WO2002014721A1 - Rotatable airflow control mechanism and method of manufacturing - Google Patents
Rotatable airflow control mechanism and method of manufacturing Download PDFInfo
- Publication number
- WO2002014721A1 WO2002014721A1 PCT/US2001/025611 US0125611W WO0214721A1 WO 2002014721 A1 WO2002014721 A1 WO 2002014721A1 US 0125611 W US0125611 W US 0125611W WO 0214721 A1 WO0214721 A1 WO 0214721A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow restrictor
- throttle
- throttle plate
- control mechanism
- airflow
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/101—Special flap shapes, ribs, bores or the like
- F02D9/1015—Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/107—Manufacturing or mounting details
Definitions
- the present invention generally relates to throttle valves to control fluid flow and, more specifically, throttle valves with a flow restrictor that restricts fluid flow at low throttle plate angles.
- Throttle valves are typically used with internal combustion engines to control the airflow into the engine, which helps control the speed and power of the engine. Throttle valves typically include a throttle plate that mates with and rotates within a throttle bore. During the initial rotation of the throttle plate from a closed position, the throttle plate can quickly distance itself from the throttle bore and dramatically increase airflow through the throttle valve, which may cause a sudden surge of the vehicle especially in a vehicle with a large engine.
- FIGURES 1 is an end view of the throttle valve of the first preferred embodiment of the invention
- FIGURE 2 is a cross-sectional view of the throttle valve of FIGURE 1 ;
- FIGURES 3A-3C are partial cross-sectional views, similar to FIGURE
- FIGURE 4 is a cross-sectional view of the throttle valve of the second preferred embodiment.
- the throttle valve 10 of the first preferred embodiment of the invention includes a throttle body 12 defining a throttle bore 14 (shown in FIGURE 2) and a rotatable control airflow control mechanism further including a throttle plate 18 and a flow restrictor 24.
- the throttle plate 18 is mounted to a throttle shaft 20 which transverses the throttle bore 14 and permits the throttle plate 18 to rotate generally about an axis of the throttle shaft 20.
- the throttle valve 10 of the first preferred embodiment of the invention which controls the flow of a fluid between two components, has been specifically designed for use with an internal combustion engine of an automobile between an air intake and an engine intake manifold.
- the flow restrictor 24 of the first preferred embodiment functions to reduce the airflow to the engine intake manifold (and hence to reduce the output of the engine) during the initial rotation of the throttle plate 18 from a closed position. This reduction of airflow allows a smoother transition from a stopped condition to a moving condition of the vehicle and, consequently, increases customer satisfaction of the vehicle.
- the throttle valve 10, of course, may be used in other suitable environments to control a fluid flow.
- the throttle plate 18 of the first preferred embodiment of the invention is sized such that its diameter is substantially equal to the diameter of the throttle plate 18.
- the positional relationship between the throttle plate 18 and the throttle bore 14 must be relatively exact such that the throttle plate 18 may control airflow through the throttle bore 14 without sticking to or leakage near the throttle bore 14.
- the throttle plate 18 is formed by conventional methods, such as turning or blanking, but other suitable methods may be used.
- the throttle plate 18 is formed from a material with a relatively high melting temperature, such as metal.
- the throttle plate 18 is preferably attached to the throttle shaft 20 with a threaded fastener 22 (shown in FIGURE 1), but may be attached to the throttle shaft 20 with any suitable method or device.
- the throttle shaft 20 is preferably mounted to the throttle body by passing through a hole (not shown) formed within the throttle body 12 and is further preferably connected to an actuation means to control the rotation (and thus opening and closing) of the throttle plate 18 relative to the throttle bore 14.
- the throttle plate 18 has at least one leading side 30 and at least one trailing side 32. The leading sides 30 and trailing sides 32 are classified by the rotating direction of the throttle plate 18. Therefore, a leading side 30 of an opening throttle plate 18 is also a trailing side 32 of a closing throttle plate.
- the flow restrictor 24 of the first preferred embodiment is fastened to the throttle plate 18 to reduce airflow through the throttle valve 10.
