \u00fazk\u00fdm hrdlem, kter\u00e9 vytv\u00e1\u0159\u00ed nadm\u011brn\u00fd protitlak ve v\u00fdfukov\u00fdch plynech a sni\u017euje v\u00fdkon. 5<\/a>.<\/li>\n\n\n\n
- Typ paliva:<\/strong> Benz\u00ednov\u00e9 motory obvykle vyu\u017e\u00edvaj\u00ed t\u0159\u00edcestn\u00e9 katalyz\u00e1tory (TWC), kter\u00e9 vykon\u00e1vaj\u00ed sou\u010dasn\u011b oxida\u010dn\u00ed i reduk\u010dn\u00ed funkce, \u010dasto se dv\u011bma substr\u00e1ty pro ka\u017ed\u00fd proces. 1<\/a>Vzn\u011btov\u00e9 motory na druhou stranu b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed dvoucestn\u00e9 katalyz\u00e1tory ur\u010den\u00e9 prim\u00e1rn\u011b pro oxidaci oxidu uhelnat\u00e9ho (CO), uhlovod\u00edk\u016f (HC) a pevn\u00fdch \u010d\u00e1stic (PM), proto\u017ee jejich motory s vysok\u00fdm obsahem NOx...x<\/em>\u200bEmise vy\u017eaduj\u00ed dal\u0161\u00ed techniky, jako je recirkulace v\u00fdfukov\u00fdch plyn\u016f (EGR) a syst\u00e9my selektivn\u00ed katalytick\u00e9 redukce (SCR) 1<\/a>.<\/li>\n\n\n\n
- Nucen\u00e1 indukce:<\/strong> Motory vybaven\u00e9 turbodmychadly nebo kompresory produkuj\u00ed v\u00fdrazn\u011b vy\u0161\u0161\u00ed teploty a pr\u016ftoky v\u00fdfukov\u00fdch plyn\u016f. To vy\u017eaduje katalyz\u00e1tory se zv\u00fd\u0161enou tepelnou odolnost\u00ed a vy\u0161\u0161\u00ed pr\u016ftokovou kapacitou, aby se zabr\u00e1nilo z\u00fa\u017een\u00ed a zajistilo se optim\u00e1ln\u00ed ot\u00e1\u010dky turbodmychadla. 6<\/a>Pokud je katalyz\u00e1tor zablokovan\u00fd nebo omezen\u00fd, \u00fa\u010dinnost turbodmychadla bude v\u00e1\u017en\u011b omezena. 6<\/a>.<\/li>\n\n\n\n
- Pr\u016fm\u011br st\u00e1vaj\u00edc\u00edho v\u00fdfukov\u00e9ho potrub\u00ed:<\/strong> Pr\u016fm\u011br vstupu a v\u00fdstupu katalyz\u00e1toru by m\u011bl ide\u00e1ln\u011b odpov\u00eddat st\u00e1vaj\u00edc\u00edmu pr\u016fm\u011bru v\u00fdfukov\u00e9ho potrub\u00ed, aby se zabr\u00e1nilo omezen\u00edm proud\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f, co\u017e m\u016f\u017ee negativn\u011b ovlivnit v\u00fdkon motoru. 5<\/a>Zat\u00edmco sn\u00ed\u017een\u00ed v\u00fdfukov\u00fdch omezen\u00ed obecn\u011b zlep\u0161uje v\u00fdkon a spot\u0159ebu paliva, p\u0159\u00edli\u0161 velk\u00e9 zv\u011bt\u0161en\u00ed pr\u016fm\u011bru v\u00fdfukov\u00e9ho potrub\u00ed m\u016f\u017ee v\u00e9st k nadm\u011brn\u00e9mu proplachov\u00e1n\u00ed, co\u017e m\u016f\u017ee v\u00e9st ke sn\u00ed\u017een\u00ed v\u00fdkonu motoru a spot\u0159eby paliva. 6<\/a>Pro optim\u00e1ln\u00ed provoz motoru je \u010dasto nutn\u00fd ur\u010dit\u00fd stupe\u0148 protitlaku. 6<\/a>.<\/li>\n\n\n\n
- Dostupn\u00fd fyzick\u00fd prostor pro instalaci:<\/strong> Fyzick\u00e9 rozm\u011bry katalyz\u00e1toru se mus\u00ed vej\u00edt do dostupn\u00e9ho prostoru v podvozku nebo motorov\u00e9m prostoru vozidla. To je obzvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9 u katalyz\u00e1tor\u016f s \u00fazk\u00fdm v\u00fdfukov\u00fdm potrub\u00edm, kter\u00e9 jsou um\u00edst\u011bny v bl\u00edzkosti v\u00fdfukov\u00e9ho potrub\u00ed pro dosa\u017een\u00ed rychl\u00e9ho zhasnut\u00ed, ale jsou tak\u00e9 vystaveny zv\u00fd\u0161en\u00e9 vibra\u010dn\u00ed energii z motoru. 25<\/a>Pro del\u0161\u00ed \u017eivotnost mohou n\u011bkter\u00e9 instalace preferovat mont\u00e1\u017e m\u011bni\u010de d\u00e1le od motoru, aby se zm\u00edrnilo nadm\u011brn\u00e9 vystaven\u00ed teplu, i kdy\u017e to m\u016f\u017ee zpozdit zhasnut\u00ed sv\u011btla. 25<\/a>Celkov\u00e1 hmotnost vozidla (GVW) je tak\u00e9 v\u00fdznamn\u00fdm faktorem p\u0159i ur\u010dov\u00e1n\u00ed velikosti katalyz\u00e1toru, n\u011bkdy dokonce v\u00edce ne\u017e objem motoru nebo po\u010det v\u00e1lc\u016f. 5<\/a>.<\/li>\n<\/ul>\n\n\n\n
3. Emisn\u00ed normy a soulad s p\u0159edpisy<\/h2>\n\n\n\n
Dodr\u017eov\u00e1n\u00ed specifick\u00fdch emisn\u00edch p\u0159edpis\u016f je ned\u00edlnou sou\u010d\u00e1st\u00ed v\u00fdb\u011bru katalyz\u00e1toru a p\u0159\u00edmo ovliv\u0148uje po\u017eadovanou \u00fa\u010dinnost katalyz\u00e1toru, typ substr\u00e1tu a mno\u017estv\u00ed drah\u00fdch kov\u016f. Glob\u00e1ln\u00ed emisn\u00ed normy se neust\u00e1le zp\u0159\u00eds\u0148uj\u00ed, co\u017e zvy\u0161uje popt\u00e1vku po pokro\u010dilej\u0161\u00edch katalytick\u00fdch technologi\u00edch. 15<\/a>.<\/p>\n\n\n\n
Mezi kl\u00ed\u010dov\u00e9 regula\u010dn\u00ed r\u00e1mce pat\u0159\u00ed:<\/p>\n\n\n\n
- \n
- Spojen\u00e9 st\u00e1ty (EPA a CARB):<\/strong> Agentura pro ochranu \u017eivotn\u00edho prost\u0159ed\u00ed (EPA) stanov\u00ed n\u00e1rodn\u00ed normy a reguluje emise, v\u010detn\u011b instalace a provozu katalyz\u00e1tor\u016f. 11<\/a>Agentura EPA rovn\u011b\u017e definuje n\u00e1rodn\u00ed standardy kvality ovzdu\u0161\u00ed (NAAQS) pro zne\u010di\u0161\u0165uj\u00edc\u00ed l\u00e1tky, jako je oxid uhelnat\u00fd, oxid dusi\u010dit\u00fd, oxid si\u0159i\u010dit\u00fd, pevn\u00e9 \u010d\u00e1stice, uhlovod\u00edky a fotochemick\u00e9 oxidanty. 11<\/a>V prosinci 2021 vydala EPA nov\u00e9 normy pro sklen\u00edkov\u00e9 plyny pro osobn\u00ed automobily a lehk\u00e9 n\u00e1kladn\u00ed automobily, kter\u00e9 plat\u00ed pro modelov\u00fd rok 2023. 12<\/a>Kalifornie prost\u0159ednictv\u00edm Kalifornsk\u00e9 rady pro ovzdu\u0161\u00ed (CARB) z\u00edskala v\u00fdjimku pro stanoven\u00ed je\u0161t\u011b p\u0159\u00edsn\u011bj\u0161\u00edch emisn\u00edch norem, kter\u00e9 mohou p\u0159ijmout i ostatn\u00ed st\u00e1ty. 14<\/a>Dodatky k z\u00e1konu o \u010dist\u00e9m ovzdu\u0161\u00ed z roku 1990 definovaly dv\u011b \u00farovn\u011b emisn\u00edch norem pro lehk\u00e1 u\u017eitkov\u00e1 vozidla: \u00farove\u0148 I (postupn\u011b zaveden\u00e1 v letech 1994\u20131997) a \u00farove\u0148 II (postupn\u011b zaveden\u00e1 v letech 2004\u20132009), p\u0159i\u010dem\u017e \u00farove\u0148 II zahrnuje podskupiny (BIN 1\u201310), kde ni\u017e\u0161\u00ed \u010d\u00edsla ozna\u010duj\u00ed \u010dist\u0161\u00ed vozidla. 14<\/a>P\u0159edpisy \u00farovn\u011b II rovn\u011b\u017e zavedly omezen\u00ed obsahu s\u00edry v benzinu a motorov\u00e9 naft\u011b, proto\u017ee s\u00edra m\u016f\u017ee naru\u0161ovat pokro\u010dil\u00e9 syst\u00e9my \u010di\u0161t\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f. 14<\/a>.<\/li>\n\n\n\n
