WO2012067610A1 - Hinged rocker arm and valve openning arrangement including a hinged rocker arm - Google Patents
Hinged rocker arm and valve openning arrangement including a hinged rocker arm Download PDFInfo
- Publication number
- WO2012067610A1 WO2012067610A1 PCT/US2010/056954 US2010056954W WO2012067610A1 WO 2012067610 A1 WO2012067610 A1 WO 2012067610A1 US 2010056954 W US2010056954 W US 2010056954W WO 2012067610 A1 WO2012067610 A1 WO 2012067610A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contacting surface
- rocker arm
- valve
- wing
- set forth
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
Definitions
- the present invention relates generally to rocker arras.
- US2010/0071643 which is incorporated by reference, discloses a valve opening arrangement including rocker arms for opening and closing valves
- US2010/0071643 discloses that it can be desirable to provide a hydrauIicaiSy movable piston for opening and closing a valve at a different timing than would occur using only a rocker arm and a cam.
- the inventor has recognized that there is limited space available on the rocker arms, making it difficult to provide such a piston in many circumstances, it is desirable to address this problem.
- a hinged rocker arm comprises a first wing comprising a first opening for receiving a rocker shaft, and a first contacting surface, and a second wing comprising a second opening for receiving the rocker shaft, the second wing comprising a second contacting surface, wherein, when the first and second wings are mounted on the rocker shaft, the first contacting surface and the second contacting surface are adapted to contact each other and thereby transfer a force in a direction transverse to an axi of the rocker shaft.
- a valve opening arra.nge.ment comprises a valve arrangement comprising a valve, the valve being movable against a force from a first val e position to a second valve positi n, a rocker shaft, and a hi ged rocker arm comprising a first wing pivotably mounted on the rocker shaft and a first contacting surface, and second wing pivotably mounted on the rocker shaft and comprising a second contacting
- the first contacting surface and the second contacting surface being adapted to contact each other and thereby transfer a force in a direction transverse to an axis of the rocker shaft such that a third contacting surface on the hinged rocker arm contacts the valve arrangement and moves the valve against the force from the first valve position to the second valve position.
- FIG I is a perspective view of a hinged rocker arm according to an aspect of the present invention showing wings of the rocker arm pivoted t a contacting position;
- FIG. 2 is a perspective view of a hinged rocker arm according to an aspect of the present invention showing wings of the rocker ami pi voted to a non-contacting position;
- FIG. 3 is an exploded, perspective view of a hinged rocker arm according to an aspect of the present inventi on;
- FIG. 4 is a perspective, partially cross-sectional view of a valve opening arrangement according to an aspect of the present invention.
- FIG. 5 is a perspective view of a valve opening arrangement according to an aspect of the present invention.
- FIGS. 1-3 show a hinged rocker ami 21 according to an aspect of the present invention.
- the hinged rocker arm 21 comprises a first wing 23 comprising a first opening 25 for receiving a
- the hinged rocker arm 21 also comprises a second wing 31 comprising a second opening 33 for receiving the rocker shaft and s second contacting surface 35.
- the first contacting surface 29 and the second contacting surface 35 are adapted to contact each other as seen in FIG. 1 and thereby transfer a force Fl in a direction transverse to an axis of the rocker shaft.
- the first and second wings 23 and 31 are pivotable relati ve to each other about the rocker shaft, the first and second contacting surfaces 29 and 35 can also be moved out of contact with each other by. inter alia, pivoting one or both of the first and second wings.
- At least one of the first contacting surface 29 and the second contacting surface 35 is a surface of a piston 37 movably disposed in a cylinder 39 on the hinged rocker arm 21.
- FIG. 4 shows the cylinder 39 and piston 37 provided on the first wing 23, however, the cylinder could be provi ded on the second wing 31 or a cylinder and pi ston could be provi ded on both the fi rst and the second wing.
