EP1568862B1 - Vanne à clapet en forme de doigt - Google Patents

Vanne à clapet en forme de doigt Download PDF

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Publication number
EP1568862B1
EP1568862B1 EP05011547A EP05011547A EP1568862B1 EP 1568862 B1 EP1568862 B1 EP 1568862B1 EP 05011547 A EP05011547 A EP 05011547A EP 05011547 A EP05011547 A EP 05011547A EP 1568862 B1 EP1568862 B1 EP 1568862B1
Authority
EP
European Patent Office
Prior art keywords
valve
flapper
exhaust
exhaust system
flapper valve
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.)
Expired - Lifetime
Application number
EP05011547A
Other languages
German (de)
English (en)
Other versions
EP1568862A2 (fr
EP1568862A3 (fr
Inventor
Robert J. Sageman
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.)
Barnes Group Inc
Original Assignee
Barnes Group Inc
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
Priority claimed from US10/690,130 external-priority patent/US6899199B2/en
Application filed by Barnes Group Inc filed Critical Barnes Group Inc
Publication of EP1568862A2 publication Critical patent/EP1568862A2/fr
Publication of EP1568862A3 publication Critical patent/EP1568862A3/fr
Application granted granted Critical
Publication of EP1568862B1 publication Critical patent/EP1568862B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling

