Muffler for internal combustion engines
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsTakeshi Inoue, Hiroyuki Saito, Tomoyuki Takewaka, Hiroshi Funabashi
Life of this patent
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Abstract
A muffler for an internal combustion engine includes an outer box composed of a plurality of separate bodies made of a formed sound insulation material and having portions joined by an adhesive, the outer box having an inlet for introducing an exhaust gas from the internal combustion engine and an outlet for discharging the exhaust gas, and a reinforcing member mounted on the joined portions to seal and reinforce the same. The muffler is simple in construction, has a good sound insulation capability, is lightweight, and sufficiently mechanically strong.
Claims4
A muffler for an internal combustion engine comprising:
- (a) an outer box composed of separated bodies made of a formed sound insulation material and having portions joined by an adhesive, said outer box having an inlet for introducing an exhaust gas from the internal combustion engine and an outlet for discharging the exhaust gas;
- (b) a reinforcing member mounted on said joined portions to seal and reinforce the same;
- (c) an inner structural member of an iron-based material disposed in said outer box and supporting said outer box;
- (d) an exhaust pipe connected to said internal combustion engine and to said inlet;
- (e) an attachment stay mounted on said outer box;
- and
- (f) said inner structural member being connected to said attachment stay and to the exhaust pipe.
A muffler for an internal combustion engine comprising:
- (a) an outer box composed of a plurality of separate bodies made of a formed sound insulation material and having portions joined by an adhesive, said outer box having an inlet for introducing an exhaust gas from the internal combustion engine and an outlet for discharging the exhaust gas;
- (b) a reinforcing web member mounted on said joined portions to seal and reinforce the same;
- (c) said formed sound insulation material including an inner porous layer an outer tight layer;
- (d) said separate bodies having respective integral lugs projecting from upper portions of said bodies to form a hanger stay;
- and
- (e) a damping bushing extending transversely through an aperture in said lugs.
Dependencies are inferred from the claim text.