| 摘要 |
PROBLEM TO BE SOLVED: To provide a lower-cost exhaust treatment device for purifying exhaust gas from an internal combustion engine using a catalyst to be heated by a catalyst support to be energized to generate heat and for returning part of the exhaust gas after purified to the internal combustion engine.SOLUTION: A cooling member 24 is provided in an exhaust pipe 16 ranging from an engine 14 to an upstream catalyst converter 18, and a circulation pipeline 30 is branched from between the upstream catalyst converter 18 and a vibration interrupting member 26 on the downstream side. |
