MXPA00007007A - Improved high performance muffler - Google Patents

Abstract

The improved high performance muffler (12) is used to attenuate the sound waves in exhaust gases from internal combustion engines and the like and has a casing (14), which includes a closed volume defined by side walls, a top wall (16), a bottom wall (18) and inlet and outlet end caps (26, 28). The casing (14) also has a defined exhaust gas-flow passageway, which extends between the end caps (26, 28), which is bounded by upper and lower walls within the casing and the side walls, and which includes inlet and outlet chambers adjacent to the inlet and outlet end caps, respectively. Two spaced apart, gas-flow channels. A gas-flow director assembly (56), disposed between the side walls and the upper and lower walls, defines two spaced apart gas-flow channels. The gas-flow channels have a uniform, smooth cross section, and their lengths are substantially equal. The gas-flow director assembly (56) divides the exhaust gases flowing into the gas inlet chamber into two substantially unrestricted and equivolume gas streams, and also defines an intermediate chamber, which communicates with the gas-flow channels, intermediate their ends, so as to permit the exhaust gases flowing in the channels to expand andmix for sound attenuation. Perforations in the upper and lower walls permit sound waves in the exhaust gases to be attenuated in sound absorption materials (91, 102) disposed in the closed volume of the casing about the gas-flow passageway.

Description

HIGH PERFORMANCE SILENCER, IMPROVED BACKGROUND OF THE INVENTION The present invention relates to silencers, and more particularly, to high-performance silencers that are used to attenuate sound waves in the exhaust gases of internal combustion engines and the like (for example, automotive vehicle engines). , turbine engines, mechanical tools that work with compressed gas, etc.). Exhaust gases from internal combustion engines and the like have sound waves that many people consider objectionable noise. For many years, silencers have been used in attempts to silence or attenuate sound waves by modifying and / or eliminating certain frequencies of sound waves. A permanent goal of those who work in the silencer technique, is that the silencers produce a pleasant sound or tone at an acceptable level. In the past, various designs or structures of silencers have been proposed and / or used. One type of muffler design commonly used includes a REF.121908 with damped flow paths for the exhaust gases. Changes in the direction of the exhaust gas flow path, over short distances, caused by the dampers, effectively reduce the sound level. However, these damper type silencers have an undesirable side effect, which tends to create high back pressure in the engines. Such counterpressures reduce the power and efficiency of the engines. Other designs of mufflers direct the exhaust gases through perforated tubes that are surrounded by a sound-absorbing material, such as glass fibers, which are commonly referred to as 'glass packaging' or 'glass wool'. These "glass packing" or "glass wool" type silencers generally produce lower backpressures in the motor, many people find the noise and level of the resulting sound objectionable.The so-called "high performance" silencers have been developed and are recognized by those in the technique of silencers as a different type or class of silencer. High-performance mufflers tend to be smaller or more compact in size, than mufflers that are typically used with conventional automobiles. They usually create a low backpressure in the engine and a level of sound and tone that are considered as pleasant by people who drive and appreciate high-performance cars and who do not object to others. Such a high performance silencer is described in the Patent of E, U. A No. 5,033,581. The patented muffler includes at least two separate gas pipes or passageways or interconnected in series with a single or multiple exhaust pipe. At least one of the gas tubes has a length greater than that of the other or others. The total cross-sectional areas of all the gas tubes is approximately equal to or greater than the cross-sectional area of the single or multiple exhaust manifold or of the single or multiple exhaust manifold. In one embodiment, a housing encloses the gas tubes. In this embodiment, at least one of the gas tubes is perforated, and the space between the gas tubes and the housing is filled with a sound absorbing material.

However, there is a recognized need in the art for mufflers to make an improved high performance muffler that can be used in both high performance and conventional cars, and that enhances the power of the engine and its efficiency and produces a sound level and a tone with which most agree to be pleasant and acceptable.

