US20080006232A1 - Apparatus and method for coupling and decoupling actuating elements of a valve drive of an internal combustion engine - Google Patents
Apparatus and method for coupling and decoupling actuating elements of a valve drive of an internal combustion engine Download PDFInfo
- Publication number
- US20080006232A1 US20080006232A1 US11/891,053 US89105307A US2008006232A1 US 20080006232 A1 US20080006232 A1 US 20080006232A1 US 89105307 A US89105307 A US 89105307A US 2008006232 A1 US2008006232 A1 US 2008006232A1
- Authority
- US
- United States
- Prior art keywords
- armature
- locking element
- end position
- coupling
- actuating elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
- H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- 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
- F01L1/185—Overhead end-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
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
-
- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/031—Electromagnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
- H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
Definitions
- the invention relates to an apparatus and a method for coupling or decoupling two actuating elements of a valve drive of an internal combustion engine including an electro-magnetic looking mechanism.
- Such an apparatus for coupling and decoupling two actuating elements of a valve gear of an internal combustion engine is known from EP 0 833 041 A1.
- the apparatus has an electromagnet which is mounted in the cylinder head of the internal combustion engine and whose armature can assume two end positions.
- the armature actuates a locking element which acts on the pivot lever.
- the electromagnet In order to actuate the locking element, the electromagnet must be continuously energized, resulting in an unnecessarily high consumption of electrical energy.
- a method and apparatus for coupling or decoupling two actuating elements of a valve drive of an internal combustion engine for operating a gas exchange valve comprising a locking element movable between two end positions for coupling the actuating elements, an electromagnet for actuating the movable locking element, a permanent magnet is associated with the armature for holding the armature and the locking element in one end position and means for biasing the armature and the locking element in the opposite end position, the electromagnet is energizable in one sense for moving the armature into one end position in which the armature is retained by the permanent magnet with a force greater than a counteracting force generated by the biasing means, and in the opposite sense so as to generate a force exceeding that of the permanent magnet for moving the armature in the opposite end position, where it is retained by said biasing means.
- a significant advantage of the invention is provided by the permanent magnetic force additionally acting on the armature. As a result of this, after the energization by the armature is discontinued the armature retains at least one of its positions in which it is held by the permanent magnet or, respectively, the spring. As a result the electromagnet does not have to be continuously energized but needs to be energized only shortly for moving the armature from one end position to the other.
- the armature advantageously leaves its retained position as a result of renewed energization of the electromagnet with reversed polarization, which requires only a short current pulse.
- a further advantage results from the fact that the permanent magnetic force can be applied by the armature which has been magnetized by the previous energization.
- the permanent magnetic force is advantageously applied by a permanent magnet which is arranged in the magnetic circuit, in particular in the armature, which ensures a stable state in one position over an extended time period.
- the apparatus also includes a restoring spring for acting on the armature, which restoring spring is capable of moving the armature without using electrical energy.
- the permanent magnetic force is advantageously greater than the force of the restoring spring, which ensures a stable position of the armature, and, in the other end position, the permanent magnetic force is smaller than the force of the restoring spring, so that the armature is firmly held in the other end position by the spring.
- FIG. 1 is a partial sectional view of an apparatus which has an element for coupling two actuating elements of a valve drive of an internal combustion engine which act optionally on a gas exchange valve, wherein an electromagnet interacts with an armature,
- FIG. 2 is a sectional view of the apparatus, wherein the armature is in a first end position
- FIG. 3 is a sectional view of the apparatus, wherein the armature is in a second end position.
- the invention resides in an apparatus for coupling and decoupling two actuating elements 2 , 3 of a valve drive of an internal combustion engine which actuating elements act optionally on a gas exchange valve 1 , wherein camshaft adjusters, camshafts, equalizing elements, supporting elements or cam followers, for example actuating levers or bucket tappets, can be provided as actuating elements 2 , 3 .
- An apparatus according to the invention with switchable actuating levers 2 , 3 is disclosed in the following figures.
- FIG. 1 shows parts of the valve gear for actuating the at least one gas exchange valve 1 of the internal combustion engine having an inner lever 2 and an outer lever 3 .
- the inner lever 2 is mounted so as to be pivotable with its first end about a shaft 4 , with the shaft 4 being supported on the outer lever 3 and, when locked, is supported with its second end on an element 5 of the apparatus for coupling the inner lever 2 and outer lever 3 .
