EP1425508B1 - Injecteur de carburant - Google Patents
Injecteur de carburant Download PDFInfo
- Publication number
- EP1425508B1 EP1425508B1 EP02747214A EP02747214A EP1425508B1 EP 1425508 B1 EP1425508 B1 EP 1425508B1 EP 02747214 A EP02747214 A EP 02747214A EP 02747214 A EP02747214 A EP 02747214A EP 1425508 B1 EP1425508 B1 EP 1425508B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- valve
- valve needle
- fuel injection
- damping element
- 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 abstract description 57
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 238000013016 damping Methods 0.000 claims abstract description 26
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- 239000000806 elastomer Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 230000004323 axial length Effects 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction 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
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 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
- 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
-
- 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
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
Definitions
- the invention relates to 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 is unfavorable for the course of the magnetic field and makes it difficult to close the field lines and thus the achievement of high attraction forces in the opening movement of the fuel injection valve.
- the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that a damping element dampens the armature and the valve needle radially against each other by a hollow cylindrical elastomeric part pushed onto the valve needle and the two components are inserted together in a recess of the armature. As a result, both the needle bouncer and the bounce bouncer are effectively damped.
- the surfaces of the damping element are vulcanized to produce better adhesion between the elastomeric damping element and the metallic components valve needle and armature.
- FIG. 1 An illustrated in Fig. 1 embodiment of an inventively designed fuel injector 1 is carried out in the form of a fuel injection valve for fuel injection systems of mixture-compression, spark-ignited internal combustion engines.
- the fuel injection valve 1 is suitable in particular for the direct injection of fuel into a combustion chamber, not shown, 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 the valve closing body 4, which cooperates with a arranged on a valve seat body 5 valve seat surface 6 to a sealing seat.
- the fuel injection valve 1 in the exemplary embodiment is an inwardly opening fuel injection valve 1 which has an injection opening 7.
- the nozzle body 2 is sealed by a seal 8 against the outer pole 9 of a magnetic coil 10.
- the magnet coil 10 is encapsulated in a coil housing 11 and wound on a coil carrier 12, which rests against an inner pole 13 of the magnetic coil 10.
- the inner pole 13 and the outer pole 9 are separated from each other by a constriction 26 and connected to each other by a non-ferromagnetic connecting member 29.
- the magnetic coil 10 is energized via a line 19 from a via an electrical plug contact 17 can be supplied with electric current.
- the plug contact 17 is surrounded by a plastic casing 18, which may be molded on the inner
- valve needle 3 is guided in a valve needle guide 14, which is designed disk-shaped.
- armature 20 On the other side of the dial 15 is the armature 20. This is connected via a first flange 21 frictionally with the valve needle 3 in connection, which is connected by a weld 22 with the first flange 21.
- a return spring 23 On the first flange 21, a return spring 23 is supported, which is brought in the present design of the fuel injection valve 1 by a sleeve 24 to bias.
- a second flange 31 is arranged, which by means of a weld 33 frictionally with the valve needle 3 is in communication and serves as a lower anchor stop.
- the armature 20 and the valve seat body 5 run fuel channels 30a to 30c.
- the fuel is supplied via a central fuel supply 16 and filtered by a filter element 25.
- the fuel injection valve 1 is exhausted by a seal 28 against a fuel line, not shown.
- the fuel injection valve 1 in a recess 34 of the armature 20 on a damping element 32 which is formed as a hollow cylinder and is penetrated by the valve needle 3.
- the damping element 32 may consist of an elastomer, for example of rubber, which by vulcanization so with the armature 20th on the one hand and the valve needle 3 on the other hand is in frictional connection, that the axial movements of said components are mutually attenuated, whereby Ankeranschlagspreller both when opening in the upper and closing the fuel injector 1 in the lower stroke position of the armature 20 can be avoided.
- the armature 20 In the idle state of the fuel injection valve 1, the armature 20 is acted upon by the return spring 23 counter to its stroke direction so that the valve closing body 4 is held on the valve seat 6 in sealing engagement. Upon energization of the solenoid coil 10, this builds up a magnetic field, which moves the armature 20 against the spring force of the return spring 23 in the stroke direction, wherein the stroke is determined by a located in the rest position between the inner pole 12 and the armature 20 working gap 27.
