US20090127022A1 - Passive valve and resonator assembly for vehicle exhaust system - Google Patents

Passive valve and resonator assembly for vehicle exhaust system Download PDF

Info

Publication number
US20090127022A1
US20090127022A1 US11964062 US96406207A US2009127022A1 US 20090127022 A1 US20090127022 A1 US 20090127022A1 US 11964062 US11964062 US 11964062 US 96406207 A US96406207 A US 96406207A US 2009127022 A1 US2009127022 A1 US 2009127022A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
pipe
exhaust
system according
inlet
exhaust system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11964062
Inventor
Kwin Abram
Ivan Arbuckle
Kamilla Iskenderova
James Egan
Dennis Shaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMCON Technologies LLC
Original Assignee
EMCON Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/02Silencing apparatus characterised by method of silencing by using resonance
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D9/00Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D9/00Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1005Details of the flap
    • F02D9/1025Details of the flap the rotation axis of the flap being off-set from the flap center axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D9/00Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure

Abstract

An exhaust system includes first and second exhaust components with an inter-pipe that fluidly connects an outlet of the first exhaust component to an inlet of the second exhaust component. A passive valve is mounted within the inter-pipe. The second exhaust component defines an internal cavity that is at least partially packed with a high frequency absorption material and cooperates with the passive valve to effectively attenuate low and high frequency noise.

