US 11,655,741 B2
Muffler for engine
Tsukasa Minato, Saitama (JP); Masayuki Hara, Saitama (JP); Noriyoshi Sasaki, Saitama (JP); and Nobuhiro Saitou, Saitama (JP)
Assigned to Marelli Corporation, Saitama (JP)
Appl. No. 17/56,493
Filed by Marelli Corporation, Saitama (JP)
PCT Filed Mar. 28, 2019, PCT No. PCT/JP2019/013577
§ 371(c)(1), (2) Date Nov. 18, 2020,
PCT Pub. No. WO2019/225149, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. JP2018-097581 (JP), filed on May 22, 2018.
Prior Publication US 2021/0199035 A1, Jul. 1, 2021
Int. Cl. F01N 1/02 (2006.01); F01N 13/18 (2010.01); G10K 11/16 (2006.01)
CPC F01N 1/026 (2013.01) [F01N 13/1805 (2013.01); F01N 13/1838 (2013.01); G10K 11/161 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A muffler for an engine, comprising:
a shell that defines a muffler body having a flat profile and an inner space divided into a plurality of chambers by a partition wall with a flange portion in tight contact with an inner surface of the shell;
a reinforcing plate in rectangular shape at a position on an outer surface of the shell facing the flange portion of the partition wall;
a pair of spot welds on opposing sides of a longitudinal axis of the reinforcing plate welding the reinforcing plate to the shell; and
a plug weld positioned between the pair of spot welds welding the reinforcing plate, the flange portion, and the shell.