EP1913605A1 - Electromagnetic actuating appratus - Google Patents
Electromagnetic actuating appratusInfo
- Publication number
- EP1913605A1 EP1913605A1 EP07786507A EP07786507A EP1913605A1 EP 1913605 A1 EP1913605 A1 EP 1913605A1 EP 07786507 A EP07786507 A EP 07786507A EP 07786507 A EP07786507 A EP 07786507A EP 1913605 A1 EP1913605 A1 EP 1913605A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yoke
- stationary
- core region
- actuator
- recess
- 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.)
- Granted
Links
- 239000010687 lubricating oil Substances 0.000 claims abstract description 6
- 239000000314 lubricant Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 2
- 230000007423 decrease Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 11
- 230000002829 reductive effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- H01F7/1638—Armatures not entering the winding
- H01F7/1646—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
- F01L1/34—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
- 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
- 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
- F01L13/0031—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 by modification of tappet or pushrod length
-
- 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
- F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control 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
- F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/3443—Solenoid driven oil control 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
- 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
- F01L2013/0052—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 with cams provided on an axially slidable sleeve
-
- 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
- H01F2007/163—Armatures entering the winding with axial bearing
Definitions
- the present invention relates to an electromagnetic actuator according to the preamble of the main claim.
- Such a device is well known, for example in the form of adjusting devices with electro-magnets and is used for a variety of purposes.
- the basic principle is that a piston (as adjusting element), which has an engagement region for the intended setting task, is guided in a housing as an armature between a stationary core region and a bearing element acting as a yoke and actuated by means of an electromagnet provided approximately in the core region can.
- FIG. 5 illustrates the state-of-the-art technology of the Applicant.
- a lubricated electromagnetic adjusting device is surrounded by a hollow-cylindrical sleeve element 10.
- An elongate piston rod (plunger) 12 and end-side permanent magnet assembly 14 are movably interposed a stationary core region 18 and a sleeve-shaped and as a storage for the actuator 16 serving yoke element 20 out, wherein the bearing element 20 sealingly in a correspondingly measured hollow cylindrical recess 22 of a support 24, such as an engine block section, is guided.
- FIG. 5 illustrates a supply / discharge channel 26 for liquid lubricating oil, which via a supply / discharge channel 28 in the bearing sleeve 20 in the limited by bearing sleeve 20 and core member 18 and sleeve member 10 movement space for the permanent magnet portion 14 of the actuating element 12 can be directed.
- the oil shown in black collects in the bottom area of the chamber thus formed.
- Activation of a coil unit (not shown in the figures) at the core area 18 then results in a repulsive force on the permanent magnet means 14 (more specifically, a pair of permanent magnetic disks connected by a soft magnetic iron disk fixed end to the cylinder rod 12) to a repulsive effect , whereupon then the actuator is driven out of the arrangement right in the figure view and an end-side engagement portion 30 of the actuating element a corresponding cooperating control partner, in the described embodiment, a camshaft Hubum- circuit operated.
- the permanent magnet section 14 of the actuating element must displace the lubricant collected in the lowermost base region when moving in the direction of the bearing element 20 (as a yoke), which, depending on the viscosity of the lubricant, to a slowdown or reduction of the achievable movement (and thus switching) speed of the unit leads.
- Object of the present invention is therefore to improve the dynamic properties of a generic electromagnetic actuator, in particular to shorten the response and control time, namely the period of time passes between activating the coil means and reaching an end stop for the actuating element operated thereby (as Anchor) .
- the object is solved by the electromagnetic actuator with the feature of the main claim and by the electromagnetic actuator according to the optionally recited claims 8 and 10; advantageous developments of the invention are described in the subclaims.
- the invention provides that a core-side contact region between a (typically planar) end face of the actuating element and a directly opposite, with this an end stop forming and also planing outer or end face of the core so by providing a recess or notch is modified that a forming in the battered end position and an adhesive effect causing lubricant film can be easily solved and loses its (for the dynamic behavior of the device disadvantageous) adhesive effect.
- the invention further provides for the adjusting element to be modified along a predetermined cylindrical jacket section by providing a flat-annular groove-shaped recess and / or by at least one jacket-side longitudinal groove such that a sliding surface between the adjusting element and a negative dynamic adhesion effect the surrounding bearing element is reduced. More precisely, according to the invention, this depression is to be realized axially deep in such a way that on the one hand a mechanically strong, load-bearing guide is ensured by the bearing element, on the other hand the gap formed by the depression is sufficiently large that an adhesive lubricant film does not arise or only with a reduced adhesive effect.
