EP2409308A1 - Restluftspaltscheibe - Google Patents
RestluftspaltscheibeInfo
- Publication number
- EP2409308A1 EP2409308A1 EP10703242A EP10703242A EP2409308A1 EP 2409308 A1 EP2409308 A1 EP 2409308A1 EP 10703242 A EP10703242 A EP 10703242A EP 10703242 A EP10703242 A EP 10703242A EP 2409308 A1 EP2409308 A1 EP 2409308A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- residual air
- air gap
- magnetic
- magnetic core
- magnet 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
-
- 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
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M2200/07—Fuel-injection apparatus having means for avoiding sticking of valve or armature, e.g. preventing hydraulic or magnetic sticking of parts
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
- F02M2200/9069—Non-magnetic metals
-
- 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
- H01F2007/1661—Electromagnets or actuators with anti-stick disc
-
- 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
- H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
Definitions
- DE 196 50 865 A1 describes a solenoid valve for controlling the fuel pressure in a control chamber of an injection valve, e.g. a common rail high pressure accumulator injection system. About the fuel pressure in the control chamber, a lifting movement of a valve piston is controlled, with which an injection port of the injection valve can be opened or closed.
- the solenoid valve comprises an electromagnet, a movable armature and a valve member which is moved with the armature and acted upon by a valve closing spring in the closing direction and which cooperates with the valve seat of the magnet valve and thus controls the fuel drain from the control chamber.
- the swing occurring during operation of the armature and / or bouncing of the valve member has a disadvantageous effect.
- the armature of the magnetic valve is designed as a two-part magnet armature, so as to move the mass of the
- the two-piece armature includes an anchor bolt and an armature plate slidably received on the armature bolt against the force of a return spring in the closing direction of the valve member under the action of its inertial mass. This is secured by means of a locking washer and a surrounding locking sleeve on the anchor bolt.
- Additional damping devices are used, including one moving with the anchor plate and one fixed part.
- the movable with the anchor plate part comprises a fixed part facing the approach to a
- the other part of the damping device is formed on a stationary part of the solenoid valve as an overstroke.
- the overstroke stop can be formed by an end face of a bolt which guides the anchor bolt, is fixedly arranged in the solenoid valve, or by a part which is disposed in front of the slider, for example a disk.
- the residual air gap is adjusted by means of a residual air gap disc made of non-magnetic metal foil.
- the residual air gap disc made of non-magnetic metal foil is placed on the magnet armature during assembly of the armature assembly and held down by a spring plate with the solenoid valve spring. This ensures that the thin metal foil, which represents the residual air gap disc, always assumes a defined position or follows the movement of the armature.
- a compromise must always be made between the strength or stability and the hydraulic requirements. Since the residual air gap disk is fixed in the center of the armature, a connection to the magnetic inner pole is to be established, which extends over the spring space.
- the present invention has for its object to provide a residual air gap disc that can be used on solenoid valves, without the outflow of the return amount is hindered.
- the geometry of e.g. made of non-magnetic metal foil manufacturable residual air gap significantly simplified.
- This is according to the invention no longer, as in previous embodiments, fixed on the spring plate on the anchor. This results in a simplification of the assembly process.
- the inventively proposed residual air gap disc no longer covers, not even partially, the spring chamber and thus does not hinder the flow of the tax or the leakage amount in the direction of the low-pressure side return.
- the cross section of the return geometry in the armature and in the magnet is independent of the position of the residual air gap disk.
- the residual air gap disk proposed according to the invention is designed as a simple disk with a slit serving to avoid deformations.
- a plurality of radial slots may be formed with a slot length which is smaller than the width of the annular-shaped residual air gap disc.
- the inventively proposed residual air gap disc is inserted between the magnetic core and the magnet sleeve and fixed by the magnetic core.
- the inner diameter of the inventively proposed residual air gap disc is chosen to be as large as possible, so that the inner pole of the magnetic coil, which is embedded in the magnetic core, is not covered, whereas the outer pole of the magnetic core is covered by the annularly shaped residual air gap disc.
- the inventively proposed residual air gap disk can be very easily inserted in the assembly of the armature assembly between the magnetic core and an annular extending grip on the underside of the magnet sleeve and fixed very easy and captive during assembly.
- FIG. 1 shows the annular-shaped residual air gap disk arranged between magnetic core and magnetic sleeve
- Figure 2 shows a first embodiment of the inventively proposed residual air gap disc
- FIG. 3 shows a further embodiment variant of the residual air gap disk proposed according to the invention.
- FIG. 1 shows a schematic representation of a magnetic group of a fuel injector.
- a magnet assembly 10 which facilitates the actuation of a fuel injector, e.g. a fuel injector for a high-pressure accumulator injection system (common rail) is inserted into an injector body 12 of the fuel injector.
