Muffler for internal combustion motor vehicles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jul 21, 2005
app pub date -
Jan 14, 2005
filing date -
Jan 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A muffler has a housing provided with irregularly arranged ridges computed by an FEM computer program. The ridges are regularly bounded, simple geometric figures, such as circles, circular rings, circular ring segments, rectangles or trapezoids. The size and position of the ridges are selected in such a way that the lowest resonance frequency of the muffler housing is greater than or equal to the dominant excitation frequency of the internal combustion engine over its entire rpm range.
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Family
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Cited Art Landscape
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