EP1102931B1 - Brennstoffeinspritzventil und verfahren zu dessen herstellung - Google Patents
Brennstoffeinspritzventil und verfahren zu dessen herstellung Download PDFInfo
- Publication number
- EP1102931B1 EP1102931B1 EP00909052A EP00909052A EP1102931B1 EP 1102931 B1 EP1102931 B1 EP 1102931B1 EP 00909052 A EP00909052 A EP 00909052A EP 00909052 A EP00909052 A EP 00909052A EP 1102931 B1 EP1102931 B1 EP 1102931B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- connecting part
- fuel injection
- valve casing
- cut
- 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
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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
- F02M51/0671—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 having an elongated valve body attached thereto
-
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
Definitions
- the invention is based on a fuel injection valve according to the preamble of claim 1, and a method for producing a fuel injection valve according to the preamble of claim 6.
- Valve housing known, which has a fuel inlet nozzle and a valve seat carrier partially encloses.
- Valve seat carrier has a valve seat surface with one actuated by means of a valve needle Valve-closing body cooperates to a sealing seat.
- One desired valve lift to achieve a required in the open valve state between valve closing body and Valve seat area metered amount of fuel is through Liner of a Hubeinstellhunt in the axial direction between a stopper plate and an end face of the Valve seat carrier set. After the adjustment become the valve body and the valve seat carrier interconnected by an end portion of a cylindrical holding portion of the valve housing to the Valve seat carrier is crimped.
- This press punches are used, located at the core, on Support valve housing or on the connection part. At the respective axial end surfaces the abovementioned components are subjected to a pressing force locally and vertically, such that a portion of the material of the valve housing substantially perpendicular to Pressing direction is brought to the plastic flow in the annular grooves.
- the fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that the axial strain between the valve housing and valve seat carrier can be specified and the preparation of the compound in simple and cost-saving steps can be done. Besides that is the compound resistant to aging, which causes the Life of the fuel injector increased.
- the recess is as one circumferential groove on a lateral surface of the valve seat carrier formed, resulting in a high strength of Flaring results.
- the crimp connection has several Bördelsegmente that with respect to a valve axis circumferentially offset from each other are arranged and where the valve housing with the valve seat carrier to one flanged partial connection under release of Unbördelten sections is connected. This allows the Production of flare connection can be further simplified.
- a Hubeinstellhunt between the valve housing and the valve seat carrier provided a Hubeinstellhunt.
- the Hubeinstellhunt can be the stroke of the valve needle to adjust.
- the production method according to the invention with the features of claim 6 has the advantage of cost-effective and automatable feasibility.
- the axial insertion depth of the Valve seat carrier in the valve housing by a Hubstellstellhunt for adjusting the stroke of the valve needle is set. This can be a difference of a Valve needle length of the valve needle from a desired length compensate.
- Fig. 1 shows in an excerpt axial Sectional view of a fuel injector 100.
- Das Fuel injector 100 is here as internal opening Fuel injection valve 100 executed.
- the Fuel injection valve 100 is used in particular for direct injection of fuel, in particular of Gasoline, in a combustion chamber of a mixture-compacting spark ignition internal combustion engine as so-called. Gasoline direct injection valve.
- fuel injector 100 is also suitable for other applications.
- the fuel injection valve 100 has a tubular Connecting part in the form of a valve seat carrier 1 with a Spray opening 2 on.
- the in a cylinder head of the Internal combustion engine introduced spray opening 2 is by means of a sealing ring 3 sealed to the outside.
- a Valve seat support 1 are also other, partly the Housing of the valve forming connecting parts conceivable, the according to the invention with a valve housing 20 by crimping are firmly connected.
- the valve seat carrier 1 has an axial longitudinal bore 4, which receives an axially movable valve needle 5.
- a valve seat surface 6 is formed, the one with a frusto-conical, downstream tapered valve closing body 7 of the valve needle 5 to cooperates a sealing seat.
- the valve closing body 7 with the Valve needle 5 integrally formed.
- the valve seat surface. 6 also be formed on a separate valve seat body, taken from the valve seat carrier 1 and with this connected is.
- valve needle 5 On the side facing away from the sealing seat of the Valve-closing body 7, the valve needle 5 a cylindrical portion 8, on the lateral surface thereof one or more spirally formed swirl grooves 9 are provided.
- the swirl grooves 9 are in radial Direction of the cylindrical portion. 8 enclosed valve seat carrier 1 completed and extend from a fuel chamber 10, which is part of axial longitudinal bore 4 of the valve seat carrier 1 is up to a Zumeßstelle 11 in the region of the valve seat surface. 6
- a swirl flow is generated, the turbulence and thus the atomization of the Fuel favors.
