Muffler for an internal combustion engine
AssigneeKioritz Corporation
InventorsShigeru Sato, Yukio Sakaguchi, Kengo Kubo
Life of this patent
Estimating the term…
Abstract
A muffler for an internal combustion engine has an expansion chamber (31, 32) into which exhaust gas from the engine is introduced. The expansion chamber has a double wall (32A), with an inner panel (42) of the double wall (32A) having exhaust gas discharge portions (42A, 42B, 42C, 42D) with respective blowout holes (61, 62, 63, 64) for introducing the exhaust gas from the expansion chamber (32) into an air space (Sb) in the double wall (32A). From the air space (Sb), the exhaust gas is vented to the ambient through a discharge hole (37A) in an outer panel (42) of the double wall (32A ). A spark arrester screen (72) covers the discharge hole (37A).
Claims10
A muffler for an internal combustion engine comprising an expansion chamber (31, 32) having a gas inlet port (27) for admitting an exhaust gas emitted from an exhaust port of the internal combustion engine, and having an outer wall which is configured as a double wall (31A, 32A) comprising an inner panel (41, 42) and an outer panel (36, 37) spaced apart from the inner panel (41, 42) by a distance for forming an air space (Sa, Sb) therebetween;
- wherein:
- the inner panel (42) has blowout holes (61, 62, 63, 64) for introducing an exhaust gas from the expansion chamber (32) into the air space (Sb), and
- the outer panel (37) has a discharge opening (37A) for discharging the exhaust gas from the air space (Sb) to an ambient.
Dependencies are inferred from the claim text.