| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device, improving regeneration efficiency of NOx storage reduction catalyst, and preventing degradation of fuel consumption. <P>SOLUTION: This exhaust emission control device includes: an NOx storage reduction catalyst 30 provided in the midway of an exhaust pipe 11 for circulating exhaust emission 9 from an engine 1; an oxidation catalyst 32 provided on the upstream side of the NOx storage reduction catalyst 30; a fuel-adding means 34 for adding fuel into the exhaust emission 9 on the upstream side from the oxidation catalyst 32; and a reduction agent-adding means 39 for adding a reduction agent into the exhaust emission 9 between the oxidation catalyst 32 and the NOx storage reduction catalyst 30. <P>COPYRIGHT: (C)2008,JPO&INPIT |