- Evropsk\u00e1 unie (euronormy):<\/strong> EU m\u00e1 sv\u00e9 vlastn\u00ed p\u0159\u00edsn\u00e9 normy pro v\u00fdrobu katalyz\u00e1tor\u016f, kter\u00e9 se zam\u011b\u0159uj\u00ed na \u00fa\u010dinnost a bezpe\u010dnost \u017eivotn\u00edho prost\u0159ed\u00ed. 11<\/a>V\u00fdrobci mus\u00ed z\u00edskat schv\u00e1len\u00ed na z\u00e1klad\u011b faktor\u016f, jako je materi\u00e1l, katalytick\u00e1 aktivita, rozm\u011bry, tepeln\u00e1 ochrana a slo\u017een\u00ed materi\u00e1lu. 11<\/a>Prvn\u00ed celoevropsk\u00e1 norma Euro 1, zaveden\u00e1 v roce 1992, na\u0159izovala katalyz\u00e1tory v nov\u00fdch automobilech a pou\u017e\u00edv\u00e1n\u00ed bezolovnat\u00e9ho benzinu. 13<\/a>Nejnov\u011bj\u0161\u00ed norma Euro 6, zaveden\u00e1 v z\u00e1\u0159\u00ed 2014, m\u00e1 n\u011bkolik verz\u00ed, p\u0159i\u010dem\u017e Euro 6d se stala povinnou v lednu 2021. 13<\/a>Normy Euro 6 vy\u017eaduj\u00ed, aby dieselov\u00e9 vozy emitovaly maxim\u00e1ln\u011b 0,08 g NOx\/km.x<\/em>zat\u00edmco u benz\u00ednov\u00fdch aut by emise nem\u011bly p\u0159ekro\u010dit 0,06 g\/km 13<\/a>V\u00fdvoj norem Euro vedl k v\u00fdznamn\u00e9mu sn\u00ed\u017een\u00ed emis\u00ed oxidu uhelnat\u00e9ho, uhlovod\u00edk\u016f, oxid\u016f dus\u00edku a pevn\u00fdch \u010d\u00e1stic. 13<\/a>EU rovn\u011b\u017e stanovila pr\u016fm\u011brn\u00e9 c\u00edle pro emise CO22 pro nov\u00e9 osobn\u00ed automobily, a to od roku 2021 na 95 gram\u016f na kilometr. 12<\/a>.<\/li>\n\n\n\n
- \u010c\u00ednsk\u00e9 emisn\u00ed normy:<\/strong> \u010c\u00edna rychle zavedla p\u0159\u00edsn\u011bj\u0161\u00ed emisn\u00ed normy. Od 1. ledna 2018 musela v\u0161echna nov\u00e1 vozidla spl\u0148ovat normu China 5 (obdoba Euro 5). Od 1. ledna 2021 byla vy\u017eadov\u00e1na norma China 6a (obdoba Euro 6) a od 1. \u010dervence 2023 se stala povinnou norma China 6b (p\u0159\u00edsn\u011bj\u0161\u00ed ne\u017e Euro 6). 12<\/a>.<\/li>\n<\/ul>\n\n\n\n
Z\u00e1konn\u00fd po\u017eadavek na katalyz\u00e1tor v USA znamen\u00e1, \u017ee jeho odstran\u011bn\u00ed m\u016f\u017ee vozidlo u\u010dinit nezp\u016fsobil\u00fdm k provozu. 21<\/a>Proto je v\u00fdb\u011br konvertoru, kter\u00fd spl\u0148uje specifick\u00e9 normy zam\u00fd\u0161len\u00e9 provozn\u00ed oblasti projektu, z\u00e1sadn\u00ed. Zp\u0159\u00edsn\u011bn\u00ed glob\u00e1ln\u00edch emisn\u00edch norem, zejm\u00e9na pro NOxx<\/em>a \u010d\u00e1stice, je hlavn\u00edm faktorem popt\u00e1vky po pokro\u010dil\u00fdch katalytick\u00fdch technologi\u00edch a neust\u00e1l\u00fdch inovac\u00ed v konstrukci katalyz\u00e1tor\u016f 15<\/a>.<\/p>\n\n\n\n
4. Technologie katalyz\u00e1tor\u016f a krit\u00e9ria v\u00fdb\u011bru<\/h2>\n\n\n\n
V\u00fdb\u011br katalyz\u00e1tor<\/a> zahrnuje hlubok\u00e9 pochopen\u00ed z\u00e1kladn\u00edch technologi\u00ed, v\u010detn\u011b typ\u016f katalyz\u00e1tor\u016f, materi\u00e1l\u016f substr\u00e1t\u016f, hustot \u010dl\u00e1nk\u016f a obsahu drah\u00fdch kov\u016f. Tyto technick\u00e9 specifikace mus\u00ed p\u0159esn\u011b odpov\u00eddat c\u00edl\u016fm projektu, charakteristik\u00e1m motoru a po\u017eadavk\u016fm na spln\u011bn\u00ed emisn\u00edch p\u0159edpis\u016f.<\/p>\n\n\n\n
Typy katalyz\u00e1tor\u016f:<\/strong><\/p>\n\n\n\n
- \n
- Dvoucestn\u00e9 katalyz\u00e1tory:<\/strong> Tyto konvertory, pou\u017e\u00edvan\u00e9 prim\u00e1rn\u011b ve vzn\u011btov\u00fdch motorech, jsou ur\u010deny pro oxida\u010dn\u00ed reakce, p\u0159em\u011b\u0148uj\u00ed oxid uhelnat\u00fd (CO) na oxid uhli\u010dit\u00fd (CO22\u200b) a nesp\u00e1len\u00e9 uhlovod\u00edky (HC) na CO22\u200b a vodu (H22\u200bO). Hraj\u00ed tak\u00e9 roli p\u0159i sni\u017eov\u00e1n\u00ed mno\u017estv\u00ed pevn\u00fdch \u010d\u00e1stic (PM). 1<\/a>.<\/li>\n\n\n\n
- Trojcestn\u00e9 katalyz\u00e1tory<\/a> (TWC):<\/strong>\u00a0TWC, pou\u017e\u00edvan\u00e9 p\u0159ev\u00e1\u017en\u011b v benz\u00ednov\u00fdch motorech, jsou schopny sou\u010dasn\u011b prov\u00e1d\u011bt oxida\u010dn\u00ed i reduk\u010dn\u00ed reakce. P\u0159em\u011b\u0148uj\u00ed CO a HC na CO22 a H22O a redukuj\u00ed oxidy dus\u00edku (NOx)x<\/em>\u200b) na dus\u00edk (N22\u200b) a kysl\u00edk (O22\u200b)\u00a01<\/a>T\u00e9to dvoj\u00ed funkce je dosa\u017eeno p\u0159esnou regulac\u00ed pom\u011bru vzduchu a paliva a pou\u017eit\u00edm specifick\u00fdch drah\u00fdch kov\u016f.\u00a01<\/a>.<\/li>\n<\/ul>\n\n\n\n
![\"Mazda-8-v\u011btve-t\u0159\u00edcestn\u00fd-katalyz\u00e1tor\"](\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2025\/07\/Mazda-8-Branch-Three-Way-Catalytic-Converter-1-1024x696.jpg\" "\\"\\"")
<\/a>Mazda-8-v\u011btve-t\u0159\u00edcestn\u00fd-katalyz\u00e1tor<\/figcaption><\/figure>\n\n\n\n Materi\u00e1ly substr\u00e1tu:<\/strong><\/p>\n\n\n\n
Substr\u00e1t poskytuje struktur\u00e1ln\u00ed oporu pro katalytick\u00fd n\u00e1t\u011br a drah\u00e9 kovy. Pou\u017e\u00edvaj\u00ed se dva prim\u00e1rn\u00ed materi\u00e1ly:<\/p>\n\n\n\n
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- Keramika (kordierit):<\/strong> Historicky p\u0159evl\u00e1daj\u00edc\u00ed jsou keramick\u00e9 substr\u00e1ty cenov\u011b dostupn\u00e9 a nab\u00edzej\u00ed dobrou tepelnou stabilitu. Obvykle se jedn\u00e1 o vo\u0161tinov\u00e9 struktury, kter\u00e9 maximalizuj\u00ed povrch pro reakce. 4<\/a>Mohou v\u0161ak b\u00fdt k\u0159ehk\u00e9 a n\u00e1chyln\u00e9 k fyzick\u00e9mu po\u0161kozen\u00ed nebo tepeln\u00e9mu \u0161oku. Keramick\u00e9 substr\u00e1ty upevn\u011bn\u00e9 se standardn\u00edmi intumescentn\u00edmi roho\u017eemi vydr\u017e\u00ed n\u00e1ro\u010dn\u00e9 podm\u00ednky vibrac\u00ed za horka. 34<\/a>.<\/li>\n\n\n\n
