公开(公告)号：US10180093B2

公开(公告)日：2019-01-15

申请号：US15402880

申请日：2017-01-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles D. Rusher ,  Roger C. Barlow, Jr. ,  Scott M. Reilly

IPC: F01N1/16 ,  F01N1/00

Abstract: A selectively tunable exhaust noise attenuation device includes a body having an outer surface and an inner surface that defines an exhaust volume. An inlet is coupled to the body and fluidically connected to the exhaust volume. A first outlet is coupled to the body and fluidically connected to the inlet and selectively fluidically connected to the exhaust volume and a second outlet coupled to the body and fluidically connected to the exhaust volume. A first conduit including a primary exhaust gas flow path directly fluidically connects the inlet and the first outlet. A second conduit includes a first end and a second. The second conduit defines a secondary exhaust gas flow path. A valve is fluidically connected to one of the first and second conduits. The valve is arranged laterally off-set of the primary exhaust gas flow path.

公开(公告)号：US20170298793A1

公开(公告)日：2017-10-19

申请号：US15402880

申请日：2017-01-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles D. Rusher ,  Roger C. Barlow, JR. ,  Scott M. Reilly

IPC: F01N1/16

CPC classification number: F01N1/165 ,  F01N1/006 ,  F01N1/026 ,  F01N1/163 ,  F01N1/166 ,  F01N1/168

Abstract: A selectively tunable exhaust noise attenuation device includes a body having an outer surface and an inner surface that defines an exhaust volume. An inlet is coupled to the body and fluidically connected to the exhaust volume. A first outlet is coupled to the body and fluidically connected to the inlet and selectively fluidically connected to the exhaust volume and a second outlet coupled to the body and fluidically connected to the exhaust volume. A first conduit including a primary exhaust gas flow path directly fluidically connects the inlet and the first outlet. A second conduit includes a first end and a second. The second conduit defines a secondary exhaust gas flow path. A valve is fluidically connected to one of the first and second conduits. The valve is arranged laterally off-set of the primary exhaust gas flow path.