Structure of an exhaust manifold branch collecting portion
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United States of America Patent
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Jul 19, 2005
Grant Date -
Oct 2, 2003
app pub date -
Mar 25, 2003
filing date -
Mar 27, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A structure of an exhaust manifold branch collecting portion includes a double collecting pipe 21 for collecting a plurality of exhaust openings 11A, 17A. The double collecting pipe 21 is comprised of an inner pipe 21-1 and an outer pipe 21-2, which are connected integrally to each other. In a space formed between the inner pipe 21-1, the outer pipe 21-2, and a ring-shaped stainless steel cushion member 22-2, a tubular cushion member 22-1, which is thermally expanded and foamed, is arranged as a restricted cushion structure.
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