公开(公告)号：US11702969B2

公开(公告)日：2023-07-18

申请号：US17746358

申请日：2022-05-17

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Keith Bartu ,  Jeremy Popovich ,  Brett Herwat ,  Gabriel Ostromecki

IPC: F01N1/08 ,  F01N1/00 ,  F01N1/02 ,  G10K11/16 ,  G10K11/172

CPC classification number: F01N1/083 ,  F01N1/003 ,  F01N1/006 ,  F01N1/02 ,  F01N1/023 ,  G10K11/161 ,  G10K11/172 ,  F01N2210/04 ,  F01N2470/14 ,  F01N2470/18 ,  F01N2490/10 ,  F01N2490/15

Abstract: A muffler for receiving exhaust gas from a combustion engine comprises a shell, first and second inlet pipes each having outlets providing exhaust gas to a mixing chamber within the shell, a first chamber and a second chamber positioned within the shell and a pair of communication pipes each including an inlet receiving exhaust gas from the mixing chamber. Each communication pipe includes an outlet providing exhaust to the second chamber. Each of the communication pipes further includes a Helmholtz opening positioned downstream of the mixing chamber. The Helmholtz openings are open to the first chamber.

公开(公告)号：US11365658B2

公开(公告)日：2022-06-21

申请号：US16119011

申请日：2018-08-31

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Gabriel Ostromecki ,  Keith Bartu ,  Jeremy Popovich ,  Brett Herwat

IPC: F01N1/08 ,  G10K11/16 ,  F01N1/02 ,  F01N1/00 ,  G10K11/172

Abstract: A muffler may include a shell, first and second baffles, an inlet pipe, first and second outlet pipes, and a communication pipe. The first and second baffles cooperate with the shell to define first, second and third chambers. The first inlet pipe may extend through the shell and may provide exhaust gas to at least one of the first and second chambers. Exhaust gas in the first chamber exits the muffler through the first outlet pipe. Exhaust gas in the second chamber exits the muffler through the second outlet pipe. The communication pipe may include first, second and third openings. The first opening is in communication with the first chamber. The second opening is in communication with the second chamber. The third opening is in communication with the third chamber. The first and second chambers may be in communication with the third chamber through the communication pipe.