Patent ID: 6942061
Filing Date: 2005-09-13
Classification: F01N

Abstract:
1. A muffler for an internal combustion engine having an exhaust, comprising a hollow housing having top, bottom and opposite side walls and first and second opposite ends, and a transverse centerplane, a central post of substantially round transverse cross-section disposed within said housing at a location substantially equidistant between said opposite side walls and substantially equidistant said first and second opposite ends of said housing, a first elongated tubular member mounted within said housing adjacent said central post and on that side of said post facing said first end of said housing, said tubular member being bent along its length and with the inside of said bend facing the outer circumference of said central post, a second elongated tubular member mounted within said housing adjacent said central post and on that side of said post facing said second end of said housing, said tubular member being bent along its length and with the inside of said bend facing the outer circumference of said central post, first and second end plates sealingly closing respective ones of said first and second opposite ends of said housing fluid tight, at least one port defined in one of said first and second end plates for establishing fluid flow communication between the interior of said housing and an ambient conduit leading from the exhaust of the engine and at least one port defined in one of said first and second end plates for establishing fluid flow communication between the interior of said housing and the ambient environment.