| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixing structure capable of dispersing urea water even when an injector is equipped direct behind the bent part of an exhaust pipe.SOLUTION: A mixing structure in which an injector 3 is equipped direct behind the bent part 1a of an exhaust pipe 1 and which sprays and mixes urea water 5 into the exhaust pipe 1 by the injector 3 is configured so that a pipe diameter Dp of the exhaust pipe 1 in the downstream side from the bent part 1a is made larger than the pipe diameter De of the exhaust pipe 1 in the upstream side. |
