EP1379777B1 - Brennstoffeinspritzventil mit einer zerstäuberscheibe - Google Patents
Brennstoffeinspritzventil mit einer zerstäuberscheibe Download PDFInfo
- Publication number
- EP1379777B1 EP1379777B1 EP02729866A EP02729866A EP1379777B1 EP 1379777 B1 EP1379777 B1 EP 1379777B1 EP 02729866 A EP02729866 A EP 02729866A EP 02729866 A EP02729866 A EP 02729866A EP 1379777 B1 EP1379777 B1 EP 1379777B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- opening
- injection valve
- fuel
- valve seat
- 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 44
- 238000002347 injection Methods 0.000 title claims description 24
- 239000007924 injection Substances 0.000 title claims description 24
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000004070 electrodeposition Methods 0.000 claims description 2
- 238000009713 electroplating Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding 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
- 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
- F02M61/1853—Orifice plates
-
- 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
- F02M61/166—Selection of particular materials
Definitions
- the invention is based on a fuel injection valve according to the preamble of claim 1.
- the fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that with him a very high atomization quality of a to be sprayed fuel is achieved.
- the Fuel injection valve according to the invention is in a It integrated atomizer disk, which functionally can be referred to as fan jet nozzle disk, a Fanning of fuel possible with the optimum Spray pictures especially for direct injection of Fuel can be generated in a combustion chamber.
- Consequence can at an injection valve a Internal combustion engine u.a. the exhaust emission of Internal combustion engine reduces and also a reduction of fuel consumption.
- the atomizer disk with at least one radially extending opening area provided, which ends at a baffle and from the the fuel largely due to the slot arrangement perpendicular to the flow direction in the opening area is fanned out.
- opening area in the Provide atomizer disk.
- Opening areas for example, a desired oblique sprayed off spray can be generated.
- a uniform very atomised spray composed of several Fan beams, to be delivered.
- the atomizer disk it is particularly advantageous to use the atomizer disk to produce the so-called multilayer electroplating.
- by virtue of their metallic training are such atomizer discs very unbreakable and easy to assemble.
- the application of Multilayer electroplating allows an extremely large Freedom of design, as the contours of the opening areas in the atomizer disk are freely selectable. Especially in the Compared to silicon wafers where due to the Crystal axes achievable contours are strictly predetermined (Truncated pyramids), this flexible design is very advantageous.
- the metallic deposition has especially compared to Production of silicon wafers has the advantage of a very great variety of materials.
- the most different metals with their different magnetic properties and Hardening can be used to manufacture the atomizing disks microplating used.
- FIG. 1 shows a Fuel injector in section
- Figure 2 shows the neck II in Figure 1 in the region of the valve seat and the fan jet disk according to the invention
- Figure 3 a Section along the line III-III in Figure 2 by a upper layer or layer of the fan jet nozzle disk.
- Electromagnetically actuated valve in the form of a Injector for fuel injection systems of mixture-compression, spark-ignited internal combustion engines has one of a magnetic coil 1 at least partially surrounded, serving as inner pole of a magnetic circuit, tubular, largely hollow cylindrical core 2.
- the Fuel injector is particularly suitable as High pressure injector for direct injection of Fuel in a combustion chamber of an internal combustion engine.
- stepped bobbin 3 made of plastic takes up a winding of the magnetic coil 1 and allows in conjunction with the core 2 and an annular, non-magnetic, partially surrounded by the magnetic coil 1 Intermediate part 4 a particularly compact and short design of the injection valve in the region of the magnetic coil 1.
- a continuous longitudinal opening. 7 provided, which extends along a valve longitudinal axis. 8 extends.
- the core 2 of the magnetic circuit also serves as Fuel inlet, wherein the longitudinal opening 7 a Fuel supply channel represents.
- an external metal (eg ferritic) housing part 14 which is used as external pole or outer guide element closes the magnetic circuit and the Magnet coil 1 at least in the circumferential direction completely surrounds.
- a fuel filter 15 is provided for the Provides filtering out of such fuel components that due to their size in the injector blockages or Can cause damage.
- the upper housing part 14 is closed tightly and firmly lower tubular housing part 18, z. B. an axial movable valve member consisting of an armature 19 and a rod-shaped valve needle 20 and a elongated valve seat carrier 21 encloses or receives.
