US 12,091,998 B2
Muffler
Martin Strähle, Wendlingen (DE); Michaela Weber, Wendlingen (DE); Jonathan Lang, Stuttgart (DE); Lukas Te-Kaat, Stuttgart (DE); Marco Jess, Esslingen (DE); Frank Sühnel, Wernau (DE); Markus Schmitt, Merchweiler (DE); Matthias Scheer, Oberthal (DE); and Harald Gerlich, Schiffweiler (DE)
Assigned to Purem GmbH, Neunkirchen (DE)
Filed by Purem GmbH, Neunkirchen (DE)
Filed on Jul. 25, 2022, as Appl. No. 17/872,817.
Claims priority of application No. 10 2021 119 216.1 (DE), filed on Jul. 26, 2021.
Prior Publication US 2023/0024144 A1, Jan. 26, 2023
Int. Cl. F01N 1/02 (2006.01); F01N 13/14 (2010.01); F01N 13/18 (2010.01)
CPC F01N 1/023 (2013.01) [F01N 13/14 (2013.01); F01N 13/1888 (2013.01); F01N 2470/02 (2013.01); F01N 2470/18 (2013.01); F01N 2490/15 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A muffler for an exhaust gas system of an internal combustion engine, the muffler comprising:
a muffler housing including two mutually connected housing shells delimiting a muffler interior, said housing shells having respective connecting edges disposed so as to be mutually adjacent and extending in a direction away from said muffler interior, said housing shells being mutually connected by material bonding in the region of said mutually adjacent connecting edges;
at least one exhaust gas inlet pipe open to said muffler interior;
at least one exhaust gas outlet pipe open to said muffler interior;
an insulating arrangement disposed in said muffler interior covering an inner side of one of said housing shells at least at regions thereof, said insulating arrangement including at least one insulating shell having an insulating shell connecting edge extending in a direction away from said muffler interior, said at least one insulating shell being arranged so as to cause said insulating shell connecting edge to be disposed between said mutually adjacent connecting edges of said housing shells, such that an exhaust gas flow volume is formed between said at least one insulating shell and an other one of said housing shells, said insulating shell being connected via material bonding to said mutually adjacent connecting edges in a region of said insulating shell connecting edge;
at least one intermediate wall subdividing said exhaust gas flow volume into a plurality of chambers, at least one intermediate wall of said at least one intermediate wall being held clamped between said at least one insulating shell and said other one of said housing shells; and,
a first pipe-receiving opening formed between said insulating shell connecting edge and the housing shell connecting edge of said other one of said housing shells, one of said exhaust gas inlet pipe and said exhaust gas outlet pipe being connected to said muffler housing in the region of said first pipe-receiving opening.