- a favorable mechanical development of the invention provides that, based on an outer diameter of the hollow cylindrical sleeve element provided for further development, the hollow cylindrical recess receiving the arrangement (eg in the engine block) has at least such a width that the sleeve element is aligned with this width.
- Geometric-constructive can then be achieved with this measure, that an inlet / outlet channel formed in the support in the extension of the inlet / outlet channel for lubricant in the yoke section edge or bottom side is arranged in the sleeve element and thus no bottom collecting space for lubricating oil remains in the range of motion of the permanent magnet means.
- Fig. 1 is a side sectional view of the electromagnetic actuator according to a first preferred embodiment of the invention
- FIG. 2 shows an enlarged detail view of the detail A according to FIG. 1;
- FIG. 3 shows an enlarged partial view of the detail B according to FIG. 1;
- FIG. 4 shows an enlarged partial view of the section C according to FIG. 1;
- FIG. 5 shows a lateral sectional view analogous to FIG. 1 of the technology used as generic, in-house state of the art planar technology, which offers the starting position for the present invention
- FIG. 8 shows various cross-sectional views of a hole, recess or opening provided in the yoke section for realizing the invention
- FIG. 11 shows a perspective view and two bottom-side views of the yoke element as a guide tube for the plunger element with two or four inlet and outlet channels arranged in the circumferential direction and displaced at the edges;
- FIG. 12 is a view analogous to FIG. 1 for illustrating a variant of the invention, according to which, by means of a suitable edge-side provision of an inlet or
- the electromagnetic actuator also reversed (on the head) can be operated and a bottom-side lubricant collection can be done beyond the core;
- FIG. 15 shows views of a tappet (cylindrical element) with longitudinal grooves provided on the shell side, in addition to the centrally provided recess, for guiding the lubricant.
- FIG. 15 shows views of a tappet (cylindrical element) with longitudinal grooves provided on the shell side, in addition to the centrally provided recess, for guiding the lubricant.
- FIG. 1 shows the realization of the electromagnetic actuator according to a first preferred embodiment.
- FIG. 1 analogous to the illustration of FIG. 5, shows a comparable mounting and tilting angle. Position, and corresponding components have identical reference numerals.
- the section 44 of the bearing sleeve element 20 which is directed towards the core and has a yoke section has an inlet / outlet channel 46, which is aligned with the channel 42 and displaced radially as far as possible at the edge. 1, to the edge in the direction of the surrounding sleeve element 10 only one wall 48 of minimized wall thickness has. This then advantageously leads to the fact that, cf. 5, an Olansammlung in the region of the transition between the sleeve and yoke element can be effectively prevented, and therefore advantageously the dynamic properties of the moving armature are increased.
- the drainage channel 46 in the form of a bore (shown in addition, see section A, a recess shown in the direction of the cylinder rod 12) repeatedly and distributed around the circumference of the yoke portion 44 around, so that, depending on the mounting position, always a simple and complete emptying of the movement space for the permanent magnet 14 is made possible.
- the number of bores implementing the channel 46 can be vary between 1 and 4 or more, see also the views of the yoke element 20 of FIG. 9 to 11.
- the detail B illustrates, as in the (plane) front side the core section 18 is formed a slot arrangement 50 running transversely (ie perpendicular to the plane of the drawing), which slot extends transversely beyond the effective width of the cylinder rod 12.
- a slot arrangement 50 running transversely (ie perpendicular to the plane of the drawing), which slot extends transversely beyond the effective width of the cylinder rod 12.
- FIG. 13 shows such a shell-side recess in the detail view.
- the reduced diameter of the annular groove 52 would be about 4 mm, so take place a circumferential recess of 0.5 mm;
- the present example describes a stroke of the device of 4 mm.
- lubricant such as engine oil
- the free rotation 52 would advantageously ensure that, for example in the case of a warm aggregate, the lubricant expands to a large extent and can collect in the cavity of the free rotation; when activated by low temperatures must be displaced correspondingly less lubricant, and the movement of the remaining lubricant takes place when this is thin again by heating.
