System for waste gas purification to reduce emissions of hydrocarbons during cold start of internal combustion engines

摘要

eÜen spo v v tom, e adsorb r pro uhlovod ky obsahuje sm s adsorb r z Y-zeolitu zbaven ho hlin ku s pom rem Si/Al nad 40 a zeolitu ZSM5 s pom rem Si/Al nad 20, p°i em sm s adsorb r m hmotnostn pom r obou zeolit 1:10 a 10:1, a za n za°azen katalyz tory sest vaj z oxida n ho katalyz toru s platinou a/nebo palladiem a trojcestn ho katalyz toru s platinou a/nebo palladiem a/nebo s rhodiem, p°i em oxida n katalyz tor obsahuje nejm n 3,5 g platiny a/nebo palladia na litr objemu katalyz toru. DalÜ proveden spo v v tom, e adsorb r pro uhlovod ky obsahuje sm s adsorb r z Y-zeolitu zbaven ho hlin ku, s pom rem Si/Al nad 40 a zeolitu ZSM5 s pom rem Si/Al nad 20, p°i em sm s adsorb r m hmotnostn pom r obou zeolit 1:10 a 10:1 a d le za°azen² trojcestn² katalyz tor obsahuje platinu a/nebo palladium a rhodium s nalo en m nejm n 3,5 g platiny a/nebo palladia na litr objemu katalyz toru. DalÜ proveden spo v v tom, e oxida n katalyz tor a adsorb r jsou na monolitick m/