| 摘要 |
An exhaust emission control device is provided which can effectively regenerate a NOx absorption reduction catalyst even in a relatively low temperature region to improve NOx reduction ratio while minimizing deterioration of fuel economy. Incorporated in an exhaust pipe 4 through which exhaust gas 3 discharged from a diesel engine 1 via an exhaust manifold 2 flows is a reformer 8 having a fuel adding device 5, a heater 6 and a reforming catalyst 7. Arranged downstream of the reformer is a NOx absorption reduction catalyst 9. |