- Metalick\u00e1 (nerezov\u00e1 f\u00f3lie):<\/strong> Kovov\u00e9 substr\u00e1ty, \u010dasto vyroben\u00e9 z nerezov\u00e9 f\u00f3lie, nab\u00edzej\u00ed ve srovn\u00e1n\u00ed s keramick\u00fdmi substr\u00e1ty stejn\u00e9 velikosti vynikaj\u00edc\u00ed odolnost, vy\u0161\u0161\u00ed tepelnou vodivost a ni\u017e\u0161\u00ed protitlak d\u00edky sv\u00e9 v\u011bt\u0161\u00ed otev\u0159en\u00e9 \u010deln\u00ed plo\u0161e. 19<\/a>Jsou odoln\u011bj\u0161\u00ed v\u016f\u010di fyzik\u00e1ln\u00edm n\u00e1raz\u016fm a tepeln\u00fdm \u0161ok\u016fm, d\u00edky \u010demu\u017e jsou vhodn\u00e9 pro vysoce v\u00fdkonn\u00e9 nebo \u00fazk\u00e9 aplikace. Spole\u010dnost Nippon Steel vyvinula \u201esubstr\u00e1t s \u03b1 filmem\u201c se speci\u00e1ln\u00edm oxidov\u00fdm filmem na povrchu nerezov\u00e9 oceli, kter\u00fd poskytuje vynikaj\u00edc\u00ed odolnost proti kysel\u00e9 korozi, co\u017e je v\u00fdhodn\u00e9 v syst\u00e9mech SCR. 17<\/a>.<\/li>\n<\/ul>\n\n\n\n
Hustota bun\u011bk (CPSI \u2013 bu\u0148ky na \u010dtvere\u010dn\u00ed palec):<\/strong><\/p>\n\n\n\n
Hustota bun\u011bk se vztahuje k po\u010dtu pr\u016ftokov\u00fdch kan\u00e1l\u016f na \u010dtvere\u010dn\u00ed palec pr\u016f\u0159ezu substr\u00e1tu. Tento parametr v\u00fdznamn\u011b ovliv\u0148uje jak katalytickou \u00fa\u010dinnost, tak i odpor proud\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f:<\/p>\n\n\n\n
- \n
- Vy\u0161\u0161\u00ed hustota bun\u011bk (nap\u0159. 600\u20131200 cpsi):<\/strong> Zv\u00fd\u0161en\u00e1 hustota bun\u011bk vede k vy\u0161\u0161\u00ed geometrick\u00e9 povrchov\u00e9 plo\u0161e (GSA), co\u017e poskytuje v\u00edce aktivn\u00edch m\u00edst pro katalytick\u00e9 reakce a t\u00edm zlep\u0161uje \u00fa\u010dinnost. 1<\/a>To je obzvl\u00e1\u0161t\u011b v\u00fdhodn\u00e9 pro \u00fazce propojen\u00e9 katalyz\u00e1tory, kter\u00e9 zlep\u0161uj\u00ed chov\u00e1n\u00ed p\u0159i studen\u00e9m startu zkr\u00e1cen\u00edm doby pot\u0159ebn\u00e9 k dosa\u017een\u00ed provozn\u00ed teploty. 16<\/a>Vy\u0161\u0161\u00ed tlak v cpsi v\u0161ak tak\u00e9 zvy\u0161uje odpor proud\u011bn\u00ed (RfF<\/em>a protitlak 7<\/a>I kdy\u017e zv\u00fd\u0161en\u00ed hustoty bun\u011bk m\u016f\u017ee v d\u016fsledku zv\u00fd\u0161en\u00e9 tepeln\u00e9 hmoty sn\u00ed\u017eit \u00fa\u010dinnost konverze sv\u011btla, lze to zm\u00edrnit zv\u00fd\u0161en\u00edm mno\u017estv\u00ed drah\u00fdch kov\u016f. 19<\/a>.<\/li>\n\n\n\n
- Ni\u017e\u0161\u00ed hustota bun\u011bk (nap\u0159. 200\u2013400 cpsi):<\/strong> Ni\u017e\u0161\u00ed hustota bun\u011bk sni\u017euje protitlak a omezen\u00ed na jednotku plochy, co\u017e je \u010din\u00ed vhodn\u00fdmi pro v\u00fdkonn\u00e9 aplikace, kde je z\u00e1sadn\u00ed maximalizace pr\u016ftoku v\u00fdfukov\u00fdch plyn\u016f. 9<\/a>\u010casto se tak\u00e9 pou\u017e\u00edvaj\u00ed pro dodate\u010dnou mont\u00e1\u017e dieselov\u00fdch motor\u016f, aby se minimalizovalo riziko ucp\u00e1n\u00ed sazemi. 7<\/a>\u201eOfsetov\u00fd substr\u00e1t\u201c s hustotou bun\u011bk 400 cpsi (OS-400) vykazuje o 40 % vy\u0161\u0161\u00ed tlakovou ztr\u00e1tu ne\u017e konven\u010dn\u00ed kovov\u00fd substr\u00e1t se stejnou hustotou bun\u011bk (Metal-400). 17<\/a>Ofsetov\u00e9 substr\u00e1ty v\u0161ak vykazuj\u00ed lep\u0161\u00ed hou\u017eevnatost v prostorov\u00e9 rychlosti (SV) a men\u0161\u00ed zhor\u0161en\u00ed katalytick\u00e9 reakce se zvy\u0161uj\u00edc\u00edm se pr\u016ftokem plynu. 17<\/a>.<\/li>\n<\/ul>\n\n\n\n
Historick\u00fd v\u00fdvoj konstrukce katalyz\u00e1tor\u016f ukazuje zv\u00fd\u0161en\u00ed hustoty bun\u011bk z 200 cpsi v roce 1974 na sou\u010dasn\u00fdch 1200 cpsi, doprov\u00e1zen\u00e9 v\u00fdrazn\u00fdm sn\u00ed\u017een\u00edm tlou\u0161\u0165ky st\u011bny z 12 mil na p\u0159ibli\u017en\u011b 2 mil. 16<\/a>Tento v\u00fdvoj siln\u00fdch, ultratenkost\u011bnn\u00fdch substr\u00e1t\u016f dramaticky zv\u00fd\u0161il \u00fa\u010dinnost katalyz\u00e1toru sn\u00ed\u017een\u00edm tepeln\u00e9 hmotnosti, co\u017e umo\u017enilo substr\u00e1tu rychleji dos\u00e1hnout teploty pro zhasnut\u00ed sv\u011btla. 16<\/a>.<\/p>\n\n\n\n
Vkl\u00e1d\u00e1n\u00ed drah\u00fdch kov\u016f a n\u00e1t\u011bry:<\/strong><\/p>\n\n\n\n
- \n
- Drah\u00e9 kovy (PGM):<\/strong> Aktivn\u00edmi katalytick\u00fdmi materi\u00e1ly jsou obvykle kovy platinov\u00e9 skupiny (PGM), jako je palladium (Pd), platina (Pt) a rhodium (Rh). Palladium a platina umo\u017e\u0148uj\u00ed p\u0159edev\u0161\u00edm oxidaci uhlovod\u00edk\u016f a oxidu uhelnat\u00e9ho, zat\u00edmco rhodium je kl\u00ed\u010dov\u00e9 pro redukci oxid\u016f dus\u00edku. 1<\/a>18<\/a>Vysok\u00fd obsah drah\u00fdch kov\u016f zvy\u0161uje cenu katalyz\u00e1toru a m\u016f\u017ee v\u00e9st ke sp\u00e9k\u00e1n\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch, co\u017e katalyz\u00e1tor deaktivuje. 1<\/a>Zejm\u00e9na popt\u00e1vka po platin\u011b roste. 3<\/a>.<\/li>\n\n\n\n
- Prac\u00ed pl\u00e1\u0161t\u011b:<\/strong> Na substr\u00e1t se nan\u00e1\u0161\u00ed por\u00e9zn\u00ed vrstva, zn\u00e1m\u00e1 jako washcoat. Tato vrstva, \u010dasto slo\u017een\u00e1 z oxid\u016f na b\u00e1zi ceriu, zv\u011bt\u0161uje povrch a p\u016fsob\u00ed jako \u010dinidlo pro ukl\u00e1d\u00e1n\u00ed kysl\u00edku, co\u017e je nezbytn\u00e9 pro schopnost t\u0159\u00edcestn\u00e9ho katalyz\u00e1toru efektivn\u011b fungovat p\u0159i r\u016fzn\u00fdch pom\u011brech vzduchu a paliva. 1<\/a>Nanotechnologie v katalytick\u00fdch povlac\u00edch zahrnuje stabilizovan\u00e9 krystality, materi\u00e1ly pro washcoat, kter\u00e9 si udr\u017euj\u00ed vysok\u00fd povrch p\u0159i teplot\u00e1ch kolem 1000 \u00b0C, vylep\u0161en\u00e9 komponenty pro ukl\u00e1d\u00e1n\u00ed kysl\u00edku a nov\u00e9 procesy nan\u00e1\u0161en\u00ed povlak\u016f pro optimalizaci distribuce povlaku. 16<\/a>.<\/li>\n\n\n\n
- Alternativn\u00ed katalyz\u00e1tory:<\/strong> Aktivn\u011b prob\u00edh\u00e1 v\u00fdzkum alternativn\u00edch, levn\u011bj\u0161\u00edch katalyz\u00e1tor\u016f, jako je pervoskit, spinel, monel a hopkalit, kter\u00e9 by nahradily u\u0161lechtil\u00e9 kovy v automobilov\u00fdch katalyz\u00e1torech, a to z d\u016fvodu vysok\u00fdch n\u00e1klad\u016f a cenov\u00e9 nest\u00e1losti PGM. 2<\/a>.<\/li>\n<\/ul>\n\n\n\n
