EP2279343A1 - Magnetventil ohne restluftspaltscheibe - Google Patents
Magnetventil ohne restluftspaltscheibeInfo
- Publication number
- EP2279343A1 EP2279343A1 EP09730740A EP09730740A EP2279343A1 EP 2279343 A1 EP2279343 A1 EP 2279343A1 EP 09730740 A EP09730740 A EP 09730740A EP 09730740 A EP09730740 A EP 09730740A EP 2279343 A1 EP2279343 A1 EP 2279343A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- solenoid valve
- air gap
- residual air
- anchor plate
- 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
- 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
- F02M63/0024—Valves characterised by the valve actuating means electrical, e.g. using solenoid in combination with permanent magnet
-
- 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
-
- 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
- H01F7/081—Magnetic constructions
Definitions
- DE 196 50 865 Al relates to a solenoid valve for controlling the fuel pressure in a control chamber of an injection valve, such as a common rail injection system. About the fuel pressure in the control chamber, a stroke movement of a valve body is controlled with an injection port of the injection valve is opened or closed.
- the solenoid valve comprises an electromagnet, a movable armature and a valve member moved with the armature and acted upon by a valve closing spring in the closing direction and cooperating with the valve seat of the valve member to control the fuel output from the control chamber.
- Fuel injectors that are used on high-pressure accumulator injection systems may also have a two-piece anchor, which is also actuated by a solenoid valve.
- the armature exerts the closing force on a valve ball in each case in the currentless case of the solenoid valve.
- An armature guide which is bolted firmly in the injector body of the fuel injector, receives the anchor bolt.
- the anchor plate is guided, which in turn is attracted by the electromagnet.
- the anchor bolt can tilt due to the leadership game in the anchor guide.
- the anchor plate in turn can tilt on the anchor bolt, so that the total tilt of the assembly anchor bolt / anchor plate with respect to the injector main axis can be determined as the sum of the leadership games.
- a residual air gap between the armature plate and the lower end face of the solenoid coil is usually adjusted by inserting a residual air gap disc made of a non-magnetic material constituting a classified dial. Over the residual air gap gluing the anchor plate te be prevented at the energized solenoid to avoid a delayed response of the solenoid valve on the fuel injector.
- this residual air gap is adjusted via a projection or a step, which is preferably formed on a plan side of the armature plate opposite the magnet coils of the magnet valve.
- the advantage of the inventively proposed stroke stop via a shoulder in the armature is the fact that, as a result, the magnetic force generated by the magnetic coil of the solenoid valve experiences a slight increase.
- the current through the solenoid can be lowered and the boost time, the time during which an increased boost voltage is applied, be shortened.
- a lowered current results in a lower heat load of the solenoid and the controlling this control device. This in turn results in that the control unit can be carried out inexpensively according to the requirements required of this.
- the armature can be made smaller, which leads to a constructive size of the solenoid valve advantageously influencing smaller-sized anchor.
- a smaller mass of the armature in turn results in a lower seating load, a smaller armature surface leads to a lower hydraulic influence on the armature movement.
- the solution proposed according to the invention has the potential disadvantage that the armature remains "stuck" to the magnet in the upper position, since the distance between the shoulder on the armature, ie on its upper plan side and the magnetic pot, drops to zero
- the force build-up in the proposed solution is only slightly faster and the power reduction is slightly slower, so that by adjusting the control, the same switching times can be achieved.
- Magnet core assigns, machined in the radially inner region of a paragraph, which has exactly the height of the required residual air gap. If the magnet coil is now energized, the armature is attracted by the electromagnet. In the upper
- Stroke position of the armature which is determined by the in this ground paragraph, remains over the majority of the anchor top a residual air gap, so that the paragraph, for example, in the top plan side of the anchor plate of the armature assembly is ground or screwed, the function of the omitted residual air gap disc takes over.
- the paragraph is screwed or ground.
- the heel has exactly the height of the predetermined residual air gap, so that the previously used residual air gap disc, which adjusts this, can be omitted. If the magnetic coil embedded in the magnetic pot is now energized, the armature plate of the armature assembly is attracted by the magnetic coil. In the upper position of the armature plate of the armature assembly, which is predetermined by the shoulder, as seen in the radial direction over the top of the armature plate, the residual air gap.