BRIEF DESCRIPTION OF THE INVENTION In principal aspects, the improved high-performance silencer of our present invention includes the unique housing or envelope design that enhances engine performance and efficiency, which produces a relatively quiet and pleasant sound, and which is compact and rigid due to a novel system of longitudinal internal supports. This improved muffler includes a through passage of the exhaust gas flow, which extends between the end cap of the inlet connection and the end cap of the outlet connection, and a flow directing assembly, which is placed in the via of the gas flow and that divides and channels the incoming exhaust gases into two unrestricted gas streams of substantially equal volumes. The flow routing assembly converges again by joining the two exhaust gas streams adjacent to the end cap of the muffler outlet connection, and therefore maintains the gas flow through the muffler in the manner of coherent streams and substantially free of eddies. These two exhaust gas streams are also channeled, in part, by perforated walls which allow the exhaust gases to expand through the perforated openings and to flow in the sound absorbing material in the envelope and therefore substantially Eliminate the high frequency wavelengths that exist in the exhaust gases. An additional sound attenuation is achieved in an intermediate chamber which is defined by the flow routing assembly which allows the exhaust gases to flow in the two streams to mix and expand. Accordingly, one of the main objects of the present invention is to provide an improved high performance muffler that produces an acceptable, pleasing sound, which enhances the performance and efficiency of the engine and which is compact, rigid and relatively easy to manufacture. Another object of the present invention is to provide an improved, high performance muffler for the attenuation of sound waves in the exhaust gases of internal combustion engines and the like, wherein this improved muffler includes a casing having a first end , a second end and a longitudinal centerline that extends through the ends of the envelope; wherein the wrap includes a first and a second end cap that are generally arranged perpendicular relative to the longitudinal center line that join and close the first and second ends of the wrap, respectively, to define a closed space within the wrapper; wherein the first end cap has an envelope to allow the exhaust gases to flow in the envelope; wherein the second end cap has at least one envelope to allow the exhaust gases to flow out of the envelope; wherein a passageway of the gas flow in the extending envelope is defined, starting from a position adjacent to the envelope of the first end cap to a position adjacent to each opening in the second end cap; wherein the gas flow passageway defines a gas inlet chamber adjacent to the opening of the first end cap so that the exhaust gases can flow into the inlet chamber through the opening of the first end cap, and an outlet chamber for the gas in relation adjacent to the openings in the second end cap so that the exhaust gases can flow from the outlet chamber through the openings in the second end cap; wherein a flow routing assembly defines a first flow channel for the gas, a second flow channel for the gas and an intermediate chamber in the gas flow path; wherein the first channel of the gas flow has an inlet connection end, which is in communication, by a gas flow, with the inlet chamber, and an outlet connection end, which is in communication, by a gas flow, with the outlet chamber, a longitudinal axis, extending from the inlet connection end to the outlet connection end, and a predetermined length; wherein the second gas flow channel has an inlet connection end, which is in communication, by a gas flow, with the inlet chamber, and an outlet connection end, which is in communication, through a gas flow, with the outlet chamber, a longitudinal axis, extending from the inlet connection end, to the outlet connection end, and a predetermined length, which is substantially equal to the predetermined length of the first channel of the outlet gas flow; wherein the flow-directing assembly divides the exhaust gas flowing in the gas inlet chamber in two, and in gas streams without substantial restriction having substantially equal volumes and flowing through the first and second flow channels of the flow. gas, respectively; wherein the intermediate chamber interconnects the first gas flow channel and the second gas flow channel, and which is intermediate between its inlet connection ends and its outlet connection ends, to allow the exhaust gases to flow in the first and second channels for mixing and expanding in the intermediate chamber and therefore providing an attenuation of the intermediate frequency of the wavelength in the sound waves of the exhaust gas; and wherein means are provided to allow the gas flowing in the first and second gas flow channels to expand in the enclosed space of the envelope outside the path of the gas flow to substantially eliminate the lengths of the gas flow. high frequency wave of sound waves in the exhaust gases. A related object of the present invention is to provide a high performance, improved silencer of the type described, wherein this second end cap includes two openings; wherein the openings are spaced equidistant from the longitudinal center line; and wherein the opening of the first end cap may either be aligned with respect to the longitudinal centerline or may be spaced apart from one or the other of the longitudinal centerline such that when the opening is separated from one of the sides of the central line, the opening in the second terminal lid or in the terminal outlet lid is separated towards the other side in relation to the center line. Still another object of the present invention is to provide an improved high performance muffler of the type described, wherein the casing includes a first side wall, a second side wall, an upper wall and a lower wall; wherein the side, top and bottom walls extend between the first and second end caps; wherein the passageway of the gas flow includes an upper wall, which is adjacent to the upper wall, and a lower wall, which is adjacent to the lower wall and which is spaced from the upper wall; wherein the top and bottom walls extend between the side walls between the first and second end caps; and wherein the flow routing assembly is arranged in the space between the bottom wall, the top wall and the side walls, and between the entrance and exit chambers. A related object of the present invention is to provide a high-performance, improved muffler, as described, wherein the flow-directing assembly includes a first router and a second router; wherein the first and second routers, each one generally has a triangular conformation defined by the walls defining an apex and the walls defining a base; wherein the apex of the first router is disposed adjacent to the entry chamber; wherein the apex of the second router is disposed adjacent to the exit chamber; wherein the walls that form the base of the first and second routers are facing each other, but are separated from one another; wherein the first and second channel of the gas flow is defined between the side walls, the top and bottom walls and the walls defining the apex of the first and second routers; wherein the intermediate chamber is defined, in part, between the side walls and the walls that form the base of the first and second routers. Another related object of the present invention is to provide an improved high performance muffler as described, wherein the walls forming the base of the first and second routers include a variety of openings that allow the exhaust gases to flow into the interior of the first and second. second router; and wherein the intermediate chamber includes the interior spaces of the first and second routers, as defined by the walls that make up the base, the walls that define the apex, and the walls that make up the base of the routers. These and other objects, advantages and benefits of the present invention will be more apparent from the following descriptions of the preferred embodiments of our present invention, which are taken in conjunction with the figures described below.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a longitudinal cross-sectional view of an improved high performance muffler embodiment of the present invention, taken along a vertical plane including the longitudinal centerline of the muffler shell; Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1; Figure 3 is a longitudinal cross-sectional view similar to the view of Figure 1, of another embodiment of the present invention; Figure 4 is a longitudinal cross-sectional view, similar to the views of Figures 1 and 3 of some other embodiment of the present invention; Figure 5 is a schematic view along line 5-5 of Figure 1; and Figure 6 is a schematic view of the walls that can be used to construct the first and second flow routers of the present invention. In the specification and claims of our present invention, the terms, "upper", "lower", "lateral", "top", "bottom", "left", "right", and similar directional terms are used to facilitate the description of the preferred embodiments of our invention, as shown in the above-described Figures illustrating those embodiments.The terms should not, however, be construed as limiting the scope of our invention, particularly as described in the claims, since for example, the "upper" part of the muffler can become 'the lower part' when it is turned over, and its 'sides' can become its 'upper part' and 'lower part' by turning the muffler ninety degrees from the position which is shown in the figures.

