System for a combined spark arrestor and muffler assembly

Patent metadata

Field	Value
Publication number	US-11629621-B2
Application number	US-202117360932-A
Country	US
Kind code	B2
Filing date	Jun 28, 2021
Priority date	Jun 29, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

Systems and methods are provided for a combined spark arrestor and muffler assembly. In one example, a system may include a combined housing, the combined housing including a spark arrestor portion including a plurality of stator fins, and a muffler portion including acoustic packing, the muffler portion fluidically coupled to the spark arrestor portion via a first sliding joint and a second sliding joint. In this way, a single component of a vehicle exhaust system may reduce sparks and/or carbon deposits in exhaust gas, while also reducing exhaust noise.

First claim

The invention claimed is:

1. A system, comprising:
a first combined housing, comprising:
a spark arrestor portion, the spark arrestor portion including a plurality of stator fins; and
a muffler portion, the muffler portion including acoustic packing, wherein the muffler portion is fluidically coupled to the spark arrestor portion via a first sliding joint and a second sliding joint.

2. The system of claim 1 , wherein the first combined housing comprises:
an internal cavity, the plurality of stator fins positioned therein;
a cylindrical outer casing;
a spark collector coupled to the cylindrical outer casing; and
a drain port fluidically coupling the internal cavity to an external surface of the cylindrical outer casing.

3. The system of claim 2 , wherein the first combined housing comprises:
an exhaust gas inlet positioned at a first end of the cylindrical outer casing, the exhaust gas inlet extending between the external surface of the cylindrical outer casing and the internal cavity; and
an exhaust gas outlet positioned at a second end of the cylindrical outer casing, the exhaust gas outlet extending between the external surface of the cylindrical outer casing and the internal cavity, a face of the exhaust gas outlet perpendicular to a face of the exhaust gas inlet.

4. The system of claim 2 , wherein the acoustic packing is positioned between the internal cavity and an internal surface of the cylindrical outer casing.

5. The system of claim 2 , wherein the cylindrical outer casing is coupled to a clamp sheet via the first sliding joint, the first sliding joint including at least one pre-loaded spring.

6. The system of claim 2 , wherein the muffler portion includes a perforated pipe, the perforated pipe coupled to the cylindrical outer casing via the second sliding joint.

7. The system of claim 2 , wherein the spark collector includes an outer box fixedly coupled to the cylindrical outer casing and an inner box slidably coupled to the outer box.

8. The system of claim 1 , further comprising a second combined housing, the second combined housing including another spark arrestor portion and another muffler portion, a central axis of the first combined housing parallel to a central axis of the second combined housing.

9. The system of claim 1 , wherein the first combined housing is coupled to an exhaust system of a locomotive engine.

Assignees

• Transp Ip Holdings Llc

Inventors

• Patil Abhijit Eknath
• Joshi Samir Vikas
• Kanzal Venkatesha Sandeep
• Selvaraj Prabhakaran

Classifications

• F01N3/06 Primary

  for extinguishing sparks · CPC title

• F01N13/1811

  with means permitting relative movement, e.g. compensation of thermal expansion or vibration · CPC title

• F01N2590/08

  for heavy duty applications, e.g. trucks, buses, tractors, locomotives · CPC title

• G10K11/161

  in systems with fluid flow (G10K11/162 takes precedence; gas flow silencers or exhaust apparatus for machines or engines in general or for internal combustion engine F01N, noise absorbers in pipes or pipe systems F16L55/02; noise absorption in air conditioning and ventilation F24F13/24; silencing exhaust or propulsion jets in aircraft B64D33/06) · CPC title

• F01N3/005

  for draining or otherwise eliminating condensates or moisture accumulating in the apparatus (F01N3/02 takes precedence) · CPC title