| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an EGR pipe connection part structure capable of simplifying a structure of an exhaust system by improving a structure of a part to which an EGR pipe is connected for the exhaust system. <P>SOLUTION: An EGR pipe connection member 3 integrally formed, by casting, of an EGR pipe connection port 34a for connecting an EGR pipe 4 and flange parts 32, 33 for exhaust pipe connection is arranged on an immediately downstream side of a catalyst converter 2. Thus, spinning can be applied for working to form both ends of a catalyst case 21 in the shape of a cone by preventing an exhaust gas outlet 34a from being provided with the catalyst case 21, and the catalyst case 21 can be composed of a single part. Consequently, the number of parts for the exhaust system can be reduced and the manufacturing process and the manufacturing cost can also be reduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
