IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0927727
(2007-10-30)
|
등록번호 |
US-7819096
(2010-11-15)
|
발명자
/ 주소 |
- McConville, Greg P.
- Barber, Yihua S.
- Zagata, Mark A.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
5 |
초록
▼
A cylinder valve operating system for an internal combustion engine includes a camshaft driving a number of intake and exhaust valve operators which may be selectively disabled through the operation of a valving system including a hydraulic phase shifter integrated with the camshaft and connected be
A cylinder valve operating system for an internal combustion engine includes a camshaft driving a number of intake and exhaust valve operators which may be selectively disabled through the operation of a valving system including a hydraulic phase shifter integrated with the camshaft and connected between a source of high pressure oil and at least the intake valve operators. The hydraulic phase shifter allows one group of valves, such as the exhaust valves, to be disabled before the other group of valves, typically the intake valves.
대표청구항
▼
What is claimed is: 1. A cylinder valve operating system for an internal combustion engine, comprising: a camshaft having a plurality of lobes; a plurality of hydraulically controllable intake valve operators driven by said lobes; a plurality of intake valves actuated by said intake valve operators
What is claimed is: 1. A cylinder valve operating system for an internal combustion engine, comprising: a camshaft having a plurality of lobes; a plurality of hydraulically controllable intake valve operators driven by said lobes; a plurality of intake valves actuated by said intake valve operators; a plurality of hydraulically controllable exhaust valve operators driven by said lobes; a plurality of exhaust valves actuated by said exhaust valve operators; a source of high pressure oil; and a valving system for selectively furnishing high pressure oil to said intake valve operators and to said exhaust valve operators, with said valving system comprising a hydraulic phase shifter integrated with said camshaft and connected between said source of high pressure oil and said intake valve operators and said exhaust valve operators, so as to phase the hydraulic control of said intake valve operators with respect to said exhaust valve operators, wherein said hydraulic phase shifter comprises: a valve body having a central bore equipped with a supply port for receiving oil from said high pressure source, and a plurality of outlet ports, with a first outlet port connected with said intake valve operators, and a second outlet port connected with said exhaust valve operators; and a metering surface formed on said camshaft, with said metering surface extending within said central bore of said valve body, and with said metering surface comprising a generally cylindrical surface having a plurality of metering grooves for connecting said supply port with said outlet ports in a phased relationship. 2. A cylinder valve operating system according to claim 1, wherein said valving system further comprises a supply valve for coupling said source of high pressure oil to said hydraulic phase shifter. 3. A cylinder valve operating system according to claim 2, wherein said supply valve further comprises a bypass for routing oil directly from said high pressure source to at least one of said intake valve operators and said exhaust valve operators without passing through said hydraulic phase shifter. 4. A cylinder valve operating system according to claim 1, wherein said valve body comprises a camshaft mounting tower integrated with a cylinder head. 5. A cylinder valve operating system according to claim 1 , further comprising a hydraulic accumulator interposed between said hydraulic phase shifter and at least one of said intake valve operators and said exhaust valve operators. 6. A cylinder valve operating system according to claim 1, wherein said valving system further comprises a bypass for routing oil directly from said high pressure source to at least one of said intake valve operators and said exhaust valve operators without passing through said hydraulic phase shifter. 7. A cylinder valve operating system according to claim 1, wherein said intake valve operators and said exhaust valve operators are carried upon at least one shaft mounted to a cylinder head of an engine. 8. A cylinder valve operating system according to claim 1, wherein said intake valve operators and said exhaust valve operators are carried upon separate shafts mounted to a cylinder head of an engine. 9. A cylinder valve operating system according to claim 1, wherein said intake valve operators and said exhaust valve operators are hydraulically controlled to selectively disable the intake valves and exhaust valves actuated by said intake valve operators and said exhaust valve operators. 10. A cylinder valve operating system according to claim 9, wherein said hydraulic phase shifter cooperates with said intake valve operators and said exhaust valve operators to disable at least one intake valve and at least one exhaust valve, with said at least one exhaust valve being disabled before said at least one intake valve is disabled, whereby exhaust gas will be trapped within a cylinder of the engine. 11. A cylinder valve operating system according to claim 1, wherein said plurality of metering grooves for connecting said supply port with said outlet ports in a phased relationship comprises a continuous, circumferential groove for connecting said supply port with an outlet port operatively connected with at least one exhaust valve operator, and a discontinuous, semi-circumferential groove adjoining said continuous groove, for intermittently connecting said supply port with at least one intake valve operator. 