Exhaust silencer device
AssigneesToyota Jidosha Kabushiki Kaisha, Futaba Industrial Co., Ltd.
InventorsTaiki Teramoto, Takato Ishihata, Takehiro Miura, Akira Yamamoto
Life of this patent
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Abstract
An exhaust silencer device which is interposed in an exhaust passage in a vehicle to reduce exhaust noise comprises a sub-muffler which is interposed in the exhaust passage and has an expansion chamber formed therein; an inlet pipe which is airtightly inserted through an inlet opening of the sub-muffler; and an outlet pipe which is airtightly inserted through an outlet opening of the sub-muffler, wherein the inlet pipe and the outlet pipe are formed with openings (small apertures, non-joined portions) only in their upper half area and their lower half area is sealed without having the openings.
Claims7
An exhaust silencer device which is interposed in an exhaust passage in a vehicle to reduce exhaust noise, the exhaust silencer device comprising:
- a muffler which is interposed in the exhaust passage and has an expansion chamber formed therein;
- an inlet pipe which is airtightly inserted through an inlet opening of the muffler and extends into the expansion chamber, a peripheral surface of the inlet pipe having one or more apertures;
- and
- an outlet pipe which is airtightly inserted through an outlet opening of the muffler and extends into the expansion chamber, a peripheral surface of the outlet pipe having one or more apertures, wherein the apertures of the inlet pipe and of the outlet pipe are disposed only in upper half areas of the inlet and outlet pipes, and lower half areas of the inlet and outlet pipes are solid and have no apertures therein.
Dependencies are inferred from the claim text.