[특허]Rotary valve for use in an internal combustion engine

Perkins Engines Company Limited

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특허 상세정보

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Rotary valve for use in an internal combustion engine

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-011/087
미국특허분류(USC)	137/625.47; 251/310; 123/080BA
출원번호	US-0000571 (2007-12-13)
등록번호	US-8342204 (2013-01-01)
발명자 / 주소	Dirker, Martin W.
출원인 / 주소	Perkins Engines Company Limited
인용정보	피인용 횟수 : 2 인용 특허 : 35

초록
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In one aspect, the present disclosure is directed to a rotary valve including a valve body having a curved portion and two side portions, wherein a line extending through the respective centers of the side portions defines an axis of rotation of the rotary valve. The valve body may include a first fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a first opening in at least one of the side portions and a second opening in the curved portion. The valve body may also include a second flui...

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1. A rotary valve for use in an internal combustion engine, the rotary valve comprising: a valve body having a curved portion and two side portions, wherein a line extending through the respective centers of the side portions defines an axis of rotation of the rotary valve, wherein the valve body is configured to engage a component of the internal combustion engine for 360 degree rotation about the axis, the valve body including: a first fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a first opening in at least one of the side portions and a second opening in the curved portion;a second fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a third opening in at least one of the side portions and a fourth opening in the curved portion, respectively; anda central passage arranged in the body fluidly isolated from the first and third openings, the axis of rotation comprising a central longitudinal axis of the central passage,wherein the fourth opening has a flow area which is smaller than the flow area of the second opening; andwherein the fourth opening is offset with respect to the second opening in a direction of rotation of the rotary valve. 2. The rotary valve according to claim 1, wherein the curved portion is rotationally symmetric with respect to the axis of rotation of the rotary valve. 3. The rotary valve according to claim 1, wherein the curved portion is a concave surface. 4. The rotary valve according to claim 1, wherein the curved portion is a spherical surface forming a spherical segment of the valve body. 5. The rotary valve according to claim 4, wherein the side portions are equally spaced from a center of the spherical segment. 6. The rotary valve according to claim 1, wherein at least one of the first and second fluid connections is open towards both side portions. 7. The rotary valve according to claim 1, further including more than one of the fourth opening. 8. The rotary valve according to claim 1, wherein the fourth opening defines a flow area which is less than 50% of the flow area of the second opening. 9. The rotary valve according claim 1, wherein the first opening in the side portion has an angular extension of more than 180° along a direction of rotation of the rotary valve. 10. The rotary valve according to claim 1, wherein the first opening widens in a direction away from a plane, which is parallel to the side portions. 11. The rotary valve according to claim 1, wherein the valve body is substantially symmetric with respect to a plane, which is parallel to the side portions and bisects the valve body. 12. The rotary valve according to claim 1, wherein the first fluid connection and the first opening in the side portion each have a flow area which is equal to or larger than the flow area of the third opening. 13. The rotary valve according to claim 1, wherein at least the surfaces defined by at least one of the first and second fluid connections are made of a heat insulative material. 14. The rotary valve according to claim 1, wherein two separate sets of first and second fluid connections are provided, the sets being offset in the direction of rotation of the rotary valve by 180°. 15. The rotary valve according to claim 1, wherein at least one of the second fluid connections defines a straight flow path which is angled with respect to the side face, to which it opens. 16. A cylinder head assembly including a cylinder head having at least one valve chamber and at least one rotary valve according to claim 1, the rotary valve being accommodated in the valve chamber. 17. The rotary valve according to claim, wherein the central passage extends through the valve body from a fifth opening in one of the side portions to a sixth opening in the other of the side portions. 18. The rotary valve according to claim 17, the valve body forming a chamber fluidly connected to the first and third openings, and fluidly isolated from the fifth and sixth openings. 19. The rotary valve according to clam 18, wherein the chamber is fluidly connected to the second and fourth openings, and fluidly isolated from the central passage. 20. The rotary valve according to claim 1, wherein the second opening is separated from the fourth opening by the curved portion. 21. The rotary valve according to claim 20, wherein the curved portion forms a web extending substantially parallel to the axis of rotation, the web separating the second opening from the fourth opening. 22. A rotary valve for use in an internal combustion engine, the rotary valve comprising: a valve body having a curved portion and two side portions, wherein a line extending through the respective centers of the side portions defines an axis of rotation of the rotary valve, the valve body including: a first fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a first opening in at least one of the side portions and a second opening in the curved portion;a second fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a third opening in at least one of the side portions and a fourth opening in the curved portion, respectively; anda central passage, extending between the side portions, for accommodating a drive shaft therethrough;wherein the fourth opening has a flow area which is smaller than the flow area of the second opening; andwherein the fourth opening is offset with respect to the second opening in a direction of rotation of the rotary valve. 23. The rotary valve according to claim 22, wherein at least one of the side portions includes an annular protrusion surrounding the central passage. 24. The rotary valve according to claim 23, wherein the second opening defines at least one of a curved leading edge and a curved trailing edge. 25. A rotary valve for use in an internal combustion engine, the rotary valve comprising: a valve body having a curved portion and two side portions, wherein a line extending through the respective centers of the side portions defines an axis of rotation of the rotary valve, the valve body including: a first fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a first opening in at least one of the side portions and a second opening in the curved portion;a second fluid connection arranged in the body to fluidly connect at least one of the side portions and the curved portion, via a third opening in at least one of the side portions and a fourth opening in the curved portion, respectively;a central passage, extending between the side portions, for accommodating a drive shaft therethrough; anda mounting opening extending between the first fluid connection and the central passage, the mounting opening being aligned with the second opening;wherein the fourth opening has a flow area which is smaller than the flow area of the second opening; andwherein the fourth opening is offset with respect to the second opening in a direction of rotation of the rotary valve.

이 특허에 인용된 특허 (35)

이 특허를 인용한 특허 피인용횟수: 2

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특허 상세정보

Rotary valve for use in an internal combustion engine

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이 특허에 인용된 특허 (35)

이 특허를 인용한 특허 피인용횟수: 2

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Rotary valve for use in an internal combustion engine

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이 특허에 인용된 특허 (35)

이 특허를 인용한 특허 피인용횟수: 2

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IPC 상세정보(version : 201201)

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