WO2009053196A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2009053196A1 WO2009053196A1 PCT/EP2008/062727 EP2008062727W WO2009053196A1 WO 2009053196 A1 WO2009053196 A1 WO 2009053196A1 EP 2008062727 W EP2008062727 W EP 2008062727W WO 2009053196 A1 WO2009053196 A1 WO 2009053196A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel injection
- injection valve
- magnetic circuit
- sleeve body
- circuit component
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 47
- 238000002347 injection Methods 0.000 title claims abstract description 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002347 wear-protection layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- F02M51/0614—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
- 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
- F02M51/0667—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 acting as a valve or having a short 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 relates to a fuel injection valve according to the preamble of the main claim.
- a fuel injection valve for fuel injection systems of internal combustion engines comprising an excitable actuator in the form of an electromagnetic circuit with a magnetic coil, an outer magnetic circuit component and a movable armature for actuating a valve closing body provided with a provided on a valve seat body valve seat cooperates, has.
- the fuel injection valve has no tubular core serving as a fuel inlet nozzle and inner pole, which is surrounded by the magnetic coil.
- the outer magnetic circuit component is designed pot-shaped, wherein the magnetic circuit component is installed in the valve so that it is slipped over the magnetic coil.
- the electromagnetic circuit is closed by a closure part, which is inserted from below into the magnetic circuit component.
- the movable armature is guided in the bobbin or in an inner opening of the closure part.
- the entire actuator is enclosed by a plastic extrusion, which also forms an inflow-side connecting piece.
- Fuel injection valve is characterized in that both the inlet-side connecting piece and serving as a valve seat carrier connecting part as deep-drawn sheet metal parts are executed.
- the sheet metal parts are formed by a deformation stress exceeding the yield value of their material and connected together by means of connecting pins to form a valve housing.
- the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that in a simple and cost-effective manner, a particularly compact structure in the region of the magnetic circuit and in the areas upstream and downstream of the magnetic circuit can be realized, so that a very small, handy injection valve arises.
- a simple structural solution is provided, with a closed dense coil space is provided for Spulenabdichtung by serving as the inner pole of the magnetic circuit disc-shaped cover part is inserted into an outer magnetic circuit component, wherein both the cover part and the magnetic circuit component with a thin-walled sleeve body are firmly connected , The sleeve body limits the coil space for the solenoid inside.
- the fuel injector is particularly favorable in the production of the items and the assembly.
- the very short magnetic circuit works very effectively with low losses and thus has the best functional properties.
- the construction according to the invention makes it possible to produce a fuel injection valve with a total length of ⁇ 30 mm.
- the sleeve body may be L-shaped or cross-sectionally be cylindrical, so that there are different attachment options with the lid part.
- Length variants of the fuel injection valve according to the invention are very easy to produce in large numbers by differently long and specifically shaped connecting pieces, valve seat carrier, valve needles and spacers.
- FIG. 1 shows a fuel injection valve in two variants of embodiments according to the invention in the region of the electromagnetic circuit.
- the electromagnetically operable valve in the form of an injector for fuel injection systems of mixture-compression spark-ignition internal combustion engines shown in FIG. 1 has an electromagnetic circuit with a solenoid coil 1 which does not surround a tubular core serving as a fuel inlet port and inner pole, as is common in such injectors , Rather, the magnetic coil 1 surrounds a thin-walled cylindrical sleeve body 2.
- a bobbin 3 receives a winding of the magnetic coil 1, wherein the bobbin 3 rests directly against an outer wall of the sleeve body 2.
- the bobbin 3 made of plastic passes directly into a mitgespritzten electrical connection plug 5, not shown in detail, via which the electrical contacting of the magnetic coil 1 takes place.
- the sleeve body 2 is arranged concentrically to a valve longitudinal axis 10, wherein the sleeve body 2 is either a metal non-magnetic intermediate part, which is made for example of stainless steel, or forms a magnetic throttle body in the magnetic circuit as a ferritic component.
- the bobbin 3 Surrounded is the bobbin 3 with the magnetic coil 1 of an outer cup-shaped Magnetic circuit component 11, which is part of the valve housing.
