EP1228306A1 - Fuel-injection valve comprising a swirl element - Google Patents
Fuel-injection valve comprising a swirl elementInfo
- Publication number
- EP1228306A1 EP1228306A1 EP01982155A EP01982155A EP1228306A1 EP 1228306 A1 EP1228306 A1 EP 1228306A1 EP 01982155 A EP01982155 A EP 01982155A EP 01982155 A EP01982155 A EP 01982155A EP 1228306 A1 EP1228306 A1 EP 1228306A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swirl
- fuel injection
- injection valve
- fuel
- outlet opening
- 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.)
- Granted
Links
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
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
-
- 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
-
- 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 injector according to the preamble of claim 1.
- Fuel injection valves provide swirl-generating elements with which a swirl component is impressed on the fuel to be sprayed, by means of which the fuel is better atomized and breaks down into smaller droplets. It is already known to arrange the swirl-generating means upstream, that is, in front of the valve seat and, on the other hand, downstream, that is, behind the valve seat.
- Swirl-generating means which are arranged downstream of the valve seat, are usually designed in such a way that fuel is introduced into the radially outer ends of swirl channels, which fuel is then guided radially inward to a swirl chamber, into which it enters with a tangential component. The swirling fuel then emerges from the swirl chamber.
- a fuel injector is already known from DE-OS 198 15 775, in which a swirl disk is provided downstream of the valve seat and has such a flow profile.
- Examples of fuel injection valves with swirl elements upstream of the valve seat are shown, for example, in WO 98/35159 or DE-OS 197 36 682.
- the swirl elements are basically designed such that the fuel is supplied radially from the outside in the direction of the central valve seat.
- a fuel injector is already known from DE-OS 195 27 626, in which a nozzle plate is provided downstream of the valve seat.
- This nozzle plate has a multiplicity of swirl depressions arranged in the manner of a paddle wheel, which are distributed in a ring over the nozzle plate.
- Each individual swirl recess has an inlet area from which the fuel is transported with a partially radial component in the direction of an annular gap with a larger diameter.
- the fuel injector according to the invention with the characterizing features of claim 1 has the advantage that a very high atomization quality of a fuel to be sprayed off is achieved with it. As a consequence, such an injection valve of an internal combustion engine can the exhaust gas emission of the internal combustion engine is reduced and a reduction in fuel consumption can also be achieved.
- the swirl element can advantageously be fastened to the fuel injector in a very simple and reliable manner. Due to the central flow of the swirl element, the required fastening points are located far away from the valve seat, the subsequent outlet opening and the inlet area of the swirl element. Such an arrangement enables a reduction in the dead volume in the inflow behind the valve seat. The risk of so-called splashing in motor operation is reduced so much since little or no fuel is stored in the inflow area.
- the spray geometry which is radially further outward due to the central inflow of the swirl ducts, can be advantageous under certain installation conditions, in particular when using the fuel injector for direct injection into the combustion chamber of a spark-ignited internal combustion engine, since the risk of coking of the spray geometry is reduced in this way.
- the swirl element can be produced inexpensively in a particularly simple manner.
- a particular advantage is that the swirl elements can be produced in a reproducible manner extremely precisely in large quantities at the same time (high batch capability).
- the upstream layer represents a cover layer with a central inlet opening, which completely covers the swirl channels of a middle swirl generation layer.
- the swirl generation layer is formed by a plurality of material areas which, on account of their contouring and their geometrical position relative to one another, define the contours of the swirl channels. Thanks to the electroplating process, the individual layers are built on top of one another without separating or joining points so that they are completely homogeneous Represent material. In this respect, "layers" are to be understood as a mental aid.
- FIG. 1 shows a partially illustrated fuel injector in section
- FIG. 2 shows a plan view of a swirl element shown in FIG. 1 along the line II
- FIG. 3 shows a second exemplary embodiment of a fuel injector with a swirl element having an inclined outlet opening
- FIG. 4 shows a further exemplary embodiment of a swirl element 5 shows a longitudinal section through a swirl element produced by means of multilayer electroplating
- FIG. 6 shows a cross-sectional view of a middle swirl generation layer of the swirl element shown in FIG. 5, FIG.
- FIG. 7 shows a second cross-sectional view of a middle swirl generation layer of a swirl element produced by means of multilayer electroplating
- FIG 8 shows a third cross-sectional view of a middle swirl generation layer of a swirl element produced by means of multilayer electroplating
- FIG. 9 shows a further exemplary embodiment of a part of it Provided fuel injector with a swirl element.
- the injector has one tubular valve seat support 1, in which a longitudinal opening 3 is formed concentrically with a longitudinal valve axis 2.
- a valve needle 5 is arranged in the longitudinal opening 3 and has a valve closing section 7 at its downstream end.
- the injection valve is actuated in a known manner, for example electromagnetically.
- a schematically indicated electromagnetic circuit with a magnet coil 10, an armature 11 and a core 12 is used for the axial movement of the valve needle 5 and thus for opening against the spring force of a return spring (not shown) or closing the injection valve.
- the armature 11 is connected to the valve closing section 7 opposite end of the valve needle 5 by z.
- another excitable actuator such as a piezo stack can be used in a comparable fuel injection valve or the actuation of the axially movable valve part can be carried out by means of hydraulic pressure or servo pressure.
- a guide opening 13 of a guide element 14 serves to guide the valve needle 5 during the axial movement.
- the guide element 14 has at least one flow opening 15 through which fuel can flow out of the longitudinal opening 3 in the direction of a valve seat.
