EP1387941B1 - Brennstoffeinspritzventil mit einem dämpfungselement zwischen anker und ventilnadel - Google Patents
Brennstoffeinspritzventil mit einem dämpfungselement zwischen anker und ventilnadel Download PDFInfo
- Publication number
- EP1387941B1 EP1387941B1 EP02732382A EP02732382A EP1387941B1 EP 1387941 B1 EP1387941 B1 EP 1387941B1 EP 02732382 A EP02732382 A EP 02732382A EP 02732382 A EP02732382 A EP 02732382A EP 1387941 B1 EP1387941 B1 EP 1387941B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- damping element
- injection valve
- sleeve
- armature
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 61
- 238000002347 injection Methods 0.000 title claims description 47
- 239000007924 injection Substances 0.000 title claims description 47
- 238000013016 damping Methods 0.000 title claims description 40
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000209035 Ilex Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000036540 impulse transmission Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
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
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
Definitions
- the invention is based on a fuel injection valve according to the preamble of the main claim.
- a disadvantage is in particular the complex design with an additional component. Also, the large area Elastomer ring unfavorable for the course of the magnetic field and complicates the closing of the field lines and thus the Achieving high tightening forces during the opening movement of the Fuel injector.
- a disadvantage of the described embodiment is the additional effort and space requirements. Also, the anchor itself not decoupled. His impulse thus increases the valve needle the tendency to bounce.
- the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that the damping element in a Recess of the armature is arranged, whereby on the one hand the Anchor is prevented from twisting and on the other hand complex additional components as well as assembly costs can be saved.
- a Damping element with rectangular cross-section for example as a hose section.
- Another advantage is the training of recessed Areas at either the shoulder-like widening of the Sleeve or on the contact surface of the damping element on the Sleeve, because of the number and depth of the areas that Damping behavior is arbitrarily influenced.
- a fuel injection valve 1 shown in FIG. 1 is in the form of a fuel injection valve 1 for Fuel injection systems of mixture compression, spark-ignited Brennkraftmäschinen executed.
- the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
- the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
- the valve needle 3 is in operative connection with a Valve closing body 4, with one on one Valve seat body 5 arranged valve seat surface 6 to a Tight fit together.
- a Valve closing body 4 In the fuel injection valve 1 is it in the exemplary embodiment to an inward opening fuel injection valve 1, which via a Spray opening 7 has.
- the nozzle body 2 is through a Seal 8 against the outer pole 9 of a magnetic coil 10th sealed.
- the magnetic coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10.
- the Solenoid 10 is connected via a line 19 from a via an electrical plug-in contact 17 can be supplied electrical Electricity excited.
- the plug contact 17 is one of Plastic casing 18 surrounded, the inner pole 13th can be injected.
- the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15.
- An the other side of the dial 15 is a Anchor 20. This is frictionally connected via a flange 21 with the valve needle 3 in conjunction, which by a Weld 22 is connected to the flange 21.
- On the Flange 21 is supported by a return spring 23, which in the present design of the fuel injection valve. 1 is biased by a sleeve 24.
- the armature 20 and the valve seat body fifth run fuel channels 30a to 30c, the fuel, which fed via a central fuel supply 16 and is filtered by a filter element 25, for Lead spray opening 7.
- the fuel injection valve 1 is by a seal 28 against a not further sealed illustrated fuel line.
- a Recess 35 a designed as an O-ring damping element 32, which consists of an elastomeric material, arranged. It lies on a shoulder-like widening 36 a preferably deep-drawn sleeve 31, which via a weld 33 frictionally with the valve needle 3 is connected.
- the anchor In the manufacture of the armature 20 and valve needle 3rd existing component is the flange 21 with the valve needle 3 welded, the armature 20 and the damping element 32nd fitted and then the sleeve 31 under pressure the damping element 32 is pressed and also with the Valve needle 3 welded. This way the anchor has 20 only has a very subdued game and only has slight tendency to twist between the flange 21st and the damping element 32nd
- FIG. 2 A more detailed description and description of the inventive measures is the description of FIG. 2 refer to.
- valve needle 3 is characterized in the same direction moves, causing the valve closing body 4 sits on the valve seat surface 6 and the Fuel injection valve 1 is closed.
- Fig. 2 shows in a partial sectional view of a enlarged view of the area II in Fig. 1st
- valve needle 3 Shown is a part of the valve needle 3, the so welded flange 21, the sleeve 31 and in the Recess 35 of the armature 20 inserted according to the invention designed damping element 32nd
- this provides Damping element 32 when opening for a nearly instantaneous opening movement, since the armature 20 at Tightening in the magnetic field of the magnetic coil 10, the sleeve 31st via the prestressed damping element 32 instantaneously.
- the bias of the damping element 32 is after the Closing the fuel injection valve 1 ensured that Preller of the armature 20 at one through the sleeve 31st formed anchor stop surface without a renewed undesired opening of the fuel injection valve 1 be absorbed.
