Importance

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Abstract

The exhaust sound attenuation and control system includes an outer housing having an inlet pipe and an outlet pipe at opposite ends thereof. The interior of the housing includes upper, central, and lower exhaust sound attenuation elements. The exhaust gasses from the inlet pipe first enter the upper element and an upper arcuate flow guide directs the gasses leaving the upper element into the central element. A lower arcuate flow guide directs the gasses leaving the central element into the lower element. Gasses exiting the lower element are directed into the outlet pipe and exit the system. The upper element functions primarily as a muffler while the central and lower elements function as both a muffler and a resonator. The upper element includes a central elongated pipe surrounded by an outer housing. The central element includes a plurality of baffle elements. The lower element includes a plurality of baffle plates.

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First Claim