Description

    RELATED APPLICATIONS
  • This application claims priority to provisional application No. 60/989,508 filed on Nov. 21, 2007.
  • TECHNICAL FIELD
  • The subject invention relates to a passive valve and resonator configuration in a vehicle exhaust system, and more particularly relates to a passive valve in combination with a packed resonator.
  • BACKGROUND OF THE INVENTION
  • Exhaust systems are widely known and used with combustion engines. Typically, an exhaust system includes exhaust tubes that convey hot exhaust gases from the engine to other exhaust system components, such as mufflers, resonators, etc. Mufflers and resonators include acoustic chambers that cancel out sound waves carried by the exhaust gases. Although effective, these components are often relatively large in size and provide limited nose attenuation.
  • Passive valves have been used in a muffler to provide further noise attenuation. However, the proposed valves have numerous drawbacks that limit their widespread use in a variety of applications. One disadvantage with passive valves is their limited use in high temperature conditions. Another disadvantage with known passive valve configurations is that these valves do not effectively attenuate low frequency noise. Further, additional challenges are presented when these types of valves are used in exhaust systems with multiple mufflers.
  • Attempts have been made to improve low frequency noise attenuation without using passive valves by either increasing muffler volume or increasing backpressure. Increasing muffler volume is disadvantageous from a cost, material, and packaging space perspective. Increasing backpressure can adversely affect engine power. Thus, solutions are needed to more effectively incorporate passive valves within an overall exhaust system.
  • Still other attempts have been made to use the passive valve in the exhaust system at a location outside of a muffler. For example, the passive valve has been used within an exhaust pipe with a by-pass configuration. The passive valve includes a flapper valve body or vane that is positioned within the exhaust pipe, with the vane being pivotable between an open position and a closed position. The passive valve is spring biased toward the closed position, and when exhaust gas pressure is sufficient to overcome this spring bias, the vane is pivoted toward the open position. In by-pass configurations, the vane provides 100% coverage, i.e. complete blockage, of the exhaust component when in the closed position. When closed, exhaust gases can flow outside of the exhaust pipe that houses the vane via a by-pass pipe that is connected to the exhaust pipe at locations upstream and downstream of the vane. The vane is generally configured such that, during pivotal movement, edges of the vane do not contact inner surfaces of the exhaust component. While use of such a valve improves low frequency noise attenuation, there is additional flow noise caused by turbulence generated at edges of the vane. Thus, while using the passive valve outside of the muffler has addressed certain problems, it has raised additional noise challenges that need to be addressed.
  • Therefore, there is a need to provide a passive valve arrangement that can effectively attenuate low frequency noises while also addressing additional noise issues introduced by the use of the passive valve itself. This invention addresses those needs while avoiding the shortcomings and drawbacks of the prior art.
  • SUMMARY OF THE INVENTION
  • A vehicle exhaust system includes first and second exhaust components with an inter-pipe that fluidly connects an outlet of the first exhaust component to an inlet of the second exhaust component. A passive valve is mounted within the inter-pipe. The second exhaust component defines an internal cavity that is at least partially packed with a high frequency absorption material. This packed configuration cooperates with the passive valve to effectively attenuate low and high frequency noise.
  • In one example, the first and the second exhaust components comprise first and second mufflers or resonators and the inter-pipe comprises a sole exhaust gas flow path between the first outlet and the second inlet.
  • In one example, the first exhaust component has a first inlet and a first outlet, and the second exhaust component defines an internal cavity that has a second inlet and a second outlet. The second inlet and the second outlet cooperate to define an internal flow path through the second exhaust component. The internal flow path occupies a portion of the internal cavity leaving a remaining portion. The remaining portion of the internal cavity is completely packed with a high frequency absorption material. The inter-pipe connects the first outlet with the second inlet, and the passive valve is mounted within the inter-pipe.
  • In one example, the second exhaust component includes a pipe that connects the second inlet to the second output to define the internal flow path. The pipe is defined by a pipe diameter and the passive valve is mounted within the inter-pipe at a specified distance from the second inlet of the second exhaust component. In one example, this specified distance is a distance that is at least four times the pipe diameter of the internal flow path.
  • In one example, the pipe includes a perforated section and the high frequency absorption material is positioned within the internal cavity to contact at least a portion of the perforated section. In one example, the high frequency absorption material contacts an entire length of the perforated section.
  • The above-described combination of a passive valve and an associated packed muffler cooperate to effectively attenuate low and high frequency noises. The use of the passive valve within a non-bypass inter-pipe provides very effective low frequency noise attenuation while the use of the packed rear positioned muffler addresses noise issues created due to the passive valve location and configuration. These and other features of the present invention can be best understood from the following specification and drawings, the following of which is a brief description.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a perspective view of an exhaust pipe component and passive assembly.
  • FIG. 2 shows one example of a passive valve in a vehicle exhaust system.
  • FIG. 3 shows a cross-sectional view of a rearmost exhaust component from FIG. 2.
  • FIG. 4 shows a schematic view of a mounting location of the passive valve in relation to the exhaust component of FIG. 3.
  • FIG. 5 is a schematic view of one example of a packed exhaust component with a perforated pipe.
  • FIG. 6 is a schematic view of another example of a packed exhaust component with a tuning pipe.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • As shown in FIG. 1, an exhaust component, such as an exhaust tube or pipe 10 includes an exhaust throttling valve, referred to as a passive valve assembly 12. The passive valve assembly 12 is movable between an open position where there is minimal blockage of an exhaust gas flow path 16 and a closed position where a substantial portion of the exhaust gas flow path 16 is blocked. The passive valve assembly 12 is resiliently biased toward the closed position and is moved toward the open position when exhaust gas flow generates a pressure sufficient enough to overcome the biasing force.
  • In the example shown, the exhaust pipe 10 comprises a single tube body 14 that defines the exhaust gas flow path 16. The passive valve assembly 12 includes a valve body or vane 18 that blocks a portion of the exhaust gas flow path 16 when in the closed position. As discussed above, the vane 18 is pivoted toward the open position to minimize blockage of the exhaust gas flow path 16 in response to pressure exerted against the vane 18 by exhaust gases.
  • In one example, the vane 18 is fixed to a shaft 20 with a tang or bracket 22. A slot 24 is formed within an outer surface of the tube body 14. A housing 26, shown in this example as a square metal structure, is received within this slot 24 and is welded to the tube body 14. Other housing configurations could also be used. The shaft 20 is rotatably supported within the housing 26 by first 28 and second 30 bushings or bearings. In the example shown, the bracket 22 comprises a piece of sheet metal that has one portion welded to the shaft 20 and another portion that extends outwardly from the housing 26 and is welded to the vane 18. Thus, the vane 18 and the shaft 20 pivot together about an axis A that is defined by the shaft 20. The bracket 22 is just one example of how the shaft 20 can be attached to the vane 18, it should be understood that other attachment mechanisms could also be used.
