| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device improving PM collection efficiency and promoting control of exhaust emission, by guiding an exhaust gas flow to the vicinity of a filter. <P>SOLUTION: The exhaust emission control device 10 includes an exhaust gas flow guide section 14 provided upstream of a discharge electrode section 12 in an exhaust gas flow direction in an exhaust passage 15. The exhaust flow guide section 14 guides the exhaust gas flow in the exhaust passage 15 to the peripheral side of the exhaust passage 15 near to the inner wall 17 of an exhaust pipe member 11. Thereby, a flow of exhaust gas flowing in the exhaust passage 15 is guided to the peripheral side, that is, to the side of the inner wall 17 of the exhaust pipe member 11, by the exhaust gas flow guide section 14. As a result, PM charged by corona discharge in the discharge electrode section 12 flows along the inner wall 17 of the exhaust pipe member 11 and reaches a collection section 13. <P>COPYRIGHT: (C)2011,JPO&INPIT |