- the radially inward position of the heel e.g. opposite to the inner pole of the magnetic pot, has the advantage of a smaller surface and thus a smaller influence on the hydraulic damping.
- FIG. 1 shows a schematic view of a solenoid valve
- Figure 1.1 is a representation of a greatly enlarged scale of the opposite in the inner pole of the magnetic pot plan side of the anchor plate with incorporated heel and
- Figure 2 is a comparison of the magnetic force, the voltage and the stroke of an armature each with residual air gap and - as proposed by the invention - with paragraph in the radially inner region.
- FIG. 1 shows a magnetic valve in a schematic arrangement.
- a solenoid valve 10 which in particular serves to actuate a fuel injector for injecting fuel into self-igniting internal combustion engines, comprises a magnet assembly 12.
- the magnet assembly 12 essentially comprises a magnet pot 14 or a magnet core 14, in which a magnet coil 16 is embedded.
- the magnetic coil 16 is energized via Kasticianspins not shown in Figure 1 and has an end face 18, which faces an anchor plate 24 of an armature assembly.
- the armature assembly comprises, in addition to the armature plate 24, an anchor bolt 22.
- the end face 18, which is opposite to the armature plate 24, is divided by the magnet coil 16 into an inner pole 30 and an outer pole 32.
- the magnet pot 14 of the armature assembly 12 includes a through hole 20 through which a tenon of the armature pin 22 of the armature assembly extends in the axial direction.
- the magnetic coil 16 is received in an embedding in the magnetic pot 14 and arranged so that it is as close as possible to the end face 18 of the magnet pot 14, which assigns the anchor plate 24, aligned. Both the anchor bolt 22 and the anchor plate 24 joined thereto as well as the magnet coil 16 and magnetic pot 14 are rotationally symmetrical. In the illustration according to FIG. 1.1, the area between the end face of the magnet pot and the armature plate opposite it is marked on an enlarged scale.
- Figure 1.1 shows that in this embodiment, the anchor plate 24 is joined to a joint 50 on the anchor bolt 22, for example via a press fit.
- the armature plate 24, which extends in the radial direction, has on its first front side 26 a shoulder 42 or an elevation 42, which lies opposite the inner pole 30 of the magnetic pot 14 or of the magnetic core 14 shown in FIG.
- the height above which a flat surface 46 of the shoulder 42 protrudes beyond the first end 26 of the anchor plate 24 defines a residual air gap 52. This is therefore defined by the height to which the flat surface 46 of the paragraph 42 and the survey 42 from the first end 26 protrudes.
- the residual air gap disc previously required for adjusting the residual air gap 52 is omitted, as can be seen from FIG. 1.1.
- FIG. 1.1 further shows that the flat surface 46 of the shoulder 42 has a first slope 44 and a second slope 48 to avoid a sharp-edged transition between the ends of the substantially annular shoulder 42 and the planar surface 26.
- first slope 44 and the second slope 48 and curves with a large radius could be provided. If the anchor plate 24 or the anchor assembly together with the anchor bolt 22 tilts, the formation of the bevels 44 and 48 avoids damage to the end face 18 of the magnet pot 14 of the magnet assembly 12 since sharp-edged transitions are missing. In addition to the possibility of damage and a deformation of the end face 18 of the magnet pot 14 and the magnetic core 14 is excluded.
- the armature plate 24 is attracted by the magnetic coil 16.
- the radially inner position of the shoulder 42 with respect to the first end face 26 of the anchor plate 24 has the further advantage of representing a small surface and thus exert a relatively small, if not negligible influence on the hydraulic damping.
- the armature assembly can be so strongly attenuated by the hydraulic damping, that the anchor plate 24 only no matter how strong strikes the front side 18 of the magnet pot 14 that neither the first plane side 26 of the armature plate 24 nor the end face 18 of the magnet pot 14 of the magnet assembly 12 undergo mechanical damage.
