MUFFLER CUTTER - NICHIAS CORP

Title:

MUFFLER CUTTER

Document Type and Number:

WIPO Patent Application WO/2014/171380

Kind Code:

A1

Abstract:

Provided is a muffler cutter having excellent heat-insulating and sound-damping properties, and capable of improving the quality of the exhaust sound. This muffler cutter (1), which is mounted on a tail pipe in a vehicle exhaust system, is characterized by being equipped with an exhaust pipe (2) in the side wall of which multiple through-holes are provided, a cylindrical heat shield plate (3) provided on the outside of and coaxial with the exhaust pipe, and a sound-absorbent, heat-insulating material (4) arranged in the interval between the exhaust pipe and the cylindrical heat shield plate, with the sound-absorbent, heat-insulating material filling only a portion of the interval between the exhaust pipe and the cylindrical heat shield plate in a curved shape, and a curved closed space (S) being formed in the other portion of the interval between the exhaust pipe and the cylindrical heat shield plate, and the distance between the exhaust pipe and the cylindrical heat shield plate forming the closed space being 1-50 mm.

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Inventors:

HIRAOKA AKINAO (JP)
ABE ISAMI (JP)
FUJITA YOSHIFUMI (JP)

Application Number:

PCT/JP2014/060314

Publication Date:

October 23, 2014

Filing Date:

April 09, 2014

Export Citation:

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Assignee:

NICHIAS CORP (JP)

International Classes:

F01N1/10; F01N13/14; F01N13/20

Foreign References:

JP2002256840A	2002-09-11
JPH0239533U	1990-03-16
JP2008106630A	2008-05-08
US6267199B1	2001-07-31
US20040206573A1	2004-10-21
JP2005054587A	2005-03-03
JP2008190371A	2008-08-21

Other References: