Conical air flow valve having improved flow capacity and control
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-005/02
F16K-011/00
F16K-027/00
출원번호
US-0748386
(2010-03-27)
등록번호
US-8596243
(2013-12-03)
발명자
/ 주소
Perr, J. Victor
출원인 / 주소
Cummins, Inc.
대리인 / 주소
Krieg DeVault, LLP
인용정보
피인용 횟수 :
1인용 특허 :
25
초록▼
A conical rotary valve includes a conical valve body including a frustum of a cone and a first fluid passageway. The valve further includes a conical engagement body at least partially covering the conical valve body, where the conical engagement body comprising a second fluid passageway. The valve
A conical rotary valve includes a conical valve body including a frustum of a cone and a first fluid passageway. The valve further includes a conical engagement body at least partially covering the conical valve body, where the conical engagement body comprising a second fluid passageway. The valve includes a valve actuator rotatably engaged to the conical valve body to provide a variable flow area that includes an intersecting area of the first fluid passageway and the second fluid passageway. The first fluid passageway and the second fluid passageway are structured such that a value δAf/δθv is monotonically increasing, where Af is the variable flow area and θv is a rotational angle of the conical valve body.
대표청구항▼
1. An apparatus, comprising: a conical valve body including a frustum of a cone, the conical valve body disposed in an engine gaseous fluid stream and having a first fluid passageway;a conical engagement body at least partially covering the conical valve body and having a second fluid passageway; an
1. An apparatus, comprising: a conical valve body including a frustum of a cone, the conical valve body disposed in an engine gaseous fluid stream and having a first fluid passageway;a conical engagement body at least partially covering the conical valve body and having a second fluid passageway; anda valve actuator that rotates the conical valve body to provide a variable flow area therethrough, the variable flow area comprising an intersecting area of the first fluid passageway and the second fluid passageway. 2. The apparatus of claim 1, wherein the first fluid passageway comprises a slot having an aspect ratio greater than one. 3. The apparatus of claim 1, wherein the first fluid passageway is shaped such that a value δAf/δθv is monotonically increasing, wherein Af is the variable flow area and θv is a rotational angle of the conical valve body. 4. The apparatus of claim 3, wherein the first fluid passageway is shaped such that a value Aeff is substantially linear with θv, wherein Aeff is an effective flow area of the variable flow area. 5. The apparatus of claim 1, wherein the second fluid passageway is shaped such that a value δAf/δθv is monotonically increasing, wherein Af is the variable flow area and θv is a rotational angle of the conical valve body. 6. The apparatus of claim 5, wherein the second fluid passageway is shaped such that a value Aeff is substantially linear with θv, wherein Aeff is an effective flow area of the variable flow area. 7. The apparatus of claim 1, wherein a maximum of the variable flow area comprises a maximum effective flow area at least equal to an effective flow area that would be exhibited by a flapper valve in the engine gaseous fluid stream. 8. The apparatus of claim 1, wherein a maximum of the variable flow area exhibits a minimum pressure drop lower than X, wherein X=ΔProtary−0.4*(ΔProtary−ΔPflap), wherein ΔProtary is a minimum pressure drop that would be exhibited by a flat rotary valve in the engine gaseous fluid stream, and wherein ΔPflap is a minimum pressure drop that would be exhibited by a flapper valve in the engine gaseous fluid stream. 9. The apparatus of claim 1, wherein a maximum of the variable flow area exhibits a minimum pressure drop lower than 85% of a minimum pressure drop that would be exhibited by a flat rotary valve in the engine gaseous fluid stream. 10. The apparatus of claim 1, wherein the valve actuator engages the conical valve body along an outer circumference of the conical valve body. 11. The apparatus of claim 1, wherein the engine gaseous fluid stream comprises at least one stream selected from the streams consisting of: an engine exhaust stream, an engine intake stream, an exhaust gas recirculation (EGR) stream, an EGR cooler bypass stream, a compressor bypass stream, a turbine bypass stream, and an aftertreatment component bypass stream. 12. A conical rotary valve, comprising: a conical valve body having a frustum of a cone and a first fluid passageway;a conical engagement body at least partially covering the conical valve body, the conical engagement body comprising a second fluid passageway;a valve actuator rotatably engaged to the conical valve body to provide a variable flow area comprising an intersecting area of the first fluid passageway and the second fluid passageway; andwherein the first fluid passageway and the second fluid passageway are structured such that δAf/δθv is monotonically increasing for at least θv less than 30 degrees, wherein Af is the variable flow area and θv is a rotational angle of the conical valve body. 13. The conical rotary valve of claim 12, wherein the variable flow area at a fully rotated position of the conical valve body comprises a maximum effective flow area at least equal to an effective flow area that would be exhibited by a flapper valve having a diameter equivalent to a diameter of the cone. 14. The conical rotary valve of claim 12, wherein the variable flow area at a fully rotated position of the conical valve body comprises a maximum effective flow area at least 25% greater than an effective flow area that would be exhibited by a flat rotary valve having a diameter equivalent to a diameter of the cone. 15. The conical rotary valve of claim 12, wherein the variable flow area at a fully rotated position of the conical valve body comprises a maximum effective flow area at least 50% greater than an effective flow area that would be exhibited by a flat rotary valve having a diameter equivalent to a diameter of the cone. 16. The conical rotary valve of claim 12, wherein the first fluid passageway comprises a slot having an aspect ratio greater than one. 17. The conical rotary valve of claim 12, wherein the second fluid passageway comprises a slot having an aspect ratio greater than one. 18. The conical rotary valve of claim 12, wherein δAf/δθv is monotonically increasing for all values of θv. 19. A system, comprising: an internal combustion engine having a gaseous fluid stream;a conical rotary valve disposed in the gaseous fluid stream, the conical rotary valve having a variable flow area therethrough as a function of a rotational angle of the conical rotary valve; anda valve actuator that rotates the conical rotary valve to modulate the variable flow area. 20. The system of claim 19, the conical rotary valve comprises an effective flow area therethrough as a substantially linear function of the rotational angle of the conical rotary valve. 21. The system of claim 19, wherein a value δAf/δθv is monotonically increasing, wherein Af is the variable flow area and θv is the rotational angle. 22. The system of claim 19, further comprising: a flow request module structured to interpret an effective flow area target; anda valve characteristic module structured to determine a rotational position target for the conical rotary valve in response to the effective flow area target; anda valve control module structured to command the valve actuator in response to the rotational position target. 23. The system of claim 22, wherein the rotational position target is a substantially linear function of the effective flow area target. 24. The system of claim 23, wherein a value δAf/δθv is monotonically increasing, wherein Af is the variable flow area and θv is the rotational angle.
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이 특허에 인용된 특허 (25)
Bareis, Bernd; Elsaesser, Mathias; Bender, Franz, Control valve, especially for an internal combustion engine, for the controlled recycling of exhaust gases.
Sheridan Todd A. (Franklin IN) Ghuman A. S. (Columbus IN) May Angie R. (Columbus IN) Radovanovic Rod (Columbus IN) Janssen John M. (Columbus IN) Woon Peter V. (Columbus IN), Cooled exhaust gas recirculation system with load and ambient bypasses.
King ; Sr. Lloyd H. (5222 Green Farms Rd. Edina MN 55436) King Joseph A. (16261 S. Temple Dr. Minnetonka MN 55343), Self-draining backflow prevention valve.
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