Definitions

  • the invention broadly relates to exhaust systems and mufflers, and more particularly relates to a flapper finger valve and a flapper finger valve assembly that will be used in an automotive exhaust system to define a flow path for exhaust gasses that are released under high pressure and high flow conditions.
  • mufflers are stamped from typically known steel, aluminum or the like and will use multiple internal baffles and tubes to silence the exhaust noise from the power train.
  • exhaust enters one end of a muffler and is moved through a series of baffles and tubes in the interior of the muffler, to an exhaust tube and then on to a tailpipe.
  • the design of the baffles, the number of baffles, the holes in the baffles, and any piping within the muffler all relate to the pressure and flow conditions through the muffler and exhaust system of the automotive vehicle.
  • the size of the prior art muffler and exhaust systems of automotive vehicles is rather large in order to accomplish the baffling and noise reduction required by the muffler systems.
  • the size of the exhaust systems require a lot of the packaging room available on the undercarriage of the chassis system of the automotive vehicles.
  • the tuning and control of other characteristics of the muffler also can increase the performance and other associated characteristics of the automotive vehicle depending on the design of the baffles and the amount of pressure allowed to be released and at what flow rate the pressure is released through the exhaust system. Therefore, the performance characteristics of the vehicle that are effected by the release of pressure through the exhaust system in many prior art vehicles is fixed once the exhaust system is installed. Hence, the size of the muffler had to be large to correctly tune and dampen noise as required by the exhaust muffler system.
  • US 3,006,160 discloses a refrigerating apparatus having a refrigerant compressor including a valve assembly comprising a tube with a plurality of orifices and C-shaped valves arranged on the outside of the tube to cover the orifices.
  • the present invention provides a flapper valve for controlling axial leakage through openings in an exhaust system tube, said flapper valve comprising a generally C-shaped strip of spring material having a top portion, a first end and a second end and comprising a bend adjacent each end, each bend having a predetermined angle for covering an orifice in the exhaust system, characterised in that said strip further comprises a bridge at a predetermined position between said top portion and one of said ends, said bridge reducing the width of the flapper finger valve, said reduction in width being based on pressure, flow and response time requirements of the exhaust system.
  • the present invention also provides a flapper valve for controlling axial leakage through openings in an exhaust system tube, said flapper valve comprising a generally C-shaped strip of spring material having a top portion, a first end and a second end and comprising a bend adjacent each end, each bend having a predetermined angle for covering an orifice in the exhaust system, characterised in that, between said top portion and each of said ends, there is provided a predefined orifice of a predetermined size located at a predetermined location, said predefined orifice size and location being based on pressure, flow and response time requirements of the exhaust system.
  • An advantage of the above aspect of the present invention is the tuneability and variability of the exhaust system by changing design requirements of the flapper finger valves.
  • said C-shaped strip comprises an orifice extending through a surface of said top portion allowing connection of said flapper valve to an exhaust tube, and allowing connection of a retainer to said flapper valve for controlling the maximum amount of radial travel of said first and second ends of said flapper valve.
  • the valve further comprises a C-shaped retainer connected to said top portion of said strip, said retainer having a center and two ends, with a predetermined bend on both of said retainer ends to limit the amount of radial movement of said first and second ends of said flapper valve.
  • Figs. 1 through 14 show the flapper finger valve assembly 10 according to the present invention.
  • the flapper finger valve assembly 10 will be for use on a muffler or exhaust system component 38 and/or as a stand alone unit that will allow for the propagation of the exhaust gasses through a predetermined path for release under high pressure and high flow conditions.
  • the use of the flapper finger valve assembly 10 will allow for a reduction in the packaging size of the muffler 38 thus increasing available space on the undercarriage of the chassis of an automotive vehicle. Furthermore the reduction in size will also reduce the weight and manufacturing costs of the muffler or exhaust system 38.
  • the flapper finger valve assembly 10 will be available in a variety of configurations and will also allow for a variable control or fine tuning of the exhaust system and power train of the vehicle.
  • Fig. 1 shows the exhaust pressure flapper finger valve or relief valve 12 according to the present invention.
  • the flapper finger valve 12 has an overall C-shape.
  • the valve 12 has an orifice 14 through a surface thereof at or near a top point thereof.
  • Fig. 1 shows the valve in a closed position 16 and in an open position 18.
  • the flapper finger valve 12 will be made of a steel material that will have a predetermined spring coefficient. It should be noted that any other type of metal, ceramic, plastic, composite or any other type of material may be used for the flapper finger valve 12. As shown in Fig.
  • the flapper finger valve 12 also includes, on both ends thereof, a predetermined bend 20 at a predetermined angle which will be used to cover and seal a predetermined orifice 22 in the exhaust system.
  • the flapper finger valve 12 is designed such that it controls the release of the exhaust pressure and flow of the exhaust in a predetermined manner.
  • the steel will have a predetermined spring coefficient that in one embodiment will be in the closed position in its equilibrium position. Then when a predetermined pressure from the exhaust is placed upon an inner surface of the flapper finger valve 12, the flapper finger valve 12 will be urged in an outer direction thus increasing the size of the C and bending the finger valve 12 outward in a radial direction.
  • the flapper finger valve 12 must have the proper spring characteristics and the ability to open and close at various pressures and within predetermined time constraints. It should further be noted that the profile or predetermined bend 20 in each of the flapper finger valves 12 may vary depending on the relief orifices 22 in the exhaust tube 24. It should further be noted that the finger valve has a predetermined thickness which will also affect the characteristics of the exhaust system. The thickness of the material will be matched to the pressure and noise reduction requirements of the exhaust system. The thicker the material the more pressure and the greater flow needed to open the valve 12. Therefore, the thinner the material the quicker the valve 12 will open, thus releasing exhaust pressure through the muffler system.
  • the flapper finger valve 12 can be placed on the outer circumference of an exhaust tube 24 or on an inner circumference of an exhaust tube 24 depending on the design requirements and flow direction needed for the exhaust. Furthermore, a bridge 26, as shown in Fig. 1, will reduce the width of the flapper finger valve 12 at predetermined positions based on the pressure and flow requirements needed along with the response time in the exhaust system. Therefore, all of the variables discussed above can be changed on the flapper finger valve 12 to fine tune and/or configure the exhaust system to predetermined specifications.
