| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the fear of the leakage of an air-fuel mixture by permitting sufficient soldering even at complex mating parts where upper and lower plenum chamber component members and a branch pipe meet. SOLUTION: A plurality of intake outlet forming recessed arc portions 5, 6 are provided at intervals to each other on the edges of two chamber component members 1, 2. The chamber component members 1, 2 hold their respective recessed arc portions 5, 6 in a vertically opposite condition and, using an approximately plate-shaped soldering member 18 and a ring-shaped soldering member 19 attached to the rear end of a branch pipe 8B, the rear end of the branch pipe 8B is soldered in a single operation to an intake outlet formed by the opposite intake outlet forming recessed arc portions 5, 6, the approximately plate-shaped soldering member 18 having an extension 14, a ring-shaped soldering member positioning step part 15, a raised outer edge part 16, and a raised inner edge part 17.
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