| 摘要 |
<p>In an exhaust emission control device with NO x -occlusion reduction catalyst 5 incorporated in an exhaust passage 2,4 for reduction and purification of NO x , a fuel reforming catalyst structure 7 or plasma fuel reforming means 8 for decomposition of the fuel into H 2 and CO is arranged in the exhaust passage 2,4 upstream of the reduction catalyst 5, so that the fuel is decomposed into H 2 and CO. By such H 2 and CO, NO x on the surface of the NO x -occlusion reduction catalyst can be efficiently reduced into N 2 . Thus, high NO x reduction ratio can be always obtained irrespective of variety of operational conditions.</p> |
