EP2201238A1 - Streuflussreduzierter anker - Google Patents
Streuflussreduzierter ankerInfo
- Publication number
- EP2201238A1 EP2201238A1 EP08804320A EP08804320A EP2201238A1 EP 2201238 A1 EP2201238 A1 EP 2201238A1 EP 08804320 A EP08804320 A EP 08804320A EP 08804320 A EP08804320 A EP 08804320A EP 2201238 A1 EP2201238 A1 EP 2201238A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- solenoid valve
- valve assembly
- anchor
- assembly
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
- F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/08—Fuel-injection apparatus having special means for influencing magnetic flux, e.g. for shielding or guiding magnetic flux
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
Definitions
- the armature of a solenoid valve is designed as a two-part armature so as to reduce the moving mass of the unit of armature and valve member and thus a bouncing kinetic energy.
- the spring biased during the upward movement of the anchor bolt ensures that the closing element is returned to its original position. This is independent of whether a pressure-compensated or a pressure-dependent biased valve is actuated by means of the closing element.
- a magnet assembly comprises a magnetic coil, a magnetic core and an armature, be it one or more parts.
- a high-pressure control unit for a solenoid valve according to DE 196 50 865 A1 comprises a magnet group, an armature group and a valve group.
- the solenoid valve assemblies used to actuate the fuel injectors include in addition to the armature assembly, the one or more parts may be formed, a magnetic core, in which a magnetic coil is embedded with a number of turns.
- the magnetic core with embedded coil is enclosed by a magnetic sleeve, which is usually made of a paramagnetic material such as X8CrNil8-9. This paramagnetic material represents a significant cost factor in previously used solenoid valve assemblies.
- Solenoid valve assemblies which are controlled by means of an electromagnet, have very short switching times.
- the switching time at switch-on is composed of a delay in response, at which the energization begins, until the beginning of the armature movement and the stroke time, i. the beginning of the anchor movement until the end of the anchor movement and reaching the anchor stop.
- the switching time is in addition to the control by the control unit still determined by the magnetic material, in particular its specific electrical conductivity and by the magnetic circuit geometry.
- a slotting of the armature or Ankerausklinkonne be made as geometric measures. Notches represent a removal of flux-carrying anchor volume for eddy current reduction, as well as slots prevent eddy current circulation in the armature and represent the state of the art to achieve short switching times.
- the invention has for its object to minimize stray flux formation on anchor assemblies in order to shorten switching times of solenoid valves.
- the leakage flux reduced anchor geometry proposed according to the invention is characterized in that the armature comprises a continuous armature disk without slots and notches, a web remaining.
- the underside of a pole face (plan side) of the anchor plate has, for example, grooves arranged at an angle of 60 °. These grooves run, for example, in a 60 ° division along the circumference of the anchor plate on the underside, i. on the pole face of the anchor plate facing away from the anchor plate.
- the grooves which are executable instead of a 60 ° graduation in a different graduation on the underside of the anchor plate, however, also have solid material towards the pole face, i. the pole face itself is not interrupted by the grooves, so that forms a closed pole face.
- four or eight grooves - but then in different circumferential pitch - can also be placed on the pole face, i.
- the anchor plate according to the present invention no longer has a radial slot, which was previously implemented as an eddy current reducing measure.
- the inventively proposed anchor plate has a homogeneous pole surface. When current is applied, which is arranged above the pole face of the inventively proposed armature assembly magnet coil, the magnetic flux penetrates via the planar pole face in the armature assembly, so that a stray flux formation is reduced.
- An additional field diffusion, which generally sets on the anchor plate underside, is attenuated or ideally completely suppressed. This results in a low flux density in the armature shaft, i. a neck-shaped approach below the anchor plate in the anchor bolt and the circlip at the time of the Anschverzugs a.
- the solution according to the invention can be used both on self-igniting internal combustion engines as well as on spark-ignited internal combustion engines, such as, for example, direct-injection internal combustion engines.
