| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an exhaust device capable of suppressing leakage of an additive agent supplied into an exhaust pipe to the outside.SOLUTION: An exhaust device includes: exhaust pipes 6A, 6B constituting an exhaust passage 3 connected to an engine; and a fuel addition valve 4 for jetting fuel into the exhaust pipe 6A. At an end part of the exhaust pipe 6A, a flange part 7 is provided, and at an end part of the exhaust pipe 6B, a flange part 8 is provided. Between the flange part 7 of the exhaust pipe 6A and the flange part 8 of the exhaust pipe 6B, a gasket 9 for sealing is interposed. At the flange part 7 of the exhaust pipe 6A, an annular groove part 10 is formed, and at the flange part 8 of the exhaust pipe 6B, an annular groove part 11 is formed. In the groove parts 10, 11, electrothermal coil-shaped heaters 12 are accommodated for heating the fuel in the exhaust pipes 6A, 6B respectively.</p> |