- the fuel chamber 10 is upstream by a Guide section 12 is limited and is over Outlet openings 13 with an axial cavity fourteenth connected, which the inflow-side area of the Valve needle 5 penetrates.
- the valve closing body 7 opposite end is the valve needle 5 with a Anchor 15 connected.
- the armature 15 acts with a magnetic coil 16 for closing and opening the Brennscherinspri tzventils 100 together.
- a staggered in the radial direction Spool 17 accommodates the winding of the magnetic coil 16.
- the stepped bobbin 17 surrounds an inner pole serving core 18 and with a step of larger diameter a non-magnetic intermediate part 19 at least partially axially.
- Both the armature 15 and the core 18 and the outer valve housing 20 are made of a ferromagnetic Material made.
- the anchor 15 and the Valve housing 20 becomes a closed magnetic Formed flux circuit, wherein the armature 15 in electrical Excitation of the magnetic coil 16 in the direction of the core 18th is pulled.
- the valve needle 5 against the by a return spring 21 caused restoring force moves, causing an opening of the fuel injector causes.
- the return spring 21 is supported on a Support plate 25 from.
- a supply cable 22 is used for electrical supply the solenoid 16 and is connected via a cable receptacle 23 with connected to the valve housing 20.
- a supply cable 22 is used for electrical supply the solenoid 16 and is connected via a cable receptacle 23 with connected to the valve housing 20.
- the valve seat carrier 1 has a recess 40 in the form a circumferential groove into which the valve housing 20th is crimped, whereby the valve housing 20 against the Valve seat carrier 1 is axially braced.
- the recess 40 is located on the outer circumference of the valve seat carrier 1 in a region in which the valve housing 20 with a lower end region is applied.
- the valve seat carrier 1 has a further circumferential groove 41 into which a sealing ring 42nd is used.
- the sealing ring 42 is connected to one of the Valve housing 20 formed surface 43 in the circumferential Groove 41 pressed to the interior of the fuel injector 100 to seal against the outside.
- a Hubeinstellin 46th provided, wherein the axial insertion depth of the Valve seat carrier 1 in the valve housing 20 through the Hubeinstellin 46 is adjusted.
- the core 18 of the fuel injection valve 100 has a Fuel nozzle 50, in which an internal thread 51 is trained.
- the supply of fuel via a fuel hose 52, which via a screw 53rd screwed into the internal thread 51 of the fuel nozzle 50 is.
- a Sealing element 54 is provided, which is made of fuel-resistant Material is made.
- valve housing 20 The crimp connection shown in FIG. 1 between Valve housing 20 and valve seat support 1 and alternative Embodiments of those will become apparent from the following figures described.
- Fig. 2 shows in a sectional view that in Fig. 1 with II designated section.
- the valve needle 5 is in the valve body 20 introduced the Hubeinstellin 46.
- the Hubeingstellin 46 is located on the stop surface 45th of the stop 44.
- the sealing ring 42 is introduced, the in this embodiment, one of the groove 41 adapted Has cross-sectional area.
- the valve seat carrier 1 is in introduced the valve housing 20, wherein the valve seat carrier 1 via the support plate 25 and the Hubeinstellfactor 46 the abutment surface 45 of the stopper 44 abuts.
- the Valve housing 20 has a radially outward Materialwulst 70, which has a mean axial distance d from the formed in the valve seat carrier 1 circumferential Recess 40 has.
- Inner surface 72 of the valve housing 20 in a cross section nose-shaped projection 73 according to FIG. 3 results.
- the nose-shaped projection 73 shown in Fig. 3 engages behind a contact surface 74 of the valve seat carrier 1, whereby a displacement of the valve seat carrier 1 opposite the valve housing 20 is prevented.
- Recesses 40 may be provided to z. B. a release of To allow flare connection.
- valve housing 20 After the valve seat carrier 1 to one through the Stop surface 45 of the stop 44 predetermined Penetration depth is guided in the valve housing 20 is in one between the valve seat carrier 1 and the valve housing 20 trained space 60 a spring element 61st brought in.
- the gap 60 is obtained by a stepped outer contour of the valve seat carrier 1.
- Das Spring element 61 is preferably as a spring ring or as Belleville spring formed.
- a support ring 62 In between the valve seat carrier 1 and valve housing 20 formed gap 60 is also introduced a support ring 62, via which the Spring element 61 is biased.
- the bias of the Spring element 61 is preferably effected by the action of a guided over the valve seat carrier 1 tubular Biasing tool, which on the support ring 62 at a radial inner annular surface 63 of the one Spring element 61 facing away from the end face 64 of the support ring 62nd attacks.