- FIG. 1 shows a perspective view of a cut-away magnetic assembly
- Figure 2 is an enlarged perspective view of the adjusting magnetic flux
- Figure 3 shows an embodiment of the stray flux reduced armature geometry.
- FIG. 1 shows a perspective view of a magnet assembly.
- FIG. 1 shows that a magnet assembly 10 comprises a magnet holder 12, which is provided with an annular groove 14 on its outer peripheral surface. In this annular groove, an O-ring is inserted during assembly of the magnet holder 12, with which the magnet holder 12 is sealed during assembly against the injector body of a fuel injector.
- a magnetic core 16 is accommodated, which encloses a magnetic coil 18.
- the magnetic coil 18 within the magnetic core 16 cooperates with an armature assembly 20 comprising an anchor bolt 26 and an anchor plate 28.
- the anchor bolt 26 and the armature plate 28 are connected to one another via a securing disk 22, which is additionally enclosed by a securing sleeve 24.
- Figure 2 shows the magnet assembly 10 as shown in Figure 1 with respect to the adjusting magnetic flux.
- a magnetic flux 42 is established by the magnetic core 16 of the magnet assembly. This runs around the magnetic coil 18 around, compare reference numeral 42 in Figure 2. However, a large part of the magnetic flux 42 passes through the eddy current reducing radial slot 40, see position 44 in Figure 2.
- Figure 2 can also be seen that at the bottom 36th the armature plate 28 sets the field diffusion, which provides no contribution to the magnetic force generation in the axial direction.
- stray flux 26 including the armature shaft 52 during the response delay
- stray flux 46 in FIG. 2 within the core bore 30.
- the cause of the losses of the magnetic flux through the slot see position 44 according to FIG. 2 and the stray flux 46 which is established in the core bore 30 of the magnetic core 12, can be seen in stray flux formations which cause a significant extension of the response delay.
- delay is to be understood as meaning the time span which elapses between the beginning of the energization of the magnet coil 18 until the start of the movement of the armature assembly 20.
- FIG. 3 shows this in relation to an armature assembly which has a stray-flux-reduced armature geometry.
- the armature assembly 20 shown there comprises an armature, for example formed in one piece, in which the armature pin 26 and the armature plate 28 constitute a single component.
- a pole surface 54 of the armature assembly 20 proposed according to the invention is substantially planar.
- the pole face 54 of the anchor plate 28 is circular and symmetrical to the axis 60 executed.
- the top, i. the pole surface 54 of the armature plate 28 of the armature assembly 20 is flat and has no interruption in the form of a radial slot 40 for eddy current reduction, are located on the opposite side of the pole surface 54 anchor plate 28 groove-shaped recesses 56.
- the groove-shaped recesses 56 at the bottom of Anchor plate 28 are formed so that between the bottom of a, for example, rectangular groove-shaped groove and the pole face 54 of the anchor plate 28, a web thickness 58 remains of a few tenths of millimeters. Due to this circumstance, the pole face 54 can be designed flat and not interrupted.
- FIG. 3 From the illustration according to FIG. 3 it can be seen that, for example, six at an angle of 60 °, compare at the underside of the armature plate 28 of the armature assembly 20 Position 62 in Figure 3 in the radial direction 64 extending grooves 56 are located. From Figure 3 it can be seen that in the embodiment shown there of the grooves 56, these have a rectangular groove bottom. The groove bottom could also be rounded or procured in a different geometry according to the tool used. 3 likewise shows a plan view of the pole face 54 of the anchor plate 28 of the anchor assembly 20 proposed according to the invention, that the pole face 54 has no discontinuity in the form of a radial slot 40 extending in the radial direction, but is closed.
- the groove-shaped recesses 56 shown in dashed lines in the plan view according to FIG. 3, all run on the underside of the anchor plate 28, ie on the side of the anchor plate 28 facing away from the pole face 54.
