Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2004-08-17
2008-09-23
San Martin, Edgardo (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S251000, C181S269000, C181S275000, C181S255000, C060S313000, C060S322000, C060S323000, C060S324000
Reexamination Certificate
active
07426980
ABSTRACT:
An exhaust system for an internal combustion engine having two banks of cylinders by which pulses of exhaust gas are alternately directed to a diverter subassembly. The diverter subassembly, which is located in the muffler, includes a perforated gas decelerator chamber which divides each pulse of exhaust gas between two exhaust outlets and causes a low pressure wave to occur in the exhaust system to enhance scavenging of a subsequent pulse of exhaust gas and thereby improve engine performance and mileage. The muffler further includes one or more cores and may or may not include a dead air space chamber to provide attenuation and tonal balance to the exiting exhaust gas.
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Bassani Darryl C.
Martin Edgardo San
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