Additionally in the specification, the same reference numbers have been used to specify the same parts, and equal or comparable components in the descriptions of the various embodiments of our invention.

DETAILED DESCRIPTION OF THE INVENTION Referring now to Figures 1 and 2, a preferred embodiment of the improved high performance silencer of our present invention is generally shown at 12. The silencer has a welded metal shell or housing 14 that includes an upper wall 16, a lower wall 18, a first side wall 22 and a second side wall 24. The walls of the shell can be made of any of the metals that are used conventionally with silencers. In addition, the envelope 1 can be made from a single wrapped wall. The upper and lower walls 16 and 18 have curved portions at the side edges that are welded together to the adjacent edges of the side walls 22 and 24 so that, as best shown in Figure 2, the full shape of the section of the envelope 14 is generally rectangular. The left and right ends of the casing 14 (as shown in Figure 1) are closed by an inlet connection terminal cap 26 and an outlet connection end cap 28, respectively. These end caps are joined, by welding, on their peripheral edges with the upper wall 16, the lower wall 18 and the side walls 22 and 24 so that the interior of the envelope 14 is a gas-tight space and is closed except as it is noted from here on. As with the walls 16, 18, 22 and 24, the end caps 26 and 28 can be made of any of the metals conventionally used in the silencers. The casing 14 has a longitudinal central axis, which is equidistant between the planes of the upper and lower walls 16 and 18 and between the planes of the side walls 22 and 24 and extending between the left and right ends of the casing 14. The inlet connection terminal cap 2 has an inlet connection opening 32 protruding towards the lower wall 18 from the longitudinal center line. The outlet connection end cap 34 which is coaxial with respect to the longitudinal center line. A tubular metal attachment for the inlet connection 36 joins, by welding, to the dilated end of the inlet connection end cap 26 so that its expanded end surrounds the inlet opening 32. Similarly, a tubular metal fitting for the outlet connection 38 is joined, by welding, at its dilated end to the outlet connection end cap 28 so that its expanded end surrounds the outlet opening 34. The other ends of the attachments 36 and 38 are adapted to be connected to an exhaust pipe of an engine conventional and a nozzle (not shown), respectively. A passageway for the gas flow 42 is defined within the envelope 14 by the top and bottom walls 44 and 46. More specifically, the passageway 42 is defined between the top wall, 44, the wall down 46, the end caps 26 and 28 and the side walls 22 and 24. The passageway for the gas flow is intended to allow the exhaust gases, which are introduced into the envelope 14 through the connecting opening. inlet 32, flow through the jacket 14 and outwardly of the outlet connection opening 34. The upper wall 44 is adjacent in relation to the upper wall 16 while the lower wall 46 is adjacent in relation to the bottom wall 18. These walls 44 and 46 are joined, by welding, along their lateral edges to the side walls 22 and 24, at their ends, to the end caps 26 and 28, and are adjacent in relation to the edges above and below the openings 32 and 34, respectively vamente. The walls 44 and 46 generally have centrally disposed curved sections 48 and 52, respectively, and are located and configured so that the concave portions of the curved sections generally meet one another. The top and bottom walls 44 and 46 both include a variety of relatively small and equidistantly spaced openings or holes 54. The openings are substantially along the full lengths and widths of the walls 44 and 46.