  • The first bushing 28 is positioned generally at a first shaft end 32. The first bushing 28 comprises a sealed interface for the first shaft end 32. The shaft 20 includes a shaft body 34 that has a first collar 36 and a second collar 38. The first bushing 28 includes a first bore that receives the first shaft end 32 such that the first collar 36 abuts directly against an end face of the first bushing 28 to provide a sealed interface. As such, exhaust gases cannot leak out of the first bushing 28 along a path between the shaft 20 and first bushing 28.
  • The second bushing 30 includes a second bore through which the shaft body 34 extends to a second shaft end 40. The second collar 38 is located axially inboard of the second bushing 30. The shaft 20 extends through the second bore to an axially outboard position relative to the second bushing 30. A resilient member, such as a spring 42 for example, is coupled to the second shaft end 40 with a spring retainer 44. The spring retainer 44 includes a first retainer piece 46 that is fixed to the housing 26 and a second retainer piece 48 that is fixed to the second shaft end 40. One spring end 50 is associated with housing 26 via the first retainer piece 46 and a second spring end (not viewable in FIG. 1 due to the spring retainer 44) is associated with the shaft 20 via the second retainer piece 48.
  • The passive valve assembly 12 is advantageously positioned within a vehicle exhaust system at a certain positional relationship to other exhaust components to provide a significant acoustic advantage for overall noise attenuation. FIG. 2 schematically shows a vehicle exhaust system 60 that includes at least one first resonator or muffler 62 and at least one second resonator or muffler 64. The first muffler 62 has an inlet 66 that receives exhaust gas flow from an engine as indicated at 68. The first muffler 62 includes an outlet 70 that directs exhaust gases to an inter-pipe 72.
  • The inter-pipe 72 fluidly connects the outlet 70 of the first muffler to an inlet 74 of the second muffler 64. The second muffler 64 includes an outlet 76 that is fluidly connected to a tailpipe 78. The inter-pipe 72 can be a single tube or can be comprised of multiple tube portions connected together to form a single tube between the first 62 and second 64 mufflers. Similarly, the tailpipe 78 can be a single tube or can be comprised of multiple tube portions connected together to form a single flow gas exit from the exhaust system 60.
  • The inter-pipe 72 forms the sole exhaust gas flow path between the first 62 and second 64 mufflers. In other words, there is no by-pass flow option within the fluid connections between the first 62 and second 64 mufflers. As such, the inter-pipe 72 extends from a first end 80 to a second end 82 to define an overall pipe length referred to as a developed length of the pipe. The first 80 and second 82 ends need not be co-axial, thus the developed length of the pipe can be comprised of a single straight section of pipe or can be comprised of a combination of straight and curved sections of pipe having their lengths added together.
  • The passive valve assembly 12 is mounted external to the first 62 and second mufflers 64 and within the inter-pipe 72. The passive valve assembly 12 is positioned within the inter-pipe 72 between the first 80 and second 82 ends at a specified location in relation to the second muffler 64. This will be discussed in greater detail below.
  • FIG. 3 shows a cross-sectional view of the second muffler 64. The second muffler 64 defines an internal cavity 90 that has a single inlet 74 and a single outlet 76. The inlet 74 and outlet 76 cooperate to define the sole flow path 92 within the second muffler 64. This flow path 92 occupies a specified portion of the internal cavity 90 leaving a remaining portion that is not occupied by the flow path 92. This remaining portion is packed with a high frequency absorption material 94. In one example a fiber-based material is used, however, any suitable material for attenuating high frequency noise can be used.
  • In the example shown, the sole flow path 92 is contained within a pipe body 96 that extends from the inlet 74 to the outlet 76, and the high frequency absorption material 94 completely fills the internal cavity 90 to completely surround the pipe body 96. This completely packed configuration is the most common configuration and is the most efficient configuration from an assembly and manufacture perspective.
  • As shown in FIG. 4, the passive valve assembly 12 is mounted within the inter-pipe 72 at a specified location relative to the inlet 74 of the second muffler 64 as indicated at 98. The pipe body 96 is defined by a pipe diameter D. This pipe diameter D can vary depending upon the type of vehicle application and/or other exhaust system characteristics. The passive valve assembly 12 is positioned at a distance that is at least four times the pipe diameter D that defines the flow path 92. By locating the passive valve assembly 12 in such a relation to the inlet 74 of the packed second muffler 64, absorption of flow noise is maximized due to distances involved in generate of flow noise from a geometric step change.
  • In another example shown in FIG. 5, a pipe 100 extends from the inlet 74 to the outlet 76 to define a sole flow path 102. The pipe 100 includes a perforated section 104. The perforated section 104 is positioned within the internal cavity 90 and extends along a portion of an overall length of the pipe 100. As such, a length L of the perforated section 104 is less than the overall length of the pipe 100. The perforated section 104 at least partially extends about an outer circumference of the pipe 100, and in the example shown, extends entirely about the outer circumference of the pipe 100.
  • The high frequency absorption material 94 is positioned with the internal cavity 90 to contact at least a portion of the perforated section 104 to provide a packed configuration. In the example shown, the high frequency absorption material 94 is positioned to contact the entire length L of the perforated section 104. The high frequency absorption material 94 can comprise material that is packed around the pipe to provide this contact, or the high frequency absorption material 94 can comprise a mat that is wrapped around the perforated section 104.
  • In the example shown in FIG. 5, the high frequency absorption material 94 also contacts the pipe 100 along non-perforated sections 106. Further, the pipe 100 can also include sections within the internal cavity 90 that are not in contact with high frequency absorption material 94. However, as described above, in each example the high frequency absorption material 94 does contact the entire length L of the perforated section 104 to provide the most effective attenuation of high frequency noise.
  • In the example shown in FIG. 6, a tuning tube 108 is connected to the pipe 100 at one of the non-perforated sections 106 to provide additional noise attenuation. In this example, the high frequency absorption material 94 is not at a location of the pipe 100 that is contact with high frequency absorption material 94. However, high frequency absorption material 94 could also be used on the pipe 100 at the tuning tube location. Further, the tuning tube 108 could also be used in the configuration shown in FIGS. 2-4.
  • For the configurations set forth in FIGS. 5 and 6, the passive valve assembly 12 is mounted within the inter-pipe 72 at a specified location relative to the inlet 74 of the second muffler 64 as described above in the examples of FIGS. 2-4. Also, the pipe body 96 shown in FIGS. 3 and 4 could include a perforated section in combination with a completely packed internal cavity.
  • The use of a packed high frequency muffler downstream of a throttling, spring-biased passive valve provides an effective configuration for attenuating noise. The passive valve assembly 12, which is effective for attenuating low frequency noises, cooperates with the packed muffler, which is effective for attenuating high frequency noise, to provide an exhaust system with significantly improved noise attenuation capability.
  • Although a preferred embodiment of this invention has been disclosed, a worker of ordinary skill in this art would recognize that certain modifications would come within the scope of this invention. For that reason, the following claims should be studied to determine the true scope and content of this invention.