- a cover part 14 is inserted into the magnetic circuit component 11, which serves as the inner pole of the magnetic circuit.
- the lid part 14 is in turn connected to the sleeve body 2 by means of a second weld 15 tightly and firmly. With the cover part 14, the sleeve body 2 and the outer magnetic circuit component 11, a sealed, dense coil space is created in this way, which is interrupted only in the area of the electrical contacting of the magnetic coil 1 by a recess 16 in the cover part 14.
- the sleeve body 2 has an L-shape in cross-section, in which an annular collar 9 is bent away from the otherwise cylindrical course in the circumferential direction. Accordingly, the weld 15, 15a (left in FIG. 1) can be set on a horizontal end face 17 of the cover part 14.
- the cover part 14 extends as a largely flat disc.
- the cover part 14 is likewise disc-shaped, but formed with a cylindrical extension 8 which projects into the sleeve body 2, whereby it is possible to weld the weld seam to an axially parallel circumferential surface 18 of the extension 8 of the cover part 14 15, 15b to install.
- a thin-walled tubular connecting part Downstream of the magnetic circuit component 11 extends a thin-walled tubular connecting part, which is designed here as a valve seat carrier 19, which is fixedly connected to the magnetic circuit component 11 via a third weld 20.
- the component bottom 12 of the magnetic circuit component 11 has an annular extension 22 which protrudes from the magnetic circuit component 11 such that the weld seam 20 can be attached in this region without impairing the magnetic coil 1 or other components for connection to the valve seat carrier 19.
- an axially movable valve needle 21 is arranged in the valve seat carrier 19, at the downstream end 23 of the valve needle 21, a spherical valve closing body 24 made of metal or ceramic is provided. The actuation of the injection valve is electromagnetically.
- the electromagnetic circuit with the solenoid coil 1, the outer magnetic circuit member 11, the cover member 14 and an armature serves 27.
- the cup-shaped armature 27 is, for example formed integrally with a valve needle shaft 21a (right in Figure 1) or inserted at a stage 28 of the valve needle shaft 21a and there fixedly connected to this (left in Figure 1).
- the guide of the armature 27 during its axial movement takes place along the inner wall of the sleeve body 2.
- the solenoid 1 end facing away from the valve seat support 19 is a cylindrical valve seat body 29 having a fixed valve seat 30, mounted by welding tight.
- the valve seat body 29 is made of metal or ceramic and sealed by a sealing ring 31.
- the spherical valve closing body 24 of the valve needle 21 cooperates with the valve seat 30 of the valve seat body 29, which tapers frustoconically in the flow direction.
- the valve seat body 29 On its lower end face, the valve seat body 29 is provided with a spray hole disk 34 of flat design, for example, and of e.g. cup-shaped holding disc 35 fixed and tight by a z. B. connected by means of a laser weld.
- the spray perforated disk 34 at least one, for example, four ejection openings 39 formed by eroding or punching are provided.
- a plurality of flow-through grooves 40 are provided circumferentially in the valve seat body 29 in the region of a guide section.
- the arrangement of the cover part 14 in the outer magnetic circuit component 11 and on the sleeve body 2 is crucial for the stroke of the valve needle 21.
- the one end position of the valve needle 21 is fixed at non-energized solenoid coil 1 by the contact of the valve closing body 24 to the valve seat 30 of the valve seat body 29 while the other end position of the valve needle 21 results in energized solenoid coil 1 by the system of the armature 27 at the lower end of the cover part 14, which is provided there eg with a wear protection layer.
- the assembly of the fuel injection valve takes place in the region of the magnetic circuit in the following order. First, the sleeve body 2 and the lid part 14 are firmly connected to each other via the weld 15, 15a, 15b.
- the bobbin 3 is introduced with the magnetic coil 1 in the outer magnetic circuit component 11. Subsequently, these two modules are joined together until the cover member 14 is properly positioned in the magnetic circuit member 11.
- the sleeve body 2 is fixedly connected to the magnetic circuit component 11 on its component base 12 by means of the weld seam 13.
- the valve seat carrier 19 is then fastened to the magnetic circuit component 11 with the weld seam 20.