- the armature 20 takes the first flange 21, which is welded to the valve needle 3, also in the stroke direction with.
- the valve closing body 4 communicating with the valve needle 3 lifts off from the valve seat surface 6 and the fuel is sprayed off through the injection opening 7.
- the armature 20 drops after sufficient degradation of the magnetic field by the pressure of the return spring 23 from the inner pole 13, whereby the valve connected to the needle 3 in communication first flange 21 moves against the stroke direction.
- the valve needle 3 is thereby moved in the same direction, whereby the valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
- FIG. 2 shows in an excerpted sectional view an enlarged view of the region II in FIG. 1.
- the armature 20 is shown with the damping element 32 and For the sake of clarity, the illustration of the other components located in this area has been dispensed with.
- the fuel injection valve 1 in its preferred embodiment has a damping element 32, which is arranged in an axial recess 34 of the armature 20.
- the damping element 32 is formed as a hollow cylinder and preferably made of an elastomer material, such as rubber.
- the damping element 32 is provided with vulcanized layers 35a and 35b, which rest against the recess 34 of the armature 20 and the valve needle 3 and by pressure and static friction forces for an elastic connection between Armature 20 and valve needle 3 provide.
- the damping element 32 is limited in its axial length only by the axial length of the recess 34 of the armature 20. The selection of the length and the wall thickness of the damping element 32 is carried out mainly according to the aspects of manufacturing and assembly technology and durability in continuous operation.
- the movements of the armature 20 and the valve needle 3 can be effectively mutually damped, whereby Ankerpreller be avoided on the first sleeve 21 when opening the fuel injection valve 1 and the second sleeve 31 when closing the fuel injection valve 1.
- the movement of the valve needle 3 is damped, so that on the other hand omitted valve needle preller in the sealing seat.
- the dynamics of the fuel injection valve 1 improves, so that shorter opening and closing times in conjunction with faster switching cycles and smaller and more accurate Zumeßmengen can be realized.
- the invention is not limited to the illustrated embodiment and z. B. also suitable for outward opening fuel injectors 1.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Claims (4)
- Injecteur de carburant (1), notamment injecteur de carburant (1) pour systèmes d'injection de moteurs à combustion interne, doté d'un aiguille de soupape (3) coopérant avec une surface de siège de soupape (6) pour former un siège d'étanchéité et d'un induit (20) s'engageant sur l'aiguille de soupape (3), l'induit (20), présentant un évidement (34) le traversant, étant mobile axialement sur le aiguille de soupape (3), et amorti par un élément amortisseur (32) en élastomère,
caractérisé en ce que
l'élément amortisseur (32) cylindrique creux pourvu d'une première et d'une deuxième couche vulcanisée est disposé de telle manière dans l'évidement (34) de l'induit (20) et sur l'aiguille de soupape (3) traversant l'élément amortisseur que la première couche vulcanisée est reliée par complémentarité de force à l'évidement de l'induit et que la deuxième couche vulcanisée est reliée par complémentarité de force à l'aiguille de soupape (3) de sorte celle-ci est reliée à l'induit (20) par l'élément amortisseur (32) en direction radiale. - Injecteur de carburant selon l'une des revendications 1,
caractérisé en ce que
l'aiguille de soupape (3) peut être poussée avec l'élément amortisseur (32) dans l'évidement (34) de l'induit (20). - Injecteur de carburant selon l'une des revendications 1 à 2,
caractérisé en ce qu'
une longueur axiale de l'élément amortisseur (32) est inférieure ou égale à une longueur axiale de l'évidement (34) de l'induit (20). - Injecteur de carburant selon l'une des revendications 1 à 3,