Claims (24)

  1. 1. A vehicle exhaust system comprising:
    a first exhaust component having a first inlet and a first outlet;
    a second exhaust component positioned downstream of said first exhaust component, wherein said second exhaust component defines an internal cavity with a second inlet and a second outlet, said internal cavity being at least partially packed with a high frequency absorption material;
    an inter-pipe connecting said first outlet with said second inlet; and
    a passive valve mounted within said inter-pipe.
  2. 2. The vehicle exhaust system according to claim 1 wherein said inter-pipe comprises the sole exhaust gas flow path between said first outlet and said second inlet.
  3. 3. The vehicle exhaust system according to claim 1 wherein said first and said second exhaust components comprise first and second resonators.
  4. 4. The vehicle exhaust system according to claim 3 including a tailpipe in fluid communication with said second outlet.
  5. 5. The vehicle exhaust system according to claim 1 wherein said second inlet and said second outlet cooperate to define a flow path through said second exhaust component.
  6. 6. The vehicle exhaust system according to claim 5 wherein said flow path is defined by a pipe diameter and wherein said passive valve is mounted within the inter-pipe at a distance from said second inlet of said second exhaust component that is at least four times said pipe diameter.
  7. 7. The vehicle exhaust system according to claim 6 wherein said flow path comprises a sole flow path through said second exhaust component.
  8. 8. The vehicle exhaust system according to claim 7 wherein said sole flow path occupies a portion of said internal cavity of said second exhaust component leaving a remaining portion of said internal cavity, and wherein said remaining portion of said internal cavity is completely packed with said high frequency absorption material.
  9. 9. The vehicle exhaust system according to claim 1 wherein said passive valve comprises a vane supported on a shaft for pivotable movement within said inter-pipe between an open position and a closed position, and a spring that biases said vane toward said closed position, said vane being pivotal from said closed position towards said open position in response to an exhaust gas flow that exceeds a biasing force of said spring.
  10. 10. The vehicle exhaust system according to claim 1 including a pipe extending from said second inlet to said second outlet to define a sole flow path through said second exhaust component, said pipe including a perforated section positioned within said internal cavity, and wherein said high frequency absorption material is positioned to contact at least a portion of said perforated section to provide a packed second exhaust component.
  11. 11. The vehicle exhaust system according to claim 10 wherein said high frequency absorption material contacts an entire length of said perforated section to provide said packed second exhaust component.
  12. 12. The vehicle exhaust system according to claim 10 including at least one tuning tube positioned within said internal cavity and in communication with said pipe.
  13. 13. A vehicle exhaust system comprising:
    a first exhaust component having a first inlet and a first outlet;
    a second exhaust component defining an internal cavity having a second inlet and a second outlet that cooperate to define an internal flow path through said second exhaust component,;
    a pipe extending from said second inlet to said second outlet to define said internal flow path as a sole flow path through said second exhaust component;
    high frequency absorption material positioned within said internal cavity to contact at least a portion of said pipe to provide a packed second exhaust component;
    an inter-pipe connecting said first outlet with said second inlet; and
    a passive valve mounted within said inter-pipe.
  14. 14. The vehicle exhaust system according to claim 13 wherein said pipe occupies a portion of said internal cavity leaving a remaining portion, and wherein said remaining portion of said internal cavity is completely packed with a high frequency absorption material to provide said packed second exhaust component.
  15. 15. The vehicle exhaust system according to claim 14 wherein said first and said second exhaust components comprise first and second mufflers and wherein said inter-pipe comprises a sole exhaust gas flow path between said first outlet and said second inlet.
  16. 16. The vehicle exhaust system according to claim 13 wherein said pipe is defined by a pipe diameter and wherein said passive valve is mounted within said inter-pipe at a distance from said second inlet of said second exhaust component that is at least four times said pipe diameter.
  17. 17. The vehicle exhaust system according to claim 13 including a tailpipe fluidly connected to said second outlet of said second muffler.
  18. 18. The vehicle exhaust system according to claim 13 wherein said passive valve comprises a vane supported on a shaft for pivotable movement within said inter-pipe between an open position and a closed position, and a spring that biases said vane toward said closed position, said vane being pivotal from said closed position towards said open position in response to an exhaust gas flow that exceeds a biasing force of said spring.
  19. 19. The vehicle exhaust system according to claim 13 wherein said pipe includes a perforated section positioned within said internal cavity, and wherein said high frequency absorption material is positioned to contact at least a portion of said perforated section to provide said packed second exhaust component.
  20. 20. The vehicle exhaust system according to claim 19 wherein said high frequency absorption material contacts an entire length of said perforated section to provide said packed second exhaust component.
  21. 21. The vehicle exhaust system according to claim 13 wherein said first exhaust component comprises a first resonator and said packed second exhaust component comprises a packed second resonator, and wherein said inter-pipe comprises a sole exhaust gas flow path between said first outlet and said second inlet, said passive valve being mounted within said inter-pipe at a predetermined fixed distance from said second inlet of said packed second resonator.
  22. 22. The vehicle exhaust system according to claim 21 wherein said pipe of said packed second resonator is defined by a pipe diameter, and wherein said predetermined fixed distance is four times said pipe diameter.
  23. 23. The vehicle exhaust system according to claim 1 wherein said first exhaust component comprises a first resonator and said second exhaust component comprises a packed second resonator, and wherein said inter-pipe comprises a sole exhaust gas flow path between said first outlet and said second inlet, said passive valve being mounted within said inter-pipe at a predetermined fixed distance from said second inlet of said packed second resonator.
  24. 24. The vehicle exhaust system according to claim 23 including a pipe extending from said second inlet to said second outlet to define a sole internal flow path through said packed second resonator, said pipe being defined by a pipe diameter, and wherein said predetermined fixed distance is four times said pipe diameter.
US11964062 2007-11-21 2007-12-26 Passive valve and resonator assembly for vehicle exhaust system Abandoned US20090127022A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US98950807 true 2007-11-21 2007-11-21
US11964062 US20090127022A1 (en) 2007-11-21 2007-12-26 Passive valve and resonator assembly for vehicle exhaust system