- the inner lever 2 acts on an idle travel spring 14 .
- the outer lever 3 has for example two arms 7 which are provided, for example, with cam surfaces 6 on which at least one cam 18 with a small stroke can act.
- the arms 7 of the outer lever 3 surround the inner lever 2 which can be actuated by at least one cam 17 with a large stroke.
- the outer lever 3 is supported at one end at least indirectly on a component 8 of the internal combustion engine, it being possible for the component 8 to be a valve play-adjusting element, a housing part of the internal combustion engine or a bearing point. At the other end it acts on the gas exchange valve 1 .
- the system is therefore comprised of two levers, that is, the outer lever 3 , which is supported in the present case on the hydraulic valve play-adjusting element 8 and acts on the valve stem la of the gas exchange valve 1 which is to be actuated, and the inner lever 2 which is mounted on the outer lever 3 .
- the element 5 is provided.
- the element 5 can be acted on by an electromagnet 9 in a locking direction 12 and an unlocking direction 13 , said electromagnet 9 being composed of a coil 9 a , a yoke 9 b and an armature 10 .
- the armature 10 is operatively connected to the element 5 , i.e. in the present exemplary embodiment the armature 10 is connected to the element 5 .
- a spring element 11 additionally acts on the element 5 in the locking direction 12 .
- the element 5 can be pushed in the locking direction 12 by the spring element 11 and/or the armature 10 of the electromagnet 9 , and can be pushed in the unlocking direction 13 by the armature 10 which acts as a restoring element.
- the invention proposes that the apparatus have a permanent magnetic device 15 for acting on the armature 10 .
- the permanent magnetic device 15 is a component of the armature 10 , which is otherwise fabricated from nonpermanent magnetic material, or the permanent magnetic force is applied by the armature 10 which has been magnetized by preceding energization.
- FIG. 2 shows the element 5 of the apparatus in the locked position.
- the electromagnet 9 is switched to a deenergized setting, as a result of which the spring element 11 pushes the armature 10 at least partially out of the electromagnet 9 in the locking direction 12 until the element 5 bears against a stop 16 which is preferably provided on the outer lever 3 .
- This position is stable without energization of the electromagnet 9 since the force of the spring element 11 is higher than the effect of the permanent magnetic device 15 which is reduced owing to the large distance between the armature 10 and the yoke 9 b .
- the inner lever 2 is connected in a positively locking fashion to the outer lever 3 , i.e. the cam 17 generating a large stroke acts via the inner lever 2 on the outer lever 3 which then actuates the gas exchange valve 1 , while the cam 18 generating the small stroke operates in idle.
- FIG. 3 shows the element 5 of the apparatus in the unlocked position.
- the electromagnet 9 is briefly energized, so that the armature 10 is pulled into a recess 19 which is formed by the yoke 9 b .
- the element 5 which is connected to the armature 10 is pulled away from under the inner lever 2 by said armature against the force of the spring element 11 .
- the inner lever 2 is deactivated, i.e. the cam 18 with a small stroke acts on the outer lever 3 which then actuates the gas exchange valve 1 , with the inner lever 2 , on which the cam 17 with a large stroke acts, merely carrying out an oscillating idle movement on the outer lever 3 .
- the armature 10 is pulled into the recess 19 by brief energization of the electromagnet 9 . Because of the small distance between the armature 10 and the recess 19 , the effect of the permanent magnetic device 15 is greater than the force of the spring element 11 , for which reason the armature 10 also remains in this position without energization of the electromagnet 9 , which results in significantly reduced consumption of electrical energy.
- the electromagnet 9 is briefly energized with reversed polarity.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
- This is a Continuation-In-Part Application of pending International Application Patent PCT/EP2006/000492 filed Jan. 20, 2006 and claiming the priority of
German Patent Application 10 2005 006 056.0 filed Feb. 10, 2005. - The invention relates to an apparatus and a method for coupling or decoupling two actuating elements of a valve drive of an internal combustion engine including an electro-magnetic looking mechanism.