- the cover part 14 is firmly connected to a thin-walled connecting piece 41 by means of a fourth weld seam 38.
- the connecting piece 41 extends in a tubular manner and can be formed in a targeted manner with respect to the inner diameter via steps at different points, as can be seen in FIG. Variable lengths for the connecting pieces 41 can be used.
- the connecting piece 41 either engages in a groove 36 on the cover part 14 (on the left in FIG. 1) or sits on a shoulder 37 flush with the inner bore of the cover part 14 (on the right in FIG. 1).
- a setting 43 is fitted in a concentric with the valve longitudinal axis 10 extending flow bore 42 of the connecting piece 41, which serves to supply the fuel in the direction of the valve seat 30, except for the return spring 26, a setting 43 is fitted.
- the adjusting member 43 is used to adjust the spring bias of the voltage applied to the adjusting element 43 return spring 26, which in turn is supported with its opposite side of the armature 27, wherein an adjustment of the dynamic Abspritzmenge with the adjustment 43.
- a fuel filter 44 is integrated directly in the adjusting element 43.
- the fuel injection valve according to the invention is characterized by a particularly compact design in the region of the magnetic circuit as well as in the areas upstream and downstream of the magnetic circuit, so that a very small, handy injection valve is formed.
- the sleeve body 2 has, for example, a length of only about 3.5 mm.
- Both the connecting piece 41 and the valve seat carrier 19 are designed as thin-walled deep-drawn components which inflow the fuel injection valve and downstream with bent annular collar 45, 46 limit.
- These annular collars 45, 46 each form a boundary of an annular groove 47, 48, in each of which a sealing ring 49, 50 in the form of an O-ring for sealing the fuel injection valve to the outside (fuel rail, intake manifold) is introduced.
- FIG. 1 shows two variants of the fuel injection valve according to the invention. Length variants of the fuel injection valve are very easy to produce in large numbers by differently long and specifically shaped connecting piece 41, valve seat carrier 19, valve needles 21 and spacers 52, 53. A color coding of the fuel injectors is very easy on appropriately colored spacers 52, 53 possible. A plastic extrusion of the fuel injection valve can be omitted.
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)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010529327A JP5101705B2 (ja) | 2007-10-18 | 2008-09-24 | 燃料噴射弁 |
EP08804639A EP2212543B1 (de) | 2007-10-18 | 2008-09-24 | Brennstoffeinspritzventil |
BRPI0818668A BRPI0818668A2 (pt) | 2007-10-18 | 2008-09-24 | válvula de injeção de combustível |
US12/734,170 US20100263631A1 (en) | 2007-10-18 | 2008-09-24 | Fuel injector |
CN200880111882A CN101828026A (zh) | 2007-10-18 | 2008-09-24 | 燃料喷射阀 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007049945.2 | 2007-10-18 | ||
DE102007049945A DE102007049945A1 (de) | 2007-10-18 | 2007-10-18 | Brennstoffeinspritzventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009053196A1 true WO2009053196A1 (de) | 2009-04-30 |
Family
ID=40011250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/062727 WO2009053196A1 (de) | 2007-10-18 | 2008-09-24 | Brennstoffeinspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100263631A1 (de) |
EP (1) | EP2212543B1 (de) |
JP (1) | JP5101705B2 (de) |
CN (1) | CN101828026A (de) |
BR (1) | BRPI0818668A2 (de) |
DE (1) | DE102007049945A1 (de) |
WO (1) | WO2009053196A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2166220B1 (de) * | 2008-09-19 | 2012-02-29 | Continental Automotive GmbH | Einspritzventil |
DE102011080693A1 (de) | 2011-08-09 | 2013-02-14 | Robert Bosch Gmbh | Magnetanker |
DE102017207845A1 (de) * | 2017-05-10 | 2018-11-15 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
