Patent ID: 6170604
Filing Date: 2001-01-09
Classification: F01N

Abstract:
An exhaust gas muffler for an internal combustion engine, said exhaust gas muffler comprising:a housing (2) having an inlet (16) and an outlet (17) for engine exhaust gas;said housing (2) having walls defining an interior (23) of said housing (2). said housing (2) comprised of a first housing shell (3) having a first connecting flange (15) and a second housing shell (4) having a second connecting flange (15), wherein said first and second connecting flanges (15) are fastened to one another in a common flange plane (12);said first housing shell (3) having a first bottom (13) and said second housing shell (4) having a second bottom (14);a partition (5) mounted in said housing (2) and dividing an interior of said housing (2) into two compartments;said two compartments connected by flow connections allowing passage of the engine exhaust gas between said two compartments;said partition (5) having opposed ends supported respectively on said first and second bottoms (13, 14);said partition (5) having two wall portions (30) curved outwardly in opposite directions relative to a plane of said partition (5) and having multiple openings (6a);said wall portions (30) defining a damping element (6) positioned in a flow path of the engine exhaust gas from said inlet (16) to said outlet (17);said multiple openings (6a) allowing passage of the engine exhaust gas therethrough;said wall portions (30) having edges (29) connected to said inlet (16) and delimiting a flow cross-section of said inlet (16).