- the magnet assembly 10 opposite is an anchor 14, the plan side
- an adjustment ring which serves to adjust the solenoid valve.
- the adjusting ring 20 rests in the injector body 12 and at the same time serves as a support for a magnet sleeve 32.
- the magnetic sleeve 32 serves to receive a magnetic core 22.
- the magnetic core 22 in turn encloses a magnetic coil 24
- Magnetic core 22 is open at an end face 26, which is the plan side 16 of the armature 14, and divided by the position of the coil 24 into an inner pole 28 and an outer pole 30.
- FIG. 1 shows that the magnet sleeve 32 with its inside 36 encloses the magnetic core 22.
- the magnet sleeve 32 is with a clamping nut, not shown in Figure 1 on the injector body 12 of the fuel injector attached.
- the magnetic core 22 is fixed within the magnet assembly, for example via a flange or a welded joint.
- the magnetic core 22 of the magnet group 10 comprises a passage opening in which on the one hand the solenoid valve spring 18, which acts on the armature 14 on the plan side 16, is arranged, and on the other hand serves as return 40, via the controlled upon actuation of the solenoid valve from a control chamber of the fuel injector Control amount or leakage in the low-pressure side return of a fuel injection system, for example, flows back.
- a residual air gap disk 44 is clamped at a clamping point 42 between the front side 26 of the magnetic core 22 and the upper side of the overlap 34 of the magnetic sleeve 32.
- Metal foil made of non-magnetic material, e.g. circular residual air gap disc 44 is placed on the overlap 34 in the magnetic sleeve 32, and then the magnetic core 22 is mounted with the magnetic coil 24. When a clamping nut is acted upon with a defined tightening torque, the magnet assembly is fastened in the injector body 12.
- the residual air gap disk 44 is no longer on the plan side 16 of the armature 14, for example. attached by a spring plate or the like, but assigned in departure from the previous practice of the end face 26 of the magnetic core 22 of the magnet assembly 10.
- FIGS. 2 and 3 show that in one embodiment of the residual air gap disc 44 in the form of a circular ring, cf. illustration according to FIGS. 2 and 3, the inner pole 28 of the magnetic core 22 remains free, while the outer pole 30 of the magnetic core 22 is separated from the residual air gap disc 44 is covered.
- residual air gap disc 44 no longer obscures, not even partially, the spring space, ie the passage opening in the low-pressure side return 40 and thus no longer obstructs the outflow of the control or leakage amount in the low-pressure side return 40.
- the cross section of the return geometry, ie the low-pressure side return 40 in the magnet assembly 10 is independent of the position of the proposed inventions residual air disc 44th Mit Reference numerals 38 are anchor slots, by which the control of leakage or control amount in the low-pressure side return is improved.
- the solenoid valve spring 18 is located.
- FIG. 2 shows that the residual air gap disk 44 shown there is designed as a circular ring 48.
- a circular ring width of the circular ring 58 is indicated by reference numeral 54.
- An inner diameter 50 of the formed as a circular ring 48 residual air gap disc 44 is dimensioned such that it exceeds the outer diameter of the inner pole 28 of the magnetic core 22 of the magnet assembly 10, further, the inner diameter 50 of the annulus 48 is designed so that the magnetic coil 24 is not substantially through made of amagnetic material, as a metal foil, for example trained residual air gap disc 44 is covered.
- the inner diameter of the bore of the annular-shaped residual air gap disc 44 is at most as large as the inner diameter of the outer pole 30 or the outer diameter of the coil space in which the magnetic coil 24 is accommodated.
- the illustration according to FIG. 2 furthermore shows that the residual air gap disk 44 designed as a circular ring 48 comprises a continuous single slot 46.
- the slot is used to prevent deformation in the
- FIG. 3 is a further embodiment variant of a
- an inner slot 56 is formed on the further embodiment variant shown in FIG. 3 as the residual air gap disk.
- a number of slots 60 extend in the radial direction.
- the slots 60 do not run continuously but have a slot length 58 which is smaller than the annular width 54.
