Hybrid valve for attenuation of low frequency noise
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-015/03
F01N-001/08
F01N-001/16
F02D-009/04
F02D-009/10
F01N-013/08
출원번호
US-0664467
(2012-10-31)
등록번호
US-9376947
(2016-06-28)
발명자
/ 주소
Abram, Kwin
Callahan, Joseph
Willats, Robin
출원인 / 주소
Faurecia Emissions Control Technologies USA, LLC
대리인 / 주소
Carlson, Gaskey & Olds, PC
인용정보
피인용 횟수 :
2인용 특허 :
25
초록▼
A hybrid valve assembly for an exhaust system includes an exhaust tube having a bore defining an exhaust flow path. A vane is mounted within the bore and is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. A valve actuator has an
A hybrid valve assembly for an exhaust system includes an exhaust tube having a bore defining an exhaust flow path. A vane is mounted within the bore and is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. A valve actuator has an ON position where movement of the vane is actively controlled by the valve actuator and an OFF position where movement of the vane is passively controlled by exhaust gas flow.
대표청구항▼
1. A valve assembly for an exhaust system comprising: an exhaust tube having a bore defining an exhaust flow path, said exhaust tube having one end to be connected to a first exhaust component and a second end to be connected to a second exhaust component;a vane mounted within said bore and being mo
1. A valve assembly for an exhaust system comprising: an exhaust tube having a bore defining an exhaust flow path, said exhaust tube having one end to be connected to a first exhaust component and a second end to be connected to a second exhaust component;a vane mounted within said bore and being moveable between an open position and a closed position;a resilient member that biases said vane toward said closed position; anda valve actuator having an ON position where movement of said vane is actively controlled by said valve actuator as said vane moves between a fully open position and a fully closed position and an OFF position where movement of said vane is passively controlled by exhaust gas flow as said vane moves between the fully open position and the fully closed position, and wherein the fully open position defines a maximum open area of the exhaust flow path and the fully closed position defines a minimum open area of exhaust flow path. 2. The valve assembly according to claim 1 wherein said vane provides 80% to 97% coverage of said exhaust flow path when in said fully closed position. 3. The valve assembly according to claim 1 wherein, when said valve actuator is in said ON position, said vane is coupled to said valve actuator such that movement of said valve actuator causes said vane to move from the closed position to the open position, and wherein, when said valve actuator is in said OFF position said vane is uncoupled from said valve actuator such that said vane is solely movable from said closed position toward said open position in response to exhaust gas pressure being greater than a biasing force of said resilient member. 4. The valve assembly according to claim 1 wherein said exhaust tube forms a sole exhaust path extending between the first and the second exhaust components, and wherein said vane comprises the only valve assembly positioned between the first and the second exhaust components. 5. The valve assembly according to claim 1 wherein at least one of the first and second exhaust components comprises a muffler. 6. The valve assembly according to claim 5 wherein the other of the first and second exhaust components comprises one of a tailpipe and another muffler. 7. The valve assembly according to claim 1 wherein the valve actuator includes an extendible member that extends in an axial direction that is transverse to an axis of rotation defined by a shaft that supports said vane, and including a rigid arm that extends outwardly from the extendible member and a radially extending tab fixed for rotation with the shaft, and wherein said arm abuts against said radially extending tab to cause said vane to move from the closed position toward the open position when in the ON position. 8. The valve assembly according to claim 7 wherein said actuator comprises a linear actuator having an extendible member that moves along a linear path, and wherein said arm is fixed for movement with said extendible member. 9. The valve assembly according to claim 1, wherein said exhaust flow path has a cross-sectional area, and wherein said vane provides 80% to 97% coverage of said cross-sectional area when in said closed position. 10. The valve assembly according to claim 1 wherein the vane pivots about an axis of rotation, and wherein the valve actuator comprises a housing, an extendible member moveable relative to the housing, and a rigid arm extending transversely to the extendible member, and wherein the rigid arm extends in a direction that is generally parallel to the axis of rotation. 