Dal\u0161\u00ed faktory ovliv\u0148uj\u00edc\u00ed v\u00fdkon:<\/strong><\/p>\n\n\n\n
- \n
- Ukl\u00e1d\u00e1n\u00ed katalyz\u00e1toru:<\/strong> Specifick\u00fd proces pou\u017e\u00edvan\u00fd pro nan\u00e1\u0161en\u00ed katalytick\u00fdch materi\u00e1l\u016f na substr\u00e1t v\u00fdznamn\u011b ovliv\u0148uje celkovou \u00fa\u010dinnost katalyz\u00e1toru. 1<\/a>.<\/li>\n\n\n\n
- Faktory rychlosti reakce:<\/strong> Rychlost chemick\u00fdch reakc\u00ed uvnit\u0159 katalyz\u00e1toru je ovlivn\u011bna teplotou reakce, tlakem, koncentrac\u00ed reaktant\u016f, povrchem a p\u0159\u00edtomnost\u00ed katalyz\u00e1tor\u016f. 4<\/a>.<\/li>\n\n\n\n
- Teplota p\u0159i zhasnut\u00ed sv\u011btla:<\/strong> Katalyz\u00e1tory jsou \u00fa\u010dinn\u00e9 a\u017e po dosa\u017een\u00ed sv\u00e9 \u201eteploty pro zhasnut\u00ed\u201c, obvykle kolem 250\u2013300 \u00b0C. 10<\/a>Um\u00edst\u011bn\u00ed katalyz\u00e1toru bl\u00ed\u017ee k v\u00fdfukov\u00e9mu potrub\u00ed je efektivn\u00ed zp\u016fsob, jak dos\u00e1hnout rychl\u00e9ho zhasnut\u00ed. 10<\/a>Technologie jako Microlith\u00ae od PCI vyu\u017e\u00edvaj\u00ed substr\u00e1ty z dr\u00e1t\u011bn\u00e9ho pletiva, specializovan\u00e9 povlaky a unik\u00e1tn\u00ed konstrukce reaktor\u016f k dosa\u017een\u00ed rychl\u00e9ho zhasnut\u00ed sv\u011btla d\u00edky velmi vysok\u00fdm rychlostem p\u0159enosu tepla a hmoty. 10<\/a>.<\/li>\n\n\n\n
- Modelov\u00e1n\u00ed a optimalizace:<\/strong> Simulace v\u00fdpo\u010detn\u00ed dynamiky tekutin (CFD) se hojn\u011b pou\u017e\u00edvaj\u00ed k anal\u00fdze a optimalizaci syst\u00e9m\u016f dodate\u010dn\u00e9ho zpracov\u00e1n\u00ed v\u00fdfukov\u00fdch plyn\u016f, p\u0159i\u010dem\u017e se vyhodnocuje vliv konstrukce v\u00fdfukov\u00e9ho potrub\u00ed na rovnom\u011brnost proud\u011bn\u00ed kapaliny na vstupu do m\u011bni\u010de. 19<\/a>CFD m\u016f\u017ee pomoci udr\u017eet rovnom\u011brn\u00fd tok, udr\u017eet pokles tlaku v kritick\u00fdch mez\u00edch a udr\u017eovat teploty katalyz\u00e1toru v po\u017eadovan\u00e9m rozsahu. 19<\/a>Substr\u00e1t katalyz\u00e1toru je v CFD \u010dasto modelov\u00e1n jako por\u00e9zn\u00ed m\u00e9dium, definovan\u00e9 visk\u00f3zn\u00edmi a inerci\u00e1ln\u00edmi odporov\u00fdmi vlastnostmi. 19<\/a>Jednorozm\u011brn\u00e9 (1D) stacion\u00e1rn\u00ed modely katalyz\u00e1tor\u016f s p\u00edstov\u00fdm tokem se pou\u017e\u00edvaj\u00ed k predikci v\u00fdkonu, zat\u00edmco nulorozm\u011brn\u00e9 (0D) modely se pou\u017e\u00edvaj\u00ed pro dimenzov\u00e1n\u00ed katalyz\u00e1toru a predikci v\u00fdkonu. 19<\/a>.<\/li>\n<\/ul>\n\n\n\n
5. Aspekty instalace a integrace<\/h2>\n\n\n\n
Spr\u00e1vn\u00e1 instalace a integrace katalyz\u00e1toru jsou stejn\u011b d\u016fle\u017eit\u00e9 jako jeho v\u00fdb\u011br pro zaji\u0161t\u011bn\u00ed optim\u00e1ln\u00edho v\u00fdkonu, \u017eivotnosti a shody s p\u0159edpisy. Tato \u010d\u00e1st se zab\u00fdv\u00e1 praktick\u00fdmi aspekty mont\u00e1\u017ee, um\u00edst\u011bn\u00ed senzor\u016f, regulace tepla a zaji\u0161t\u011bn\u00ed spr\u00e1vn\u00e9ho proud\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f a struktur\u00e1ln\u00ed integrity.<\/p>\n\n\n\n
Mont\u00e1\u017e a um\u00edst\u011bn\u00ed:<\/strong><\/p>\n\n\n\n
- \n
- Vzd\u00e1lenost k motoru:<\/strong> Pro optim\u00e1ln\u00ed emisn\u00ed v\u00fdkon, zejm\u00e9na p\u0159i studen\u00e9m startu, um\u00edst\u011bn\u00ed katalyz\u00e1toru bl\u00ed\u017ee k motoru pom\u00e1h\u00e1 rychleji dos\u00e1hnout jeho \u201ez\u00e1palov\u00e9\u201c teploty (obvykle 250\u2013300 \u00b0C). 10<\/a>N\u011bkter\u00e9 modern\u00ed motory dokonce integruj\u00ed m\u011bni\u010d p\u0159\u00edmo do v\u00fdfukov\u00e9ho potrub\u00ed. 25<\/a>Monoblokovan\u00e9 m\u011bni\u010de jsou v\u0161ak vystaveny vy\u0161\u0161\u00edm teplot\u00e1m a zv\u00fd\u0161en\u00e9 vibra\u010dn\u00ed energii z motoru, co\u017e m\u016f\u017ee ovlivnit jejich \u017eivotnost. 34<\/a>.<\/li>\n\n\n\n
- Um\u00edst\u011bn\u00ed st\u0159edn\u00ed \u010d\u00e1sti trubky a pod vozidlem:<\/strong> Katalyz\u00e1tor se obvykle nach\u00e1z\u00ed ve st\u0159edn\u00ed \u010d\u00e1sti v\u00fdfukov\u00e9ho syst\u00e9mu, mezi motorem a tlumi\u010dem v\u00fdfuku. 26<\/a>Mont\u00e1\u017e pod vozidlo je b\u011b\u017en\u00e1 kv\u016fli efektivit\u011b prostoru a odvodu tepla. 26<\/a>.<\/li>\n\n\n\n
- Orientace:<\/strong> M\u011bni\u010d mus\u00ed b\u00fdt instalov\u00e1n ve spr\u00e1vn\u00e9m sm\u011bru, kter\u00fd odpov\u00edd\u00e1 proud\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f, co\u017e je obvykle ozna\u010deno \u0161ipkou na t\u011blese m\u011bni\u010de. 26<\/a>.<\/li>\n\n\n\n
- P\u0159iva\u0159en\u00ed vs. \u0161roubov\u00e1n\u00ed:<\/strong>\n
- \n
- P\u0159i\u0161roubov\u00e1n\u00ed:<\/strong> Nab\u00edz\u00ed snadn\u011bj\u0161\u00ed instalaci a v\u00fdm\u011bnu, \u010dasto preferov\u00e1no pro p\u0159\u00edm\u00e9 v\u00fdm\u011bny od OEM.<\/li>\n\n\n\n
- P\u0159iva\u0159en\u00ed:<\/strong> Poskytuje bezpe\u010dn\u011bj\u0161\u00ed a \u010dasto i pr\u016ftokov\u011bj\u0161\u00ed spojen\u00ed, b\u011b\u017en\u00e9 u zak\u00e1zkov\u00fdch nebo v\u00fdkonn\u00fdch v\u00fdfukov\u00fdch syst\u00e9m\u016f. Sva\u0159ov\u00e1n\u00ed MIG se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 pro v\u00fdrobu v\u00fdfuk\u016f. 21<\/a>Zak\u00e1zkov\u00e9 v\u00fdfukov\u00e9 syst\u00e9my \u010dasto vyu\u017e\u00edvaj\u00ed trnem oh\u00fdban\u00e9 trubky pro lep\u0161\u00ed proud\u011bn\u00ed vzduchu a sn\u00ed\u017een\u00ed protitlaku. 33<\/a>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
Um\u00edst\u011bn\u00ed z\u00e1tky senzoru O2:<\/strong><\/p>\n\n\n\n
Kysl\u00edkov\u00e9 (O2) senzory jsou nezbytn\u00e9 pro sledov\u00e1n\u00ed v\u00fdkonu motoru a \u00fa\u010dinnosti katalyz\u00e1toru. Jejich spr\u00e1vn\u00e9 um\u00edst\u011bn\u00ed je kl\u00ed\u010dov\u00e9:<\/p>\n\n\n\n