- the flow restrictor 24 is preferably formed from a material with a melting point substantially lower than the material of the throttle plate 18.
- the flow restrictor 24 is formed from a non-metal material, such as plastic.
- the flow restrictor 24 is preferably generally wedge shaped, but any design that reduces the airflow through the throttle valve 10 is acceptable.
- the flow restrictor 24 preferably includes a raised ridge 26 disposed about the circumference of the flow restrictor 24.
- the raised ridge 26 preferably provides structural support to the flow restrictor 24 and reduces the airflow through the throttle valve 10.
- the raised ridge is preferably integrally formed from the same material as the flow restrictor 24, but may alternatively be formed from any other suitable material and separately attached.
- the flow restrictor 24 preferably also includes a raised rib 28 disposed on the flow restrictor 24.
- the raised rib 28 preferably provides structural support to the flow restrictor 24 and is preferably integrally formed from the same material as the flow restrictor 24, but may alternatively be formed from any other suitable material and separately attached.
- the flow restrictor 24 preferably also includes at least one protrusion
- the protrusion 34 disposed on and extending outwardly from the flow restrictor 24.
- the protrusion 34 functions to limit contact between the throttle shaft 20 and the flow restrictor 24.
- the throttle plate 18 and the flow restrictor 24 are preferably fastened.
- the throttle plate 18 and flow restrictor 24 are then preferably positioned relative to the throttle shaft 20 such that the throttle plate 18 and the throttle shaft 20 may be fastened by the threaded fastener 22.
- the protrusion 34 preferably limits the contact between the throttle shaft 20 and the flow restrictor 24 and assists in the positioning of the throttle plate 18 to the throttle shaft 20.
- the protrusion 34 is preferably integrally formed from the same material as the flow restrictor 24, but may alternatively be formed from any other suitable material and separately attached.
- the flow restrictor 24 is preferably fastened to the throttle plate 18 without changing the physical structure of the throttle plate 24.
- suitable fastening procedures include over-molding.
- the step of forming the flow restrictor 24 and the step of fastening the flow restrictor 24 to the throttle plate 18 are accomplished substantially simultaneously.
- Other suitable fastening procedures that do not change the dimensions, strength, or other physical properties of the throttle plate 24 may be used.
- the flow restrictor 24 is preferably adapted to reduce airflow through the throttle valve 10 at generally low throttle plate angles.
- the throttle plate angle is measured by the angle between a line perpendicular to the centerline 16 of the throttle body 12 and a line parallel to the throttle plate 18.
- the throttle plate 18 forms a substantially air-tight seal with the throttle bore 14. Since the airflow through the throttle bore 14 is substantially zero, the flow restrictor 24, which is disposed on at least one trailing side 32 of the throttle plate 18, does not function.
- FIGURE 4 which is otherwise identical to the first preferred embodiment of the invention, preferably includes a second flow restrictor 24' disposed on the throttle plate 18.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Lift Valve (AREA)
Abstract
A throttle valve for an induction system comprising adapted to control airflow including a throttle body defining a throttle bore, a throttle shaft traversing the throttle bore, a throttle plate located within the throttle bore fastened to the throttle shaft and adapted to rotate about an axis, and a non-metal portion flow restrictor. The flow restrictor is adapted to reduce off-idle airflow through the throttle valve.
Description
ROTATABLE AIRFLOW CONTROL MECHANISM AND METHOD OF MANUFACTURING
TECHNICAL FIELD OF THE INVENTION [0001] The present invention generally relates to throttle valves to control fluid flow and, more specifically, throttle valves with a flow restrictor that restricts fluid flow at low throttle plate angles.
BACKGROUND OF THE INVENTION [0002] Throttle valves are typically used with internal combustion engines to control the airflow into the engine, which helps control the speed and power of the engine. Throttle valves typically include a throttle plate that mates with and rotates within a throttle bore. During the initial rotation of the throttle plate from a closed position, the throttle plate can quickly distance itself from the throttle bore and dramatically increase airflow through the throttle valve, which may cause a sudden surge of the vehicle especially in a vehicle with a large engine.
