| 摘要 |
<P>PROBLEM TO BE SOLVED: To propose a diffuser for a reducing agent having a structure that hardly causes generation of deposits in comparison with a conventional one. <P>SOLUTION: In a diffuser 10, a reduction catalyst is arranged in an exhaust system of an engine, and the diffuser is used in an exhaust emission control device injecting the reducing agent from a nozzle into exhaust in an upstream side than the reduction catalyst. The diffuser includes a tube part 11 with an outer diameter smaller than an inner diameter of an exhaust pipe 4 in an upstream side of the reduction catalyst, using one of both end openings as an exhaust inlet 11in, and using the other as an exhaust outlet 11out; and a diffusion part 12 provided in the tube part 11 away from the inlet 11in, and stirring up the exhaust flowing in the tube part. The diffuser is installed in the exhaust pipe by connecting an inlet side end portion 11a of the tube part 11 to the exhaust pipe 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