11. A valve assembly for an exhaust system comprising: an exhaust tube having a bore defining an exhaust flow path said exhaust tube having one end to be connected to a first exhaust component and a second end to be connected to a second exhaust component;a vane mounted within said bore and being moveable between an open position and a closed position;a resilient member that biases said vane toward said closed position;a shaft mounted to said vane, said shaft being pivotally supported by at least one bushing, and wherein said resilient member comprises a spring that is supported on said shaft; anda valve actuator having an ON position where movement of said vane is actively controlled by said valve actuator as said vane moves between a fully open position and a fully closed position and an OFF position where movement of said vane is passively controlled by exhaust gas flow as said vane moves between the fully open position and the fully closed position. 12. The valve assembly according to claim 11 including a spring retainer having a rotating portion fixed for rotation with said shaft, and wherein said valve actuator is configured to control movement of said vane by rotating said rotating portion when said valve actuator is in said ON position. 13. The valve assembly according to claim 12 wherein said spring retainer includes a radially extending tab and wherein said valve actuator includes an arm that abuts against said radially extending tab. 14. The valve assembly according to claim 13 wherein, when said valve actuator is in said OFF position, said arm comprises an abutment stop that defines the closed position, and wherein when said valve actuator is in said ON position, said arm abuts against and rotates said radially extending tab to move said vane toward said open position. 15. A valve assembly for an exhaust system comprising: an exhaust tube having a bore defining an exhaust flow path, said exhaust tube having one end to be connected to a first exhaust component and a second end to be connected to a second exhaust component;a vane mounted within said bore and being moveable between an open position and a closed position;a resilient member that biases said vane toward said closed position;a valve actuator having an ON position where movement of said vane is actively controlled by said valve actuator as said vane moves between a fully open position and a fully closed position and an OFF position where movement of said vane is passively controlled by exhaust gas flow as said vane moves between the fully open position and the fully closed position; andan input configured to be selectively actuated by a user to move said valve actuator between said ON and said OFF positions, and wherein selection between said ON and said OFF positions is based upon providing a desired valve characteristic. 16. The valve assembly according to claim 15 wherein said desired valve characteristic comprises a desired exhaust sound, and wherein when in said ON position said exhaust sound is louder than when in said OFF position. 17. The valve assembly according to claim 15 wherein said desired valve characteristic comprises a desired back pressure, and wherein when in said ON position said back pressure is lower than when in said OFF position. 18. A method of controlling a valve assembly comprising the steps of: providing an exhaust tube having a bore defining an exhaust flow path, a vane mounted within the bore and being moveable between an open position and a closed position, and a resilient member that biases the vane toward the closed position; andselectively moving a valve actuator between an ON position where movement of the vane is actively controlled by the valve actuator as the vane moves between a fully closed position and a fully open position and an OFF position where movement of the vane is passively controlled by exhaust gas flow as the vane moves between the fully open position and the fully closed position; andproviding an input configured to be selectively actuated by a user to move the valve actuator between the ON and OFF positions, and wherein selection between the ON and OFF positions is based upon providing a desired valve characteristics that includes at least one of a desired exhaust sound or a desired back pressure. 19. The method according to claim 18 wherein the exhaust flow path has a cross-sectional area, and including covering 80% to 97% coverage of the cross-sectional area with the vane when in the closed position. 20. The method according to claim 18 wherein selection between the ON and the OFF positions is based upon providing the desired exhaust sound, and including selecting the ON position to provide a louder exhaust sound than when in the OFF position. 21. The method according to claim 18 wherein selection between the ON and the OFF positions is based upon providing the desired back pressure, and including selecting the ON position to provide a lower back pressure than when in the OFF position. 22. The method according to claim 18 wherein the fully open position defines a maximum open area of exhaust flow path and the fully closed position defines a minimum open area of exhaust flow path, and wherein, when the valve actuator is in the ON position, including a step of coupling the vane to the valve actuator such that movement of the valve actuator causes the vane to move from the closed position to the open position, and wherein, when the valve actuator is in the OFF position, including a step of uncoupling the vane from the valve actuator such that the vane is solely movable from the closed position toward the open position in response to exhaust gas pressure being greater than a biasing force of the resilient member. 