- the axial position is the sleeve 31 to be chosen so that between the armature 20 and the Sleeve 31, a gap 38 is present, which is a minor Compression of the armature 20 allowed.
- Damping element 32 z. B. formed as an O-ring is easier to handle and incorporate as, for example, damping membranes and wise also advantages in manufacturing. Membranes are common Cracks, burrs or dirty cut edges tend and tend also during operation of the fuel injection valve 1 often to side-outs and subsequent Malfunction.
- the O-ring-shaped damping element 32 is on the other hand chambered and thus can not even when swelling be deformed.
- the attachment of the damping element 32 in the recess 35th in the downstream end face 34 of the armature 20 can also due to the preloaded assembly twisting of the armature 20 and resulting stroke changes prevent.
- the endurance behavior of the Fuel injection valve 1 is thereby positive affected.
- Fig. 3 shows in the same view as Fig. 2 a partial schematic section through a second embodiment a fuel injection valve 1 according to the invention. Matching components are given the same reference numerals Mistake.
- the damping element 32 executed as a form ring, which corresponds to the geometry of Recess 35 in the downstream end face 34 of the Ankers 20 is adapted. This may cause the shoulder-like Broadening 36 of the sleeve 31 better on the damping element 32 abuts, whereby the positive engagement is improved and the Damping behavior of the fuel injection valve 1 targeted can be influenced.
- the damping element 32 as a molded part with rectangular cross-section produced, for example in shape a hose section. This form is very simple and economically feasible.
- FIG. 4 shows a schematic plan view in the flow direction on the sleeve 31 of an inventively designed Fuel injection valve 1 according to FIG. 2 or FIG. 3.
- the shoulder-like widening 36 of the sleeve 31 can thereby be recessed several times, as the hatched areas 39 suggest. Also by this measure, the Damping behavior can be influenced specifically, for example through the depth and the number of recessed sections.
- the sleeve 31 instead of the shoulder-like widening 36 the sleeve 31 also has a contact surface of the damping element 32 have recessed areas and on a flat Contact surface of the sleeve lie.
- the invention is not limited to that shown Embodiment limited and z. B. also for the outside opening fuel injectors 1 or others Anchor shapes, such as flat anchors suitable.
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)
Description
- Fig. 1
- einen schematischen Schnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 2
- einen schematischen Ausschnitt aus dem in Fig. 1 dargestellten ersten Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils im Bereich II in Fig. 1,
- Fig. 3
- einen schematischen Ausschnitt im gleichen Bereich wie in Fig. 2 aus einem zweiten Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils, und
- Fig. 4
- eine schematische Aufsicht in Strömungsrichtung auf die Hülse des in Fig. 3 dargestellten zweiten Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils.
Claims (9)
- Brennstoffeinspritzventil (1) für Brennstoffeinspritzanlagen von Brennkraftmaschinen,mit einer Ventilnadel (3), die mit einer Ventilsitzfläche (6) zu einem Dichtsitz zusammenwirkt, und mit einem an der Ventilnadel (3) angreifenden Anker (20), wobei der Anker (20) an der Ventilnadel (3) axial beweglich ist und von einem aus einem Elastomer bestehenden Dämpfungselement (32) gedämpft wird, wobei das Dämpfungselement (32) auf einer mit der Ventilnadel (3) kraftschlüssig verbundenen Hülse (31) aufliegt,
dadurch gekennzeichnet, daß das Dämpfungselement (32) in einer Ausnehmung (35) angeordnet ist, die in einer abströmseitigen Stirnseite (34) des Ankers (20) ausgebildet ist, und
daß zwischen dem Anker (20) und der Hülse (31) ein Spalt (38) ausgebildet ist, wobei der Spalt (38) ein geringfügiges Einfedern des Ankers (20) erlaubt. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß sich die Hülse (31) mit einer schulterartigen Verbreiterung (36) an dem Dämpfungselement (32) abstützt. - Brennstoffeinspritzventil nach Anspruch 2,
dadurch gekennzeichnet, daß das Dämpfungselement (32) durch die Hülse (31) vorgespannt ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß das Dämpfungselement (32) als O-Ring ausgebildet ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß das Dämpfungselement (32) einen rechteckigen Querschnitt aufweist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß das Dämpfungselement (32) einen an die Form der Ausnehmung (35) des Ankers (20) angepaßte Form aufweist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß die Hülse (31) durch Tiefziehen hergestellt ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß die Hülse (31) Durchströmöffnungen (37) für den Brennstoff aufweist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß das Dämpfungselement (32) und/oder die Hülse (31) mehrere eingetiefte Bereiche (39) an einer der schulterartigen Verbreiterung (36) der Hülse (31) zugewandten Anlagefläche (40) und/oder der schulterartigen Verbreiterung (36) der Hülse (31) aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10118162A DE10118162B9 (de) | 2001-04-11 | 2001-04-11 | Brennstoffeinspritzventil |
