Patent ID: 7533759
Filing Date: 2009-05-19
Classification: F01N,G10K

Abstract:
1. An active muffler for an exhaust system of an internal combustion engine, in particular in a motor vehicle, the active muffler comprising: a muffler body structure comprising an outer wall, said muffler body structure receiving exhaust gas, one side of said outer wall being in contact with the environment; a coupling element engaging another side of said outer wall of said muffler body structure; an antinoise generator generating antinoise such that said antinoise cancels some of the sound transported via the exhaust gas, said antinoise generator having a diaphragm drive, said diaphragm drive being connected to said coupling element such that said coupling element reduces noise generated via said antinoise generator and conducts heat generated via said antinoise generator to said outer wall.