12. A cylinder valve operating system for an internal combustion engine, comprising: a camshaft having a plurality of lobes; a plurality of hydraulically controllable intake valve operators driven by said lobes; a plurality of intake valves actuated by said intake valve operators; a plurality of hydraulically controllable exhaust valve operators driven by said lobes; a plurality of exhaust valves actuated by said exhaust valve operators; a source of high pressure hydraulic oil; and a valving system for selectively furnishing a high pressure deactivation signal to said intake valve operators and to said exhaust valve operators, with said valving system comprising a hydraulic phase shifter integrated with said camshaft and connected between said source of high pressure oil and said intake valve operators and said exhaust valve operators, with said hydraulic phase shifter comprising: a valve body having a central bore equipped with a supply port for receiving oil from said high pressure source, and a plurality of outlet ports, with a first outlet port connected with said intake valve operators, and a second outlet port connected with said exhaust valve operators; and a metering surface formed on said camshaft, with said metering surface extending within said central bore of said valve body, and with said metering surface comprising a generally cylindrical surface having at least one metering groove for connecting said supply port with said outlet ports in a phased relationship. 13. A cylinder valve operating system according to claim 12, wherein said at least one metering groove for connecting said supply port with said outlet ports in a phased relationship comprises a groove for continuously connecting said supply port with an outlet port operatively connected with at least one exhaust valve operator, with said groove also serving to discontinuously connect said supply port with at least one intake valve operator, whereby an exhaust valve will be deactivated before the intake valve for the same cylinder is deactivated. 14. A cylinder valve operating system according to claim 12, wherein said hydraulically controllable intake valve operators and said hydraulically controllable exhaust valve operators each comprise: a camshaft follower; a valve contacting finger; and a hydraulic latching pin slidably located between said camshaft follower and said valve contacting finger, wherein said hydraulically latching pin is responsive to pressure within a passage connected with said hydraulic phase shifter. 15. A cylinder valve operating system according to claim 12, wherein said metering surface is formed upon a journal of said camshaft. 16. A cylinder valve operating system for selectively disabling cylinders of a multicylinder internal combustion engine, comprising: a camshaft having a plurality of lobes; a plurality of hydraulically controllable intake valve operators driven by a first portion of said lobes, with said intake valve operators being controllable to selectively disable intake valves driven by said operators; a plurality of intake valves driven by said intake valve operators; a plurality of hydraulically controllable exhaust valve operators driven by a second portion of said lobes, with said exhaust valve operators being controllable to selectively disable exhaust valves driven by said exhaust valve operators; a plurality of exhaust valves driven by said exhaust valve operators; a valving system for selectively disabling cylinders of the engine by furnishing high pressure oil to said intake valve operators and to said exhaust valve operators, with said valving system comprising a hydraulic phase shifter integrated with said camshaft and connected between a source of high pressure oil and said intake valve operators and said exhaust valve operators, with the hydraulic phase shifter comprising: a valve body having a bore equipped with a supply port for receiving oil from the high pressure source, and a plurality of outlet ports, with a first outlet port connected with the intake valve operators, and a second outlet port connected with the exhaust valve operators; and a metering surface formed on the camshaft, with the metering surface extending within the bore of said valve body, and with the metering surface comprising a generally cylindrical surface having at least one metering groove for connecting said supply port with said outlet ports in a phased relationship, whereby the exhaust valve for one of said cylinders will be disabled before the intake valve for the same cylinder, so as to trap exhaust gas within the disabled cylinder. 17. A cylinder valve operating system for an internal combustion engine, comprising: a camshaft having a plurality of lobes; a plurality of hydraulically controllable intake valve operators driven by said lobes; a plurality of intake valves actuated by said intake valve operators; a plurality of hydraulically controllable exhaust valve operators driven by said lobes; a plurality of exhaust valves actuated by said exhaust valve operators; a source of high pressure hydraulic oil; and a valving system for selectively furnishing a high pressure deactivation signal to said intake valve operators and to said exhaust valve operators, with said valving system comprising a hydraulic phase shifter integrated with said camshaft and connected between said source of high pressure oil and said intake valve operators and said exhaust valve operators, with said hydraulic phase shifter comprising: a valve body having a central bore equipped with a supply port for receiving oil from said high pressure source, and a plurality of outlet ports, with a first outlet port connected with a first group of said intake and exhaust valve operators, and a second outlet port connected with a second group of said intake and exhaust valve operators; and a metering surface formed on said camshaft, with said metering surface extending within said central bore of said valve body, and with said metering surface comprising a generally cylindrical surface having at least one metering groove for connecting said supply port with said outlet ports in a phased relationship, whereby deactivation of said first group of intake and exhaust valve operators will be phased with respect to deactivation of said second group of intake and exhaust valve operators.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.