| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent lowering in the purifying performance of a particulate filter, in an exhaust emission control device for an internal combustion engine equipped with the particulate filter supported by an NOx occluded agent. <P>SOLUTION: In this exhaust emission control device for the internal combustion engine equipped with the particulate filter supported by the NOx occluded agent, a pre-catalyst wherein an oxidation catalyst 212 is supported on a supporting layer 211 made from titania or silica is disposed upstream from the particulate filter. Clogging of the particulate filter is prevented, while SOx poisoning of the pre-catalyst is also prevented. <P>COPYRIGHT: (C)2004,JPO</p> |