- the piston 37 will ordinarily be hydraulic-ally driven, although it may be driven in other ways, such as pneumatically driven or driven electrically, such as by means of a solenoid.
- the piston 37 may be controlled by a check valve (not shown) so thai, when the valve is open and a force is removed from the piston, the cylinder 39 will fill with hydraulic fluid, when the valve is open and a force is applied to the piston, the fluid will drain from the cylinder, and, when the valve is closed and the cylinder is full, the piston will be fixed in an outwardly extended position.
- the first wing 23 can comprise a cam follower 41 , which may include a roller cam 43 rotatahSy mounted on an axle 45.
- the second wing 3 1 comprises a third contacting surface 47 arranged so that a force applied to the third contacting surface causes the second wing to pivot independently from the first wing 23,
- the third contacting surface 47 can be in a variety of forms but is shown in FIGS. 1 -5 as part of a rod 49 extending parallel to an axis of the second opening 33.
- the hinged rocker arm 21 can be used in, for example, a valve opening arrangement 51 as shown in FIGS. 4 and 5.
- the valve opening arrangement 51 can comprise a valve 53a and 53b (FIG. 5) that is movable against a force F2, such as that from a spring (not shown), from a first vaive position (such as a closed position relative to gaskets 55a and 55b) to a second valve position such as the open position relative to the gaskets, as see in FIG. 5.
- the particular valve opening arrangement 51 shown in FIG. 5 comprises a yoke or bridge 57 connected to two valve stems 59a and 59b associated with two valves 53a and 53b, however, the vaive opening
- Valve opening arrangements comprising plural valves connected to a bridge, including uses for such
- the valve opening arrangement 51 comprises a rocker shaft 27.
- a hinged rocker arm 21 comprising a first wing 23 pivotabiy mounted on the rocker shaft 27 and comprising a first contacting surface 29. and a second wing 31 pivotabiy mounted on the rocker shaft and comprising a second contacting surface 35 is provided.
- the first contacting surface 29 and the second contacti g surface 35 are adapted to contact each other and thereby transfer a force in a direction transverse to an axis A of the rocker shaft such thai a val ve arrangement contacting surface 61 on the hinged rocker arm 21 contacts a contacting surface 63 on the bridge 57 and moves the valve 53a and 53b against the force F from the first valve position to the second valve position.
- a second rocker arm 65 can be pivotably .mounted on the rocker shaft 27 and can comprise a fourth contacting surface 67.
- the second rocker arm 65 is pivotable between a first second rocker ami position and a second second rocker arm position and is arranged to contact the bridge 57, with the fourth contacting surface 67 contacting the contacting surface 63 on the bridge, to move the valve 53a and 3b against the force F2 from the first valve position to the second valve position when the second rocker ami pivots from the first second rocker ami position to the second second rocker arm position.
- the second rocker arm 65 can comprise a fifth contacting surface 69.
- the fifth contacting surface 69 and the third contacting surface 47 on the hinged rocker arm 21 can be arranged so that when the second rocker arm pivots from the first second rocker arm position to the second second rocker arm position, the fifth contacting surface 69 and the third contacting surface 47 contact each other as seen in FIG. 4 so that a force F3 in a direction transverse to the axis of the rocker shaft 27 is transferred between the second rocker ami and the hinged rocker arm.
- the portion of the hinged rocker arm to which the third contacting surface 47 is attached in FIGS. 1-5, the second wing 31
- valves 53a and 53b can both be moved against, the force F2 by the second rocker arm 65 when it pivots from the first second rocker arm position to the second second rocker arm position and the fourth contacting surface 67 of the second rocker arm contacts the contacting surface 63 on the bridge 57.
- the fourth contacting surface 67 of the second rocker arm 65 can be arranged to contact the bridge 57 in such a manner that both of the valves 53a and 53b are moved against the forces F2, such as by contacting the bridge in a central part of the bridge.