[0003] In some situations, such as a luxury vehicle, this sudden surge is less- than-desirable. To reduce this sudden surge, some automotive manufacturers have included a flow restrictor, which functions to reduce airflow (and hence the sudden surge of the vehicle) during the initial rotation of the throttle plate. The flow restrictors have previously been formed from a metallic material and have been riveted to the throttle plates.
BRIEF DESCRIPTION OF THE DRAWINGS [0004] FIGURES 1 is an end view of the throttle valve of the first preferred embodiment of the invention;
[0005] FIGURE 2 is a cross-sectional view of the throttle valve of FIGURE 1 ;
[0006] FIGURES 3A-3C are partial cross-sectional views, similar to FIGURE
2, shown with different throttle plate angles; and
[0007] FIGURE 4 is a cross-sectional view of the throttle valve of the second preferred embodiment.
DETAILED DESCRIPTION OF THE INVENTION [0008] The following description of the two preferred embodiments of the invention is not intended to limit the scope of the invention to the two preferred embodiments, but rather to enable any person skilled in the art of throttle valves to make and use the invention.
[0009] As shown in FIGURES 1 and 2, the throttle valve 10 of the first preferred embodiment of the invention includes a throttle body 12 defining a throttle bore 14 (shown in FIGURE 2) and a rotatable control airflow control mechanism further including a throttle plate 18 and a flow restrictor 24. Preferably, the throttle plate 18 is mounted to a throttle shaft 20 which transverses the throttle bore 14 and permits the throttle plate 18 to rotate generally about an axis of the throttle shaft 20.
[0010] The throttle valve 10 of the first preferred embodiment of the invention, which controls the flow of a fluid between two components, has been specifically designed for use with an internal combustion engine of an automobile between an air intake and an engine intake manifold. In this environment, the flow restrictor 24 of the first preferred embodiment functions to reduce the airflow to the engine intake manifold (and hence to reduce the output of the engine) during the initial rotation of the throttle plate 18 from a closed position. This reduction of airflow allows a smoother transition from a stopped condition to a moving condition of the vehicle
and, consequently, increases customer satisfaction of the vehicle. The throttle valve 10, of course, may be used in other suitable environments to control a fluid flow. [0011] The throttle plate 18 of the first preferred embodiment of the invention is sized such that its diameter is substantially equal to the diameter of the throttle plate 18. The positional relationship between the throttle plate 18 and the throttle bore 14 must be relatively exact such that the throttle plate 18 may control airflow through the throttle bore 14 without sticking to or leakage near the throttle bore 14. In the preferred embodiment, the throttle plate 18 is formed by conventional methods, such as turning or blanking, but other suitable methods may be used. Preferably, the throttle plate 18 is formed from a material with a relatively high melting temperature, such as metal.
[0012] The throttle plate 18 is preferably attached to the throttle shaft 20 with a threaded fastener 22 (shown in FIGURE 1), but may be attached to the throttle shaft 20 with any suitable method or device. The throttle shaft 20 is preferably mounted to the throttle body by passing through a hole (not shown) formed within the throttle body 12 and is further preferably connected to an actuation means to control the rotation (and thus opening and closing) of the throttle plate 18 relative to the throttle bore 14. The throttle plate 18 has at least one leading side 30 and at least one trailing side 32. The leading sides 30 and trailing sides 32 are classified by the rotating direction of the throttle plate 18. Therefore, a leading side 30 of an opening throttle plate 18 is also a trailing side 32 of a closing throttle plate. [0013] The flow restrictor 24 of the first preferred embodiment is fastened to the throttle plate 18 to reduce airflow through the throttle valve 10. The flow restrictor 24 is preferably formed from a material with a melting point substantially lower than
the material of the throttle plate 18. In the preferred embodiment, the flow restrictor 24 is formed from a non-metal material, such as plastic. The flow restrictor 24 is preferably generally wedge shaped, but any design that reduces the airflow through the throttle valve 10 is acceptable.