  • Fig. 2 shows the exhaust pressure relief valve backer or retainer 28 for use in the present invention.
  • the retainer 28 generally has a rectangular shape if viewed flat. However, in its operational mode the retainer 28 generally has a C-shape.
  • the retainer 28 will control the maximum amount of radial travel for the flapper finger valve 12. Therefore, the effective radius of the retainer 28 is a predetermined length that will allow the flapper finger valve 12 to open to a predetermined position or close to a predetermined position depending on the operating requirements of the exhaust system.
  • the retainer 28 is made of a steel material but that it should be noted that any other metal material, plastic, ceramic, composite or any other known material capable of withstanding the pressure and heat of an automotive exhaust system may be used.
  • the exhaust pressure relief valve backer 28 also includes an orifice 30 at a top portion through a surface thereof. This orifice 30 will mate and align with the orifice 14 located on the flapper finger valve 12 and will allow for connection of the retainer 28 and flapper finger valve 12 to an exhaust tube 24.
  • the retainer 28 will be placed and arranged such that an outer surface of the flapper finger valve 12 engages with an inner surface of the retainer 28.
  • the retainer 28 has a fixed radius and does not have the spring coefficient shown in the flapper finger valve 12 and therefore is designed to set an upper limit on the amount of radial movement for the flapper finger valve 12.
  • the exhaust pressure relief valve backer 28 also may include a predetermined bend 32 on both ends thereof. This bend will match with any bend found in the flapper finger valve 12.
  • Figs. 5 and 6 show an exhaust pressure tube 24 for use with the flapper finger valve 12 and retainer 28 as discussed above.
  • the exhaust pressure tube 24 will restrict the exhaust flow volume to a predetermined amount to produce the control and fine tuning of the exhaust system for the application required.
  • the exhaust tube 24 generally has a tubular cross section and includes a plurality of orifices.
  • a mounting orifice 34 through one surface thereof will mate with the orifices 14, 30 on the flapper finger valve 12 and retainer 28 to allow for connection of the flapper finger valve 12 and retainer 28 to the exhaust tube 24.
  • a first and second relief orifice 22 are located equal distance from each other through the surface of the exhaust tube 24 opposite from the mounting orifice 34.
  • the size of the relief orifices 22 will determine the amount of flow through the exhaust pressure tube 24 and flapper finger valve 12. It should be noted that in one embodiment the exhaust pressure tube 24 is made of a steel material but that any other known metal, plastic, ceramic, composite or other material capable of withstanding the pressure and heat may also be used for the exhaust pressure tube 24.
  • the exhaust pressure tube 24 will be designed to mate with and align with any known tube within an exhaust system/muffler 38.
  • the relief orifices 22 generally are circular but any other shape may be used depending on the requirements and noise reduction capabilities of any other design.
  • the size of the relief orifices 22 also will be tuned to the specific pressure requirements and flow variations of the flapper finger valve assembly 10. This will allow for multiple pressure and flow control variables depending on the size and/or shape of the flow relief orifices 22.
  • Figs. 3, 4 and 6 show the flapper finger valve assembly 10 completely assembled.
  • the exhaust tube 24 is placed within a muffler system 38 or in an tube within an exhaust system at predetermined intervals or at predetermined areas therein.
  • a flapper finger valve 12 is placed directly in contact with the exhaust tube 24 on an outside surface of the exhaust tube 24 and then an inside surface of the retainer 28 is placed in direct contact with an outer surface of the flapper finger valve 12.
  • the orifices 14, 30 on the flapper finger valve 12 and retainer 28 are aligned with the mounting orifice 34 on the exhaust tube 24 and any known fastener or connection method 36 is used to connect the three components to one another, such as but not limited to screws, rivets, inserts, welding or any other mechanical or chemical bonding means.
  • the flapper finger valve 12 At an equilibrium position the flapper finger valve 12 will engage the entire outer circumference of the exhaust tube 24 and cover the relief orifices 22. During operation once the exhaust pressure increases and the flow increases the valve 12 will open in a radial direction, away from the outer surface of the exhaust tube 24 and allow for flow of the exhaust through the relief orifices 22 and on through the muffler or the exhaust system 38.
  • the flapper finger valve assembly 10 can be placed in parallel or series as shown in Figs. 4 and 6 or placed anywhere within the exhaust system to achieve the desired tuning and control characteristics of the exhaust system. Therefore, it can be placed in a tube at the beginning of the muffler 38, at the end of the muffler 38 or in a separate independent unit separate from the muffler. The amount of noise reduction and tuning characteristics will depend on the design requirements of the vehicle.
  • a flapper finger valve assembly 10 that is electronically controlled that will allow the user of the motor vehicle to dial in a specific tuning for the exhaust system.
  • This assembly could use electric solenoids or the like to control how far the finger valves 12 open and which finger valves 12 will even be capable of opening.
  • a plurality of different size and tuned valves 12 may be placed in the same muffler with only specific valves 12 becoming operational at predetermined times depending on the characteristics selected by the motor vehicle operator.
  • pneumatic, electro-mechanical, hydraulic or pure mechanical systems are contemplated to control the flapper finger valve assembly 10 in any known contemplated exhaust systems for a vehicle.
  • FIG 15 shows an alternate embodiment for an exhaust pressure flapper finger valve or relief valve 120 according to the present invention.
  • the flapper finger valve 120 has an overall C-shape.
  • the valve 120 has a connecting orifice 140 through a surface thereof at or near a top thereof.
  • the flapper finger valve 120 will be made of a steel material that will have a predetermined spring coefficient. It should be noted that any other type of metal, ceramic, plastic, composite, fabric, or any other type of material may be used for the flapper finger valve 120.
  • the flapper finger valve 120 also includes a plurality of predefined orifices 127 arranged around the connecting orifice 140.
  • the orifices 127 may either be a circular orifice or any other shaped orifice depending on the environment and design requirements of the flapper finger valve 120.
  • the diameter of the orifices 127 are arranged and placed at predetermined positions based on the pressure and flow requirements needed along with the response time in the exhaust system.
  • the large diameter orifices 127 will require less pressure from the exhaust system to open the flapper valve 120 to its open position while smaller diameter orifices 127 will require greater pressure to open the flapper valve 120, thus allowing for release of the exhaust pressure through the muffler system. Therefore, the orifices 127 work in the same manner as the bridges as shown in Figure 1. Therefore, all of the variables discussed including the shape, size and location of the orifices 127 can be changed on the flapper finger valve 120 to fine tune and/or configure the exhaust system to predetermined specifications.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Lift Valve (AREA)