- \n
- Senzor O2 proti proudu:<\/strong> Um\u00edst\u011bno p\u0159ed<\/em> Katalyz\u00e1tor, tento senzor monitoruje pom\u011br vzduchu a paliva a v\u00fdkon motoru. U atmosf\u00e9rick\u00fdch motor\u016f by m\u011bl b\u00fdt um\u00edst\u011bn do 30-45 cm od v\u00fdfukov\u00e9ho potrub\u00ed nebo sb\u011brn\u00e9ho potrub\u00ed. U p\u0159epl\u0148ovan\u00fdch motor\u016f mus\u00ed b\u00fdt um\u00edst\u011bn za turbodmychadlem. 27<\/a>.<\/li>\n\n\n\n
- Senzor O2 za proudem:<\/strong> Nach\u00e1z\u00ed se po<\/em> katalyz\u00e1tor, tento senzor vyhodnocuje jeho \u00fa\u010dinnost porovn\u00e1v\u00e1n\u00edm hladiny kysl\u00edku p\u0159ed a za katalyz\u00e1torem 27<\/a>.<\/li>\n\n\n\n
- Syst\u00e9my s dvojit\u00fdm senzorem:<\/strong> Mnoho modern\u00edch vozidel pou\u017e\u00edv\u00e1 du\u00e1ln\u00ed kysl\u00edkov\u00e9 senzory (lambda sondy), p\u0159i\u010dem\u017e senzor p\u0159ed motorem \u0159\u00edd\u00ed v\u00fdkon motoru a senzor za motorem monitoruje \u00fa\u010dinnost katalyz\u00e1toru. 27<\/a>.<\/li>\n\n\n\n
- \u00dahel instalace:<\/strong> Z\u00e1tky senzoru O2 by m\u011bly b\u00fdt instalov\u00e1ny v \u00fahlu 10\u201345 stup\u0148\u016f nad vodorovnou rovinou, aby se zabr\u00e1nilo hromad\u011bn\u00ed kondenzace na hrotu senzoru, co\u017e by mohlo zp\u016fsobit jeho po\u0161kozen\u00ed. 27<\/a>Ujist\u011bte se, \u017ee hrot senzoru O2 je pln\u011b vystaven proudu v\u00fdfukov\u00fdch plyn\u016f. 27<\/a>Naneste na z\u00e1vity senzor\u016f prost\u0159edek proti zad\u0159en\u00ed, pokud nejsou p\u0159edem opat\u0159eny n\u00e1t\u011brem, a ut\u00e1hn\u011bte senzory p\u0159edepsan\u00fdm utahovac\u00edm momentem, aby nedo\u0161lo k jejich po\u0161kozen\u00ed. 37<\/a>.<\/li>\n<\/ul>\n\n\n\n
\u0158\u00edzen\u00ed tepla:<\/strong><\/p>\n\n\n\n
Katalyz\u00e1tory pracuj\u00ed p\u0159i extr\u00e9mn\u011b vysok\u00fdch teplot\u00e1ch (\u010dasto p\u0159esahuj\u00edc\u00edch 538 \u00b0C nebo 1000 \u00b0F) 29<\/a>, d\u00edky \u010demu\u017e je efektivn\u00ed \u0159\u00edzen\u00ed tepla kl\u00ed\u010dov\u00e9 pro dlouhou \u017eivotnost sou\u010d\u00e1st\u00ed a bezpe\u010dnost vozidla:<\/p>\n\n\n\n
- \n
- Tepeln\u00e9 \u0161t\u00edty:<\/strong> Nezbytn\u00e9 pro ochranu bl\u00edzk\u00fdch sou\u010d\u00e1st\u00ed (kabel\u00e1\u017e, plastov\u00e9 d\u00edly, palivov\u00e9 potrub\u00ed, p\u0159evodovky) a interi\u00e9ru vozidla p\u0159ed s\u00e1lav\u00fdm teplem 29<\/a>Tepeln\u00e9 \u0161t\u00edty mohou b\u00fdt vyrobeny z materi\u00e1l\u016f, jako je \u010dedi\u010dov\u00e1 tkanina, keramick\u00e1 izolace a vnit\u0159n\u00ed vrstvy z oxidu k\u0159emi\u010dit\u00e9ho, kter\u00e9 jsou schopny odol\u00e1vat trval\u00fdm teplot\u00e1m a\u017e do 1 000 \u00b0C. 30<\/a>.<\/li>\n\n\n\n
- Kryty katalyz\u00e1tor\u016f:<\/strong> Tyto prvky poskytuj\u00ed tepelnou izolaci pro udr\u017een\u00ed optim\u00e1ln\u00edch provozn\u00edch teplot uvnit\u0159 m\u011bni\u010de, \u010d\u00edm\u017e se zlep\u0161uje \u00fa\u010dinnost a sni\u017euje se tepeln\u00e9 z\u00e1\u0159en\u00ed do okoln\u00edch prostor. 29<\/a>.<\/li>\n\n\n\n
- Keramick\u00e9 povlaky:<\/strong> Aplikace keramick\u00fdch povlak\u016f na sou\u010d\u00e1sti v\u00fdfukov\u00e9ho syst\u00e9mu m\u016f\u017ee pomoci s tepeln\u00fdm \u0159\u00edzen\u00edm sn\u00ed\u017een\u00edm p\u0159enosu tepla 29<\/a>.<\/li>\n\n\n\n
- Vzduchov\u00e9 mezery:<\/strong> Za\u010dlen\u011bn\u00ed vzduchov\u00fdch mezer do konstrukce v\u00fdfuku m\u016f\u017ee poskytnout dodate\u010dnou izolaci 29<\/a>.<\/li>\n\n\n\n
- Technologie pro uchov\u00e1n\u00ed tepla:<\/strong> Pro lep\u0161\u00ed sn\u00ed\u017een\u00ed emis\u00ed p\u0159i studen\u00e9m startu lze k udr\u017een\u00ed tepla uvnit\u0159 m\u011bni\u010de pou\u017e\u00edt technologie, jako je vakuov\u00e1 izolace a akumulace tepla s f\u00e1zovou zm\u011bnou. 31<\/a>.<\/li>\n\n\n\n
- Teplotn\u00ed limity:<\/strong> Je z\u00e1sadn\u00ed udr\u017eovat teplotu katalyz\u00e1toru v bezpe\u010dn\u00fdch mez\u00edch, obvykle kolem 1000 \u00b0C, aby se zabr\u00e1nilo tepeln\u00e9 degradaci a p\u0159ed\u010dasn\u00e9mu selh\u00e1n\u00ed. 29<\/a>.<\/li>\n\n\n\n
- Bezpe\u010dnost palivov\u00e9ho syst\u00e9mu:<\/strong> Palivov\u00e1 \u010derpadla by nem\u011bla b\u00fdt um\u00edst\u011bna do 30 cm od katalyz\u00e1toru a palivov\u00e9 potrub\u00ed mus\u00ed b\u00fdt vedeno mimo z\u00f3nu s vysok\u00fdm zah\u0159\u00edv\u00e1n\u00edm katalyz\u00e1toru, aby se p\u0159ede\u0161lo nebezpe\u010d\u00ed po\u017e\u00e1ru. 29<\/a>.<\/li>\n<\/ul>\n\n\n\n
Proud\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f a struktur\u00e1ln\u00ed integrita:<\/strong><\/p>\n\n\n\n
- \n
- Plynul\u00fd tok:<\/strong> Zaji\u0161t\u011bn\u00ed plynul\u00e9ho proud\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f je z\u00e1sadn\u00ed pro minimalizaci turbulenc\u00ed a protitlaku, kter\u00e9 mohou negativn\u011b ovlivnit v\u00fdkon motoru. 32<\/a>Pr\u016fm\u011br a tvar v\u00fdfukov\u00fdch trubek v\u00fdznamn\u011b ovliv\u0148uj\u00ed pr\u016ftok a tlakovou ztr\u00e1tu. 32<\/a>.<\/li>\n\n\n\n
- Minimalizace protitlaku:<\/strong> Optimalizace konstrukce substr\u00e1tu a celkov\u00e9 konfigurace v\u00fdfukov\u00e9ho syst\u00e9mu je kl\u00ed\u010dem k minimalizaci poklesu tlaku nap\u0159\u00ed\u010d konvertorem. 32<\/a>I kdy\u017e je pro lad\u011bn\u00ed motoru pot\u0159eba ur\u010dit\u00fd protitlak, nadm\u011brn\u00fd protitlak z ucpan\u00e9ho nebo nespr\u00e1vn\u011b navr\u017een\u00e9ho m\u011bni\u010de m\u016f\u017ee sn\u00ed\u017eit v\u00fdkon motoru. 21<\/a>.<\/li>\n\n\n\n
- \u0158\u00edzen\u00ed vibrac\u00ed:<\/strong> V\u00fdfukov\u00e9 syst\u00e9my jsou vystaveny zna\u010dn\u00fdm vibrac\u00edm z motoru. Spr\u00e1vn\u00e1 mont\u00e1\u017e je nezbytn\u00e1 pro odol\u00e1v\u00e1n\u00ed termomechanick\u00e9mu nam\u00e1h\u00e1n\u00ed a vibrac\u00edm. 34<\/a>Tlumi\u010de v\u00fdfuku nebo strategicky um\u00edst\u011bn\u00e9 tlumi\u010de mohou kompenzovat vibrace motoru a zabr\u00e1nit jejich p\u0159enosu na karoserii vozu. 34<\/a>.<\/li>\n\n\n\n