JP7322820B2 (ja) * | 2020-06-10 | 2023-08-08 | 株式会社デンソー | 弁装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487199A1 (de) | 1990-11-19 | 1992-05-27 | Ford Motor Company Limited | Kraftstoffeinspritzdüse |
EP0781915A1 (de) * | 1995-12-26 | 1997-07-02 | General Motors Corporation | Kraftstoffeinspritzventil |
DE19712922A1 (de) | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
EP1754882A1 (de) * | 2004-02-27 | 2007-02-21 | Keihin Corporation | Elektromagnetisches kraftstoffeinspritzventil und verfahren zu dessen herstellung |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8902129D0 (en) * | 1989-02-01 | 1989-03-22 | Lucas Ind Plc | Engine starting aid |
DE3905992A1 (de) * | 1989-02-25 | 1989-09-21 | Mesenich Gerhard | Elektromagnetisches hochdruckeinspritzventil |
DE4003227C1 (en) * | 1990-02-03 | 1991-01-03 | Robert Bosch Gmbh, 7000 Stuttgart, De | EM fuel injection valve for IC engine - has two overlapping parts welded together as narrowed section of one part |
US5201341A (en) * | 1991-03-19 | 1993-04-13 | Nippon Soken, Inc. | Electromagnetic type fluid flow control valve |
DE19547406B4 (de) * | 1995-12-19 | 2007-10-31 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE19629589B4 (de) * | 1996-07-23 | 2007-08-30 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE19712591A1 (de) * | 1997-03-26 | 1998-10-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils |
US6328231B1 (en) * | 1998-05-27 | 2001-12-11 | Siemens Automotive Corporation | Compressed natural gas injector having improved low noise valve needle |
US6186421B1 (en) * | 1999-12-06 | 2001-02-13 | Delphi Technologies, Inc. | Fuel Injector |
US6851622B2 (en) * | 2002-01-08 | 2005-02-08 | Siemens Vdo Automotive Corporation | Fuel injector having a ferromagnetic coil bobbin |
DE102005040361A1 (de) * | 2005-08-26 | 2007-03-01 | Robert Bosch Gmbh | Metallische Pressverbindung und Brennstoffeinspritzventil mit einer metallischen Pressverbindung |
DE102005040363B4 (de) * | 2005-08-26 | 2017-09-14 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
JP5210296B2 (ja) * | 2006-03-27 | 2013-06-12 | コンティネンタル オートモーティブ システムズ ユーエス, インコーポレイティッド | 燃料インジェクタアセンブリ、及び、燃料を加熱する方法 |
DE102007050817A1 (de) * | 2007-10-24 | 2009-04-30 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Ventil |
DE102007050819A1 (de) * | 2007-10-24 | 2009-04-30 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Ventil |
-
2007
- 2007-10-18 DE DE102007049945A patent/DE102007049945A1/de not_active Withdrawn
-
2008
- 2008-09-24 CN CN200880111882A patent/CN101828026A/zh active Pending
- 2008-09-24 US US12/734,170 patent/US20100263631A1/en not_active Abandoned
- 2008-09-24 BR BRPI0818668A patent/BRPI0818668A2/pt not_active IP Right Cessation
- 2008-09-24 WO PCT/EP2008/062727 patent/WO2009053196A1/de active Application Filing
- 2008-09-24 JP JP2010529327A patent/JP5101705B2/ja not_active Expired - Fee Related
- 2008-09-24 EP EP08804639A patent/EP2212543B1/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487199A1 (de) | 1990-11-19 | 1992-05-27 | Ford Motor Company Limited | Kraftstoffeinspritzdüse |
EP0781915A1 (de) * | 1995-12-26 | 1997-07-02 | General Motors Corporation | Kraftstoffeinspritzventil |
DE19712922A1 (de) | 1997-03-27 | 1998-10-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
EP1754882A1 (de) * | 2004-02-27 | 2007-02-21 | Keihin Corporation | Elektromagnetisches kraftstoffeinspritzventil und verfahren zu dessen herstellung |
Also Published As
Publication number | Publication date |
---|---|
EP2212543B1 (de) | 2012-12-19 |
EP2212543A1 (de) | 2010-08-04 |
JP5101705B2 (ja) | 2012-12-19 |
DE102007049945A1 (de) | 2009-04-23 |
BRPI0818668A2 (pt) | 2015-09-22 |
CN101828026A (zh) | 2010-09-08 |
JP2011501025A (ja) | 2011-01-06 |
US20100263631A1 (en) | 2010-10-21 |
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