EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINE

摘要

Disclosed is an exhaust apparatus for internal combustion engines, in which exhaust noise, the weight of the exhaust apparatus, and the production cost of the exhaust apparatus can be reduced by eliminating conventionally used sub-mufflers. An inner pipe (41) having an upstream opening end (41a) and a downstream opening end (41b) is disposed in the interior of a tail pipe (40). The upstream opening end (41a) of the inner pipe (41) protrudes outward from the interior of the tail pipe (40) and communicates with a resonance chamber (38), whereby the upstream end opening (41a) is blocked by the outer shell (31), the end plate (32), and the partition (34) of the muffler (27), which define the resonance chamber (38).