- Such an apparatus for coupling and decoupling two actuating elements of a valve gear of an internal combustion engine is known from EP 0 833 041 A1. The apparatus has an electromagnet which is mounted in the cylinder head of the internal combustion engine and whose armature can assume two end positions. The armature actuates a locking element which acts on the pivot lever. In order to actuate the locking element, the electromagnet must be continuously energized, resulting in an unnecessarily high consumption of electrical energy.
- It is the object of the present invention to provide a method and an apparatus for coupling and decoupling two actuating elements of a valve drive of an internal combustion engine which operates with a high level of reliability and consumes a significantly reduced amount of electrical energy.
- In a method and apparatus for coupling or decoupling two actuating elements of a valve drive of an internal combustion engine for operating a gas exchange valve, comprising a locking element movable between two end positions for coupling the actuating elements, an electromagnet for actuating the movable locking element, a permanent magnet is associated with the armature for holding the armature and the locking element in one end position and means for biasing the armature and the locking element in the opposite end position, the electromagnet is energizable in one sense for moving the armature into one end position in which the armature is retained by the permanent magnet with a force greater than a counteracting force generated by the biasing means, and in the opposite sense so as to generate a force exceeding that of the permanent magnet for moving the armature in the opposite end position, where it is retained by said biasing means.
- A significant advantage of the invention is provided by the permanent magnetic force additionally acting on the armature. As a result of this, after the energization by the armature is discontinued the armature retains at least one of its positions in which it is held by the permanent magnet or, respectively, the spring. As a result the electromagnet does not have to be continuously energized but needs to be energized only shortly for moving the armature from one end position to the other.
- The armature advantageously leaves its retained position as a result of renewed energization of the electromagnet with reversed polarization, which requires only a short current pulse.
- A further advantage results from the fact that the permanent magnetic force can be applied by the armature which has been magnetized by the previous energization. This provides an apparatus of simple design for coupling and decoupling two actuating elements of a valve drive of an internal combustion engine with low power consumption.
- The permanent magnetic force is advantageously applied by a permanent magnet which is arranged in the magnetic circuit, in particular in the armature, which ensures a stable state in one position over an extended time period.
- The apparatus also includes a restoring spring for acting on the armature, which restoring spring is capable of moving the armature without using electrical energy.
- In one end position of the armature the permanent magnetic force is advantageously greater than the force of the restoring spring, which ensures a stable position of the armature, and, in the other end position, the permanent magnetic force is smaller than the force of the restoring spring, so that the armature is firmly held in the other end position by the spring.
- The invention will become more readily apparent from the following description of an exemplary embodiment with reference to the accompanying drawings.
-
FIG. 1 is a partial sectional view of an apparatus which has an element for coupling two actuating elements of a valve drive of an internal combustion engine which act optionally on a gas exchange valve, wherein an electromagnet interacts with an armature, -
FIG. 2 is a sectional view of the apparatus, wherein the armature is in a first end position, and -
FIG. 3 is a sectional view of the apparatus, wherein the armature is in a second end position. - The invention resides in an apparatus for coupling and decoupling two actuating
elements elements switchable actuating levers -
FIG. 1 shows parts of the valve gear for actuating the at least one gas exchange valve 1 of the internal combustion engine having aninner lever 2 and anouter lever 3. Theinner lever 2 is mounted so as to be pivotable with its first end about ashaft 4, with theshaft 4 being supported on theouter lever 3 and, when locked, is supported with its second end on anelement 5 of the apparatus for coupling theinner lever 2 andouter lever 3. In the case of unlocking, theinner lever 2 acts on anidle travel spring 14. - The
