| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of avoiding the lowerin of a control quantity and deterioration in an electrode needle by restraining the generation of arc discharge, in the exhaust emission control device for controlling particulates in exhaust gas by corona discharge. SOLUTION: The exhaust emission control device controls the particulate (PM) in the exhaust gas by performing the corona discharge in an exhaust passage 11 of an internal combustion engine, and includes the electrode needle 212a arranged in the exhaust passage 11 and performing the corona discharge, a conductive member 211 for supplying electric power to the electrode needle 212a, and an insulator member 22 (insulating holding member) installed in an exhaust pipe 42 and holding the conductive member 211 in an electrically insulated state to the exhaust pipe 42. A resistor 211d becoming electric resistance larger than electric resistance generated by the conductive member 211 is arranged in a part positioned at the electrode needle 212a side more than the insulator member 22 in an electric power supply passage by the conductive member 211. COPYRIGHT: (C)2011,JPO&INPIT |