23. The method according to claim 18 wherein the valve actuator comprises a housing, an extendible member moveable relative to the housing, and a rigid arm extending transversely to the extendible member, and including the steps of pivoting the vane about an axis of rotation and extending the arm in a direction that is generally parallel to the axis of rotation. 24. A valve assembly for an exhaust system comprising: an exhaust tube having a bore defining an exhaust flow path, said exhaust tube having one end to be connected to a first exhaust component and a second end to be connected to a second exhaust component;a vane mounted within said bore and being moveable between a fully open position that defines a maximum open area of exhaust flow path and a fully closed position that defines a minimum open area of exhaust flow path;a resilient member that biases said vane toward said fully closed position;a valve actuator having a housing, and extendible member moveable relative to the housing, and a rigid arm extending transversely to the extendible member; andwherein the valve is configured to be operated in at least one of a passive control and an active control via the valve actuator as the vane moves between the fully open position and the fully closed position. 25. The valve assembly according to claim 24 wherein the valve is configured to be selectively operated in at least one of the passive control and the active control by controlling the valve actuator that has an ON position where said valve actuator is coupled to said vane and movement of said vane is only actively controlled by said valve actuator as said vane moves between the fully open position and the fully closed position, and an OFF position where said valve actuator is uncoupled from said vane and movement of said vane is only passively controlled by exhaust gas flow as said vane moves between the fully open position and the fully closed position. 26. The valve assembly according to claim 25 wherein, when said valve actuator is in said OFF position, said vane is solely movable from said closed position toward said open position in response to exhaust gas pressure being greater than a biasing force of said resilient member. 27. The valve assembly according to claim 25 wherein said exhaust tube defines a center axis extending in a direction with the exhaust flow path, and wherein said resilient member is configured to rotate said vane about an axis of rotation that is transverse to the center axis, and wherein said valve actuator comprises a linear actuator having an extendible member that is moveable along a linear path in a direction transverse to the axis of rotation. 28. The valve assembly according to claim 27 including a spring retainer having a rotating portion fixed for rotation with said vane, said rotating portion including a radially extending tab, and wherein said arm engages said tab. 29. The valve assembly according to claim 25 including an input configured to be selectively actuated by a user to move said valve actuator between said ON and said OFF positions, and wherein selection between said ON and said OFF positions is based upon providing a desired valve characteristic. 30. The valve assembly according to claim 24 wherein said vane provides 80% to 97% coverage of said exhaust flow path when in said fully closed position. 31. The valve assembly according to claim 24 wherein the vane pivots about an axis of rotation, and wherein the arm extends in a direction that is generally parallel to the axis of rotation. 32. The valve assembly according to claim 24 including a shaft that supports the vane for rotation about an axis, and wherein the axis is offset from a center of the vane. 33. A method of controlling a valve assembly comprising the steps of: providing an exhaust tube having a bore defining an exhaust flow path, a vane mounted within the bore and being moveable between an open position and a closed position, and a resilient member that biases the vane toward the closed position; andselectively moving a valve actuator between an ON position where movement of the vane is actively controlled by the valve actuator as the vane moves between a fully closed position and a fully open position and an OFF position where movement of the vane is passively controlled by exhaust gas flow as the vane moves between the fully open position and the fully closed position; andwherein the valve actuator comprises a housing, an extendible member moveable relative to the housing, and a rigid arm extending transversely to the extendible member, and including the steps of, when in the ON position, moving the extendible member in an axial direction and engaging the arm against a radially extending tab to cause the vane to move from the closed position toward the open position.
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이 특허에 인용된 특허 (25)
Schumacher,Herbert; Geis,Volker, Automotive exhaust silencer system with variable damping characteristics.
Cook John E. (Chatham CAX) Everingham Gary M. (Chatham MI CAX) Hazen David J. (Ann Arbor MI) Sweetnam Gordon W. (Milford MI) Gillier William C. (Chatham CAX), Internal combustion engine exhaust control valve.
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