caractérisé en ce que
l'induit (20) présente au moins un canal de carburant axial (30a).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10140795 | 2001-08-20 | ||
DE10140795A DE10140795A1 (de) | 2001-08-20 | 2001-08-20 | Brennstoffeinspritzventil |
PCT/DE2002/002148 WO2003018994A1 (fr) | 2001-08-20 | 2002-06-12 | Injecteur de carburant |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1425508A1 EP1425508A1 (fr) | 2004-06-09 |
EP1425508B1 true EP1425508B1 (fr) | 2006-03-08 |
Family
ID=7696035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02747214A Expired - Lifetime EP1425508B1 (fr) | 2001-08-20 | 2002-06-12 | Injecteur de carburant |
Country Status (7)
Country | Link |
---|---|
US (1) | US6869034B2 (fr) |
EP (1) | EP1425508B1 (fr) |
JP (1) | JP2005500471A (fr) |
KR (1) | KR20040027900A (fr) |
AT (1) | ATE319928T1 (fr) |
DE (2) | DE10140795A1 (fr) |
WO (1) | WO2003018994A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004293308A (ja) * | 2003-03-25 | 2004-10-21 | Hitachi Unisia Automotive Ltd | 燃料噴射弁 |
WO2011149372A1 (fr) * | 2010-05-25 | 2011-12-01 | Zuev Boris Konstantinovich | Injecteur à commande électrique |
US9346074B2 (en) | 2010-09-13 | 2016-05-24 | Nordson Corporation | Conformal coating applicator and method |
DE102012202253A1 (de) * | 2012-02-15 | 2013-08-22 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
RU2563052C1 (ru) * | 2012-03-23 | 2015-09-20 | Борис Константинович Зуев | Электроуправляемая форсунка |
DE102012205580A1 (de) * | 2012-04-04 | 2013-10-10 | Robert Bosch Gmbh | Halter zur Befestigung einer Komponente an einer Brennkraftmaschine, Lagerbuchse für solch einen Halter und Brennstoffeinspritzanlage |
EP2703633A1 (fr) * | 2012-08-28 | 2014-03-05 | Continental Automotive GmbH | Ensemble de soupape pour soupape d'injection et soupape d'injection |
DE102012215779A1 (de) | 2012-09-06 | 2014-03-06 | Robert Bosch Gmbh | Einspritzventil |
RU2519538C1 (ru) * | 2012-10-29 | 2014-06-10 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Электрогидравлическая форсунка для дизеля |
US9228550B2 (en) | 2013-03-11 | 2016-01-05 | Stanadyne Llc | Common rail injector with regulated pressure chamber |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US63173A (en) * | 1867-03-26 | Beims of hats | ||
US4766405A (en) * | 1987-04-14 | 1988-08-23 | Allied Corporation | Dynamic energy absorber |
US5299776A (en) * | 1993-03-26 | 1994-04-05 | Siemens Automotive L.P. | Impact dampened armature and needle valve assembly |
DE19756103A1 (de) * | 1997-12-17 | 1999-06-24 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19849210A1 (de) * | 1998-10-26 | 2000-04-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19950761A1 (de) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10043085A1 (de) * | 2000-09-01 | 2002-03-14 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
2001
- 2001-08-20 DE DE10140795A patent/DE10140795A1/de not_active Withdrawn
-
2002
- 2002-06-12 WO PCT/DE2002/002148 patent/WO2003018994A1/fr active IP Right Grant
- 2002-06-12 KR KR10-2004-7002375A patent/KR20040027900A/ko not_active Application Discontinuation
- 2002-06-12 AT AT02747214T patent/ATE319928T1/de not_active IP Right Cessation
- 2002-06-12 US US10/399,369 patent/US6869034B2/en not_active Expired - Fee Related
- 2002-06-12 DE DE50206027T patent/DE50206027D1/de not_active Expired - Fee Related
- 2002-06-12 JP JP2003523822A patent/JP2005500471A/ja active Pending
- 2002-06-12 EP EP02747214A patent/EP1425508B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2003018994A1 (fr) | 2003-03-06 |
US6869034B2 (en) | 2005-03-22 |
KR20040027900A (ko) | 2004-04-01 |
DE50206027D1 (de) | 2006-05-04 |
DE10140795A1 (de) | 2003-03-06 |
US20040035955A1 (en) | 2004-02-26 |
ATE319928T1 (de) | 2006-03-15 |
JP2005500471A (ja) | 2005-01-06 |
EP1425508A1 (fr) | 2004-06-09 |
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