outer lever 3 has for example twoarms 7 which are provided, for example, withcam surfaces 6 on which at least onecam 18 with a small stroke can act. Thearms 7 of theouter lever 3 surround theinner lever 2 which can be actuated by at least onecam 17 with a large stroke. Theouter lever 3 is supported at one end at least indirectly on acomponent 8 of the internal combustion engine, it being possible for thecomponent 8 to be a valve play-adjusting element, a housing part of the internal combustion engine or a bearing point. At the other end it acts on the gas exchange valve 1. - The system is therefore comprised of two levers, that is, the
outer lever 3, which is supported in the present case on the hydraulic valve play-adjustingelement 8 and acts on the valve stem la of the gas exchange valve 1 which is to be actuated, and theinner lever 2 which is mounted on theouter lever 3. - In order to be able to actuate the gas exchange valve 1 alternatively also by means of the
inner lever 2 or only by means of theouter lever 3 and thus to bring about different valve strokes, theelement 5 is provided. Theelement 5 can be acted on by an electromagnet 9 in alocking direction 12 and anunlocking direction 13, said electromagnet 9 being composed of a coil 9 a, a yoke 9 b and anarmature 10. Thearmature 10 is operatively connected to theelement 5, i.e. in the present exemplary embodiment thearmature 10 is connected to theelement 5. Aspring element 11 additionally acts on theelement 5 in thelocking direction 12. As a result, theelement 5 can be pushed in thelocking direction 12 by thespring element 11 and/or thearmature 10 of the electromagnet 9, and can be pushed in theunlocking direction 13 by thearmature 10 which acts as a restoring element. - In order to provide an apparatus for coupling and decoupling two actuating elements of a valve gear of an internal combustion engine which operates with a high level of operational reliability and significantly reduced electrical energy consumption, the invention proposes that the apparatus have a permanent
magnetic device 15 for acting on thearmature 10. In the present example, the permanentmagnetic device 15 is a component of thearmature 10, which is otherwise fabricated from nonpermanent magnetic material, or the permanent magnetic force is applied by thearmature 10 which has been magnetized by preceding energization. -
FIG. 2 shows theelement 5 of the apparatus in the locked position. The electromagnet 9 is switched to a deenergized setting, as a result of which thespring element 11 pushes thearmature 10 at least partially out of the electromagnet 9 in thelocking direction 12 until theelement 5 bears against astop 16 which is preferably provided on theouter lever 3. This position is stable without energization of the electromagnet 9 since the force of thespring element 11 is higher than the effect of the permanentmagnetic device 15 which is reduced owing to the large distance between thearmature 10 and the yoke 9 b. As a result, theinner lever 2 is connected in a positively locking fashion to theouter lever 3, i.e. thecam 17 generating a large stroke acts via theinner lever 2 on theouter lever 3 which then actuates the gas exchange valve 1, while thecam 18 generating the small stroke operates in idle. -
FIG. 3 shows theelement 5 of the apparatus in the unlocked position. In order to unlock the actuatingelements armature 10 is pulled into arecess 19 which is formed by the yoke 9 b. As a result, theelement 5 which is connected to thearmature 10 is pulled away from under theinner lever 2 by said armature against the force of thespring element 11. As a result, theinner lever 2 is deactivated, i.e. thecam 18 with a small stroke acts on theouter lever 3 which then actuates the gas exchange valve 1, with theinner lever 2, on which thecam 17 with a large stroke acts, merely carrying out an oscillating idle movement on theouter lever 3. - As already mentioned above, the
armature 10 is pulled into therecess 19 by brief energization of the electromagnet 9. Because of the small distance between thearmature 10 and therecess 19, the effect of the permanentmagnetic device 15 is greater than the force of thespring element 11, for which reason thearmature 10 also remains in this position without energization of the electromagnet 9, which results in significantly reduced consumption of electrical energy. - In order to bring about the locked position illustrated in
FIG. 2 , the electromagnet 9 is briefly energized with reversed polarity.
