Exhaust assembly

Patent metadata

Field	Value
Publication number	US-12173633-B2
Application number	US-202217965031-A
Country	US
Kind code	B2
Filing date	Oct 13, 2022
Priority date	Oct 14, 2021
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

An exhaust assembly includes a first tailpipe having an exit end and a curved portion along at least a portion of a length of the first tailpipe. The exhaust assembly further includes a baffle surrounding the first tailpipe at the exit end and defining a plurality of perforations therethrough. The exhaust assembly further includes a pair of shields. Each shield is attached to and at least partially surrounds each of the baffle and the first tailpipe. Each shield extends from a first end proximal to the exit end of the first tailpipe to a second end distal to the exit end of the first tailpipe. Each shield engages the baffle at the first end and engages the first tailpipe at least at or proximal to the second end. The pair of shields is adapted to allow fluid flow to or from the plurality of perforations of the baffle.

First claim

What is claimed is:

1. An exhaust assembly comprising:
a first tailpipe comprising an exit end defining an outlet and a curved portion along at least a portion of a length of the first tailpipe, wherein the first tailpipe is adapted to discharge an exhaust gas through the outlet;
a baffle surrounding the first tailpipe at the exit end, the baffle defining a plurality of perforations therethrough; and
a pair of shields formed as separate parts, wherein each shield is attached to and at least partially surrounds each of the baffle and the first tailpipe, each shield extending from a first end proximal to the exit end of the first tailpipe to a second end distal to the exit end of the first tailpipe, wherein each shield engages the baffle at the first end and engages the first tailpipe at least at or proximal to the second end, wherein each shield is at least partially curved along its length, such curve being complementary in shape to a curve of the curved portion of the first tailpipe, such that each shield at least partially surrounds the curved portion of the first tailpipe, and wherein the pair of shields is adapted to allow fluid flow to or from the plurality of perforations of the baffle.

2. The exhaust assembly of claim 1 , wherein the first tailpipe further comprises a straight portion extending parallel to a longitudinal axis, and wherein the curved portion of the first tailpipe extends from the exit end to the straight portion of the first tailpipe.

3. The exhaust assembly of claim 2 , wherein the second end of each shield engages the curved portion of the first tailpipe.

4. The exhaust assembly of claim 2 , further comprising a muffler housing connected to the straight portion of the first tailpipe.

5. The exhaust assembly of claim 1 , wherein each shield further comprises a pair of opposing longitudinal edges extending from the first end to the second end, wherein each longitudinal edge of one shield is spaced apart from an adjoining longitudinal edge of the other shield, such that the pair of shields define a pair of shield gaps therebetween extending from respective first ends to the respective second ends, and wherein each shield gap is in fluid communication with the plurality of perforations of the baffle.

6. The exhaust assembly of claim 5 , wherein each longitudinal edge of each shield at least partially engages the baffle.

7. The exhaust assembly of claim 1 , wherein each shield has a first inner diameter at the first end and a second minimum inner diameter at the second end, wherein the first inner diameter is greater than the second minimum inner diameter.

8. The exhaust assembly of claim 7 , wherein the baffle has a baffle outer diameter and the first tailpipe has a first outer diameter, wherein the first inner diameter is equal to or greater than the baffle outer diameter, and wherein the second minimum inner diameter is equal to or greater than the first outer diameter of the first tailpipe.

9. The exhaust assembly of claim 1 , wherein each shield at least partially tapers from the first end to the second end.

10. The exhaust assembly of claim 1 , wherein each shield further comprises at least one opening at the second end, and wherein the at least one opening is in fluid communication with the plurality of perforations of the baffle.

11. The exhaust assembly of claim 10 , wherein the at least one opening of each shield is defined between the corresponding shield and the first tailpipe.

12. The exhaust assembly of claim 1 , wherein each shield is attached to the baffle at the first end and to the first tailpipe at least at or proximal to the second end.

13. The exhaust assembly of claim 1 , wherein each shield is a stamped part.

14. The exhaust assembly of claim 1 , further comprising a second tailpipe spaced apart from the first tailpipe and having a second outer diameter greater than a first outer diameter of the first tailpipe, and wherein the baffle has a baffle outer diameter substantially equal to the second outer diameter of the second tailpipe.

15. The exhaust assembly of claim 14 , further comprising a muffler housing connected to each of the first tailpipe and the second tailpipe.

16. An exhaust assembly comprising:
a muffler housing;
a first tailpipe connected to the muffler housing and having a first outer diameter, the first tailpipe comprising an exit end defining an outlet and a curved portion along at least a portion of a length of the first tailpipe, wherein the first tailpipe is adapted to discharge an exhaust gas through the outlet;
a baffle surrounding the first tailpipe at the exit end, the baffle defining a plurality of perforations therethrough, the baffle having a baffle outer diameter;
a pair of shields formed as separate parts, wherein each shield is attached to and at least partially surrounds each of the baffle and the first tailpipe, each shield extending from a first end proximal to the exit end of the first tailpipe to a second end distal to the exit end of the first tailpipe, wherein each shield engages the baffle at the first end and engages the first tailpipe at least at or proximal to the second end, wherein each shield is at least partially curved along its length, such curve being complementary in shape to a curve of the curved portion of the first tailpipe, such that each shield at least partially surrounds the curved portion of the first tailpipe, and wherein the pair of shields is adapted to allow fluid flow to or from the plurality of perforations of the baffle; and
a second tailpipe spaced apart from the first tailpipe and connected to the muffler housing, the second tailpipe having a second outer diameter greater than the first outer diameter of the first tailpipe and substantially equal to the baffle outer diameter of the baffle.

17. The exhaust assembly of claim 16 , wherein the first tailpipe further comprises a straight portion extending parallel to a longitudinal axis and connected to the muffler housing, wherein the curved portion of the first tailpipe extends from the exit end to the straight portion of the first tailpipe, and wherein the second end of each shield engages the curved portion of the first tailpipe.

18. The exhaust assembly of claim 16 , wherein each shield further comprises a pair of opposing longitudinal edges extending from the first end to the second end, wherein each longitudinal edge of one shield is spaced apart from an adjoining longitudinal edge of the other shield, such that the pair of shields define a pair of shield gaps therebetween extending from respective first ends to the respective second ends, and wherein each shield gap is in fluid communication with the plurality of perforations of the baffle.

19. The exhaust assembly of claim 16 , wherein each shield further comprises at least one opening at the second end, and wherein the at least one opening is in fluid communication with the plurality of perforations of the baffle.

20. The exhaust assembly of claim 16 , wherein each shield is attached to the baffle at the first end and to the first tailpipe at least at or proximal to the second end.

Assignees

• Tenneco Automotive Operating Co Inc

Inventors

• Johnson Jason C
• Smith Bradley
• Herwat Brett

Classifications

• F01N13/1805

  Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K) · CPC title

• F01N2260/14

  for modifying or adapting flow area or back-pressure · CPC title

• F01N2260/022

  using air · CPC title

• F01N13/1888

  the housing of the assembly consisting of two or more parts, e.g. two half-shells · CPC title

• F01N13/1872

  the assembly using stamp-formed parts or otherwise deformed sheet-metal · CPC title