| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel addition structure which can suppress the formation of a deposit at the surroundings of an injection port of a fuel addition valve.SOLUTION: In a fuel addition structure in which a fuel addition valve 6 is attached to the middle of a horizontal part 4a (exhaust system path) of an exhaust connector 4, and fuel (refer to an arrow mark F in Fig.) is added to an exhaust gas 8 flowing in a horizontal part 4a from the fuel addition valve 6, a recessed groove 10 which is recessed toward the outside from the inside of the horizontal part 4a is formed at a position opposing the fuel addition valve 6 in the horizontal part 4a, the fuel can be injected toward the groove part 10 from the fuel addition valve 6, and a reflection face 9 is formed at the groove part 10 so as to be capable of bouncing the injected fuel to an upstream side by making the injected fuel from the fuel addition valve 6 collide with the reflection face. |