Claims (8)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005006056.0 | 2005-02-10 | ||
DE102005006056A DE102005006056A1 (en) | 2005-02-10 | 2005-02-10 | Device for coupling or decoupling two actuators of a valve train of an internal combustion engine and method thereof |
PCT/EP2006/000492 WO2006084557A1 (en) | 2005-02-10 | 2006-01-20 | Device for coupling or decoupling two actuating elements of a valve gear of an internal combustion engine and method therefor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/000492 Continuation-In-Part WO2006084557A1 (en) | 2005-02-10 | 2006-01-20 | Device for coupling or decoupling two actuating elements of a valve gear of an internal combustion engine and method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080006232A1 true US20080006232A1 (en) | 2008-01-10 |
Family
ID=36190472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/891,053 Abandoned US20080006232A1 (en) | 2005-02-10 | 2007-08-08 | Apparatus and method for coupling and decoupling actuating elements of a valve drive of an internal combustion engine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080006232A1 (en) |
JP (1) | JP2008530424A (en) |
DE (1) | DE102005006056A1 (en) |
WO (1) | WO2006084557A1 (en) |
Cited By (13)
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US20170241300A1 (en) * | 2014-08-18 | 2017-08-24 | Eaton Corporation | Valvetrain with rocker arm housing magnetically actuated latch |
DE102016208472A1 (en) | 2016-05-18 | 2017-11-23 | Schaeffler Technologies AG & Co. KG | Arrangement for the electromechanical actuation of at least one switchable drag lever for a valve train of an internal combustion engine |
EP3303782A4 (en) * | 2015-06-04 | 2019-01-23 | Eaton Corporation | Electrically latching rocker arm assembly having built-in obd functionality |
US10358951B2 (en) | 2015-08-18 | 2019-07-23 | Eaton Intelligent Power Limited | Sliding contact for electrically actuated rocker arm |
WO2019206461A1 (en) * | 2018-04-26 | 2019-10-31 | Eaton Intelligent Power Limited | Switch providing on-board diagnostic feedback for electromagnetically actuated latching rocker arm assembly |
US10480362B2 (en) | 2016-03-11 | 2019-11-19 | Eaton Intelligent Power Limited | Inductive coupling to rocker arm assemblies |
US10662825B2 (en) | 2016-10-17 | 2020-05-26 | Eaton Intelligent Power Limited | Control based on magnetic circuit feedback |
US10662826B2 (en) | 2016-10-17 | 2020-05-26 | Eaton Intelligent Power Limited | OBD based on magnetic circuit feedback |
US10731517B2 (en) | 2015-03-30 | 2020-08-04 | Eaton Intelligent Power Limited | Valvetrain with rocker arm housing magnetic latch |
US10731516B2 (en) | 2018-07-13 | 2020-08-04 | Eaton Intelligent Power Limited | Sliding spring contacts providing electrical power to rocker arms |
US10781726B2 (en) * | 2015-06-04 | 2020-09-22 | Eaton Intelligent Power Limited | Electrically latching rocker arm assembly having built-in OBD functionality |
US10900390B2 (en) * | 2017-07-05 | 2021-01-26 | Eaton Intelligent Power Limited | Harsh condition controls for electrically latched switching roller finger follower |
US11002156B2 (en) | 2015-08-18 | 2021-05-11 | Eaton Intelligent Power Limited | Non-contacting actuator for rocker arm assembly latches |
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Publication number | Priority date | Publication date | Assignee | Title |
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EP2050933A1 (en) * | 2007-10-17 | 2009-04-22 | Delphi Technologies, Inc. | Valve operating system comprising a two-step roller finger follower |
DE102008059207A1 (en) | 2008-11-27 | 2010-06-02 | Daimler Ag | Cam follower for actuating gas exchange valve in valve gear device of internal-combustion engine, has gripping element for gripping cam outline and another gripping element for gripping another cam outline |
EP2472075B1 (en) | 2009-08-24 | 2014-09-17 | Yamaha Hatsudoki Kabushiki Kaisha | Variable valve device, engine with same, and saddled vehicle |
FR2976617B1 (en) * | 2011-06-15 | 2015-06-19 | Valeo Sys Controle Moteur Sas | CONTROL OF AN INTERNAL COMBUSTION ENGINE |
FR2979945B1 (en) * | 2011-09-12 | 2016-05-06 | Valeo Systemes De Controle Moteur | SYSTEM FOR TRANSMITTING THE MOTION OF AT LEAST TWO CAMES TO AT LEAST ONE VALVE |
US20170236630A1 (en) * | 2014-08-18 | 2017-08-17 | Eaton Corporation | Magnetically Latching Flux-Shifting Electromechanical Actuator |
DE102017106689A1 (en) | 2017-03-29 | 2018-10-04 | Schaeffler Technologies AG & Co. KG | Variable valve train of a combustion piston engine |