- Sn\u00edma\u010d EGT:<\/strong> Sn\u00edma\u010de teploty v\u00fdfukov\u00fdch plyn\u016f (EGT) monitoruj\u00ed teplotu v\u00fdfukov\u00fdch plyn\u016f v r\u016fzn\u00fdch bodech (p\u0159ed\/za turbodmychadlem, katalyz\u00e1torem, DPF), aby chr\u00e1nily komponenty p\u0159ed tepeln\u00fdm p\u0159et\u00ed\u017een\u00edm. 35<\/a>Data ze senzor\u016f EGT jsou odes\u00edl\u00e1na do \u0159\u00eddic\u00ed jednotky motoru (ECU), kter\u00e1 upravuje vst\u0159ikov\u00e1n\u00ed paliva, \u010dasov\u00e1n\u00ed zapalov\u00e1n\u00ed nebo plnic\u00ed tlak, a t\u00edm reguluje teploty. 35<\/a>Vadn\u00e9 senzory EGT mohou spustit rozsv\u00edcen\u00ed kontrolky \u201eCheck Engine\u201c a ulo\u017eit diagnostick\u00e9 k\u00f3dy. 37<\/a>U vzn\u011btov\u00fdch motor\u016f jsou senzory EGT kl\u00ed\u010dov\u00e9 pro monitorov\u00e1n\u00ed teploty DPF filtru pro regenera\u010dn\u00ed procesy. 37<\/a>.<\/li>\n<\/ul>\n\n\n\n
Obecn\u00e9 postupy instalace:<\/strong><\/p>\n\n\n\n
- \n
- P\u0159\u00edm\u00e9 uchycen\u00ed vs. univerz\u00e1ln\u00ed uchycen\u00ed:<\/strong> Vyberte si mezi p\u0159\u00edmo montovateln\u00fdmi p\u0159evodn\u00edky ur\u010den\u00fdmi pro konkr\u00e9tn\u00ed modely vozidel a univerz\u00e1ln\u00edmi p\u0159evodn\u00edky, kter\u00e9 vy\u017eaduj\u00ed \u00fapravy pro instalaci. 39<\/a>.<\/li>\n\n\n\n
- Kontroly p\u0159ed instalac\u00ed:<\/strong> P\u0159ed v\u00fdm\u011bnou katalyz\u00e1toru je nezbytn\u00e9 diagnostikovat a odstranit p\u0159\u00ed\u010dinu p\u016fvodn\u00ed poruchy (nap\u0159. vynech\u00e1v\u00e1n\u00ed zapalov\u00e1n\u00ed motoru, vadn\u00e9 senzory O2, \u00faniky v\u00fdfukov\u00fdch plyn\u016f), aby se zabr\u00e1nilo p\u0159ed\u010dasn\u00e9mu po\u0161kozen\u00ed nov\u00e9 jednotky. 40<\/a>.<\/li>\n\n\n\n
- Bezpe\u010dnost a n\u00e1\u0159ad\u00ed:<\/strong> V\u017edy pou\u017e\u00edvejte vhodn\u00e9 n\u00e1\u0159ad\u00ed (zved\u00e1k, podp\u011bry, kl\u00ed\u010de) a bezpe\u010dnostn\u00ed pom\u016fcky (ochrann\u00e9 br\u00fdle). P\u0159ed zah\u00e1jen\u00edm pr\u00e1ce se ujist\u011bte, \u017ee je vozidlo chladn\u00e9. 39<\/a>.<\/li>\n\n\n\n
- Spr\u00e1vn\u00e9 uchycen\u00ed:<\/strong> Pou\u017eijte nov\u00e9 mont\u00e1\u017en\u00ed sady, abyste zajistili spr\u00e1vn\u00e9 matice a \u0161rouby 40<\/a>Na katalyz\u00e1tor nenan\u00e1\u0161ejte tmel ani pastu na v\u00fdfukov\u00e9 plyny, mohlo by doj\u00edt k po\u0161kozen\u00ed katalyz\u00e1toru. 40<\/a>Nikdy do m\u011bni\u010de neude\u0159te kladivem nebo kladivem, abyste ho n\u00e1sil\u00edm zajistili na m\u00edsto. 40<\/a>.<\/li>\n\n\n\n
- Po instalaci:<\/strong> Po instalaci d\u016fkladn\u011b zkontrolujte, zda nedoch\u00e1z\u00ed k \u00fanik\u016fm v\u00fdfukov\u00fdch plyn\u016f 37<\/a>Ujist\u011bte se, \u017ee v\u0161echny kabely senzor\u016f jsou bezpe\u010dn\u011b upevn\u011bny a nejsou v kontaktu s hork\u00fdm v\u00fdfukov\u00fdm syst\u00e9mem. 40<\/a>Nakonec vyma\u017ete v\u0161echny souvisej\u00edc\u00ed chybov\u00e9 k\u00f3dy z \u0159\u00eddic\u00ed jednotky motoru (ECU). 40<\/a>Pokud si nejste jisti bezpe\u010dnou a spr\u00e1vnou instalac\u00ed, vyhledejte odbornou pomoc. 39<\/a>.<\/li>\n<\/ul>\n\n\n\n
Chrast\u00edc\u00ed zvuk zespodu vozidla m\u016f\u017ee nazna\u010dovat zhroucen\u00ed vo\u0161tinov\u00e9 struktury uvnit\u0159 katalyz\u00e1toru, co\u017e signalizuje pot\u0159ebu jeho v\u00fdm\u011bny. 23<\/a>Porucha katalyz\u00e1toru m\u016f\u017ee tak\u00e9 spustit rozsv\u00edcen\u00ed kontrolky \u201eCheck Engine\u201c v d\u016fsledku zji\u0161t\u011bn\u00fdch probl\u00e9m\u016f s emisemi. 24<\/a>a v\u00e9st ke sn\u00ed\u017een\u00ed v\u00fdkonu motoru, t\u0159esen\u00ed, zhas\u00edn\u00e1n\u00ed a sn\u00ed\u017een\u00e9 spot\u0159eb\u011b paliva 24<\/a>.<\/p>\n\n\n\n
Proaktivn\u00ed \u00favahy:<\/strong><\/p>\n\n\n\n
Automobilov\u00fd pr\u016fmysl se s ohledem do budoucna neust\u00e1le vyv\u00edj\u00ed. Zat\u00edmco zav\u00e1d\u011bn\u00ed bateriov\u00fdch elektromobil\u016f (BEV) se zpomalilo kv\u016fli probl\u00e9m\u016fm s infrastrukturou a dodavatelsk\u00fdm \u0159et\u011bzcem. 3<\/a>Vozidla se spalovac\u00edm motorem (ICE) z\u016fstanou v dohledn\u00e9 budoucnosti st\u00e1le roz\u0161\u00ed\u0159en\u00e1. To vy\u017eaduje neust\u00e1l\u00e9 inovace v technologii katalyz\u00e1tor\u016f. Budouc\u00ed \u00favahy pro automobilov\u00e9 projekty by m\u011bly zahrnovat:<\/p>\n\n\n\n
- \n
- O\u010dek\u00e1v\u00e1n\u00ed p\u0159\u00edsn\u011bj\u0161\u00edch p\u0159edpis\u016f:<\/strong> I kdy\u017e sou\u010dasn\u00e9 c\u00edle projektu spl\u0148uj\u00ed st\u00e1vaj\u00edc\u00ed emisn\u00ed normy, je rozumn\u00e9 zv\u00e1\u017eit mo\u017en\u00e9 budouc\u00ed zp\u0159\u00edsn\u011bn\u00ed p\u0159edpis\u016f (nap\u0159. Euro 7, p\u0159\u00edsn\u011bj\u0161\u00ed mand\u00e1ty CARB), aby se zajistil dlouhodob\u00fd soulad a zabr\u00e1nilo se n\u00e1kladn\u00fdm modernizac\u00edm.<\/li>\n\n\n\n
- Pokro\u010dil\u00e9 materi\u00e1ly a v\u00fdroba:<\/strong> Prozkoumejte nov\u011b vznikaj\u00edc\u00ed technologie, jako je aditivn\u00ed v\u00fdroba, pro vytv\u00e1\u0159en\u00ed nov\u00fdch vnit\u0159n\u00edch geometri\u00ed, jako jsou m\u0159\u00ed\u017ekov\u00e9 substr\u00e1ty na b\u00e1zi diamantu, kter\u00e9 prok\u00e1zaly v\u00fdznamn\u00e9 zlep\u0161en\u00ed teplot zhasnut\u00ed CO, THC a NOx.x<\/em>ve srovn\u00e1n\u00ed s konven\u010dn\u00edmi konstrukcemi 18<\/a>.<\/li>\n\n\n\n
- Chytr\u00e9 katalyz\u00e1tory:<\/strong> Spekulativn\u011b by integrace inteligentn\u00edch senzor\u016f a model\u016f um\u011bl\u00e9 inteligence\/strojn\u00edho u\u010den\u00ed mohla umo\u017enit prediktivn\u00ed \u00fadr\u017ebu katalyz\u00e1tor\u016f, optimalizovat jejich v\u00fdkon a \u017eivotnost dynamick\u00fdm upravov\u00e1n\u00edm parametr\u016f motoru na z\u00e1klad\u011b dat o stavu a \u00fa\u010dinnosti katalyz\u00e1toru v re\u00e1ln\u00e9m \u010dase. To by tak\u00e9 mohlo v\u00e9st k p\u0159esn\u011bj\u0161\u00ed kontrole nad n\u00e1pln\u00ed a distribuc\u00ed drah\u00fdch kov\u016f.<\/li>\n\n\n\n