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US11964062 US20090127022A1 (en) 2007-11-21 2007-12-26 Passive valve and resonator assembly for vehicle exhaust system
KR20107012712A KR20100105593A (en) 2007-11-21 2008-11-18 Exhaust valve assembly
PCT/US2008/083866 WO2009067430A3 (en) 2007-11-21 2008-11-18 Exhaust valve assembly
EP20080851763 EP2232031A2 (en) 2007-11-21 2008-11-18 Exhaust valve assembly
CN 201410045177 CN103790678B (en) 2007-11-21 2008-11-18 Vehicle exhaust system
CN 200880001337 CN101583784B (en) 2007-11-21 2008-11-18 Exhaust valve assembly
US13852230 US8955641B2 (en) 2007-11-21 2013-03-28 Passive valve and resonator assembly for vehicle exhaust system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13852230 Continuation US8955641B2 (en) 2007-11-21 2013-03-28 Passive valve and resonator assembly for vehicle exhaust system

Publications (1)

Publication Number Publication Date
US20090127022A1 true true US20090127022A1 (en) 2009-05-21

Family

ID=40640528

Family Applications (7)

Application Number Title Priority Date Filing Date
US11953930 Active 2028-01-21 US7628250B2 (en) 2007-11-21 2007-12-11 Passive valve assembly for vehicle exhaust system
US11964062 Abandoned US20090127022A1 (en) 2007-11-21 2007-12-26 Passive valve and resonator assembly for vehicle exhaust system
US11969936 Abandoned US20090126356A1 (en) 2007-11-21 2008-01-07 Offset passive valve for vehicle exhaust system
US11970812 Abandoned US20090126357A1 (en) 2007-11-21 2008-01-08 Passive valve assembly for vehicle exhaust system
US11972049 Abandoned US20090126358A1 (en) 2007-11-21 2008-01-10 Passive valve assembly with elongated vane
US12013652 Active 2034-02-17 US9121315B2 (en) 2007-11-21 2008-01-14 Passive valve with stop pad
US13852230 Active 2028-01-10 US8955641B2 (en) 2007-11-21 2013-03-28 Passive valve and resonator assembly for vehicle exhaust system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US11953930 Active 2028-01-21 US7628250B2 (en) 2007-11-21 2007-12-11 Passive valve assembly for vehicle exhaust system

Family Applications After (5)

Application Number Title Priority Date Filing Date
US11969936 Abandoned US20090126356A1 (en) 2007-11-21 2008-01-07 Offset passive valve for vehicle exhaust system
US11970812 Abandoned US20090126357A1 (en) 2007-11-21 2008-01-08 Passive valve assembly for vehicle exhaust system
US11972049 Abandoned US20090126358A1 (en) 2007-11-21 2008-01-10 Passive valve assembly with elongated vane
US12013652 Active 2034-02-17 US9121315B2 (en) 2007-11-21 2008-01-14 Passive valve with stop pad
US13852230 Active 2028-01-10 US8955641B2 (en) 2007-11-21 2013-03-28 Passive valve and resonator assembly for vehicle exhaust system

Country Status (2)

Country Link
US (7) US7628250B2 (en)
CN (1) CN101583784B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110005860A1 (en) * 2009-07-13 2011-01-13 Kwin Abram Exhaust component with reduced pack
US8857561B2 (en) 2010-12-01 2014-10-14 Faurecia Emissions Control Technologies Exhaust valve combined with active noise control system
US9540995B2 (en) 2012-03-06 2017-01-10 KATCON USA, Inc. Exhaust valve assembly
US9624837B2 (en) 2012-05-08 2017-04-18 Faurecia Emissions Control Technologies, Usa, Llc Adaptive valve spring retainer