- the armature assembly 20 includes the inventively proposed Streufiussredu preparede armature geometry 50, according to the anchor plate 28 without slots or notches, however, with remaining web thickness 58 between the bottom of the grooves 56 and the Polfiambae 54 of the armature plate 28.
- the armature assembly 20 When turning on the magnetic core 16 of the magnet assembly 10 penetrates the adjusting magnetic flux 42 enters the armature assembly 20 via the flat-shaped pole face 54. Due to the absence of the radial slot 40, a reduced stray flux occurs, so that the proportion of the magnetic flux 42, which is generated to generate the magnetic force, increases.
- An additional field diffusion which usually sets at the anchor base, ie at the bottom of the anchor plate 28 is attenuated or ideally completely suppressed.
- the grooves 56 are formed in a 60 ° division 62 on the underside of the anchor plate 28 and extend essentially in the radial direction 64 with respect to the axis 60, the anchor plate 28 can be provided on the underside 36 also a different number of grooves 56 are executed, which then run, for example, in a 90 ° -partition and a 45 ° -partition.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
- Dowels (AREA)
- Joining Of Building Structures In Genera (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007049974A DE102007049974A1 (de) | 2007-10-18 | 2007-10-18 | Streuflussreduzierter Anker |
| PCT/EP2008/062369 WO2009053175A1 (de) | 2007-10-18 | 2008-09-17 | Streuflussreduzierter anker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2201238A1 true EP2201238A1 (de) | 2010-06-30 |
| EP2201238B1 EP2201238B1 (de) | 2011-01-26 |
Family
ID=40223764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08804320A Active EP2201238B1 (de) | 2007-10-18 | 2008-09-17 | Streuflussreduzierter anker |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2201238B1 (de) |
| CN (1) | CN101828027B (de) |
| AT (1) | ATE497100T1 (de) |
| DE (2) | DE102007049974A1 (de) |
| WO (1) | WO2009053175A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6036460A (en) * | 1998-06-29 | 2000-03-14 | Diesel Technology Company | Flexible armature for fuel injection system control valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH492124A (de) * | 1968-06-11 | 1970-06-15 | Sopromi Soc Proc Modern Inject | Elektromagnetisch betätigtes Einspritzventil |
| US5207410A (en) * | 1992-06-03 | 1993-05-04 | Siemens Automotive L.P. | Means for improving the opening response of a solenoid operated fuel valve |
| US5488340A (en) * | 1994-05-20 | 1996-01-30 | Caterpillar Inc. | Hard magnetic valve actuator adapted for a fuel injector |
| DE19650865A1 (de) | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Magnetventil |
| DE19708104A1 (de) | 1997-02-28 | 1998-09-03 | Bosch Gmbh Robert | Magnetventil |
| DE102004032229B3 (de) * | 2004-07-02 | 2006-01-05 | Compact Dynamics Gmbh | Brennstoff-Einspritzventil |
-
2007
- 2007-10-18 DE DE102007049974A patent/DE102007049974A1/de not_active Withdrawn
-
2008
- 2008-09-17 EP EP08804320A patent/EP2201238B1/de active Active
- 2008-09-17 CN CN200880111889.3A patent/CN101828027B/zh active Active
- 2008-09-17 WO PCT/EP2008/062369 patent/WO2009053175A1/de not_active Ceased
- 2008-09-17 AT AT08804320T patent/ATE497100T1/de active
- 2008-09-17 DE DE502008002513T patent/DE502008002513D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009053175A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2201238B1 (de) | 2011-01-26 |
| WO2009053175A1 (de) | 2009-04-30 |
| DE102007049974A1 (de) | 2009-04-23 |
| DE502008002513D1 (de) | 2011-03-10 |
| ATE497100T1 (de) | 2011-02-15 |
| CN101828027A (zh) | 2010-09-08 |
| CN101828027B (zh) | 2013-01-02 |
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