- the plunger (especially in its areas outside the annular groove 52) each have four circumferentially distributed longitudinal grooves 56, the front - described effect - lubricant can run off almost completely with warm aggregate and accordingly the displacement expenditure is reduced with renewed cold activation - continue; the longitudinal grooves 56 are correspondingly advantageous for the fact that hardly any tough lubricant in the armature space or in the region of the plunger is when activating a cold unit.
- Fig. 12 shows - in a modification of the arrangement shown in FIG. 1 - a reverse positioning of the unit.
- this embodiment provides, for example by suitable lateral provision of a flow channel outside of the core 18, that the lubricant in the bottom area and thus outside of the armature space or in the position shown in FIG. 12 inverted relative to the position of FIG can collect beyond the core area 18. This also advantageously achieves the dynamic improvement intended according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnets (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202006011907 | 2006-08-03 | ||
PCT/EP2007/006828 WO2008014996A1 (en) | 2006-08-03 | 2007-08-02 | Electromagnetic actuating apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1913605A1 true EP1913605A1 (en) | 2008-04-23 |
EP1913605B1 EP1913605B1 (en) | 2011-10-26 |
Family
ID=38596793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07786507A Active EP1913605B1 (en) | 2006-08-03 | 2007-08-02 | Electromagnetic actuating appratus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1913605B1 (en) |
AT (1) | ATE531054T1 (en) |
WO (1) | WO2008014996A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011001412U1 (en) | 2011-01-12 | 2012-04-17 | Eto Magnetic Gmbh | Electromagnetic actuator and camshaft adjuster |
DE102011051268B4 (en) | 2011-06-22 | 2014-03-06 | Eto Magnetic Gmbh | Electromagnetic actuator and camshaft adjuster |
DE102017115975A1 (en) | 2016-08-01 | 2018-02-01 | Denso Corporation | Electromagnetic actuator |
DE102016116776A1 (en) | 2016-09-07 | 2018-03-08 | Kendrion (Villingen) Gmbh | Electromagnetic actuator, in particular for adjusting camshafts of an internal combustion engine |
DE102016116777A1 (en) | 2016-09-07 | 2018-03-08 | Kendrion (Villingen) Gmbh | Electromagnetic actuator, in particular for adjusting camshafts of an internal combustion engine |
DE102017107403A1 (en) | 2017-04-06 | 2018-10-11 | Kendrion (Villingen) Gmbh | Electromagnetic actuator, in particular for adjusting camshafts of an internal combustion engine |
DE102017119001A1 (en) | 2017-08-21 | 2019-02-21 | Kendrion (Villingen) Gmbh | Electromagnetic actuator |
DE102017121723B4 (en) | 2017-09-19 | 2021-07-01 | Kendrion (Villingen) Gmbh | Electromagnetic adjusting device, in particular for adjusting camshafts of an internal combustion engine |
DE102020109117A1 (en) | 2020-04-01 | 2021-10-07 | Eto Magnetic Gmbh | Adhesion-optimized armature assembly and electromagnetic actuating device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3601554B2 (en) | 1995-08-11 | 2004-12-15 | アイシン・エィ・ダブリュ株式会社 | Solenoid pressure regulator |
JP2001074158A (en) | 1999-09-02 | 2001-03-23 | Ebara Corp | Solenoid and fluid control valve |
DE10119291A1 (en) | 2001-04-20 | 2002-10-24 | Conti Temic Microelectronic | Actuator for electromagnetic valve control has surface structure machined into anchor plate and/or yokes of magnet |
DE20114466U1 (en) * | 2001-09-01 | 2002-01-03 | Eto Magnetic Kg | Electromagnetic actuator |
DE10345946A1 (en) | 2003-10-02 | 2005-04-21 | Bosch Gmbh Robert | Valve for controlling a gas flow, comprises lubricant chamber which borders on a guide gap between valve housing and magnetic armature |
-
2007
- 2007-08-02 EP EP07786507A patent/EP1913605B1/en active Active
- 2007-08-02 WO PCT/EP2007/006828 patent/WO2008014996A1/en active Application Filing
- 2007-08-02 AT AT07786507T patent/ATE531054T1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2008014996A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008014996A1 (en) | 2008-02-07 |
ATE531054T1 (en) | 2011-11-15 |
EP1913605B1 (en) | 2011-10-26 |
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