[0014] The flow restrictor 24 preferably includes a raised ridge 26 disposed about the circumference of the flow restrictor 24. The raised ridge 26 preferably provides structural support to the flow restrictor 24 and reduces the airflow through the throttle valve 10. The raised ridge is preferably integrally formed from the same material as the flow restrictor 24, but may alternatively be formed from any other suitable material and separately attached. The flow restrictor 24 preferably also includes a raised rib 28 disposed on the flow restrictor 24. The raised rib 28 preferably provides structural support to the flow restrictor 24 and is preferably integrally formed from the same material as the flow restrictor 24, but may alternatively be formed from any other suitable material and separately attached. [0015] The flow restrictor 24 preferably also includes at least one protrusion
34 disposed on and extending outwardly from the flow restrictor 24. The protrusion 34 functions to limit contact between the throttle shaft 20 and the flow restrictor 24. During assembly of the throttle valve 10, the throttle plate 18 and the flow restrictor 24 are preferably fastened. The throttle plate 18 and flow restrictor 24 are then preferably positioned relative to the throttle shaft 20 such that the throttle plate 18 and the throttle shaft 20 may be fastened by the threaded fastener 22. During the positioning of the throttle plate 18, the protrusion 34 preferably limits the contact between the throttle shaft 20 and the flow restrictor 24 and assists in the positioning of the throttle plate 18 to the throttle shaft 20. The protrusion 34 is preferably
integrally formed from the same material as the flow restrictor 24, but may alternatively be formed from any other suitable material and separately attached. [0016] The flow restrictor 24 is preferably fastened to the throttle plate 18 without changing the physical structure of the throttle plate 24. Such suitable fastening procedures include over-molding. When using the over-molding process, the step of forming the flow restrictor 24 and the step of fastening the flow restrictor 24 to the throttle plate 18 are accomplished substantially simultaneously. Other suitable fastening procedures that do not change the dimensions, strength, or other physical properties of the throttle plate 24 may be used.
[0017] The flow restrictor 24 is preferably adapted to reduce airflow through the throttle valve 10 at generally low throttle plate angles. As shown in FIGURES 3A- 3C, the throttle plate angle is measured by the angle between a line perpendicular to the centerline 16 of the throttle body 12 and a line parallel to the throttle plate 18. In the closed position with a throttle plate angle of approximately 0°, as shown in FIGURE 3A, the throttle plate 18 forms a substantially air-tight seal with the throttle bore 14. Since the airflow through the throttle bore 14 is substantially zero, the flow restrictor 24, which is disposed on at least one trailing side 32 of the throttle plate 18, does not function. With a throttle plate angle α and β greater than 0°, as shown in FIGURES 3B and 3C, the throttle plate 18 distances itself from the throttle bore 14. During these positions, however, the distance between the flow restrictor 24 and the throttle bore 14 is still relatively small. In this manner, the flow restrictor 24 reduces airflow through the throttle valve 10 at relatively small angles, such as α and β. In the preferred embodiment, the flow restrictor 24 effectively reduces airflow through the throttle valve 10 at angles up to 30°.
[0018] The second preferred embodiment of the invention, as shown in
FIGURE 4, which is otherwise identical to the first preferred embodiment of the invention, preferably includes a second flow restrictor 24' disposed on the throttle plate 18.
[0019] As any person skilled in the art of throttle valves will recognize from the previous detailed description and from the figures and claims, modifications and changes can be made to the preferred embodiments of the invention without departing from the scope of this invention defined in the following claims.
Claims
1. A throttle valve adapted to control airflow comprising: a throttle body defining a throttle bore; a throttle shaft traversing said throttle bore; a throttle plate located within said throttle bore, fastened to said throttle shaft, and adapted to rotate about an axis, wherein said throttle plate is rotatable in an opening direction and a closing direction, wherein said throttle plate has at least one leading side and at least one trailing side; and a non-metal portion flow restrictor disposed on said at least one trailing side when said throttle plate is rotating in said opening direction and adapted to reduce airflow through said throttle valve.
2. A throttle valve as in Claim 1 wherein said flow restrictor is generally wedge shaped.
3. A throttle valve as in Claim 1 wherein said flow restrictor is adapted to reduce airflow at generally low throttle plate angles.
