Muffler with variable acoustic properties
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United States of America Patent
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Feb 27, 2007
Grant Date -
Nov 4, 2004
app pub date -
Apr 27, 2004
filing date -
Apr 29, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the piston rod. Another layer of thermal insulation is provided between the closing element and the pressure cell.
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