- the two housing parts 14 and 18 are z. B. with a circumferential weld firmly connected.
- the seal between the housing part 18 and the Valve seat carrier 21 is z. B. by means of a sealing ring 22nd
- Valve seat carrier 21 a With its lower end 25, which also at the same time the downstream completion of the entire Represents fuel injector surrounds the Valve seat carrier 21 a in a through hole 24th fitted disc-shaped valve seat member 26 with a e.g. downstream truncated cone tapered Valve seat surface 27.
- Valve needle 20 disposed at its downstream end a valve closing portion 28 has.
- conically tapering Valve closing portion 28 acts in a known manner with the Valve seat surface 27 together.
- Downstream of Valve seat surface 27 follows the valve seat member 26 a Atomizer disk 30, which in the following due to their special function as a so-called fan jet nozzle disc is designated and the example by means of Multilayer electroplating is made and two on each other comprising deposited metallic layers.
- the actuation of the injection valve takes place in known Way e.g. electromagnetically.
- the electromagnetic circuit with the magnetic coil 1, the core 2, the housing parts 14 and 18 and the armature 19.
- the valve needle 20 during its axial movement with the armature 19 along the valve longitudinal axis 8 serves on the one hand in the Valve seat carrier 21 on the armature 19 facing the end provided guide opening 34 and on the other hand upstream of the valve seat member 26 arranged disc-shaped guide member 35 with a dimensionally accurate Guide opening 36.
- the electromagnetic circuit can also be another excitable actuator, such as a piezostack, in used a comparable fuel injection valve be or actuating the axially movable valve member done by a hydraulic pressure or servo pressure.
- a piezostack in used a comparable fuel injection valve be or actuating the axially movable valve member done by a hydraulic pressure or servo pressure.
- Pressed or screwed adjusting sleeve 38 is used for Adjustment of spring preload via a centering piece 39 with its upstream side of the adjusting 38th adjacent return spring 33, which is with her opposite side supported on the armature 19.
- In the anchor 19 are one or more bore-like flow channels 40 provided by the fuel from the longitudinal opening. 7 in the core 2 from over downstream of the flow channels 40th trained connecting channels 41 near the guide opening 34 in the valve seat carrier 21 into the passage opening 24th can get.
- the stroke of the valve needle 20 is determined by the mounting position of the Valve seat member 26 predetermined.
- An end position of Valve needle 20 is in non-energized solenoid 1 by the system of the valve closing portion 28 at the Valve seat surface 27 set while the other End position of the valve needle 20 when the solenoid coil 1 by the attachment of the armature 19 at the downstream Front side of the core 2 results.
- the electrical contacting of the magnetic coil 1 and thus their excitement via contact elements 43, the outside the bobbin 3 with a Plastic extrusion 44 are provided and continue as Connecting cable 45 run.
- the plastic extrusion 44 can also be determined by other components (eg housing parts 14 and 18) of the fuel injector.
- a first paragraph 49 in the through hole 24 serves as Bearing surface for a e.g. helical compression spring 50.
- a second stage 51 is an enlarged installation space for the three disk-shaped elements 35, 26 and 30 created.
- the valve needle 20 enveloping compression spring 50th clamped the guide member 35 in the valve seat carrier 21, there against her with her paragraph 49 opposite side the guide element 35 presses ..
- Downstream of the Valve seat surface 27 is in the valve seat member 26 a central outlet opening 53 introduced by the at opened valve on the valve seat surface 27th along flowing fuel flows to subsequently in a first layer 58 of the fan jet nozzle disk 30 to enter.
- the fan jet nozzle disk 30 is located, for example, in FIG a recess 54 of a disc-shaped retaining element 55 before, wherein the holding member 55 fixed to the valve seat carrier 21 e.g. by welding, gluing or by jamming connected is.
- a central Outlet opening 56 is formed through which the fanned Fuel leaves the fuel injector.
- FIG. 2 shows the detail II in FIG Clarification of the geometry of the fan jet nozzle disk 30.