DE10118162 | 2001-04-11 | ||
PCT/DE2002/001290 WO2002084102A1 (de) | 2001-04-11 | 2002-04-09 | Brennstoffeinspritzventil mit einem dämpfungselement zwischen anker und ventilnadel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1387941A1 EP1387941A1 (de) | 2004-02-11 |
EP1387941B1 true EP1387941B1 (de) | 2005-07-13 |
Family
ID=7681274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02732382A Expired - Lifetime EP1387941B1 (de) | 2001-04-11 | 2002-04-09 | Brennstoffeinspritzventil mit einem dämpfungselement zwischen anker und ventilnadel |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1387941B1 (de) |
JP (1) | JP4210523B2 (de) |
CZ (1) | CZ20023957A3 (de) |
DE (2) | DE10118162B9 (de) |
WO (1) | WO2002084102A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106930881A (zh) * | 2015-12-21 | 2017-07-07 | 罗伯特·博世有限公司 | 用于计量流体的阀 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10208224A1 (de) * | 2002-02-26 | 2003-09-11 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10345967B4 (de) * | 2003-10-02 | 2014-02-27 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004024533A1 (de) | 2004-05-18 | 2005-12-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
CN100389258C (zh) * | 2004-06-02 | 2008-05-21 | 株式会社电装 | 燃料喷射阀 |
JP2006017101A (ja) * | 2004-06-02 | 2006-01-19 | Denso Corp | 燃料噴射弁 |
DE102005030957B4 (de) | 2005-06-30 | 2024-01-18 | Robert Bosch Gmbh | Einrichtung zur Dämpfung des Ankerhubs in Magnetventilen |
EP2166220B1 (de) | 2008-09-19 | 2012-02-29 | Continental Automotive GmbH | Einspritzventil |
CN102671795A (zh) * | 2011-03-07 | 2012-09-19 | 傅伟淇 | 一种喷水蜡器 |
JP5965253B2 (ja) | 2012-02-20 | 2016-08-03 | 株式会社デンソー | 燃料噴射弁 |
US9651011B2 (en) | 2012-05-08 | 2017-05-16 | Continental Automotive Gmbh | Valve assembly for an injection valve and injection valve |
DE102013206600B4 (de) | 2013-04-12 | 2015-08-06 | Continental Automotive Gmbh | Einspritzsystem zum Einspritzen von Kraftstoff in eine Brennkraftmaschine und Regelverfahren für ein solches Einspritzsystem |
DE102013207555B3 (de) | 2013-04-25 | 2014-10-09 | Continental Automotive Gmbh | Verfahren zur Einspritzmengenadaption |
EP2796703B1 (de) * | 2013-04-26 | 2016-07-20 | Continental Automotive GmbH | Ventilanordnung für ein Einspritzventil und Einspritzventil |
EP3009663B1 (de) * | 2014-10-15 | 2020-06-24 | Vitesco Technologies GmbH | Ventilanordnung und fluidinjektor |
DE102016218515A1 (de) * | 2016-09-27 | 2018-03-29 | Robert Bosch Gmbh | Verfahren zur Steuerung von schaltbaren Ventilen, insbesondere von Einspritzventilen einer Brennkraftmaschine eines Kraftfahrzeugs |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4766405A (en) * | 1987-04-14 | 1988-08-23 | Allied Corporation | Dynamic energy absorber |
US4978074A (en) * | 1989-06-21 | 1990-12-18 | General Motors Corporation | Solenoid actuated valve assembly |
US5299776A (en) * | 1993-03-26 | 1994-04-05 | Siemens Automotive L.P. | Impact dampened armature and needle valve assembly |
DE19849210A1 (de) * | 1998-10-26 | 2000-04-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19927900A1 (de) * | 1999-06-18 | 2000-12-21 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19950761A1 (de) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
2001
- 2001-04-11 DE DE10118162A patent/DE10118162B9/de not_active Expired - Fee Related
-
2002
- 2002-04-09 CZ CZ20023957A patent/CZ20023957A3/cs unknown
- 2002-04-09 DE DE50203624T patent/DE50203624D1/de not_active Expired - Lifetime
- 2002-04-09 EP EP02732382A patent/EP1387941B1/de not_active Expired - Lifetime
- 2002-04-09 JP JP2002581821A patent/JP4210523B2/ja not_active Expired - Fee Related
- 2002-04-09 WO PCT/DE2002/001290 patent/WO2002084102A1/de not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106930881A (zh) * | 2015-12-21 | 2017-07-07 | 罗伯特·博世有限公司 | 用于计量流体的阀 |
Also Published As
Publication number | Publication date |
---|---|
DE50203624D1 (de) | 2005-08-18 |
JP2004518902A (ja) | 2004-06-24 |
WO2002084102A1 (de) | 2002-10-24 |
JP4210523B2 (ja) | 2009-01-21 |
CZ20023957A3 (en) | 2004-07-14 |
EP1387941A1 (de) | 2004-02-11 |
DE10118162C2 (de) | 2003-04-24 |
DE10118162B9 (de) | 2004-09-09 |
DE10118162A1 (de) | 2002-10-24 |
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