Patent ID: 7438157

Claim:
Muffler for an exhaust gas system of an internal-combustion engine of a motor vehicle, comprising: an exhaust gas inlet; a first flow pipe arranged inside the muffler and completely penetrating the muffler; a shut-off device arranged in the first flow pipe, for shutting-off and opening-up communication of the first flow pipe with an exhaust gas tail pipe which is situated downstream of the muffler and is connected with the first flow pipe; second flow pipe which partially penetrates the muffler; and an overflow path between the first and second flow pipes, inside the muffler; wherein the first and the second flow pipes are connected with the exhaust gas inlet by way of a branching element; having a front plate with branching openings forming the branching element; a catalyst housing is arranged between the exhaust gas inlet and the branching element and is fastened directly to the muffler so as to be at least partially situated inside the muffler; the shut-off device is arranged upstream of the muffler in the first flow pipe; at least one bypass section of the first flow pipe extends outside the muffler; the shut-off device is arranged in the bypass section; a housing of the muffler has a housing cutout; and the bypass section extends through the housing cutout.