DE102018102778B4 (en) * | 2018-02-08 | 2024-05-23 | Schaeffler Technologies AG & Co. KG | Switchable rocker arm |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6318318B1 (en) * | 2001-05-15 | 2001-11-20 | Ford Global Technologies, Inc. | Rocker arm assembly |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4314619A1 (en) * | 1993-05-04 | 1994-11-10 | Schaeffler Waelzlager Kg | Pestle |
US5544626A (en) * | 1995-03-09 | 1996-08-13 | Ford Motor Company | Finger follower rocker arm with engine valve deactivator |
DE19612551A1 (en) * | 1996-03-29 | 1997-10-02 | Schaeffler Waelzlager Kg | Valve train of an internal combustion engine that can be switched over to different strokes for at least one gas exchange valve |
US5655488A (en) * | 1996-07-22 | 1997-08-12 | Eaton Corporation | Dual event valve control system |
US5690066A (en) * | 1996-09-30 | 1997-11-25 | Eaton Corporation | Engine valve control actuator with knee action linkage |
DE19914044A1 (en) * | 1999-03-27 | 2000-09-28 | Schaeffler Waelzlager Ohg | Tappet built into cylinder head of engine valve drive, with axis led into elongated hole in bearing block on cylinder head |
JP2002364391A (en) * | 2001-06-08 | 2002-12-18 | Toyota Motor Corp | Neutral valve position variation detector for solenoid- driven valve |
DE10318295A1 (en) * | 2003-04-23 | 2004-11-11 | Ina-Schaeffler Kg | Drag lever of a valve train of an internal combustion engine |
DE202004012292U1 (en) * | 2004-08-05 | 2004-12-09 | Trw Automotive Gmbh | Electromagnetic servo drive, especially for operating combustion engine gas exchange valve, has electromagnetic device with two magnetic circuits, each with electromagnet(s) forming pole surfaces |
-
2005
- 2005-02-10 DE DE102005006056A patent/DE102005006056A1/en not_active Withdrawn
-
2006
- 2006-01-20 WO PCT/EP2006/000492 patent/WO2006084557A1/en not_active Application Discontinuation
- 2006-01-20 JP JP2007554459A patent/JP2008530424A/en not_active Abandoned
-
2007
- 2007-08-08 US US11/891,053 patent/US20080006232A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6318318B1 (en) * | 2001-05-15 | 2001-11-20 | Ford Global Technologies, Inc. | Rocker arm assembly |
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US10180089B2 (en) * | 2014-08-18 | 2019-01-15 | Eaton Intelligent Power Limited | Valvetrain with rocker arm housing magnetically actuated latch |
US20170241300A1 (en) * | 2014-08-18 | 2017-08-24 | Eaton Corporation | Valvetrain with rocker arm housing magnetically actuated latch |
US10731517B2 (en) | 2015-03-30 | 2020-08-04 | Eaton Intelligent Power Limited | Valvetrain with rocker arm housing magnetic latch |
US10781726B2 (en) * | 2015-06-04 | 2020-09-22 | Eaton Intelligent Power Limited | Electrically latching rocker arm assembly having built-in OBD functionality |
EP3303782A4 (en) * | 2015-06-04 | 2019-01-23 | Eaton Corporation | Electrically latching rocker arm assembly having built-in obd functionality |
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CN113565596A (en) * | 2015-06-04 | 2021-10-29 | 伊顿公司 | Electrical latch rocker arm assembly with built-in OBD function |
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US10480362B2 (en) | 2016-03-11 | 2019-11-19 | Eaton Intelligent Power Limited | Inductive coupling to rocker arm assemblies |
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US10900390B2 (en) * | 2017-07-05 | 2021-01-26 | Eaton Intelligent Power Limited | Harsh condition controls for electrically latched switching roller finger follower |
CN112074653A (en) * | 2018-04-26 | 2020-12-11 | 伊顿智能动力有限公司 | Switch providing on-board diagnostic feedback for an electromagnetically actuated latching rocker arm assembly |
WO2019206461A1 (en) * | 2018-04-26 | 2019-10-31 | Eaton Intelligent Power Limited | Switch providing on-board diagnostic feedback for electromagnetically actuated latching rocker arm assembly |
US11713698B2 (en) * | 2018-04-26 | 2023-08-01 | Eaton Intelligent Power Limited | Switch providing on-board diagnostic feedback for electromagnetically actuated latching rocker arm assembly |
US10731516B2 (en) | 2018-07-13 | 2020-08-04 | Eaton Intelligent Power Limited | Sliding spring contacts providing electrical power to rocker arms |
Also Published As
Publication number | Publication date |
---|---|
WO2006084557A1 (en) | 2006-08-17 |
JP2008530424A (en) | 2008-08-07 |
DE102005006056A1 (en) | 2006-08-24 |
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