Exhaust sound attenuation device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11434794
APP PUB NO 20200386132A1
SERIAL NO

16433830

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Abstract

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An exhaust muffler for an internal combustion engine includes a housing. A plurality of partitions are disposed within the housing, defining a plurality of chambers. An inlet pipe and an outlet pipe are also disposed within the housing and both the inlet and outlet pipes include a perforated region. The perforated region permits fluid communication between the inlet pipe, outlet pipe and the plurality of chambers. To attenuate engine noise, the perforated regions of the inlet and outlet pipes are positioned at opposite ends of the housing, forcing the exhaust gas to pass through each of the plurality of partitions and chambers, thereby damping the sound waves with minimum effect on engine back pressure levels. Alternatively, the perforated regions of the inlet and outlet pipes may be aligned in a cross-flow chamber.

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Patent Owner(s)

Patent OwnerAddress
CATERPILLAR INC100 NE ADAMS STREET PEORIA IL 61629-9510

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bobchik, Joseph Edwards, US 2 1
Greif, Andrew Geneva, US 2 12
Hasan, Saad Naperville, US 27 110
Nathak, Subhro Peoria, US 2 3
Xiao, Peter Wuxi, CN 6 47

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