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8468813B2 (en) * 2007-03-16 2013-06-25 Tenneco Automotive Operating Company Inc. Snap-action valve for exhaust system
US9376947B2 (en) 2007-03-29 2016-06-28 Faurecia Emissions Control Technologies Usa, Llc Hybrid valve for attenuation of low frequency noise
US20090319160A1 (en) * 2008-06-24 2009-12-24 Callahan Joseph E Active exhaust valve control strategy for improved fuel consumption
US20100025146A1 (en) * 2008-07-31 2010-02-04 Shu-Li Ho Baffle plate operating mechanism for muffler
ES2363296T3 (en) * 2008-12-17 2011-07-29 MAGNETI MARELLI S.p.A. Exhaust system of an internal combustion engine.
US8381401B2 (en) * 2009-04-16 2013-02-26 Tenneco Automotive Operating Company Inc. Method of installing rotatable flapper valve to an interior of a conduit
US8191572B2 (en) * 2009-04-16 2012-06-05 Tenneco Automotive Operating Company Inc. Snap action valve with bumper pad
US7896130B2 (en) * 2009-05-22 2011-03-01 Tenneco Automotive Operating Company Inc. Snap action valve with inertia damper
US20100313554A1 (en) * 2009-06-10 2010-12-16 Kwin Abram Adaptive valve for exhaust system
US8511428B2 (en) * 2010-07-28 2013-08-20 Inoac Corporation Noise attenuator and vehicle air intake duct provided therewith
FR2965296B1 (en) * 2010-09-29 2012-10-26 Faurecia Sys Echappement Valve for a silent exhaust line of a motor vehicle
KR20140077039A (en) * 2012-12-13 2014-06-23 현대자동차주식회사 Variable valve appratus and muffler provided with the same
US8657065B1 (en) 2012-12-14 2014-02-25 Tenneco Automotive Operating Company Inc. Exhaust valve with resilient spring pad
DE102013223137A1 (en) * 2013-11-13 2015-05-28 Mahle International Gmbh Fresh air system for an internal combustion engine
CN104847936A (en) * 2014-02-14 2015-08-19 上海天纳克排气系统有限公司 Control valve, motor vehicle exhaust system comprising same and motor vehicle
FR3020110B1 (en) * 2014-04-22 2017-08-18 Valeo Systemes De Controle Moteur fluid flow valve
US9464559B2 (en) 2015-02-04 2016-10-11 Middleville Tool & Die Co. Passive exhaust valve assembly and forming method
CN104819044B (en) * 2015-03-13 2018-06-12 张丹州 Tuning exhaust pipe
FR3041692A1 (en) * 2015-09-30 2017-03-31 Faurecia Systemes D'echappement Exhaust line element comprising a valve with Thrust REPORTED
US9605581B1 (en) 2015-12-24 2017-03-28 Middleville Tool & Die Co. Passive exhaust valve with floating spring stop
US9982793B2 (en) 2016-08-05 2018-05-29 Tenneco Automotive Operating Company Inc. Passive exhaust valve with dual torsion spring
US9982794B2 (en) * 2016-08-05 2018-05-29 Tenneco Automotive Operating Company Inc. Passive exhaust valve with external torsion spring

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239091A (en) * 1977-09-16 1980-12-16 Negrao Paulo M Muffler
US5245140A (en) * 1992-04-20 1993-09-14 Wu Kan Chiao Muffler
US5655367A (en) * 1992-07-07 1997-08-12 Centre National De La Recherche Scientifique (Cnrs) Inlet or exhaust line for a reciprocating machine
US5726397A (en) * 1994-10-19 1998-03-10 Honda Giken Kogyo Kabushiki Kaisha Vehicle exhaust device
US5801343A (en) * 1993-11-09 1998-09-01 Futaba Industrial Co., Ltd. Muffler for internal combustion engine
US20020033302A1 (en) * 2000-09-11 2002-03-21 Calsonic Kansei Corporation & Nissan Motor Co., Ltd. Controllable muffler system for internal combustion engine
US20020144860A1 (en) * 2000-10-17 2002-10-10 Bbnt Solutions Llc System and method for phased noise attenuation
US6467571B2 (en) * 2000-12-11 2002-10-22 Nakagawa Sangyo Co., Ltd. Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof
US6581721B2 (en) * 2000-09-20 2003-06-24 Calsonic Kansei Corporation Valve for a control muffler