In a muffler 12 where, for example, the length (that is, the distance between the end cap 26 and 28) and the height (that is, the distance between the walls 16 and 18) of the muffler are 35.56 cm and 26.47. cm, respectively, the perforated openings have a diameter of 0.64 cm and the distance between their centers is 1.27 cm. However, the perforated openings 54, the surfaces, face to face of the walls 46 and 48 (that is, the surface of the wall facing downwards 46 and the surface of the wall facing upwards 48) they are smoothed so that the exhaust gases can flow freely through the passageway 42. A flow diverter assembly 56 is disposed within the passageway of the adjacent gas flow 42 in, and between the curved sections 48. and 52 of the walls 44 and 46. The assembly 56 extends between the side walls 22 and 24 and is joined, by welding, to the side walls. One of the advantages of the silencer 12 is that the structure of the sheath 14 is very rigid and durable due to its unique longitudinal support system. Not only the walls 16, 18, 22 and 24 and the end caps 26 and 28 are welded together, but the walls 44 and 46 extend between the side walls 22 and 24 and the end caps 26 and 28 to provide greater support and reinforcement internal to the envelope. The assembly 56 similarly supports and reinforces the side walls 22 and 24 and adds a general rigidity to the shell 1. The flow directing assembly 56 includes an inlet flow diverter or diverter 58 and an outflow diverter or diverter 62. As shown in Figure 1, both routers are generally triangular in their conformation in the cross section. cross. Each of the routers 58 and 62 is defined by a pair of walls defining an apex 64 and 66 and a base wall 68. Walls 64 and 66 for each router define, at their apex, an apex edge that also extends between the side walls 22 and 2. The apex edge 72 of the input router 58 usually points to the inlet connection port 32. The apex edge 74 of the router 62 points generally towards the opening of the outlet port 34. walls defining the base 68 of the routers 58 and 62 are separated from one another, but generally face one another. As best shown in Figures 5 and 6, the flow routers 58 and 62 can be constructed by using a pair of identical and combined walls 76 that include a wall defining an apex 64 for a router 58 or 62, a defining wall. one apex 66 for the other router 62 or 58, and one half of the walls defining the base 62 for each of the routers. Each of the walls 76 also includes a connecting portion 78. The routers 58 and 62 are constructed by placing the walls 76 so that their attachment portions 78 are in contact with each other back to back, as shown in Figure 1. walls 76 include flange portions 82 that are adjacent to each of their side edges and that abut and are welded to the side walls 22 and 24.

