| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable regeneration processing of only a downstream side NOx storage-reduction catalyst device, in an exhaust emission control device of an internal combustion engine having an upstream side NOx storage-reduction catalyst device and the downstream side NOx storage-reduction catalyst device. <P>SOLUTION: This exhaust emission control device has a first fuel supply means 4 supplying additional fuel supplied to a first NOx storage-reduction catalyst device 1, and a second fuel supply means 5 supplying the additional fuel between the first NOx storage-reduction catalyst device and a second NOx storage-reduction catalyst device 2. <P>COPYRIGHT: (C)2008,JPO&INPIT |
