Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1999-06-25
2000-12-12
Nappi, Robert E.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181247, 181249, 181269, F01N 100
Patent
active
061585467
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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Hanson Roger D.
Sterrett Dale E.
Martin Edgardo San
Nappi Robert E.
Tenneco Automotive Inc.
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