- the spring element 61 and the support ring 62 as shown in FIG. 5, arranged.
- the spring element 61 generates via the support ring 62 a axial tension between the valve housing 20 and the Valve seat carrier 1. It is, regardless of the shape of the beaded seal seat side portion 65 of Valve housing 20, through the support ring 62 to the spring element 61 a system on a spring element facing Face 75 given. It also exists without the use a support ring 62 the risk that during crimping the seal seat side portion 65 of the valve housing 20 the Spring element 61 is damaged or jammed.
- FIG. 6 7 and 8 is another Example of a non-inventive Fuel injection valve 100 shown.
- the show 6 and 7 each an excerpt axial section of the in Fig. 1 denoted by II section.
- Fig. 8 shows the designated in Fig. 7 with VIII section.
- the sealing seat side portion 65th the valve housing 20 has a greater wall thickness.
- the emerging flare can evenly over the entire circumference of the sealing seat side portion 65 of Valve housing 20 may be formed, or it may as in the illustrated embodiment, several flare segments 66a to 66e, with respect to a valve axis 67th circumferentially staggered to each other are arranged, wherein the Bördelsegmenten 66 a to 66 e, the valve housing 20 with the Valve seat support 1 each by a flanged Partial connection with release of non-flared Sections 68a to 68d is connected.
- This type of Bördelharm has the advantage that the occurring between the crimp segments 66a to 66e Tension by un-curled portions 68a to 68d are reduced compared to a circumferential curl and the occurrence of cracks in the sealing seat side portion 65 the valve housing 20 is avoided.
- the invention is not limited to those described Embodiments limited.
- Fuel injector 100 also as outward opening Fuel injection valve 100 to be executed.
- the crimp connection described is suitable between Valve housing 20 and valve seat support 1 for others Compounds, in particular the compound of Valve body 2 and core 18.
- the described elements in a remote manner Arrange against the examples shown.
- the spring element 61 on the side of the Stop surface 45 may be arranged, whereby the spring element 61 also described in FIGS. 1 to 3 Embodiments can be used.
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)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- einen axialen Schnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils;
- Fig. 2
- den Ausschnitt II in Fig. 1 vor Herstellung der erfindungsgemäßen Bördelverbindung;
- Fig. 3
- den Ausschnitt II in Fig. 1 nach Herstellung der erfindungsgemäßen Bördelverbindung;
- Fig. 4
- einen auszugsweisen axialen Schnitt durch ein Beispiel eines nicht erfindungsgemäßen Brennstoffeinspritzventils vor Herstellung der Bördelverbindung;
- Fig. 5
- das in Fig. 4 dargestellte Ausführungsbeispiel nach Herstellung der Bördelverbindung;
- Fig. 6
- einen auszugsweisen axialen Schnitt durch ein Beispiel eines nicht erfindungsgemäßen Brennstoffeinspritzventils vor Herstellung der Bördelverbindung;
- Fig. 7
- das in Fig. 6 dargestellte Ausführungsbeispiel nach Herstellung der Bördelverbindung; und
- Fig. 8
- einen Schnitt entlang der Linie VIII-VIII in Fig. 7.
Claims (7)
- Brennstoffeinspritzventil (100), insbesondere Einspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem mittels einer Ventilnadel (5) betätigbaren Ventilschließkörper (7), der mit einer festen Ventilsitzfläche (6) zu einem Dichtsitz zusammenwirkt, mit einem Anschlussteil (1) und mit einem das Anschlussteil (1) zumindest teilweise umschließenden Ventilgehäuse (20), das mit dem Anschlussteil (1) durch eine Verbindung verbunden ist, wobei das Anschlussteil (1) zumindest eine Aussparung (40) aufweist, in die das Ventilgehäuse (20) unter einer axialen Verspannung eingebracht ist,
