Muffler device

• US 6,915,877 B2
• Filed: 01/13/2003
• Issued: 07/12/2005
• Est. Priority Date: 01/13/2003
• Status: Expired due to Fees

• Current Assignee: Garabed Khayalian
• Original Assignee: Garabed Khayalian
• Inventors: Khayalian, Garabed
• Primary Examiner(s): Martin, David
• Assistant Examiner(s): McCloud, Renata
• Application Number:
  US10/342,070
• Publication Number:
  US 20040134713A1
• Time in Patent Office: 911 Days
• Field of Search: 181259-275, 181/258, 181/240, 181/212, 60288-302
• US Class Current: 181/272
• CPC Class Codes: F01N 1/06 by using interference effect
• CPC Class Codes: F01N 1/083 using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
• CPC Class Codes: F01N 1/089 using two or more expansion chambers in series F01N1/083, F01N1/084, F01N1/086 take precedence
• CPC Class Codes: F01N 2260/06 for improving exhaust evacuation or circulation, or reducing back-pressure
• CPC Class Codes: F01N 2470/02 Tubes being perforated
• CPC Class Codes: F01N 2490/04 the gases flowing longitudinally from inlet to outlet only in one direction
• CPC Class Codes: F01N 2490/08 Two or more expansion chambers in series separated by apertured walls only
• CPC Class Codes: F01N 2490/16 Chambers with particular shapes, e.g. spherical

Abstract

A muffler device, in one preferred embodiment, having four barriers therein. Each barrier functions to form an within which the exhaust stream can be partitioned and redirected. Eventually, the exhaust streams are once again recombined and expelled from the muffler. The partitioning and reassembly of the exhaust streams provides sound attenuation while increasing the horsepower of the engine and without resulting in any build up of unignited fuel.

Claims

1. A muffler device, comprising:

an enclosure having an inlet conduit through which exhaust gases are received within said enclosure, and an outlet conduit through which said exhaust gases are expelled from the enclosure;

a first barrier located within said enclosure and proximal to said inlet conduit such that a first compartment is formed between said first barrier and an inlet wall of said enclosure;

a first aperture and a second aperture being defined through said first barrier, whereby said exhaust gases are split into two streams;

a second barrier is located more distal to said inlet conduit than said first barrier and a second compartment is created between said first and second barriers, said second barrier further comprising a first hole being defined on said second barrier and said first hole being axially aligned with said first aperture, whereby a first conduit extends between said first aperture and said first hole;

a second hole being defined on said second barrier and said second hole being axially aligned with said second aperture, whereby a second conduit extends between said second aperture and said second hole;

a third aperture being defined through said second barrier and said first conduit has at least a void defined therein such that the exhaust stream traveling through said first conduit is further divided into two exhaust streams wherein one stream exits into said second compartment through said void and out of said third aperture, and one stream travels through said first conduit and out of said first hole;

whereby the split exhaust streams are rejoined at a point proximal to said outlet conduit before being expelled therefrom.

2. The device of claim 1, wherein said first conduit has a plurality of voids defined therein, and wherein said first conduit has a larger diameter at said first aperture than at said first hole.

3. The device of claim 1, wherein said second conduit has a smaller diameter than said first conduit;

a third conduit extends partially into said second compartment from said third hole of said second barrier, and allows passage of an exhaust stream there through;

said third conduit having substantially the same diameter as said second conduit.

4. The device of claim 1, wherein a third barrier is located more distal to said inlet wall than said second barrier such that a third compartment is formed between said second barrier and said third barrier;

said third barrier having at least one cavity defined there through such that the three exhaust streams are passed there through and expelled from said outlet conduit.

5. The device of claim 4, wherein said third barrier has a first cavity, a second cavity, and a third cavity that are axially aligned with said first hole, second hole, and third hole, respectively;

whereby said three exhaust streams pass through said first hole, second hole, and third hole, respectively and are rejoined at a point distal thereto before passing through said outlet conduit.

6. The device of claim 1, wherein a third barrier is located more distal to said inlet wall than said second barrier such that a third compartment is formed between said second barrier and said third barrier;

said third barrier being formed by a plurality of planar surfaces such that at least three apexes are formed distal to said second barrier and proximal to said outlet conduit;

said plurality of planar surfaces also forming a base at each conjunction there between and at the conjunction between the planar surfaces and the side walls of said enclosure, wherein the bases are more proximal to said second barrier and distal to said apexes;

a cavity located on each of the apexes for passage of the exhaust gas streams there through.

7. The device of claim 6, wherein said three apexes are substantially axially aligned with said first bole, second hole, and third hole, respectively.

8. The device of claim 6, wherein a fourth barrier is placed between said third barrier and said outlet conduit;

said fourth barrier having a substantially concave shape such that a fourth planar surface defines a peak therein, said peak being more proximal to said outlet conduit than a point of attachment of said planar surfaces to the side walls;

an orifice being defined through said peak;

whereby, the three exhaust streams are combined into one stream at said peak and pass through said orifice and out of said outlet conduit.

