US 12,188,389 B2
Method for filling silencer with sound absorbing material
Yusuke Suto, Hamamatsu (JP); Katsunori Okoshi, Hamamatsu (JP); Akihito Saito, Hamamatsu (JP); Takeshi Maruyama, Hamamatsu (JP); and Kazuyuki Shirai, Hamamatsu (JP)
Assigned to Yutaka Glken Co., Ltd., Shyizuoka (JP)
Appl. No. 18/018,155
Filed by YUTAKA GIKEN CO., LTD., Hamamatsu (JP)
PCT Filed Jul. 9, 2021, PCT No. PCT/JP2021/026010
§ 371(c)(1), (2) Date Jan. 26, 2023,
PCT Pub. No. WO2022/030184, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 2020-135333 (JP), filed on Aug. 7, 2020.
Prior Publication US 2023/0287815 A1, Sep. 14, 2023
Int. Cl. F01N 13/18 (2010.01); F01N 1/24 (2006.01)
CPC F01N 1/24 (2013.01) [F01N 13/18 (2013.01); F01N 2450/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for filling a silencer with a sound absorbing material, an inside of a shell being partitioned into a plurality of silencing chambers by a separator, at least one silencing chamber being to be filled with the sound absorbing material, the method comprising:
forming a hole at a portion corresponding to the silencing chamber to be filled with the sound absorbing material in the shell;
injecting the sound absorbing material from the hole into the silencing chamber for filling the silencing chamber with the sound absorbing material; and
sealing the hole from an outside of the shell with a hole sealing member after the filling,
wherein the hole sealing member is formed in a cup shape with a bottom that projects outside of the shell, and
wherein the hole sealing member doubles as a mounting bracket.