The junction portions 78 and each wall of the router 76 include four equally spaced distending holes 84 which have the same diameter. The holes 84 are aligned when the routers 58 and 62 are assembled in Figure 1 so that the exhaust gases can pass through the holes 84 on one side of the back-to-back portions 78 on the other side. Each half of the wall 68 defining the base, which forms parts of a wall 76, includes four equally spaced distension holes, with an equal diameter 86 so that when the assembly 56 is constructed, as shown in Figure 1, the walls that define the base 68 of the routers 58 and 62 each include eight orifices 86. The holes 86 of the two routers are aligned substantially axially. As a result of its construction, the routers 58 and 62 are 'hollow' in the sense that the walls defining the apex 64 and 66 and the walls defining the base 68 of each define an interior triangular chamber 88. As shown in Figure 1 , the edges of the inlet and outlet apices 72 and 74 of the routers 58 and 62 are separated from the inlet connection opening 32 and the outlet connection opening 34, respectively. of the path of the passage of the gas flow 42 between the edge of the inlet apex and the inlet connection opening 32. Similarly, an outlet chamber 92 is defined within the passageway of the gas flow 42 between the edge of the outlet apex 74 and the opening of the outlet connection 34. The flow directing assembly 56 divides the passageway 42, between the inlet and outlet chambers 90 and 92, into two channels 94 and 96 which have substantially equal cross-sectional areas More specific The separations of the walls defining the apex 64 and 66, with respect to the adjacent upper and lower walls 44 and 46, are preselected in such a way that the transverse areas of the channels 94 and 96 remain the same, except for the portion adjacent to the walls defining the base 68. The edge of the entrance apex 72 causes the exhaust gases, which flow into the inlet chamber 90 through the inlet connection opening 32, to be divided into two gas streams without substantial restriction and of substantially equal volumes, which then flow, without any substantial restriction through channels 94 and 96. The gas streams are reattached or incorporated, after passing the edge of the exit apex 74, in order to maintain an exhaust gas stream substantially free of eddies in the outlet chamber 92. The exhaust gas stream which is re-attached after passing through the outlet connection 34 and the Attachment 38. The openings 54 in the walls 44 and 46 allow the exhaust gases to expand through the openings into the closed space defined by the walls 16, 18, 22, 24, 44 and 46 and the end caps 26 and 28. The sound-absorbing materials are arranged in this enclosed space to assist essentially in the elimination of the high-frequency wavelengths that exist in the exhaust gases. As shown in Figure 1, the sound absorbing materials may include a layer of woven needles of stainless steel and wool 98, which is disposed adjacent to the walls 44 and 46, and basalt fiber or long strand fiberglass 102, which is disposed between the material of the interwoven needle mat 98 and the walls 16 and 18. The third intermediate chamber 104 is defined, in the passageway of the gas flow 42 between the walls that define the base 68 and include the inner chambers 88 of the inlet and outlet routers 58 and 62. Due to the distension holes 84 and 86, the exhaust gases, which flow in the gas streams (as defined by the channels 94 and 96), can also flow into the intermediate chamber 104 where the gases mix and dilate. This mixing and dilation in the intermediate chamber results in a substantial attenuation of the sound, and more particularly, eliminates the high frequency wavelengths of the sound waves of the gases. In sum, the structure of the flow-directing assembly 56, in cooperation with the structure of the walls 44 and 46, divides the exhaust gases into two unrestricted streams of equal volumes and also converges again the currents in the outlet chamber. 92 to minimize the back pressure of the exhaust system. The improved, high performance muffler of the present invention can be constructed to accommodate various configurations of exhaust pipes and nozzles. As noted, in Figure 1, the center line of the outlet connection opening 34 in the end cap of the outlet connection 28 is coaxial with respect to the longitudinal center line in the envelope 14 while the line central of the inlet connection opening 32 of the terminal cover of the inlet connection 26 protrudes, towards the bottom part of the wall 18, with respect to the longitudinal central line of the envelope. The muffler 106 shown in Figure 3 is structurally and functionally identical to the muffler 12, which is shown in Figures 1 and 2, except that the center line of the opening of the outlet connection 34 also protrudes from the line longitudinal central of the envelope. The unbalance direction of the opening 34 is opposite that of the imbalance of the inlet connection opening 32 (that is, towards the top of the wall 16). Both openings 32 and 34 may protrude the same distance.

The muffler 108 shown in Figure 4 is structurally identical to the mufflers 12 and 106 except that the chamber 92 has a space greater than that of the chamber 90 to accommodate two outlet connection openings 112 and 114 in the lid. outlet connection terminal 28 and two output connection fittings 116 and 118 which are each identical to the attachment 38. A triangular forming component 122 is disposed mounted on the leftward surface of the end cap 28, between outlet connection openings 112 and 114. The apex end of the component 122 faces the apex edge of the outlet connection 74. The openings 112 and 114 protrude from the longitudinal central axis of the silencer 108 by an equal distance. In addition, the center line of the inlet connection opening 118 in the end cap of the inlet connection 26 is aligned with the longitudinal central axis of the silencer 108. Preferred embodiments of our invention have been described and are illustrative of our invention. It should be understood, however, that our invention is not limited to these preferred embodiments. Therefore, it is contemplated that the appended claims define the scope of the invention for which we seek protection.