9. A muffler device for an internal combustion engine, comprising:

an enclosure having an inlet wall and an opposing outlet wall that are interconnected by a first side wall and a second side wall;

a top and a bottom resting upon the walls on opposing sides of the walls and enclosing the same;

an inlet conduit attaching to said inlet wall whereby a first opening in said inlet wall communicates with said inlet conduit and through which exhaust gases are received within said enclosure, and an outlet conduit through which said exhaust gases are expelled from the enclosure;

a first barrier located within said enclosure and extending between the first and second side walls and being proximal to said inlet conduit such that a first area is formed between said first barrier and the inlet wall of said enclosure;

a first aperture and a second aperture being defined through said first opening, whereby said exhaust gases are split into two streams;

a second barrier is located more distal to said inlet conduit than said first barrier and extending between the first and second side walls such that a second area is created between said first and second barriers, said second barrier further comprising;

a first hole being defined substantially medially on said second barrier and said first hole being axially aligned with said first aperture, whereby a first conduit extends between said first aperture and said first hole;

a second hole being defined on said second barrier and said second hole being axially aligned with said second aperture, whereby a second conduit extends between said second aperture and said second hole;

a third hole being defined on said second barrier on side distal to said second hole;

at least a void defined within said first conduit perpendicular to its axial extension and in a direction opposing said second conduit but opening towards said third hole, such that the exhaust stream traveling through said first conduit is further divided into a second exhaust stream and enters into said second area through said void and leaves the second area through said third hole and one stream continues to travel through said first conduit and out of said first hole;

whereby the split exhaust streams travel through said first and second conduits and said third hole and are rejoined into one stream before exiting said outlet conduit.

10. The device of claim 9, wherein said first conduit and first aperture have a larger diameter at said first barrier than the diameter of said first hole at said second barrier and said first conduit has a plurality of voids.

11. The device of claim 9, wherein said second conduit has a smaller diameter than said first conduit;

a third conduit extends partially into said second area from said third hole of said second barrier, and allows passage of an exhaust stream there through and out of said third hole;

said third conduit having substantially the same diameter as said second conduit.

12. The device of claim 11, wherein a third barrier is located more distal to said inlet wall than said second barrier such that a third area is formed between said second barrier and said third barrier;

a first cavity, a second cavity, and a third cavity defined on said third barrier and are axially aligned with said first hole, second hole, and third hole, respectively;

whereby said three exhaust streams pass through said first hole, second hole, and third hole, respectively and are rejoined at a point distal thereto before passing through said outlet conduit.

13. The device of claim 11, wherein a third barrier is located more distal to said inlet wall than said second barrier such that a third area is formed between said second barrier and said third barrier;

said third barrier being formed by a plurality of planar surfaces such that at least three apexes are formed distal to said second barrier and proximal to said outlet conduit;

said plurality of planar surfaces also forming a base at each conjunction there between and at the conjunction between the planar surfaces and the first and second side walls of said enclosure, wherein the bases are more proximal to said second barrier and distal to said apexes;

a cavity located on each of the apexes for passage of the exhaust gas streams there through.

14. The device of claim 13, wherein said three apexes are substantially axially aligned with said first hole, second hole, and third hole, respectively.

15. The device of claim 13, wherein a fourth barrier is placed between said third barrier and said outlet conduit;

said fourth barrier having a substantially concave shape such that a fourth planar surface defines a peak therein, said peak being more proximal to said outlet conduit than a point of attachment of said planar surfaces to the side walls;

an orifice being defined through said peak;

whereby, the three exhaust streams are combined into one stream at said peak and pass through said orifice and out of said outlet conduit.

16. A muffler device for an internal combustion engine, comprising:

an enclosure having an inlet wall and an opposing outlet wall that are interconnected by a first side wall and a second side wall;

a top and a bottom resting upon the walls on opposing sides of the walls and enclosing the same;

an inlet conduit attaching to said inlet wall and communicating with a first opening defined through said inlet wall, exhaust gases travel through said inlet conduit and enter into said enclosure through said first opening;

an outlet conduit through which said exhaust are expelled from the enclosure;

a first barrier located within said enclosure and extending between the first and second side walls and being proximal to said inlet conduit such that a first area is formed between said first barrier and the inlet wall of said enclosure;

a first aperture and a second aperture being defined through said first opening, whereby said exhaust gases are split into two streams;

a second barrier is located more distal to said inlet conduit than said first barrier and extending between the first and second side walls such that a second area is created between said first and second barriers;

a first hole being defined substantially medially on said second barrier and said first hole being axially aligned with said first aperture, whereby a first conduit extends between said first aperture and said first hole;

a second hole being defined on said second barrier and said second hole being axially aligned with said second aperture, whereby a second conduit extends between said second aperture and said second hole;

a third hole being defined on said second barrier on a side distal to said second hole;

at least a void defined within said first conduit perpendicular to its axial extension and in a direction opposing said second conduit but opening towards said third hole, such that the exhaust stream traveling through said first conduit is further divided into a second exhaust stream and enters into said second area through said void and leaves the second area through said third hole and one stream continues to travel through said first conduit and out of said first hole;

whereby the split exhaust streams travel through said first and second conduits and said third hole end are rejoined into one stream before exiting said outlet conduit.

17. The device of claim 16, wherein a third barrier is located more distal to said inlet wall than said second barrier such that a third area is formed between said second barrier and said third barrier;

said third barrier being formed by a plurality of planar surfaces such that at least three apexes are formed distal to said second barrier and proximal to said outlet conduit;

said plurality of planar surfaces also forming a base at each conjunction there between and at the conjunction between the planar surfaces and the first and second side walls of said enclosure, wherein the bases are more proximal to said second barrier and distal to said apexes;

a cavity located on each of the apexes for passage of the exhaust gas streams there through;

a fourth barrier is placed between said third barrier and said outlet conduit such that a fourth area is formed where the three exhaust gas streams are expelled from the cavities is received;

said fourth barrier having a substantially concave shape such that a fourth planar surface defines a peak therein, said peak being more proximal to said outlet conduit than a point of attachment of said planar surfaces to the side walls;

an orifice being defined through said peak;

whereby, the three exhaust streams are combined into one stream at said peak and pass through said orifice and out of said outlet conduit.