- the annular width 54 represents the difference between the outer diameter 52 and the outer diameter 52
- Magnetic sleeve 32 and the end face 26 of the magnetic core 22 can reach.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009001706A DE102009001706A1 (de) | 2009-03-20 | 2009-03-20 | Restluftspaltscheibe |
| PCT/EP2010/050630 WO2010105864A1 (de) | 2009-03-20 | 2010-01-20 | Restluftspaltscheibe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2409308A1 true EP2409308A1 (de) | 2012-01-25 |
| EP2409308B1 EP2409308B1 (de) | 2018-01-10 |
Family
ID=41818770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10703242.7A Active EP2409308B1 (de) | 2009-03-20 | 2010-01-20 | Restluftspaltscheibe |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2409308B1 (de) |
| CN (1) | CN102362319B (de) |
| DE (1) | DE102009001706A1 (de) |
| RU (1) | RU2525971C2 (de) |
| WO (1) | WO2010105864A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11459987B2 (en) | 2020-08-13 | 2022-10-04 | Caterpillar Inc. | Valve assembly having electrical actuator with balanced stator |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2434503B1 (de) * | 2010-09-27 | 2015-07-29 | ABB Technology AG | Magnetisches Stellglied mit einem nicht magnetischen Einsatz |
| DE102012206215A1 (de) | 2012-04-16 | 2013-10-17 | Robert Bosch Gmbh | Magnetbaugruppe, insbesondere für ein Magnetventil eines Kraftstoffinjektors |
| DE102012206214A1 (de) | 2012-04-16 | 2013-10-17 | Robert Bosch Gmbh | Magnetbaugruppe, insbesondere für ein Magnetventil eines Kraftstoffinjektors |
| FR2991728B1 (fr) * | 2012-06-08 | 2016-04-29 | Bosch Gmbh Robert | Soupape electromagnetique de systeme d'injection de carburant |
| DE102012214920A1 (de) | 2012-08-22 | 2014-02-27 | Continental Automotive Gmbh | Dämpfungsoberfläche an Ventilkomponenten |
| DE102013212504A1 (de) * | 2013-06-27 | 2014-12-31 | Robert Bosch Gmbh | Magnetbaugruppe für einen Kraftstoffinjektor |
| DE102014215589A1 (de) | 2014-02-10 | 2015-08-13 | Robert Bosch Gmbh | Restluftspaltscheibe für eine Magnetbaugruppe eines Magnetventils und Verfahren zum Herstellen einer Restluftspaltscheibe |
| DE102014207988B3 (de) * | 2014-04-29 | 2015-09-10 | Schaeffler Technologies AG & Co. KG | Elektromagnetische Stellvorrichtung |
| DE102015212130A1 (de) | 2015-06-30 | 2017-01-05 | Robert Bosch Gmbh | Magnetbaugruppe und Kraftstoffinjektor mit einer Magnetbaugruppe |
| TR201509949A2 (tr) * | 2015-08-11 | 2017-02-21 | Bosch Sanayi Ve Tic A S | Pula sahi̇p bi̇r yakit enjektörü |
| DE102015223167A1 (de) * | 2015-11-24 | 2017-05-24 | Robert Bosch Gmbh | Schaltventil für einen Kraftstoffinjektor sowie Kraftstoffinjektor |
| DE102015226499A1 (de) * | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Magnetventil für ein Kraftstoffeinspritzventil, Verfahren zum Betreiben des Magnetventils und Kraftstoffeinspritzventil mit einem solchen Magnetventil |
| DE102022200978A1 (de) * | 2022-01-31 | 2023-08-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Magnetbaugruppe für einen Kraftstoffinjektor und Kraftstoffinjektor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238224A (en) * | 1992-08-20 | 1993-08-24 | Siemens Automotive L.P. | Dry coil |
| DE19508104C2 (de) | 1995-03-08 | 2000-05-25 | Volkswagen Ag | Verfahren zur Regelung eines Kühlkreislaufes eines Verbrennungskraftmotors |
| US5918818A (en) * | 1996-05-22 | 1999-07-06 | Denso Corporation | Electromagnetically actuated injection valve |
| DE19650865A1 (de) | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Magnetventil |
| DE19802244A1 (de) * | 1998-01-22 | 1999-07-29 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| US6655611B2 (en) * | 2001-02-12 | 2003-12-02 | Delphi Technologies, Inc. | Electromagnetic fuel injector comprising flexible element for positioning armature |
| JP3715961B2 (ja) * | 2002-11-12 | 2005-11-16 | 三菱電機株式会社 | 電磁弁 |
| DE102007037825A1 (de) * | 2007-08-10 | 2009-02-12 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
-
2009
- 2009-03-20 DE DE102009001706A patent/DE102009001706A1/de not_active Withdrawn
-
2010
- 2010-01-20 WO PCT/EP2010/050630 patent/WO2010105864A1/de not_active Ceased
- 2010-01-20 RU RU2011142079/07A patent/RU2525971C2/ru active
- 2010-01-20 CN CN2010800129900A patent/CN102362319B/zh active Active
- 2010-01-20 EP EP10703242.7A patent/EP2409308B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010105864A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11459987B2 (en) | 2020-08-13 | 2022-10-04 | Caterpillar Inc. | Valve assembly having electrical actuator with balanced stator |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2409308B1 (de) | 2018-01-10 |
| DE102009001706A1 (de) | 2010-09-23 |
| RU2525971C2 (ru) | 2014-08-20 |
| CN102362319A (zh) | 2012-02-22 |
| CN102362319B (zh) | 2013-11-20 |
| RU2011142079A (ru) | 2013-04-27 |
| WO2010105864A1 (de) | 2010-09-23 |
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