| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of injecting an additive to the entire end face of an exhaust purification catalyst while suppressing a pressure loss in exhaust gas. <P>SOLUTION: The exhaust emission control device includes: an exhaust passage 34 connected to an exhaust port of an engine; an exhaust purification catalyst disposed in the exhaust passage; an injector 35 injecting an additive to supply the additive to the exhaust purification catalyst; and an additive passing part where the additive injected by the injector passes. The additive passing part includes a spiral groove 51 that revolves from at least a position opposing to an injection hole 47 of the injector toward the exhaust purification catalyst; and the additive injected by the injector revolves along the spiral groove. <P>COPYRIGHT: (C)2013,JPO&INPIT |
