# US 12,006,854 B2 · Vehicle exhaust system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,006,854 B2 - Document ID: US12006854B2 - Status: Granted - Kind: B2 - Application number: 18/115,252 - Filed: 2023-02-28 - Published: 2023-06-29 - Granted: 2024-06-11 - Earliest claimed: 2019-06-17 - Assignees: Tenneco Automotive Operating Company Inc. - Applicants: Tenneco Automotive Operating Company Inc. - Inventors: Michael A Golin; Gabriel Ostromecki - Web page: https://patentgrep.com/patent/US12006854B2 ## CPC - F01N 1/003: {by using dead chambers communicating with exhaust gas flow passages} - F01N 13/08: Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)} - F01N 13/04: having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract A vehicle exhaust system includes a tubular component defining a primary exhaust gas flow path with a primary exhaust gas outlet. At least one opening is defined by the tubular component and extends through an inner surface and an outer surface of the tubular component. A plate is disposed on the outer surface of tubular component and covers the at least one opening. A secondary exhaust gas flow path is defined by the at least one opening in the tubular component, through a plurality of elongated flow channels, and through the outlet opening defined by the plate. The exhaust gases flowing through the secondary exhaust gas flow path are exhausted to atmosphere in a different location than the primary outlet. ## Claims ### Claim 1 A vehicle exhaust system comprising: a tubular component having an inner surface and an outer surface and extending along a central axis from an inlet end to an outlet end and defining a primary exhaust gas flow path for exhaust gases in a first direction from the inlet end toward the outlet end; the outlet end defining a primary outlet for the exhaust gases from the tubular component to atmosphere; at least one opening defined by the tubular component, wherein the at least one opening extends through the inner surface and the outer surface; and a first plate disposed on the outer surface of the tubular component and covering the at least one opening; a second plate defining—an elongated flow—channel extending away from the at least one opening and adapted to receive exhaust gases from the at least one opening, the first plate at least partially defining an outlet opening adapted to receive exhaust gases from the flow channel; wherein a secondary exhaust gas flow path is defined by the at least one opening in the tubular component, through the —elongated flow channel, and through the outlet opening at least partially defined by the first plate; wherein exhaust gases flowing through the secondary exhaust gas flow path are exhausted to atmosphere in a different location than the primary outlet. ### Claim 2 (depends on 1) The vehicle exhaust system of claim 1, wherein the exhaust gases entering the elongated flow channel is remotely located from the exhaust gases exiting the elongated flow channel. ### Claim 3 (depends on 1) The vehicle exhaust system of claim 1, wherein the flow channel comprises a plurality of parallel flow paths within the channel. ### Claim 4 (depends on 1) The vehicle exhaust system of claim 1, wherein the secondary exhaust gas flow path through the elongated flow channel comprises exhaust gas flowing out of the tubular component through the at least one opening and into the elongated flow channel in a first direction and flowing in a second direction, opposite the first direction, and flowing through the outlet opening defined by the plate. ### Claim 5 (depends on 1) The vehicle exhaust system of claim 1, wherein the first plate at least partially covers the second plate. ### Claim 6 (depends on 1) The vehicle exhaust system of claim 1, wherein the outlet opening is positioned upstream of the at least one opening in the tubular component. ### Claim 7 (depends on 1) The vehicle exhaust system of claim 1, wherein the elongated flow channel imparts at least one directional change to the exhaust gases. ### Claim 8 (depends on 7) The vehicle exhaust system of claim 7, wherein the elongated flow channel imparts at least two directional changes to the exhaust gases. ### Claim 9 (depends on 1) The vehicle exhaust system of claim 1, wherein the elongated flow channel is defined by a slot in the second plate. ### Claim 10 A vehicle exhaust system comprising: a tubular component having an inner surface and an outer surface and extending along a central axis from an inlet end to an outlet end and defining a primary exhaust gas flow path for exhaust gases in a first direction from the inlet end toward the outlet end; the outlet end defining a primary outlet for the exhaust gases from the tubular component to atmosphere; at least one opening defined by the tubular component, wherein the at least one opening extends through the inner