- the advantage is also achieved that the magnetic force is slightly increased. This allows a lowering of the current flowing through the solenoid coil 26 in absolute height and a shortening of the boost time during which an increased voltage level is applied, which contributes to the unwanted heating of the magnetic coil 16. By a lowered compared to previous applications power during energization of the solenoid 16 results in a lower heat load of the same and the associated control unit.
- Figure 2 shows a comparison of magnetic force curves, strokes and the Bestromungsschreib the magnetic coil 16 for an armature with residual air gap disk and - as inventively proposed - lying in the radially inner region of the end face of the anchor plate heel.
- FIG. 2 shows that, in the case of an armature with residual air gap disk, the magnetic force runs in accordance with the curve 60.
- the curve 60 - plotted over time - is characterized by a pronounced first maximum 62 at the end of a plateau 66 and by a relative maximum 64, which is less in absolute magnitude than the first maximum 62.
- the magnetic coil with energized a first voltage level 89.1 compare the course of the voltage (reference numeral 80).
- Reference numeral 80 denotes the waveform of the voltage applied to the solenoid valve 26 of the magnet assembly 12. This varies between a first voltage level 87.1, which after reaching the plateau 66 - read off in the course of the magnetic force - drops to a second voltage level 87.2. In this second voltage level 87.2, the voltage corresponding to the course 80 is again reduced, namely to the first voltage drop 82, during which a large decrease in the magnetic force occurs.
- the magnetic forces 60 and 70 are at the end of the voltage increase 86, which in turn is followed by a second voltage drop 84. During the second voltage drop, the magnetic forces 60 and 70 fall in accordance with the hysteresis of the magnetic coil 26 almost identical in relation to each other.
- Reference numeral 102 designates a rising edge, which occurs in the stroke course 100 for an anchor with a shoulder.
- reference numeral 92 designates a rising edge, which occurs in the stroke course 100 for an anchor with a shoulder.
- the rising edge of the stroke curve 90 for an armature with residual air gap is shown by reference numeral 92.
- Dies means that the voltage at the magnetic coil 16 of the magnet assembly 12, starting from the boost voltage level 87.1 to a lower voltage level, ie, a board voltage level 87.2, which corresponds to the second voltage level, can be lowered.
- the reduction takes place earlier in comparison to the reduction of a voltage curve in an armature with residual air gap disc, which is not shown here for illustrative reasons. Due to the faster power build-up when switching on with a self-adjusting magnetic force curve 70 for an anchor with heel, the current through the magnetic coil 16 can be switched off sooner in this solution. As a result, a slower power reduction can be compensated, so that the switching time of the armature corresponding to the magnetic force curve 70 for an anchor with heel is approximately the same.
- the magnet assembly 12 can be manufactured more cost-effectively with the same function as with an armature with residual air gap disk.
- the erfmdungs proposed solution has the potential disadvantage that the anchor plate 24 in the upper position on the magnetic pot 14 "stick" remains, since the distance between the shoulder 42 on the first end face 26 of the anchor plate 24 and the end face 18 of the magnet pot 14 to zero
- the force build-up in the proposed solution is slightly faster, ie the armature plate 24 of the armature assembly reaches its maximum position earlier - opposite the end face 18 of the magnet pot 14 when the magnet coil 26 is energized, whereas the force reduction is slightly slower.