4. A throttle valve as in Claim 1 wherein said flow restrictor has at least one protrusion extending outwardly from said throttle plate and adapted to limit contact between said shaft and said flow restrictor.
5. A throttle valve as in Claim 1 wherein said flow restrictor has a raised ridge circumferentially disposed about said flow restrictor and adapted to provide structural support to said flow restrictor and to reduce airflow through said throttle valve.
6. A throttle valve as in Claim 1 wherein said flow restrictor has a raised rib disposed on said flow restrictor and adapted to provide structural support for said flow restrictor.
7. A rotatable airflow control mechanism comprising: a throttle plate adapted to rotate about an axis, wherein said throttle plate is rotatable in an opening direction and a closing direction, wherein said throttle plate has at least one leading side and at least one trailing side; and a non-metal portion flow restrictor disposed on said at least one trailing side when said throttle plate is rotating in said opening direction and adapted to reduce airflow around said airflow control mechanism.
8. A rotatable airflow control mechanism as in Claim 7 wherein said flow restrictor is generally wedge shaped.
9. A rotatable airflow control mechanism as in Claim 7 wherein said rotatable airflow control mechanism is adapted to reduce airflow at generally low throttle plate angles.
10. A rotatable airflow control mechanism as in Claim 7 wherein said flow restrictor has at least one protrusion extending outwardly from said throttle plate.
11. A rotatable airflow control mechanism as in Claim 7 wherein said flow restrictor has a raised ridge circumferentially disposed on said flow restrictor and adapted to provide structural support to said flow restrictor and to reduce airflow through said throttle valve.
12. A rotatable airflow control mechanism as in Claim 7 wherein said flow restrictor has a raised rib disposed about said flow restrictor and adapted to provide structural support to said flow restrictor.
13. A method of manufacturing a rotatable airflow control mechanism comprising: providing a first material; forming the first material as a throttle plate adapted to rotate about an axis; providing a second material having a substantially lower melting temperature than said first material; forming the second material as a flow restrictor adapted to reduce airflow around the airflow control mechanism; and connecting the flow restrictor to the throttle plate without changing the physical structure of the throttle plate.
14. A method of manufacturing as in Claim 13 wherein said forming the second material forms a generally wedge shaped flow restrictor.
15. A method of manufacturing as in Claim 13 wherein said forming the second material forms at least one protrusion extending outwardly from the throttle plate.
16. A method of manufacturing as in Claim 13 wherein said forming the second material forms at least one raised ridge disposed circumferentially about the flow restrictor, which provides structural support to the flow restrictor.
17. A method of manufacturing as in Claim 13 wherein said forming the second material forms a raised rib, which provides structural support to the flow restrictor.
18. A method of manufacturing as in Claim 13 wherein said forming the second material and said connecting the flow restrictor are accomplished substantially simultaneously in an over-molding process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22585500P | 2000-08-16 | 2000-08-16 | |
| US60/225,855 | 2000-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002014721A1 true WO2002014721A1 (en) | 2002-02-21 |
Family
ID=22846521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2001/025611 WO2002014721A1 (en) | 2000-08-16 | 2001-08-16 | Rotatable airflow control mechanism and method of manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2002014721A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1367243A2 (en) * | 2002-05-30 | 2003-12-03 | Aisan Kogyo Kabushiki Kaisha | Intake apparatus for internal-combustion engine |
