Muffler and vehicle equipped with muffler

Details Muffler and vehicle equipped with muffler Muffler and vehicle equipped with muffler

2011-01-11

2011-01-11

San Martin, Edgardo (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S255000, C181S269000, C181S272000

Reexamination Certificate

active

07866442

ABSTRACT:
A muffler that inhibits reduction in engine performance and reduces exhaust noise volume includes a front chamber and an expansion chamber with a partition therebetween. A conduit passes through the expansion chamber. An upstream end of the conduit passes through the partition and opens in the front chamber. A partition wall is provided in a central section of the conduit. An outflow section upstream from the partition wall has a side surface in which outflow holes are formed that allow exhaust gas to flow out to the expansion chamber. An inflow section downstream from the partition wall has a side surface formed with inflow holes that allow exhaust gas to flow in from the expansion chamber.

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