| 摘要 |
PROBLEM TO BE SOLVED: To perform uniform inflow of exhaust from a front end surface of an exhaust purification catalyst over the whole front end surface without shifting a position of the exhaust purification catalyst to a downstream side of the flow of the exhaust. SOLUTION: An extended part which is obtained by extending a downstream port 4 of an exhaust pipe 2 is deviated toward a front side of an automobile from the front end surface of the exhaust purification catalyst 5, and therefore, a center axis C1 of the exhaust pipe 2 is erected with respect to a center axis C2 of the exhaust purification catalyst 5, and shifting of the exhaust emission control catalyst 5 toward a rear side of the automobile is not required. Further, the exhaust entering an exhaust guide part 6 from the downstream port 4 of the exhaust pipe 2 is abutted on a lower inner surface of the exhaust guide part 6 and is divided into the rear side and the front side of the automobile, and the exhaust divided to the rear side flows into the catalyst 5 from a lower half of the front end surface of the exhaust purification catalyst 5. The exhaust divided to the front side flows forward along an inner surface of an expansion part 7 of the exhaust guide part 6, and changes its direction to the upper side and the rear side by the inner surface, and flows into the catalyst 5 from an upper half of the front end surface of the exhaust purification catalyst 5. COPYRIGHT: (C)2011,JPO&INPIT |