- Recyklace a udr\u017eitelnost:<\/strong> Vzhledem k omezen\u00e9 glob\u00e1ln\u00ed nab\u00eddce a cenov\u00e9 volatilit\u011b PGM z\u00edsk\u00e1vaj\u00ed inovace v recyklaci katalyz\u00e1tor\u016f na popularit\u011b. 15<\/a>Projekty by mohly proaktivn\u011b zv\u00e1\u017eit recykla\u010dn\u00ed potenci\u00e1l vybran\u00e9ho katalyz\u00e1toru na konci jeho \u017eivotnosti.<\/li>\n<\/ul>\n\n\n\n
D\u00edky pe\u010dliv\u00e9mu zv\u00e1\u017een\u00ed t\u011bchto faktor\u016f mohou projektov\u00ed mana\u017ee\u0159i a in\u017een\u00fd\u0159i v automobilov\u00e9m pr\u016fmyslu \u010dinit informovan\u00e1 rozhodnut\u00ed ohledn\u011b v\u00fdb\u011bru a integrace katalyz\u00e1toru, a zajistit tak optim\u00e1ln\u00ed v\u00fdkon, soulad s p\u0159edpisy a dlouhodobou spolehlivost pro sv\u00e9 specifick\u00e9 aplikace.<\/p>","protected":false},"excerpt":{"rendered":"
Zjist\u011bte, jak s jistotou vybrat a integrovat katalyz\u00e1tory. Zajist\u011bte shodu s p\u0159edpisy, v\u00fdkon a spolehlivost va\u0161ich automobilov\u00fdch projekt\u016f.<\/p>","protected":false},"author":1,"featured_media":3326,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowgdPcCw:productID":"","footnotes":""},"categories":[98],"tags":[438,436,106,431,428,427,433,434,435,432,429,32,424,426,425,437,101,430,108,405,113,26],"class_list":["post-3322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","tag-backpressure","tag-carb","tag-catalytic-converter","tag-catalytic-converter-installation","tag-cell-density","tag-ceramic-substrate","tag-classic-car-restoration","tag-cpsi","tag-custom-build","tag-emissions-regulations","tag-epa","tag-exhaust-system","tag-heat-management","tag-metallic-substrate","tag-o2-sensor","tag-oem-replacement","tag-palladium","tag-performance-upgrade","tag-platinum","tag-precious-metals","tag-rhodium","tag-three-way-catalytic-converter"],"_links":{"self":[{"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/posts\/3322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/comments?post=3322"}],"version-history":[{"count":0,"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/posts\/3322\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/media\/3326"}],"wp:attachment":[{"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/media?parent=3322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/categories?post=3322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3waycatalyst.com\/cs\/wp-json\/wp\/v2\/tags?post=3322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Pokro\u010dil\u00e9 materi\u00e1ly a v\u00fdroba:<\/strong> Prozkoumejte nov\u011b vznikaj\u00edc\u00ed technologie, jako je aditivn\u00ed v\u00fdroba, pro vytv\u00e1\u0159en\u00ed nov\u00fdch vnit\u0159n\u00edch geometri\u00ed, jako jsou m\u0159\u00ed\u017ekov\u00e9 substr\u00e1ty na b\u00e1zi diamantu, kter\u00e9 prok\u00e1zaly v\u00fdznamn\u00e9 zlep\u0161en\u00ed teplot zhasnut\u00ed CO, THC a NOx.x<\/em>ve srovn\u00e1n\u00ed s konven\u010dn\u00edmi konstrukcemi 18<\/a>.<\/li>\n\n\n\n
- Kontroly p\u0159ed instalac\u00ed:<\/strong> P\u0159ed v\u00fdm\u011bnou katalyz\u00e1toru je nezbytn\u00e9 diagnostikovat a odstranit p\u0159\u00ed\u010dinu p\u016fvodn\u00ed poruchy (nap\u0159. vynech\u00e1v\u00e1n\u00ed zapalov\u00e1n\u00ed motoru, vadn\u00e9 senzory O2, \u00faniky v\u00fdfukov\u00fdch plyn\u016f), aby se zabr\u00e1nilo p\u0159ed\u010dasn\u00e9mu po\u0161kozen\u00ed nov\u00e9 jednotky. 40<\/a>.<\/li>\n\n\n\n
- Minimalizace protitlaku:<\/strong> Optimalizace konstrukce substr\u00e1tu a celkov\u00e9 konfigurace v\u00fdfukov\u00e9ho syst\u00e9mu je kl\u00ed\u010dem k minimalizaci poklesu tlaku nap\u0159\u00ed\u010d konvertorem. 32<\/a>I kdy\u017e je pro lad\u011bn\u00ed motoru pot\u0159eba ur\u010dit\u00fd protitlak, nadm\u011brn\u00fd protitlak z ucpan\u00e9ho nebo nespr\u00e1vn\u011b navr\u017een\u00e9ho m\u011bni\u010de m\u016f\u017ee sn\u00ed\u017eit v\u00fdkon motoru. 21<\/a>.<\/li>\n\n\n\n
- Kryty katalyz\u00e1tor\u016f:<\/strong> Tyto prvky poskytuj\u00ed tepelnou izolaci pro udr\u017een\u00ed optim\u00e1ln\u00edch provozn\u00edch teplot uvnit\u0159 m\u011bni\u010de, \u010d\u00edm\u017e se zlep\u0161uje \u00fa\u010dinnost a sni\u017euje se tepeln\u00e9 z\u00e1\u0159en\u00ed do okoln\u00edch prostor. 29<\/a>.<\/li>\n\n\n\n
- Senzor O2 za proudem:<\/strong> Nach\u00e1z\u00ed se po<\/em> katalyz\u00e1tor, tento senzor vyhodnocuje jeho \u00fa\u010dinnost porovn\u00e1v\u00e1n\u00edm hladiny kysl\u00edku p\u0159ed a za katalyz\u00e1torem 27<\/a>.<\/li>\n\n\n\n
- P\u0159iva\u0159en\u00ed:<\/strong> Poskytuje bezpe\u010dn\u011bj\u0161\u00ed a \u010dasto i pr\u016ftokov\u011bj\u0161\u00ed spojen\u00ed, b\u011b\u017en\u00e9 u zak\u00e1zkov\u00fdch nebo v\u00fdkonn\u00fdch v\u00fdfukov\u00fdch syst\u00e9m\u016f. Sva\u0159ov\u00e1n\u00ed MIG se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 pro v\u00fdrobu v\u00fdfuk\u016f. 21<\/a>Zak\u00e1zkov\u00e9 v\u00fdfukov\u00e9 syst\u00e9my \u010dasto vyu\u017e\u00edvaj\u00ed trnem oh\u00fdban\u00e9 trubky pro lep\u0161\u00ed proud\u011bn\u00ed vzduchu a sn\u00ed\u017een\u00ed protitlaku. 33<\/a>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
- Um\u00edst\u011bn\u00ed st\u0159edn\u00ed \u010d\u00e1sti trubky a pod vozidlem:<\/strong> Katalyz\u00e1tor se obvykle nach\u00e1z\u00ed ve st\u0159edn\u00ed \u010d\u00e1sti v\u00fdfukov\u00e9ho syst\u00e9mu, mezi motorem a tlumi\u010dem v\u00fdfuku. 26<\/a>Mont\u00e1\u017e pod vozidlo je b\u011b\u017en\u00e1 kv\u016fli efektivit\u011b prostoru a odvodu tepla. 26<\/a>.<\/li>\n\n\n\n
- Faktory rychlosti reakce:<\/strong> Rychlost chemick\u00fdch reakc\u00ed uvnit\u0159 katalyz\u00e1toru je ovlivn\u011bna teplotou reakce, tlakem, koncentrac\u00ed reaktant\u016f, povrchem a p\u0159\u00edtomnost\u00ed katalyz\u00e1tor\u016f. 4<\/a>.<\/li>\n\n\n\n