Family Cites Families (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459797A (en) * 1921-08-16 1923-06-26 Parolini Cesare Silencer for internal-combustion engines
US2711188A (en) * 1951-05-10 1955-06-21 Chapman Valve Mfg Co Check valve
US2859772A (en) * 1954-12-07 1958-11-11 Studebaker Packard Corp Heat control valve
US3335563A (en) * 1965-10-11 1967-08-15 Tilling Stevens Ltd Internal combustion engines
US3625249A (en) * 1970-02-26 1971-12-07 James F Karr Eccentric damper-type valve for controlled action
US3780826A (en) * 1972-08-09 1973-12-25 Tenneco Inc Gas silencing structure
US3853200A (en) * 1973-03-14 1974-12-10 Tenneco Inc Method of determining compliance poles in exhaust system
US3807527A (en) * 1973-03-14 1974-04-30 Tenneco Inc Pulse converter for exhaust system
US4501341A (en) * 1981-03-12 1985-02-26 Jones Adrian D Low frequency muffler
JPH0134650Y2 (en) * 1984-04-13 1989-10-23
US4586534A (en) * 1984-04-23 1986-05-06 Daniel Industries Check valve mechanism
JPS61138813A (en) * 1984-12-08 1986-06-26 Nissan Motor Co Ltd Exhaust noise reducer for car engine
US4880078A (en) * 1987-06-29 1989-11-14 Honda Giken Kogyo Kabushiki Kaisha Exhaust muffler
US4862910A (en) * 1988-09-30 1989-09-05 Keystone International, Inc. Check valve with disc centering device
US5355673A (en) * 1992-11-18 1994-10-18 Sterling Robert E Exhaust valve
US5392812A (en) * 1992-12-04 1995-02-28 General Electric Company Offset hinge flapper valve
US5406790A (en) * 1992-12-11 1995-04-18 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an engine
JP2606154Y2 (en) * 1993-01-27 2000-09-25 ボッシュ ブレーキ システム株式会社 Butterfly Valves
US5305787A (en) * 1993-02-03 1994-04-26 C & S Valve Company Disk valve with improved disk mounting
JP2583182B2 (en) * 1993-02-25 1997-02-19 株式会社アペックス Muffler for an internal combustion engine
JP2683880B2 (en) * 1994-01-31 1997-12-03 博 横田 Composite actuated anhydrous 撃逆 check valve device
US5614699A (en) * 1994-05-09 1997-03-25 Nissan Motor Co., Ltd. Automobile exhaust noise suppressor
US5607140A (en) * 1995-08-25 1997-03-04 Bs&B Safety Systems, Inc. Rotatable valve assembly
US5630571A (en) * 1995-10-16 1997-05-20 General Motors Corporation Exhaust flow control valve
US5676110A (en) * 1996-03-14 1997-10-14 Meneely; Vincent Allan Exhaust brake with offset butterfly and method of reducing back pressure therein
JP3424471B2 (en) * 1996-05-16 2003-07-07 日産自動車株式会社 Automotive exhaust muffler
US5984045A (en) * 1997-02-14 1999-11-16 Nissan Motor Co., Ltd. Engine exhaust noise suppressor
US6179096B1 (en) * 1997-11-12 2001-01-30 Diesel Engine Retarders, Inc. Exhaust brake variable bypass circuit
US5979870A (en) * 1998-03-02 1999-11-09 Tapco International, Inc. Butterfly value with offset stem
US6179588B1 (en) * 1998-10-01 2001-01-30 Industrial Technology Research Institute Check valve device for a scroll machine
US6123318A (en) * 1999-03-01 2000-09-26 Visteon Global Technologies, Inc. Throttle body module having improved blade to ledge sealing
JP2000257418A (en) * 1999-03-05 2000-09-19 Sango Co Ltd Exhaust silencer
DE19934113A1 (en) * 1999-07-21 2001-01-25 Bosch Gmbh Robert Flap valve has valve flap mounted on flap shaft in gas flow tube so that in its closed position the normal to its surface is coaxial to the tube axis or at acute angle to it
JP3521830B2 (en) 2000-02-14 2004-04-26 ミネベア株式会社 Alarm device in a portable communication device
US6283448B1 (en) * 2000-04-19 2001-09-04 Daniel Webster Denton Offset butterfly valve
WO2002010579A1 (en) 2000-07-28 2002-02-07 Visteon Global Technologies, Inc An air intake arrangement for an internal combustion engine
JP2002089257A (en) * 2000-09-11 2002-03-27 Calsonic Kansei Corp Valve for control muffler and valve element assembling method of valve for control muffler
US6553963B1 (en) * 2000-10-17 2003-04-29 Bombardier Motor Corporation Of America Throttle assembly with oil seal bushing
WO2002061244A1 (en) * 2001-01-29 2002-08-08 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Exhaust emission control device of internal combustion engine
US6446750B1 (en) * 2001-03-16 2002-09-10 Owens Corning Fiberglas Technology, Inc. Process for filling a muffler shell with fibrous material
DE10231056A1 (en) * 2002-07-10 2004-02-05 J. Eberspächer GmbH & Co. KG exhaust system
US6694727B1 (en) * 2002-09-03 2004-02-24 Arvin Technologies, Inc. Exhaust processor
JP4110024B2 (en) * 2003-03-31 2008-07-02 本田技研工業株式会社 The fuel injection system of an engine in a small vehicle
CA2461325C (en) * 2003-03-31 2007-09-25 Honda Motor Co., Ltd. Intake apparatus for engine
JP4675887B2 (en) * 2003-05-02 2011-04-27 オウェンス コーニング Muffler with improved acoustic performance at low frequencies in
US7090048B2 (en) * 2003-09-26 2006-08-15 General Motors Corporation Method and apparatus for exhaust sound attenuation on engines with cylinder deactivation
JP4130912B2 (en) * 2003-12-24 2008-08-13 三菱自動車工業株式会社 Exhaust pressure increasing device for an internal combustion engine
US20050155816A1 (en) * 2004-01-16 2005-07-21 Alcini William V. Dynamic exhaust system for advanced internal combustion engines
JP4362390B2 (en) * 2004-02-27 2009-11-11 川崎重工業株式会社 Of the motorcycle exhaust system
JP2005299457A (en) * 2004-04-09 2005-10-27 Isuzu Motors Ltd Engine exhaust gas throttle valve
US7509800B2 (en) * 2004-06-08 2009-03-31 Nissan Motor Co., Ltd. Exhaust system of multi-cylinder internal combustion engine
JP4502880B2 (en) * 2005-05-18 2010-07-14 本田技研工業株式会社 Exhaust gas flow rate control valve
DE102005041692A1 (en) * 2005-09-01 2007-03-15 J. Eberspächer GmbH & Co. KG Silencer for an exhaust system
US7575096B2 (en) 2005-09-21 2009-08-18 Emcon Technologies Llc Pressed assembly for passive valve installation
CN2881120Y (en) 2006-01-23 2007-03-21 李宗桦 Exhaust for vehicle exhaust pipe
US20080083218A1 (en) * 2006-10-06 2008-04-10 Arvin Technologies, Inc. Passive throttling valve outside of muffler
US7536990B2 (en) * 2006-11-21 2009-05-26 Emcon Technologies Llc Hybrid exhaust valve assembly
JP4767183B2 (en) * 2007-01-15 2011-09-07 川崎重工業株式会社 Engine exhaust devices
US7775322B2 (en) * 2007-03-16 2010-08-17 Tenneco Automotive Operating Company Inc. Snap-action valve for exhaust system
US7434570B2 (en) * 2007-03-16 2008-10-14 Tenneco Automotive Operating Company Inc. Snap-action valve for exhaust system
US8453672B2 (en) * 2007-03-29 2013-06-04 Emcon Technologies Llc Passive valve for attenuation of low frequency noise
US7712312B2 (en) * 2007-10-18 2010-05-11 Ford Global Technologies, Llc Pressure balanced swing valve for engine system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239091A (en) * 1977-09-16 1980-12-16 Negrao Paulo M Muffler
US5245140A (en) * 1992-04-20 1993-09-14 Wu Kan Chiao Muffler
US5655367A (en) * 1992-07-07 1997-08-12 Centre National De La Recherche Scientifique (Cnrs) Inlet or exhaust line for a reciprocating machine
US5801343A (en) * 1993-11-09 1998-09-01 Futaba Industrial Co., Ltd. Muffler for internal combustion engine
US5726397A (en) * 1994-10-19 1998-03-10 Honda Giken Kogyo Kabushiki Kaisha Vehicle exhaust device
US20020033302A1 (en) * 2000-09-11 2002-03-21 Calsonic Kansei Corporation & Nissan Motor Co., Ltd. Controllable muffler system for internal combustion engine
US6755279B2 (en) * 2000-09-11 2004-06-29 Calsonic Kansei Corporation Controllable muffler system for internal combustion engine
US6581721B2 (en) * 2000-09-20 2003-06-24 Calsonic Kansei Corporation Valve for a control muffler
US20020144860A1 (en) * 2000-10-17 2002-10-10 Bbnt Solutions Llc System and method for phased noise attenuation
US6467571B2 (en) * 2000-12-11 2002-10-22 Nakagawa Sangyo Co., Ltd. Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110005860A1 (en) * 2009-07-13 2011-01-13 Kwin Abram Exhaust component with reduced pack
US8857561B2 (en) 2010-12-01 2014-10-14 Faurecia Emissions Control Technologies Exhaust valve combined with active noise control system
US9540995B2 (en) 2012-03-06 2017-01-10 KATCON USA, Inc. Exhaust valve assembly
US9624837B2 (en) 2012-05-08 2017-04-18 Faurecia Emissions Control Technologies, Usa, Llc Adaptive valve spring retainer