| EP1975489A3 (en) * | 2007-03-28 | 2010-01-06 | Honeywell International Inc. | Design of a noise suppression wedge for a butterfly outflow valve |
| CN101949330A (en) * | 2010-09-14 | 2011-01-19 | 福建福鼎京科化油器有限公司 | Electric spraying air throttle body of large displacement motorcycle |
| CN108343515A (en) * | 2018-03-14 | 2018-07-31 | 李涛 | Temperature control throttle valve device |
| CN110541938A (en) * | 2019-10-30 | 2019-12-06 | 江苏恒维智信息技术有限公司 | butterfly valve |
| US11162461B2 (en) | 2018-03-14 | 2021-11-02 | Tao Li | Temperature control throttle device for an engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2902254A (en) * | 1956-12-28 | 1959-09-01 | Rust Furnace Company | Butterfly type valve |
| US3176704A (en) * | 1961-11-20 | 1965-04-06 | Universal Oil Prod Co | Carburetor throttle valve |
| US3238955A (en) * | 1962-01-22 | 1966-03-08 | Lockheed Aircraft Corp | Fluid valve noise suppressor |
| US3785628A (en) * | 1971-08-16 | 1974-01-15 | L Lang | Device for the implementation of procedures for the decontamination of internal combustion engine exhaust gases |
| US3960177A (en) * | 1975-03-12 | 1976-06-01 | Baumann Hans D | Low torque and low noise butterfly valve disc |
| US5067506A (en) * | 1989-06-30 | 1991-11-26 | Allied-Signal Inc. | Flight craft with fluid systems which incorporate butterfly valves, and butterfly valve methods and apparatus |
| US5102097A (en) * | 1990-08-23 | 1992-04-07 | Allied-Signal Inc. | Butterfly valve with plural-fence modulator plate |
| US5465756A (en) * | 1994-12-21 | 1995-11-14 | Alliedsignal Inc. | Butterfly valve plate for a pneumatic surge valve |
| US5857617A (en) * | 1997-08-12 | 1999-01-12 | Yiue Feng Enterprise Co., Ltd. | Ventilator control device |
-
2001
- 2001-08-16 WO PCT/US2001/025611 patent/WO2002014721A1/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2902254A (en) * | 1956-12-28 | 1959-09-01 | Rust Furnace Company | Butterfly type valve |
| US3176704A (en) * | 1961-11-20 | 1965-04-06 | Universal Oil Prod Co | Carburetor throttle valve |
| US3238955A (en) * | 1962-01-22 | 1966-03-08 | Lockheed Aircraft Corp | Fluid valve noise suppressor |
| US3785628A (en) * | 1971-08-16 | 1974-01-15 | L Lang | Device for the implementation of procedures for the decontamination of internal combustion engine exhaust gases |
| US3960177A (en) * | 1975-03-12 | 1976-06-01 | Baumann Hans D | Low torque and low noise butterfly valve disc |
| US5067506A (en) * | 1989-06-30 | 1991-11-26 | Allied-Signal Inc. | Flight craft with fluid systems which incorporate butterfly valves, and butterfly valve methods and apparatus |
| US5102097A (en) * | 1990-08-23 | 1992-04-07 | Allied-Signal Inc. | Butterfly valve with plural-fence modulator plate |
| US5465756A (en) * | 1994-12-21 | 1995-11-14 | Alliedsignal Inc. | Butterfly valve plate for a pneumatic surge valve |
| US5857617A (en) * | 1997-08-12 | 1999-01-12 | Yiue Feng Enterprise Co., Ltd. | Ventilator control device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1367243A2 (en) * | 2002-05-30 | 2003-12-03 | Aisan Kogyo Kabushiki Kaisha | Intake apparatus for internal-combustion engine |
| EP1367243A3 (en) * | 2002-05-30 | 2006-06-07 | Aisan Kogyo Kabushiki Kaisha | Intake apparatus for internal-combustion engine |
| EP1975489A3 (en) * | 2007-03-28 | 2010-01-06 | Honeywell International Inc. | Design of a noise suppression wedge for a butterfly outflow valve |
| US7815163B2 (en) | 2007-03-28 | 2010-10-19 | Honeywell International Inc. | Design of a noise suppression wedge for a butterfly outflow valve |
| CN101949330A (en) * | 2010-09-14 | 2011-01-19 | 福建福鼎京科化油器有限公司 | Electric spraying air throttle body of large displacement motorcycle |
| CN108343515A (en) * | 2018-03-14 | 2018-07-31 | 李涛 | Temperature control throttle valve device |
| US11162461B2 (en) | 2018-03-14 | 2021-11-02 | Tao Li | Temperature control throttle device for an engine |
| CN110541938A (en) * | 2019-10-30 | 2019-12-06 | 江苏恒维智信息技术有限公司 | butterfly valve |
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