| 摘要 |
<p>The arrangement (1) has a catalyst combination composed of a first SCR catalyst (5), an NH3-oxidation catalyst (6) located downstream of the first SCR catalyst, and a second SCR catalyst (7) located downstream of the NH3-oxidation catalyst. Ammonia and or ammonia-containing reduction agent is added to an exhaust gas stream upstream of the catalyst combination so that a mixture of exhaust gas and ammonia is present upstream of the first SCR catalyst. A dozer is provided with the arrangement (2) An independent claim is included for a method of producing the catalyst.</p> |