It is noted that in relation to this date, the best known method for the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects or products to which it refers.

Claims (16)

CLAIMS Having described the invention as above, the content of the following claims is claimed as property:

1. A high-performance, improved silencer for use in attenuating sound waves from exhaust gases from internal combustion engines and the like; characterized in that the improved silencer comprises: a casing having a first end and a second end, and having a longitudinal center line, extending through the first end and the second end of the casing and including a first end cap of Inlet connection and a second outlet connection end cap, these end caps are generally arranged perpendicular to the longitudinal centerline and are joined to it, and close the first and second ends of the envelope, respectively, so as to define a closed space inside the envelope; the first end cap has an opening to allow the exhaust gases to flow in the envelope; the second end cap has at least one opening to allow the exhaust gases to flow out of the envelope; a passageway for the exhaust gas flow that is defined in the envelope, the passageway for the gas flow extends adjacent in relation to the opening in the first terminal cover until adjacent to each opening in the second terminal cover; the passage of the gas flow includes a chamber for the inlet gas, which is adjacent in relation to the opening of the first end cap so that the exhaust gases can flow into the chamber of the inlet gases through the opening of the gas. the first end cap, and an outlet gas chamber, which is adjacent in relation to each opening of the second end cap so that the exhaust gases can flow from the outlet connection chamber through each opening of the second cover terminal; a gas flow directing assembly defining a first gas flow channel, a second gas flow channel, and an intermediate chamber in the gas flow path; the first gas flow channel has an inlet connection end, which is in communication, by a gas flow, with the inlet chamber, and an outlet connection end, which is in communication, by a gas flow , with the outlet chamber, a longitudinal axis, extending from the end of the inlet connection to the outlet connection end, and a predetermined length; the second gas flow channel has an inlet connection end, which is in communication, by a gas flow, with the inlet chamber, an outlet connection end, which is in communication, by a gas flow, with the outlet chamber, a longitudinal axis, extending from the inlet connection end to the outlet connection end, and a predetermined length, which is substantially equal to the predetermined length of the first channel of the gas flow; the gas flow routing assembly divides in two gas streams to the exhaust gases flowing in the inlet gas chamber, without substantial restriction, with substantially equal volumes and flowing through the first gas flow channel and the second channel of the gas flow, respectively; the intermediate chamber interconnects the first and second channels of the gas flow, and are intermediate between the inlet connection and outlet connection end, to allow the exhaust gases to flow in the first and second gas flow channels to mix and dilate in the intermediate chamber, and consequently, allow the attenuation of the intermediate frequencies of the wavelengths of the sound waves of the exhaust gases; and means for allowing the exhaust gases flowing in the first and second gas flow channels to expand in the enclosed space outside the gas flow passage, to substantially eliminate the high frequency wavelengths of the gas. the sound waves in the exhaust gases.

2. The improved high-performance silencer according to claim 1, characterized in that the system allowing the flow includes a variety of relatively small perforations in the gas flow path, whereby the perforations allow the gases of exhaust escape generally laterally with respect to the longitudinal axis of the channels.

3. The improved high-performance silencer according to claim 2, characterized in that the system allowing the flow includes a sound-absorbing material that is disposed within the enclosed space of the envelope, outside the path of the gas flow passage .

4. The improved high-performance silencer according to claim 1, characterized in that the second end cap includes two openings that are spaced equidistant from the longitudinal centerline; and wherein the first end cap has an opening that is aligned with respect to the longitudinal center line.

5. The high performance, improved muffler, according to claim 1, characterized in that the first and second end caps, each include an opening; and wherein at least one of the openings is separated from the longitudinal center line.

6. The improved high performance silencer according to claim 5, characterized in that both openings are separated in relation to the longitudinal center line.