- valve arrangement contacting surface 61 can be positioned to avoid contact with the contacting surface 63 on the bridge or to contact the contacting surface 63 without moving the contacting surface 63 beyond the position to which it is moved via contact with the fourth contacting surface 67 of the second rocker arm 65.
- the force FJ FJ
- valve arrangement contacting surface 61 moves the second wing 33 and the valve arrangement contacting surface 61 beyond the point to which it is moved by the second rocker arm 65 alone, which can move the valves or, depending upon the position at which the valve arrangement contacting surface 61 contacts the contacting surface 63 of the bridge 57, one of the valves.
- the valve arrangement contacting surface 61 contacts the contacting surface 63 of the bridge 57 inboard of the point at which the fourth contacting surface 67 contacts the contacting surface 63 of the bridge. Consequently, when the piston 37 is extended from the cylinder 39, the valve arrangement contacting surface 6 i of the hinged rocker ami 21 can contact the contacting surface 63 of the bridge a manner so that only valve 53a is affected by the extension of the piston.
- cams on the camshaft 71 (FIGS. 4 and 5) that eon tacts the cam follower 41 on the hinged rocker arm 21 and a cam follower (not shown) on the second rocker arm 65 can be arranged to cause the hinged rocker arm to pivot independently of the second rocket arm.
- contact between the valve arrangement contacting surface 61 on the hinged rocker arm 21 and the contacting surface 63 on the bridge 57 can occur when there is no contact between the fourth contacting surface 67 of the second rocker ami and the contacting surface 63 on the bridge.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080070242.8A CN103314189B (en) | 2010-11-17 | 2010-11-17 | Hinge rocking arm and comprise the valve opening device of hinge rocking arm |
EP10859762.6A EP2640938B1 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve openning arrangement including a hinged rocker arm |
AU2010363967A AU2010363967B2 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve opening arrangement including a hinged rocker arm |
PCT/US2010/056954 WO2012067610A1 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve openning arrangement including a hinged rocker arm |
CA2817091A CA2817091A1 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve opening arrangement including a hinged rocker arm |
BR112013012178-5A BR112013012178B1 (en) | 2010-11-17 | 2010-11-17 | ARTICULATED SWING ARM AND VALVE OPENING ARRANGEMENT INCLUDING AN ARTICULATED SWING ARM |
RU2013126078/06A RU2562334C2 (en) | 2010-11-17 | 2010-11-17 | Valve rocker and opening gear for valve with such rocker |
JP2013539803A JP5835817B2 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve opening mechanism including hinged rocker arm |
US13/883,775 US8904982B2 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve opening arrangement including a hinged rocker arm |
KR1020137015441A KR101628814B1 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve opening arrangement including a hinged rocker arm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2010/056954 WO2012067610A1 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve openning arrangement including a hinged rocker arm |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012067610A1 true WO2012067610A1 (en) | 2012-05-24 |
Family
ID=46084308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/056954 WO2012067610A1 (en) | 2010-11-17 | 2010-11-17 | Hinged rocker arm and valve openning arrangement including a hinged rocker arm |
Country Status (10)
Country | Link |
---|---|
US (1) | US8904982B2 (en) |
EP (1) | EP2640938B1 (en) |
JP (1) | JP5835817B2 (en) |