surface and the outer surface; a first plate disposed on the tubular component, the first plate comprising an elongated flow channel defined by a slot in the first plate and adapted to receive exhaust gases from the at least one opening; a second plate separate from the first plate and covering the elongated flow channel and comprising at least one outlet opening positioned remote from the at least one opening in the tubular component and adapted to receive exhaust gases from the elongated flow channel; and wherein a secondary exhaust gas flow path is defined by the at least one opening in the tubular component, through the flow channel, and through the outlet opening defined by the second plate; wherein exhaust gases flowing through the secondary exhaust gas flow path are exhausted to atmosphere in a different location than the primary outlet. ### Claim 11 (depends on 10) The vehicle exhaust system of claim 10, wherein the exhaust gases entering the flow channel are remotely located from the exhaust gases exiting the flow channel. ### Claim 12 (depends on 10) The vehicle exhaust system of claim 10, wherein the flow channel comprises a plurality of parallel flow paths. ### Claim 13 (depends on 10) The vehicle exhaust system of claim 10, wherein the secondary exhaust gas flow path through the flow channel comprises exhaust gas flowing out of the tubular component through the at least one opening and into the flow channel in a first direction and flowing in a second direction, opposite the first direction, and flowing through the outlet opening defined by the second plate. ### Claim 14 (depends on 10) The vehicle exhaust system of claim 10, wherein the flow channel imparts at least one directional change to the exhaust gases. ### Claim 15 (depends on 14) The vehicle exhaust system of claim 14, wherein the flow channel imparts at least two directional changes to the exhaust gases. ### Claim 16 (depends on 15) The vehicle exhaust system of claim 15, wherein the exhaust gases are exhausted to atmosphere in a different location than the primary exhaust gases. ### Claim 17 A vehicle exhaust system comprising: a tubular component having an inner surface and an outer surface and extending along a central axis from an inlet end to an outlet end and defining a primary exhaust gas flow path for exhaust gases in a first direction from the inlet end toward the outlet end; the outlet end defining a primary outlet for the exhaust gases from the tubular component to atmosphere; at least one opening defined by the tubular component, wherein the at least one opening extends through the inner surface and the outer surface; and a first plate disposed on the outer surface of the tubular component and covering the at least one opening; a second plate defining an elongated flow channel defined by a slot in the second plate and extending away from the at least one opening, the first plate adapted to receive exhaust gases from the at least one opening and at least partially defining an outlet opening adapted to receive exhaust gases from the flow channel; wherein a secondary exhaust gas flow path is defined by the at least one opening in the tubular component, through the elongated flow channel, and through the outlet opening at least partially defined by the first plate; wherein exhaust gases flowing through the secondary exhaust gas flow path are exhausted to atmosphere in a different location than the primary outlet. ### Claim 18 (depends on 17) The vehicle exhaust system of claim 17, wherein the exhaust gases entering the elongated flow channel is remotely located from the exhaust gases exiting the elongated flow channel. ### Claim 19 (depends on 17) The vehicle exhaust system of claim 17, wherein the flow channel comprises a plurality of parallel flow paths within the channel. ### Claim 20 (depends on 17) The vehicle exhaust system of claim 17, wherein the secondary exhaust gas flow path through the elongated flow channel comprises exhaust gas flowing out of the tubular component through the at least one opening and into the elongated flow channel in a first direction and flowing in a second direction, opposite the first direction, and flowing through the outlet opening defined by the plate. ### Claim 21 (depends on 17) The vehicle exhaust system of claim 17, wherein the first plate at least partially covers the second plate. ### Claim 22 (depends on 17) The vehicle exhaust system of claim 17, wherein the outlet opening is positioned upstream of the at least one opening in the tubular component. ### Claim 23 (depends on 17) The vehicle exhaust system of claim 17, wherein the elongated flow channel imparts at least one directional change to the exhaust gases. ### Claim 24 (depends on 23) The vehicle exhaust system of claim 23, wherein the elongated flow channel imparts at least two directional changes to the exhaust gases.