- Prac\u00ed pl\u00e1\u0161t\u011b:<\/strong> Na substr\u00e1t se nan\u00e1\u0161\u00ed por\u00e9zn\u00ed vrstva, zn\u00e1m\u00e1 jako washcoat. Tato vrstva, \u010dasto slo\u017een\u00e1 z oxid\u016f na b\u00e1zi ceriu, zv\u011bt\u0161uje povrch a p\u016fsob\u00ed jako \u010dinidlo pro ukl\u00e1d\u00e1n\u00ed kysl\u00edku, co\u017e je nezbytn\u00e9 pro schopnost t\u0159\u00edcestn\u00e9ho katalyz\u00e1toru efektivn\u011b fungovat p\u0159i r\u016fzn\u00fdch pom\u011brech vzduchu a paliva. 1<\/a>Nanotechnologie v katalytick\u00fdch povlac\u00edch zahrnuje stabilizovan\u00e9 krystality, materi\u00e1ly pro washcoat, kter\u00e9 si udr\u017euj\u00ed vysok\u00fd povrch p\u0159i teplot\u00e1ch kolem 1000 \u00b0C, vylep\u0161en\u00e9 komponenty pro ukl\u00e1d\u00e1n\u00ed kysl\u00edku a nov\u00e9 procesy nan\u00e1\u0161en\u00ed povlak\u016f pro optimalizaci distribuce povlaku. 16<\/a>.<\/li>\n\n\n\n
- Ni\u017e\u0161\u00ed hustota bun\u011bk (nap\u0159. 200\u2013400 cpsi):<\/strong> Ni\u017e\u0161\u00ed hustota bun\u011bk sni\u017euje protitlak a omezen\u00ed na jednotku plochy, co\u017e je \u010din\u00ed vhodn\u00fdmi pro v\u00fdkonn\u00e9 aplikace, kde je z\u00e1sadn\u00ed maximalizace pr\u016ftoku v\u00fdfukov\u00fdch plyn\u016f. 9<\/a>\u010casto se tak\u00e9 pou\u017e\u00edvaj\u00ed pro dodate\u010dnou mont\u00e1\u017e dieselov\u00fdch motor\u016f, aby se minimalizovalo riziko ucp\u00e1n\u00ed sazemi. 7<\/a>\u201eOfsetov\u00fd substr\u00e1t\u201c s hustotou bun\u011bk 400 cpsi (OS-400) vykazuje o 40 % vy\u0161\u0161\u00ed tlakovou ztr\u00e1tu ne\u017e konven\u010dn\u00ed kovov\u00fd substr\u00e1t se stejnou hustotou bun\u011bk (Metal-400). 17<\/a>Ofsetov\u00e9 substr\u00e1ty v\u0161ak vykazuj\u00ed lep\u0161\u00ed hou\u017eevnatost v prostorov\u00e9 rychlosti (SV) a men\u0161\u00ed zhor\u0161en\u00ed katalytick\u00e9 reakce se zvy\u0161uj\u00edc\u00edm se pr\u016ftokem plynu. 17<\/a>.<\/li>\n<\/ul>\n\n\n\n
- Metalick\u00e1 (nerezov\u00e1 f\u00f3lie):<\/strong> Kovov\u00e9 substr\u00e1ty, \u010dasto vyroben\u00e9 z nerezov\u00e9 f\u00f3lie, nab\u00edzej\u00ed ve srovn\u00e1n\u00ed s keramick\u00fdmi substr\u00e1ty stejn\u00e9 velikosti vynikaj\u00edc\u00ed odolnost, vy\u0161\u0161\u00ed tepelnou vodivost a ni\u017e\u0161\u00ed protitlak d\u00edky sv\u00e9 v\u011bt\u0161\u00ed otev\u0159en\u00e9 \u010deln\u00ed plo\u0161e. 19<\/a>Jsou odoln\u011bj\u0161\u00ed v\u016f\u010di fyzik\u00e1ln\u00edm n\u00e1raz\u016fm a tepeln\u00fdm \u0161ok\u016fm, d\u00edky \u010demu\u017e jsou vhodn\u00e9 pro vysoce v\u00fdkonn\u00e9 nebo \u00fazk\u00e9 aplikace. Spole\u010dnost Nippon Steel vyvinula \u201esubstr\u00e1t s \u03b1 filmem\u201c se speci\u00e1ln\u00edm oxidov\u00fdm filmem na povrchu nerezov\u00e9 oceli, kter\u00fd poskytuje vynikaj\u00edc\u00ed odolnost proti kysel\u00e9 korozi, co\u017e je v\u00fdhodn\u00e9 v syst\u00e9mech SCR. 17<\/a>.<\/li>\n<\/ul>\n\n\n\n
- Trojcestn\u00e9 katalyz\u00e1tory<\/a> (TWC):<\/strong>\u00a0TWC, pou\u017e\u00edvan\u00e9 p\u0159ev\u00e1\u017en\u011b v benz\u00ednov\u00fdch motorech, jsou schopny sou\u010dasn\u011b prov\u00e1d\u011bt oxida\u010dn\u00ed i reduk\u010dn\u00ed reakce. P\u0159em\u011b\u0148uj\u00ed CO a HC na CO22 a H22O a redukuj\u00ed oxidy dus\u00edku (NOx)x<\/em>\u200b) na dus\u00edk (N22\u200b) a kysl\u00edk (O22\u200b)\u00a01<\/a>T\u00e9to dvoj\u00ed funkce je dosa\u017eeno p\u0159esnou regulac\u00ed pom\u011bru vzduchu a paliva a pou\u017eit\u00edm specifick\u00fdch drah\u00fdch kov\u016f.\u00a01<\/a>.<\/li>\n<\/ul>\n\n\n\n
- Evropsk\u00e1 unie (euronormy):<\/strong> EU m\u00e1 sv\u00e9 vlastn\u00ed p\u0159\u00edsn\u00e9 normy pro v\u00fdrobu katalyz\u00e1tor\u016f, kter\u00e9 se zam\u011b\u0159uj\u00ed na \u00fa\u010dinnost a bezpe\u010dnost \u017eivotn\u00edho prost\u0159ed\u00ed. 11<\/a>V\u00fdrobci mus\u00ed z\u00edskat schv\u00e1len\u00ed na z\u00e1klad\u011b faktor\u016f, jako je materi\u00e1l, katalytick\u00e1 aktivita, rozm\u011bry, tepeln\u00e1 ochrana a slo\u017een\u00ed materi\u00e1lu. 11<\/a>Prvn\u00ed celoevropsk\u00e1 norma Euro 1, zaveden\u00e1 v roce 1992, na\u0159izovala katalyz\u00e1tory v nov\u00fdch automobilech a pou\u017e\u00edv\u00e1n\u00ed bezolovnat\u00e9ho benzinu. 13<\/a>Nejnov\u011bj\u0161\u00ed norma Euro 6, zaveden\u00e1 v z\u00e1\u0159\u00ed 2014, m\u00e1 n\u011bkolik verz\u00ed, p\u0159i\u010dem\u017e Euro 6d se stala povinnou v lednu 2021. 13<\/a>Normy Euro 6 vy\u017eaduj\u00ed, aby dieselov\u00e9 vozy emitovaly maxim\u00e1ln\u011b 0,08 g NOx\/km.x<\/em>zat\u00edmco u benz\u00ednov\u00fdch aut by emise nem\u011bly p\u0159ekro\u010dit 0,06 g\/km 13<\/a>V\u00fdvoj norem Euro vedl k v\u00fdznamn\u00e9mu sn\u00ed\u017een\u00ed emis\u00ed oxidu uhelnat\u00e9ho, uhlovod\u00edk\u016f, oxid\u016f dus\u00edku a pevn\u00fdch \u010d\u00e1stic. 13<\/a>EU rovn\u011b\u017e stanovila pr\u016fm\u011brn\u00e9 c\u00edle pro emise CO22 pro nov\u00e9 osobn\u00ed automobily, a to od roku 2021 na 95 gram\u016f na kilometr. 12<\/a>.<\/li>\n\n\n\n
- Typ paliva:<\/strong> Benz\u00ednov\u00e9 motory obvykle vyu\u017e\u00edvaj\u00ed t\u0159\u00edcestn\u00e9 katalyz\u00e1tory (TWC), kter\u00e9 vykon\u00e1vaj\u00ed sou\u010dasn\u011b oxida\u010dn\u00ed i reduk\u010dn\u00ed funkce, \u010dasto se dv\u011bma substr\u00e1ty pro ka\u017ed\u00fd proces. 1<\/a>Vzn\u011btov\u00e9 motory na druhou stranu b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed dvoucestn\u00e9 katalyz\u00e1tory ur\u010den\u00e9 prim\u00e1rn\u011b pro oxidaci oxidu uhelnat\u00e9ho (CO), uhlovod\u00edk\u016f (HC) a pevn\u00fdch \u010d\u00e1stic (PM), proto\u017ee jejich motory s vysok\u00fdm obsahem NOx...x<\/em>\u200bEmise vy\u017eaduj\u00ed dal\u0161\u00ed techniky, jako je recirkulace v\u00fdfukov\u00fdch plyn\u016f (EGR) a syst\u00e9my selektivn\u00ed katalytick\u00e9 redukce (SCR) 1<\/a>.<\/li>\n\n\n\n