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)
- Power Engineering (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008001122A DE102008001122A1 (de) | 2008-04-10 | 2008-04-10 | Magnetventil ohne Restluftspaltscheibe |
| PCT/EP2009/051243 WO2009124789A1 (de) | 2008-04-10 | 2009-02-04 | Magnetventil ohne restluftspaltscheibe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2279343A1 true EP2279343A1 (de) | 2011-02-02 |
| EP2279343B1 EP2279343B1 (de) | 2012-02-01 |
Family
ID=40637070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09730740A Not-in-force EP2279343B1 (de) | 2008-04-10 | 2009-02-04 | Magnetventil ohne restluftspaltscheibe |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20110049406A1 (de) |
| EP (1) | EP2279343B1 (de) |
| CN (1) | CN101990598A (de) |
| AT (1) | ATE544000T1 (de) |
| DE (1) | DE102008001122A1 (de) |
| ES (1) | ES2377710T3 (de) |
| WO (1) | WO2009124789A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474338A (zh) * | 2015-10-19 | 2018-08-31 | 德尔福知识产权有限公司 | 用于高压燃料泵的数字式入口阀 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2953268B1 (fr) * | 2009-12-02 | 2012-04-06 | Bosch Gmbh Robert | Soupape electromagnetique de commande d'un injecteur ou de regulation de pression d'un accumulateur de carburant a haute pression |
| KR20120109122A (ko) * | 2011-03-28 | 2012-10-08 | 주식회사 만도 | 브레이크 시스템용 솔레노이드 밸브 |
| US9206921B1 (en) * | 2013-01-02 | 2015-12-08 | Jansen's Aircraft Systems Controls, Inc. | Sealed solenoid and solenoid valve |
| DE102015212130A1 (de) | 2015-06-30 | 2017-01-05 | Robert Bosch Gmbh | Magnetbaugruppe und Kraftstoffinjektor mit einer Magnetbaugruppe |
| CN110617357B (zh) * | 2019-09-03 | 2025-01-03 | 海力达汽车科技有限公司 | 一种能够提高控制精度的电磁阀 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19523915A1 (de) * | 1995-06-30 | 1997-01-02 | Bosch Gmbh Robert | Mikroventil und Verfahren zur Herstellung eines Mikroventils |
| US5785298A (en) * | 1996-04-15 | 1998-07-28 | Teknocraft, Inc. | Proportional solenoid-controlled fluid valve assembly |
| DE19650865A1 (de) | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Magnetventil |
| DE19832826C2 (de) * | 1998-07-21 | 2000-08-17 | Bosch Gmbh Robert | Montageverfahren für Kraftstoff-Einspritzventil und Vorsteuerventil sowie Kraftstoff-Einspritzventil |
| JP2000274548A (ja) * | 1999-03-24 | 2000-10-03 | Bosch Automotive Systems Corp | ディスク型電磁弁および電磁式燃料噴射弁 |
| DE10131199A1 (de) * | 2001-06-28 | 2003-01-16 | Bosch Gmbh Robert | Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine |
| JP4082929B2 (ja) * | 2002-05-21 | 2008-04-30 | 株式会社日立製作所 | 燃料噴射弁 |
| JP4168448B2 (ja) * | 2004-07-08 | 2008-10-22 | 株式会社デンソー | 燃料噴射弁 |
| DE102006020689A1 (de) * | 2006-05-04 | 2007-11-08 | Robert Bosch Gmbh | Magnetventil mit stoffschlüssiger Ankerverbindung |
| DE102006021735A1 (de) * | 2006-05-10 | 2007-11-15 | Robert Bosch Gmbh | Magnetventil mit geflutetem Ankerraum |
-
2008
- 2008-04-10 DE DE102008001122A patent/DE102008001122A1/de not_active Withdrawn
-
2009
- 2009-02-04 US US12/937,090 patent/US20110049406A1/en not_active Abandoned
- 2009-02-04 AT AT09730740T patent/ATE544000T1/de active
- 2009-02-04 ES ES09730740T patent/ES2377710T3/es active Active
- 2009-02-04 CN CN200980112261XA patent/CN101990598A/zh active Pending
- 2009-02-04 EP EP09730740A patent/EP2279343B1/de not_active Not-in-force
- 2009-02-04 WO PCT/EP2009/051243 patent/WO2009124789A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009124789A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474338A (zh) * | 2015-10-19 | 2018-08-31 | 德尔福知识产权有限公司 | 用于高压燃料泵的数字式入口阀 |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2377710T3 (es) | 2012-03-30 |
| ATE544000T1 (de) | 2012-02-15 |
| CN101990598A (zh) | 2011-03-23 |
| EP2279343B1 (de) | 2012-02-01 |
| DE102008001122A1 (de) | 2009-10-15 |
| WO2009124789A1 (de) | 2009-10-15 |
| US20110049406A1 (en) | 2011-03-03 |
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