Straight through muffler with conically-ended output passage
First Claim
1. A muffler comprising:
- an outer shell having a first end cap and a second end cap;
an inlet tube passing through and supported by said first end cap; and
an outlet tube having a funnel shaped element positioned within said outer shell and facing an end of said inlet tube, said outlet tube passing through and supported by said second end cap, said funnel shaped element having an open large diameter end having a cross sectional area larger than a cross sectional area of said inlet tube.
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Accused Products
Abstract
The present invention provides a muffler which has an outlet tube with a funnel shaped element having a large diameter end positioned in an expansion chamber and conically tapering to a junction with a cylindrical neck element extending into an inlet end of an outlet tube. An inlet tube is supported by an outer shell which also supports the outlet tube. The inlet tube is attached to the outer shell by a first partition and a first end cap, forming a tuning chamber. The outlet tube is attached to the outer shell by the funnel shaped element and a second end cap, forming an outlet chamber. A space defined by the distance between the first partition and the second partition and the geometry of the outer shell forms an expansion chamber. The three different chambers serve to either tune or quiet the exhaust coming from an internal combustion engine, and the funnel shaped element serves to smooth the flow of exhaust from the inlet tube to the outlet tube.
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Citations
10 Claims
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1. A muffler comprising:
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an outer shell having a first end cap and a second end cap; an inlet tube passing through and supported by said first end cap; and an outlet tube having a funnel shaped element positioned within said outer shell and facing an end of said inlet tube, said outlet tube passing through and supported by said second end cap, said funnel shaped element having an open large diameter end having a cross sectional area larger than a cross sectional area of said inlet tube. - View Dependent Claims (2, 3, 4, 5)
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6. A muffler for an internal combustion engine, said muffler comprising:
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an outer shell having a first end cap and a second end cap; an inlet tube inserted into said first end cap, said inlet tube being connected to said outer shell by a first partition and said first end cap, said inlet tube having a plurality of perforations, a tuning chamber defined by said inlet tube, said outer shell, said first partition and said first end cap; an outlet tube having a funnel shaped element having an open large diameter end, said funnel shaped element inserted into said second end cap of said outer shell, said large diameter end of said funnel shaped element having a diameter larger than a diameter of said inlet tube, said outlet tube being connected to said outer shell by said funnel shaped element and said second end cap, said outlet tube having a plurality of perforations; an outlet chamber defined by said outlet tube, said outer shell, said funnel shaped element and said second end cap; and said funnel shaped element positioned in an expansion chamber and conically tapering to a junction with a cylindrical neck element extending into an inlet end of said outlet tube. - View Dependent Claims (7, 9, 10)
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8. A muffler for an internal combustion engine, said muffler comprising:
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an outer shell having a first end cap and a second end cap; an inlet tube inserted into said first end cap, said inlet tube being connected to said outer shell by a first partition and said first end cap, wherein said first partition and said first end cap are spaced at a distance apart of between 3 and 4 times a diameter of said inlet tube; a tuning chamber defined by said inlet tube, said outer shell, said first partition and said first end cap; an outlet having a funnel shaped element having a large diameter end, said funnel shaped element inserted into said second end cap of said outer shell, said large diameter end of said funnel shaped element having a diameter larger than said diameter of said inlet tube, said outlet tube being connected to said outer shell by said funnel shaped element and said second end cap, said outlet tube having a plurality of perforations; an outlet chamber defined by said outlet tube, said outer shell, said funnel shaped element and said second end cap; and said funnel shaped element positioned in an expansion chamber and conically tapering to a junction with a cylindrical neck element extending into an inlet end of said outlet tube.
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Specification