Also Published As

Publication number Publication date Type
US20090126356A1 (en) 2009-05-21 application
CN101583784B (en) 2014-03-12 grant
US8955641B2 (en) 2015-02-17 grant
US20130213731A1 (en) 2013-08-22 application
US20090126358A1 (en) 2009-05-21 application
CN101583784A (en) 2009-11-18 application
US20090126357A1 (en) 2009-05-21 application
US20090126359A1 (en) 2009-05-21 application
US20090127023A1 (en) 2009-05-21 application
US7628250B2 (en) 2009-12-08 grant
US9121315B2 (en) 2015-09-01 grant

Similar Documents

Publication Publication Date Title
US3620330A (en) Muffler construction and method of selectively modifying its sound-attenuating characteristics
US3388769A (en) Dual inlet and outlet muffler
US5979598A (en) Intake silencer for motor vehicle
US5739483A (en) Automobile exhaust noise suppressor
US5831223A (en) Self-tuning exhaust muffler
US6644436B2 (en) Device for noise configuration in a motor vehicle
US4109753A (en) Muffler assembly
US5365025A (en) Low backpressure straight-through reactive and dissipative muffler
US5952625A (en) Multi-fold side branch muffler
US5971098A (en) Muffler for internal combustion engine
US5984045A (en) Engine exhaust noise suppressor
US3948349A (en) Wave interference silencer
US4361206A (en) Exhaust muffler including venturi tube
US5773770A (en) Cross flow path exhaust muffler
US3752260A (en) Air rush silencer
US6732509B2 (en) Engine acoustical system
US3259206A (en) Exhaust pipe silencer with side branch chambers and baffled elbow sections
US7451854B2 (en) Exhaust flow rate control valve
US4192403A (en) Muffler for internal combustion engines
US5493080A (en) External arrangement for damping sounds in a pipe system
US6595319B1 (en) Muffler
US3500954A (en) Exhaust silencing system
US20080223025A1 (en) Snap-action valve for exhaust system
US5655367A (en) Inlet or exhaust line for a reciprocating machine
US2520756A (en) Exhaust silencer for internalcombustion engines

Legal Events

Date Code Title Description
AS Assignment

Owner name: EMCON TECHNOLOGIES LLC, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ABRAM, KWIN;ARBUCKLE, IVAN;ISKENDEROVA, KAMILLA;AND OTHERS;REEL/FRAME:020287/0001;SIGNING DATES FROM 20071217 TO 20071220