US 11,698,008 B2
Exhaust device
Abdulhadi Madi, East Lansing, MI (US); Jason C. Johnson, Brighton, MI (US); Manoj Kumar Sampath, Ann Arbor, MI (US); and Prajwal Hanumantha Rao, Jackson, MI (US)
Assigned to Tenneco Automotive Operating Company Inc., Lake Forest, IL (US)
Filed by Tenneco Automotive Operating Company Inc., Lake Forest, IL (US)
Filed on Feb. 14, 2020, as Appl. No. 16/791,056.
Prior Publication US 2020/0182111 A1, Jun. 11, 2020
Int. Cl. F01N 1/02 (2006.01); F01N 3/28 (2006.01); G10K 11/172 (2006.01); G10K 11/162 (2006.01); F01N 1/04 (2006.01)
CPC F01N 1/023 (2013.01) [F01N 1/04 (2013.01); F01N 3/2803 (2013.01); F01N 3/2853 (2013.01); G10K 11/162 (2013.01); G10K 11/172 (2013.01); F01N 2230/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An exhaust device comprising:
an outer shell;
an inlet extending from the outer shell and receiving exhaust gas;
an outlet extending from the outer shell;
an inner shell received within the outer shell, the inner shell defining an inner volume, a plurality of first circumferential openings therethrough fluidly communicating the inlet with the inner volume, and a plurality of second circumferential openings therethrough fluidly communicating the outlet with the inner volume;
a pair of partition walls disposed between the inner shell and the outer shell, wherein the pair of partition walls, the inner shell and the outer shell define a Helmholtz chamber therebetween, wherein the pair of partition walls seal the Helmholtz chamber from the inlet and the outlet; and
a Helmholtz neck comprising a cylindrical wall defining a tube disposed on the inner shell, the Helmholtz neck comprising an elbow having a first end extending axially within the inner shell and a second end extending radially toward the Helmholtz chamber, the Helmholtz neck fluidly communicating the inner volume with the Helmholtz chamber;
wherein the inner shell is radially offset from the outer shell by an annular gap.