KR (1) | KR101628814B1 (en) |
CN (1) | CN103314189B (en) |
AU (1) | AU2010363967B2 (en) |
BR (1) | BR112013012178B1 (en) |
CA (1) | CA2817091A1 (en) |
RU (1) | RU2562334C2 (en) |
WO (1) | WO2012067610A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013215946A1 (en) * | 2013-08-12 | 2015-02-12 | Avl List Gmbh | Valve operating device for changing the valve lift |
US20240125253A1 (en) * | 2022-10-12 | 2024-04-18 | Cummins Inc. | Valve actuation system comprising a discrete lost motion device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101895101B1 (en) | 2014-07-25 | 2018-09-04 | 현대중공업 주식회사 | Joint Structure of Yoke and Rocker Arm of Vessel Engine |
US10683782B2 (en) | 2014-09-29 | 2020-06-16 | Volvo Truck Corporation | Two stroke, opposed piston engine with compression release brake arrangement and method |
TR201720332A2 (en) * | 2017-12-14 | 2019-07-22 | Ford Otomotiv Sanayi As | A CULTIVATOR MECHANISM |
EP3734029B1 (en) * | 2017-12-28 | 2022-12-28 | Weichai Power Co., Ltd. | Valve rocker arm assembly, variable air distribution mechanism, and engine |
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US2024401A (en) * | 1933-05-27 | 1935-12-17 | Robert R Page | Rocker arm for overhead valve gas engines |
WO2008073122A1 (en) * | 2006-12-12 | 2008-06-19 | Mack Trucks, Inc. | Valve opening arrangement and method |
WO2008073123A1 (en) * | 2006-12-12 | 2008-06-19 | Mack Trucks, Inc. | Valve opening arrangement and method |
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2010
- 2010-11-17 WO PCT/US2010/056954 patent/WO2012067610A1/en active Application Filing
- 2010-11-17 CA CA2817091A patent/CA2817091A1/en not_active Abandoned
- 2010-11-17 JP JP2013539803A patent/JP5835817B2/en active Active
- 2010-11-17 BR BR112013012178-5A patent/BR112013012178B1/en not_active IP Right Cessation
- 2010-11-17 KR KR1020137015441A patent/KR101628814B1/en active IP Right Grant
- 2010-11-17 RU RU2013126078/06A patent/RU2562334C2/en active
- 2010-11-17 CN CN201080070242.8A patent/CN103314189B/en active Active
- 2010-11-17 US US13/883,775 patent/US8904982B2/en active Active
- 2010-11-17 EP EP10859762.6A patent/EP2640938B1/en active Active
- 2010-11-17 AU AU2010363967A patent/AU2010363967B2/en active Active
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US2024401A (en) * | 1933-05-27 | 1935-12-17 | Robert R Page | Rocker arm for overhead valve gas engines |
WO2008073122A1 (en) * | 2006-12-12 | 2008-06-19 | Mack Trucks, Inc. | Valve opening arrangement and method |
WO2008073123A1 (en) * | 2006-12-12 | 2008-06-19 | Mack Trucks, Inc. | Valve opening arrangement and method |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013215946A1 (en) * | 2013-08-12 | 2015-02-12 | Avl List Gmbh | Valve operating device for changing the valve lift |
US10830159B2 (en) | 2013-08-12 | 2020-11-10 | Avl List Gmbh | Valve-actuating device for varying the valve lift |
US20240125253A1 (en) * | 2022-10-12 | 2024-04-18 | Cummins Inc. | Valve actuation system comprising a discrete lost motion device |
Also Published As
Publication number | Publication date |
---|---|
AU2010363967B2 (en) | 2016-02-11 |
CA2817091A1 (en) | 2012-05-24 |
EP2640938A1 (en) | 2013-09-25 |
RU2562334C2 (en) | 2015-09-10 |
US8904982B2 (en) | 2014-12-09 |
CN103314189B (en) | 2015-11-25 |
KR20140010001A (en) | 2014-01-23 |
JP5835817B2 (en) | 2015-12-24 |
AU2010363967A1 (en) | 2013-05-30 |
EP2640938B1 (en) | 2017-02-15 |
RU2013126078A (en) | 2014-12-27 |
BR112013012178B1 (en) | 2020-09-24 |
JP2013543083A (en) | 2013-11-28 |
EP2640938A4 (en) | 2014-05-28 |
CN103314189A (en) | 2013-09-18 |
KR101628814B1 (en) | 2016-06-21 |
US20130220249A1 (en) | 2013-08-29 |
BR112013012178A2 (en) | 2016-08-16 |
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