| 摘要 |
A dual pipe exhaust manifold includes an inner pipe, an outer pipe and a plurality of spacers. The inner pipe includes a plurality of branch pipes and a plurality of collector pipes. The collector pipes are slidably connected to each other. One end of each of the branch pipe is fixed to a flange section configured and arranged to be attached to a cylinder head of an engine, and the other end of each of the branch pipe is slidably connected to a corresponding one of the collector pipes so that each of the collector pipes is connected to a plural number of the branch pipes. The outer pipe covers a circumference of the inner pipe. The spacers are disposed between the outer pipe and the inner pipe to form a gap therebetween.
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