dadurch gekennzeichnet, dass die Verbindung von Ventilgehäuse (20) und Anschlussteil (1) eine Bördelverbindung ist, bei der ein radial am äußeren Umfang des Ventilgehäuses (20) überstehender Materialwulst (70) in die zumindest eine Aussparung (40) eingebördelt ist. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, dass die Aussparung (40) als eine umlaufende Nut (40) am äußeren Umfang des Anschlussteils (1) ausgebildet ist. - Brennstoffeinspritzventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Bördelverbindung mehrere Bördelsegmente (66a-66e) aufweist, die bezüglich einer Ventilachse (67) umlaufend versetzt zueinander angeordnet sind und in denen das Ventilgehäuse (20) mit dem Anschlussteil (1) jeweils durch eine gebördelte Teilverbindung unter Freilassung von ungebördelten Abschnitten (68a-68d) verbunden ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass zwischen dem Ventilgehäuse (20) und dem Anschlussteil (1) eine Hubeinstellscheibe (46) vorgesehen ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass zwischen dem Ventilgehäuse (20) und dem Anschlussteil (1) ein Dichtring (42) vorgesehen ist. - Verfahren zum Herstellen eines Brennstoffeinspritzventils (100), insbesondere eines Einspritzventils für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem mittels einer Ventilnadel (5) betätigbaren Ventilschließkörper (7), der mit einer festen Ventilsitzfläche (6) zu einem Dichtsitz zusammenwirkt, mit einem Anschlussteil (1) und mit einem das Anschlussteil (1) zumindest teilweise umschließenden Ventilgehäuse (20), wobei das Anschlussteil (1) zumindest eine Aussparung (40) aufweist, in die das Ventilgehäuse (20) eingebracht wird, wobei in einem ersten Verfahrensschritt das Anschlussteil (I) in das Ventilgehäuse (20) bis zu einem vorgegebenen Anschlag (44) eingefügt wird,
gekennzeichnet durch den weiteren Verfahrensschritt des Einbördelns eines radial am äußeren Umfang des Ventilgehäuses (20) überstehenden Materialwulstes (70), der zur Erzeugung einer axialen Verspannung zwischen Ventilgehäuse (20) und Anschlussteil (1) einen mittleren Abstand (d) gegenüber der Aussparung (40) aufweist, in die Aussparung (40). - Verfahren nach Anspruch 6,
dadurch gekennzeichnet, dass eine axiale Einfügetiefe des Anschlussteils (1) in das Ventilgehäuse (20) durch zumindest eine Hubeinstellscheibe (46) eingestellt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19925984 | 1999-06-08 | ||
DE19925984A DE19925984A1 (de) | 1999-06-08 | 1999-06-08 | Brennstoffeinspritzventil und Verfahren zu dessen Herstellung |
PCT/DE2000/000487 WO2000075503A1 (de) | 1999-06-08 | 2000-02-22 | Brennstoffeinspritzventil und verfahren zu dessen herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1102931A1 EP1102931A1 (de) | 2001-05-30 |
EP1102931B1 true EP1102931B1 (de) | 2005-05-18 |
Family
ID=7910478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00909052A Expired - Lifetime EP1102931B1 (de) | 1999-06-08 | 2000-02-22 | Brennstoffeinspritzventil und verfahren zu dessen herstellung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1102931B1 (de) |
JP (1) | JP2003501584A (de) |
DE (2) | DE19925984A1 (de) |
WO (1) | WO2000075503A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0306008D0 (en) | 2003-03-15 | 2003-04-23 | Qinetiq Ltd | Optical device |
GB0306634D0 (en) | 2003-03-22 | 2003-04-30 | Qinetiq Ltd | Optical wavelength division multiplexer/demultiplexer device |
US20060215954A1 (en) | 2004-03-22 | 2006-09-28 | Jenkins Richard M | Optical routing device comprising hollow waveguides and mems reflective elements |
DE102017213454A1 (de) * | 2017-08-03 | 2019-02-07 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Dosierventils, Dosierventil |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2936332A1 (de) * | 1979-09-08 | 1981-03-26 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzventil und verfahren zur herstellung eines kraftstoffeinspritzventiles |
DE3540660A1 (de) * | 1985-11-16 | 1987-05-21 | Bosch Gmbh Robert | Elektromagnetisch betaetigbares kraftstoffeinspritzventil |
JP2515758B2 (ja) * | 1986-10-29 | 1996-07-10 | 株式会社日立製作所 | 電磁式燃料噴射弁装置の製造方法 |
US4887769A (en) * | 1987-06-26 | 1989-12-19 | Hitachi, Ltd. | Electromagnetic fuel injection valve |
US5236173A (en) * | 1992-03-11 | 1993-08-17 | Siemens Automotive L.P. | Armature bounce damper |
-
1999
- 1999-06-08 DE DE19925984A patent/DE19925984A1/de not_active Withdrawn
-
2000
- 2000-02-22 WO PCT/DE2000/000487 patent/WO2000075503A1/de active IP Right Grant
- 2000-02-22 JP JP2001501755A patent/JP2003501584A/ja active Pending
- 2000-02-22 EP EP00909052A patent/EP1102931B1/de not_active Expired - Lifetime
- 2000-02-22 DE DE50010343T patent/DE50010343D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2003501584A (ja) | 2003-01-14 |
EP1102931A1 (de) | 2001-05-30 |
DE50010343D1 (de) | 2005-06-23 |
DE19925984A1 (de) | 2000-12-14 |
WO2000075503A1 (de) | 2000-12-14 |
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