| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of improving fuel economy. <P>SOLUTION: This exhaust emission control device comprises a particulate filter 13 incorporated in the exhaust pipe 11 of a diesel engine 1 and a control device 20 performing fuel-post injection at a timing when a fuel after the main injection thereof is not ignited. The control device 20 comprises a function for interrupting post injection based on a relation between the bed temperature of the particulate filter 13 and the integrated injection amount of the fuel by the post injection. After the start of the post injection, when the further rise of the floor bed temperature of the particulate filter 13 cannot be expected, the control device 20 interrupts the post injection. Accordingly, the fuel economy of the diesel engine can be improved. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
