Exhaust silencing device

Details Exhaust silencing device Exhaust silencing device

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 1/08 (2006.01) F01N 13/08 (2010.01) F01N 13/18 (2010.01) F01N 1/00 (2006.01) F01N 1/24 (2006.01) F01N 7/08 (2006.01) F01N 7/18 (2006.01)

Patent

CA 2154720

In an exhaust silencing device comprising inner tubes which is connected to an exhaust pipe connected to an engine and provided with a plurality of through holes, and an outer tube which covers the inner tubes, the occurrence of a whistling sound is prevented while avoiding the use of a sound absorbing material. Irregularities are provided on the inner surface of the inner tube which, together with the outer tube, forms an annular expansion chamber.

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