7. The improved high performance muffler, according to claim 1, characterized in that the casing includes a first side wall, a second side wall, an upper wall and a lower wall; wherein the first side wall, the second side wall, the top wall and the bottom wall extend between the first and second end cap; wherein the passage includes an upper wall, which is adjacent to the upper wall, and a lower wall, which is adjacent to the lower wall and which is separated from the upper wall; wherein the top and bottom walls extend between the first and second side wall and between the first and second end cap; wherein the flow routing assembly is arranged in the space between the top, bottom, and side walls and between the inlet and outlet chambers.

8. The enhanced high performance silencer, according to claim 7, characterized in that the first and second side walls are generally parallel; where the upper and lower walls are generally parallel; and wherein the system allowing the flow has a diversity of relatively small perforations in the upper and lower walls through which the perforations allow the exhaust gases to exit generally laterally from the space between the upper and lower walls.

9. The enhanced high performance muffler according to claim 7, characterized in that the flow directing assembly includes a first router and a second router; wherein the first and second routers each have generally a triangular conformation on their transverse axis by walls defining an apex and walls defining a base; wherein the apex of the first router is disposed adjacent to the entrance chamber; wherein the apex of the second router is arranged adjacently in relation to the outlet chamber; wherein the walls of the base of the first and second routers face, but separate from one another; wherein the first channel is defined between the side walls, the top wall and the walls defining the apex that are adjacent in relation to the top wall; wherein the second channel is defined between the side walls, the bottom wall and the walls defining the apex that are adjacent in relation to the bottom wall; and wherein the intermediate chamber is defined, in part, between the side walls and the base walls of the first and second routers.

10. The improved high performance muffler according to claim 9, characterized in that the base walls of the first and second routers include a variety of openings which allow the exhaust gases to flow into the first and second routers; and wherein the intermediate chamber includes the interior spaces of the first and second routers as defined by the side walls, the walls defining the apex and the walls of the base.

11. The improved high-performance silencer according to claim 10, characterized in that the side walls are generally parallel; wherein the upper and lower walls are generally parallel; and wherein the system allowing the flow includes a plurality of relatively small perforations, and generally uniformly spaced from the upper and lower walls whereby the perforations allow the exhaust gases to generally exit laterally from the chambers of entry and exit and of the first and second channels; and wherein the sides defining the channel of the top, bottom and defining the apex walls are substantially smooth.

12. The improved high performance silencer according to claim 11, characterized in that the system allowing the flow includes sound absorbing materials that are arranged in the closed space of the envelope outside the path of the gas flow passage.

13. The high-performance muffler, improved > according to claim 11, characterized in that the second end cap includes two openings, which are spaced equidistant from the longitudinal center line, and wherein the first end cap has an opening, which is aligned with respect to the longitudinal center line.

14. The improved high performance silencer according to claim 11, characterized in that the first and second end caps each have an opening; and wherein at least one of the openings is separated in relation to the longitudinal center line.

15. The improved high-performance silencer according to claim 14, characterized in that both openings are separated in relation to the longitudinal center line.

16. The improved high-performance silencer according to claim 11, characterized in that the opening in the first end cap is spaced apart from the longitudinal centerline selectively towards one of the upper or lower walls; and wherein the opening in the second end cap is spaced apart from the longitudinal center line selectively towards one of the lower or upper walls. SUMMARY OF THE INVENTION The improved high-performance silencer (12) is used to attenuate the sound waves of the exhaust gases of internal combustion engines and the like, and has a casing (1) that includes the space closed by side walls, an upper wall (16). ), a lower wall (18) and terminal inlet and outlet covers (26, 28). The casing (14) also has a defined passageway for the flow of the exhaust gases, which extends between the end caps (26, 28), which is delimited by upper and lower walls inside the casing and side walls, and including inlet and outlet chambers that are adjacent to the inlet and outlet connection end caps, respectively. Two channels for the gas flow that separate. A gas flow directing assembly (56), disposed between the side walls and the top and bottom walls, which defines two separate channels for gas flow. The channels for the gas flow have a smooth and uniform cross section, and their lengths are substantially equal. The gas flow routing assembly (56) divides the exhaust gases flowing into the gas flow inlet chamber, in two gas streams without substantial restriction and of equal volumes, and also defines an intermediate chamber, which communicates with the channels for the gas flow, and which is intermediate between its ends, to allow, for its attenuation, that the Exhaust gases expand and mix when flowing in the channels. The perforations in the upper and lower walls allow to attenuate the sound waves of the exhaust gases, with sound absorption materials (91, 102) arranged in the enclosed space of the envelope around the passage of the gas flow .