| 摘要 |
PROBLEM TO BE SOLVED: To provide aggregation structure of an exhaust manifold improving ease of assembly of a partition board and an aggregation part. SOLUTION: The aggregation structure of an exhaust manifold A, comprises: a plurality of branch pipes 2-5 connected with a head flange 1; the aggregation part 6 aggregating and housing exhaust gas downstream end parts 2a-5a of the branch pipes 2-5; the partition board 10 with an exhaust gas downstream end part 10a projected into the aggregation part 6; a sensor mounting boss part 9 fixed to a part of an outer periphery of the aggregation part 6 by welding X7, while the sensor mounting boss part 9 faces a mounting hole 6f formed in the aggregation part 6. Insertion holes 6g, 6h are formed in a reduced diameter part 6e of the aggregation part 6, and a part of each of end parts 10c, 10d of the partition board 10 is inserted into and positioned to each of insertion holes 6g, 6h, and are fixed to the part of the outer periphery of the aggregation part 6 by the welding X5. COPYRIGHT: (C)2008,JPO&INPIT
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