Silencer provided on exhaust pipe of vehicle engine

Details Silencer provided on exhaust pipe of vehicle engine Silencer provided on exhaust pipe of vehicle engine

2010-07-21

2011-12-27

Martin, Edgardo San (Department: 2832)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S252000, C181S267000

Reexamination Certificate

active

08083025

ABSTRACT:
A silencer includes an inner cylinder that is connected to an exhaust pipe and a partition cylinder that is accommodated in a housing and that sections an expansion chamber in the housing. A group of partition-cylinder small holes is formed in the partition cylinder, and a group of inner-cylinder small holes is formed in the inner cylinder. The group of partition-cylinder small holes and the group of inner-cylinder small holes do not overlap each other in an axial direction, and are separated from each other by a predetermined distance in the axial direction.

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