Passive throttling valve outside of muffler
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United States of America Patent
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N/A
Issued Date -
Apr 10, 2008
app pub date -
Oct 6, 2006
filing date -
Oct 6, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An exhaust system includes an exhaust tube for conveying a heated exhaust flow from an engine. A valve is mounted at least partially within the exhaust tube for noise attenuation. The valve includes a bias member mounted outside of the engine exhaust tube within a heat transfer environment to maintain the bias member at a low temperature. The bias member biases the valve against the heat exhaust flow toward a predetermined position. The valve is mounted within a section of the tube having a smaller cross-sectional area and pivots into a larger cross-sectional area section of the exhaust tube to avoid interference with tube walls and provide a relatively large range of movement.
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