| 摘要 |
<p>An exhaust manifold collecting part connection structure, comprising the collecting tube (4) for the branched tubes (2) connected to an exhaust tube (14) of the exhaust manifold (1) of a multi-cylinder internal combustion engine through a spherical joint (17), the collecting tube (4) formed in a double tube further comprising a collecting tube body (5) and an outer tube (6) covering the outer periphery thereof, wherein an annular space part (C) is formed therebetween, and the collecting tube body (5), outer tube (6), and the tubular fitted part (8f) of the flange (8) of the spherical joint (7) fitted to the outer tube (6) are connected integrally with each other by welding (W), whereby the number of production processes and the number of parts can be reduced to reduce the cost of the exhaust manifold collecting part connection structure.</p> |
