Muffler apparatus and method for making same

Details Muffler apparatus and method for making same Muffler apparatus and method for making same

F - Mech Eng,Light,Heat,Weapons

01

N

26/151, 172/30

F01N 1/02 (2006.01) F01N 13/18 (2010.01) B21D 41/04 (2006.01) F01N 1/08 (2006.01)

Patent

CA 1237083

Abstract The present invention is directed to muffler apparatus and a method for making same. The apparatus inclu- des inlet and outlet tubes with a plurality of baffles extending from the inlet and outlet tubes to a housing. The outlet tube has a constricted portion near its inlet end formed with creases and lobes and a flare at the end. Such constriction increases the housing to outlet tube area ratio of the muffler which results in advantageous attenuation characteristics. The process for making the muffler is simpler than known methods since the outlet tube is formed and baffles pressed onto it in a single step.

482421

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