Claims (4)

  1. Soupape à languette (12) pour commander une fuite axiale par des ouvertures (22) pratiquées dans un tube de système d'échappement, ladite soupape à languette (12) comprenant une bande de matériau formant ressort globalement en forme de C ayant une partie supérieure, une première extrémité et une deuxième extrémité et comprenant une courbure (20) au voisinage de chaque extrémité, chaque courbure (20) ayant un angle prédéterminé pour couvrir un orifice (22) prévu dans le système d'échappement, caractérisée en ce que ladite bande comprend en outre un pont (26) en une position prédéterminée entre ladite partie supérieure et l'une desdites extrémités, ledit pont (26) réduisant la largeur de la soupape à languette, ladite réduction de largeur étant basée sur des spécifications de pression, de débit et de temps de réponse du système d'échappement.
  2. Soupape à languette (120) pour commander une fuite axiale par des ouvertures (22) pratiquées dans un tube de système d'échappement, ladite soupape à languette (12) comprenant une bande de matériau formant ressort globalement en forme de C ayant une partie supérieure, une première extrémité et une deuxième extrémité et comprenant une courbure (20) au voisinage de chaque extrémité, chaque courbure (20) ayant un angle prédéterminé pour couvrir un orifice (22) prévu dans le système d'échappement, caractérisée en ce que, entre ladite partie supérieure et chacune desdites extrémités, il est prévu un orifice prédéfini (127) de dimension prédéterminée et situé en un endroit prédéterminé, la taille et l'emplacement dudit orifice prédéfini étant basés sur des spécifications de pression, de débit et de temps de réponse du système d'échappement.
  3. Soupape à languette selon la revendication 1 ou 2, dans laquelle ladite bande en forme de C comprend un orifice (14) qui traverse une surface de ladite partie supérieure, permettant l'assemblage de ladite soupape à languette (12) sur un tube d'échappement, et permettant l'assemblage d'un élément de retenue (28) sur ladite soupape à languette (12) pour régler le débattement radial maximal desdites première et deuxième extrémités de ladite soupape à languette (12).
  4. Soupape à languette selon la revendication 1 ou 2, comprenant en outre un élément de retenue en forme de C (28) assemblé à ladite partie supérieure de ladite bande, ledit élément de retenue (28) ayant un centre et deux extrémités, et une courbure prédéterminée sur ces deux extrémités afin de limiter le déplacement radial desdites première et deuxième extrémités de ladite soupape à languette (12).
EP05011547A 2002-10-24 2003-10-23 Vanne à clapet en forme de doigt Expired - Lifetime EP1568862B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US690130 1996-07-31
US42082502P 2002-10-24 2002-10-24
US420825P 2002-10-24
US10/690,130 US6899199B2 (en) 2002-10-24 2003-10-21 Flapper finger valve assembly
EP20030256721 EP1413717B1 (fr) 2002-10-24 2003-10-23 Vanne à clapet en forme de doigt

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP20030256721 Division EP1413717B1 (fr) 2002-10-24 2003-10-23 Vanne à clapet en forme de doigt

Publications (3)

Publication Number Publication Date
EP1568862A2 EP1568862A2 (fr) 2005-08-31
EP1568862A3 EP1568862A3 (fr) 2005-09-07
EP1568862B1 true EP1568862B1 (fr) 2006-10-04

Family

ID=34753361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05011547A Expired - Lifetime EP1568862B1 (fr) 2002-10-24 2003-10-23 Vanne à clapet en forme de doigt

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EP (1) EP1568862B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3006160A (en) * 1959-11-09 1961-10-31 Gen Motors Corp Refrigerating apparatus
US4042062A (en) * 1976-03-01 1977-08-16 Chicago Pneumatic Tool Company Air pulse noise damper for a pneumatic tool
JPS60162007A (ja) * 1984-02-01 1985-08-23 Suzuki Motor Co Ltd ２サイクルエンジン用マフラ
JP3050530B2 (ja) * 1997-02-14 2000-06-12 フタバ産業株式会社 マフラ構造
JP3705969B2 (ja) * 1999-10-21 2005-10-12 本田技研工業株式会社 消音器用バルブ装置

Also Published As

Publication number Publication date
EP1568862A2 (fr) 2005-08-31
EP1568862A3 (fr) 2005-09-07

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