Patent ID: 7854297
Filing Date: 2010-12-21
Classification: F01N,F41A

Abstract:
1. A muffler for a vehicle exhaust system having a combustion chamber and a pipe, the vehicle exhaust system being configured to release combustion gasses generated in the combustion chamber, the muffler comprising: a proximal end and a distal end, the proximal end being configured for mounting the muffler to an engine exhaust pipe and including an entry opening, the distal end including a discharge opening configured to allow the combustion gasses to pass therethrough, and defining a exhausting gas path therebetween; an inner cylindrical wall disposed about the exhausting gas path; an outer housing disposed concentrically about the inner cylindrical wall; an expansion chamber formed by the inner cylindrical wall, the outer housing, the proximal end and the distal end of the muffler; and at least one vortex chamber disposed between the proximal end and the distal end, the at least one vortex chamber including: wherein the circular peripheral wall is operative to induce a vortex on at least a portion of the combustion gasses expelled from the combustion chamber during engine operation, the vortex impeding flow of the combustion gasses from the pipe such that the acoustic energy associated with the release of the combustion gasses is dissipated.