Noise attenuation device for a vehicle exhaust system

Details Noise attenuation device for a vehicle exhaust system Noise attenuation device for a vehicle exhaust system

2006-08-08

2006-08-08

San Martin, Edgardo (Department: 2837)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C123S184210, C123S184530, C123S590000

Reexamination Certificate

active

07086498

ABSTRACT:
A noise attenuation device for a vehicle exhaust system is provided. The device includes an exhaust pipe having a passageway for receiving exhaust gas pulses from an engine. The device further includes a plurality of vanes extending from an inner surface of the passageway and spaced apart from one another and disposed upstream of a discontinuity in the exhaust pipe. The vanes reduce turbulence in the exhaust gas pulses flowing past the vanes to reduce noise at the exhaust pipe discontinuity.

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