- Figure 3 is a sectional view taken along the line III-III in Figure 2, to the contours of the opening geometry within the fan jet nozzle disk 30. To closer to the flow of the fan jet nozzle disk 30 In addition, in FIG Outlet opening 53 of the valve seat member 26 located.
- the fan jet nozzle disk 30 is formed of two galvanically deposited layers, layers or Layers, thus axially in the installed state follow one another.
- the two layers 58 and 59 of Fan jet nozzles 30 have e.g. the same Outside diameter on.
- the first layer 58 is at least one radially extending Opening portion 61 is provided, which over the entire axial Thickness of this layer 58 runs and from the bottom End face 62 of the valve seat member 26 is limited.
- Each channel-like opening portion 61 ends at a baffle 63, to which the radial running flow hits.
- each baffle 63 closes in downstream direction in the lower layer 59 a slit-shaped outlet opening 64 at.
- the radially outside lying wall 65 of each outlet opening 64 extends aligned with the respective baffle 63 and thus provides ultimately their downstream extension.
- the slit-shaped outlet openings 64 have a larger Length L on as the width 1 of the opening into it Opening area 61. As shown in Fig. 3, L> 1.
- outlet openings 64 in their longitudinal extent run largely perpendicular to the opening portions 61, can meet the impact wall 63 striking flow in the right angle to it according to the size of the Fan outlet 64 and the fuel will be fine atomized in a fan beam geometry.
- the thickness of the lower layer 59 and thus the axial length of Outlet openings 64 are decisive for the Beam fanning and deflection.
- About the Cross-sectional areas of the opening portions 61 can be the Adjust the homogeneity of the fan beam to be sprayed.
- the beam shape is changeable.
- rectilinear outlet openings 64 are slotted arcuate outlet openings 64 conceivable.
- the Fan jet nozzle disk 30 may also be used in contrast to in Figure 1 shown installation variant obliquely inclined to Valve longitudinal axis 8 be attached, so that the Fuel spray at an angle ⁇ to the valve longitudinal axis. 8 is hosed.
- Fan jet nozzle disc 30 stamping and embossing technology, erodiertechnisch or etching technology produce.
Description
- Schichten mit über die Scheibenfläche konstanter Dicke,
- durch die tiefenlithographische Strukturierung weitgehend senkrechte Einschnitte in den Schichten, welche die jeweils durchströmten Hohlräume bilden (fertigungstechnisch bedingte Abweichungen von ca. 3° gegenüber optimal senkrechten Wandungen können auftreten),
- gewünschte Hinterschneidungen und Überdeckungen der Einschnitte durch mehrlagigen Aufbau einzeln strukturierter Metallschichten,
- Einschnitte mit beliebigen, weitgehend achsparallele Wandungen aufweisenden Querschnittsformen,
- einteilige Ausführung der Fächerstrahldüsenscheibe, da die einzelnen Metallabscheidungen unmittelbar aufeinander erfolgen.
Claims (8)
- Brennstoffeinspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine, mit einer Ventillängsachse (8), mit einem Aktuator (1, 2, 14, 18, 19), mit einem beweglichen Ventilteil (20), das zum Öffnen und Schließen des Ventils mit einem festen Ventilsitz (27) zusammenwirkt, der an einem Ventilsitzelement (26) ausgebildet ist, und mit einer stromabwärts des Ventilsitzes (27) angeordneten Zerstäuberscheibe (30), wobei die Zerstäuberscheibe (30) eine erste stromaufwärtige Lage (58) hat, in die Brennstoff zentral einströmbar ist und in der wenigstens ein radial verlaufender Öffnungsbereich (61) vorgesehen ist, der radial nach außen vom Brennstoff durchströmbar ist und der mit einer Prallwandung (63) endet wobei sich stromabwärts der Prallwandung (63) in einer zweiten stromabwärtigen Lage (59) der Zerstäuberscheibe (30) eine schlitzförmige Austrittsöffnung (64) anschließt, dadurch gekennzeichnet, dass die Längserstreckung der schlitzförmigen Austrittsöffnung (64) weitgehend senkrecht zu dem Öffnungsbereich (61) verläuft und die Länge (L) der Austrittsöffnung (64) größer ist als die Breite (1) des in sie mündenden Öffnungsbereichs (61).
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass der wenigstens eine Öffnungsbereich (61) kanalartig verläuft und von einer unteren Stirnfläche (62) des Ventilsitzelements (26) und von einer Oberfläche (60) der zweiten Lage (59) begrenzt wird.
- Brennstoffeinspritzventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die radial außen liegende Wandung (65) der Austrittsöffnung (64) zumindest im Bereich der Prallwandung (63) fluchtend zu dieser verläuft und somit deren stromabwärtige Verlängerung darstellt.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die wenigstens eine Austrittsöffnung (64) geradlinig oder bogenförmig verläuft.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass vier Öffnungsbereiche (61) in der Zerstäuberscheibe (30) mit jeweils einer Austrittsöffnung (64) vorgesehen sind.
- Brennstoffeinspritzventil nach Anspruch 5, dadurch gekennzeichnet, dass die Öffnungsbereiche (61) in der ersten Lage (58) eine kreuzförmige Öffnungskontur bilden.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zerstäuberscheibe (30) mittels galvanischer Metallabscheidung herstellbar ist.
- Brennstoffeinspritzventil nach Anspruch 7, dadurch gekennzeichnet, dass die zwei Lagen (58, 59) der Zerstäuberscheibe (30) als zwei metallisch abgeschiedene Schichten aufeinander aufgebaut sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10118273 | 2001-04-12 | ||
DE10118273A DE10118273A1 (de) | 2001-04-12 | 2001-04-12 | Brennstoffeinspritzventil |
PCT/DE2002/001333 WO2002084112A1 (de) | 2001-04-12 | 2002-04-10 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1379777A1 EP1379777A1 (de) | 2004-01-14 |
EP1379777B1 true EP1379777B1 (de) | 2005-03-30 |
Family
ID=7681350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02729866A Expired - Lifetime EP1379777B1 (de) | 2001-04-12 | 2002-04-10 | Brennstoffeinspritzventil mit einer zerstäuberscheibe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1379777B1 (de) |
JP (1) | JP4083023B2 (de) |
DE (2) | DE10118273A1 (de) |
WO (1) | WO2002084112A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004049281A1 (de) * | 2004-10-09 | 2006-04-20 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004049280A1 (de) * | 2004-10-09 | 2006-04-13 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102005023793B4 (de) * | 2005-05-19 | 2012-01-12 | Ulrich Schmid | Vorrichtung zur Drallerzeugung in einem Kraftstoffeinspritzventil |
JP4618262B2 (ja) * | 2007-03-16 | 2011-01-26 | 三菱電機株式会社 | 燃料噴射弁 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19607277A1 (de) * | 1995-03-29 | 1996-10-02 | Bosch Gmbh Robert | Lochscheibe, insbesondere für Einspritzventile |
DE19703200A1 (de) * | 1997-01-30 | 1998-08-06 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19724075A1 (de) * | 1997-06-07 | 1998-12-10 | Bosch Gmbh Robert | Verfahren zur Herstellung einer Lochscheibe für ein Einspritzventil und Lochscheibe für ein Einspritzventil und Einspritzventil |
KR100372992B1 (ko) * | 1998-06-22 | 2003-02-25 | 가부시키가이샤 히타치세이사쿠쇼 | 통내 분사형 내연 기관 및 내연 기관의 제어 방법, 연료분사 밸브 |
-
2001
- 2001-04-12 DE DE10118273A patent/DE10118273A1/de not_active Withdrawn
-
2002
- 2002-04-10 EP EP02729866A patent/EP1379777B1/de not_active Expired - Lifetime
- 2002-04-10 DE DE50202627T patent/DE50202627D1/de not_active Expired - Lifetime
- 2002-04-10 WO PCT/DE2002/001333 patent/WO2002084112A1/de active IP Right Grant
- 2002-04-10 JP JP2002581831A patent/JP4083023B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1379777A1 (de) | 2004-01-14 |
WO2002084112A1 (de) | 2002-10-24 |
DE10118273A1 (de) | 2002-10-17 |
DE50202627D1 (de) | 2005-05-04 |
JP4083023B2 (ja) | 2008-04-30 |
JP2004518909A (ja) | 2004-06-24 |
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