- The, for example, disk-shaped guide element 14 is, for example, firmly connected to a valve seat body 16 by means of a circumferential weld seam.
- the valve seat body 16 is tightly mounted, for example, at the end of the valve seat carrier 1 facing away from the core 12 by welding.
- the position of the valve seat body 16 determines the size of the stroke of the valve needle 5, since the one end position of the valve needle 5 when the magnet coil 10 is not energized is fixed by the valve closing section 7 resting on a valve seat surface 22 of the valve seat body 16 that tapers conically downstream.
- the other end position of the valve needle 5 is determined when the solenoid 10 is excited, for example by the armature 11 resting on the core 12.
- the path between these two end positions of the valve needle 5 thus represents the stroke.
- the valve closing section 7 interacts with the frustoconical valve seat surface 22 of the valve seat body 16 to form a sealing seat. Downstream of the valve seat surface 22, the valve seat body 16 has a central outlet opening 23.
- a e.g. disc-shaped swirl element 25 is arranged, which is in turn attached to the valve seat body 16, for example, by welding.
- the swirl element 25 has a single central inlet region 27 which immediately follows the outlet opening 23 of the valve seat body 16 and which lies in the region of the valve longitudinal axis 2. Starting from this inlet area 27, at least one swirl channel 28 extends radially outwards, which opens there into an outlet opening 29 of the swirl element 25.
- the fuel injection valve is designed in particular as a so-called multi-hole valve (FIG. 4), which is particularly suitable for injecting fuel directly into a combustion chamber (not shown).
- fuel injectors for the direct injection of fuel into a combustion chamber are highly susceptible to coking.
- the fuel injection valve according to the invention is to a large extent to prevent coking deposits from clogging the combustion chamber in the area of the outlet openings 29 and thus significantly changing the injection quantities over the life of the valve.
- the swirl element 25 is a disk-shaped component which is designed as a spray orifice disk and which is formed in two layers at least in the region of the opening structure 27, 28, 29.
- the upper position facing the valve seat body 16 contains the central inlet region 27 and the at least one swirl channel 28, while the lower layer of the opening structure is formed by the outlet opening 29.
- the swirl element 25 is produced, for example, from a metal sheet, the opening contours being introduced by means of stamping, embossing, eroding and / or laser drilling.
- FIG. 2 shows a plan view of the swirl element 25 shown in FIG. 1 along the line II. It is clear that the swirl channel 28 extends radially outward from the central inlet region 27 in order to open tangentially into a swirl chamber 30 which is offset from the longitudinal axis 2 of the valve.
- the opening contour of the upper layer of the swirl element 25 thus largely corresponds to a 6-shape or 9-shape.
- the edges of the inlet area 27, of the swirl duct 28 and of the swirl chamber 30 are chamfered, for example, so that a notched trough or v-shaped geometry can result for the swirl duct 28, which is therefore an inverse roof ridge shape.
- the swirl channel 28 opens tangentially into the swirl chamber 30 and the outlet opening 29 is arranged centrally to the swirl chamber 30, by which it is surrounded in a ring, the outlet opening 29 running parallel to the longitudinal axis 2 of the valve is offset with respect to the swirl channel 28. In this way, a swirl component is impressed on a fuel flowing through the swirl chamber 30.
- FIGS. 3 and 4 show two further exemplary embodiments of swirl elements 25 according to the invention.
- FIG. 3 shows a second exemplary embodiment of a fuel injection valve with a swirl element 25 having an oblique outlet opening 29 in the same view as FIG. 1, so that the same reference numerals are used for matching components.
- the outlet opening 29 has an angle ⁇ to the longitudinal valve axis 2, the outlet opening 29 being inclined in such a way that it is directed toward the longitudinal valve axis 2 in the spraying direction.
- the direction of inclination can also be reversed; A skewed configuration of the outlet opening 29 is also possible.
- FIG. 4 shows a further embodiment of a swirl element 25 with three swirl channels 28 in a plan view. From the central inlet area 27 there are now three swirl channels 28 which, for example, are offset radially outwards by 120 ° to one another. At their ends, each swirl channel 28 opens into a swirl chamber 30, from which the swirled fuel in turn enters an outlet opening 29 and can be sprayed from there.
- the swirl channels 28 can also be distributed unevenly over the circumference.
- the outlet openings 29 can be used to fill the combustion chamber with fuel as desired For example, be aligned at different angles to the longitudinal axis 2 of the valve, with, for example, all the outlet openings 29 moving away from the longitudinal axis 2 of the valve in the downstream direction or oriented towards it.
- FIGS. 5 to 9 show exemplary embodiments of swirl elements 25 which are flowed through and flowed through according to the same principle as in the examples according to FIGS. 1 to 4, but are produced by means of the so-called multilayer electroplating.
- FIG. 5 shows a longitudinal section through a first swirl element 25 produced by means of multilayer electroplating.
- the disk-shaped swirl element 25 is formed, e.g. of three galvanically separated levels, layers or layers, which thus follow one another axially when installed.
- the three layers of swirl element 25 are referred to below according to their function with inlet layer 35, swirl generation layer 36 and bottom layer 37.
- the upper inlet layer 35 has a larger outer diameter than the swirl generation layer 36 and the bottom layer 37.
- Such an outer contour is expedient for simple and safe installation of the swirl element 25 in a receiving opening 39 of a receiving part 40 (FIG. 9).
- FIG. 6 shows a cross-sectional view of the middle swirl generation layer 36 of the swirl element 25 shown in section in FIG.
- the inner material areas 43 are kinked like wings or are arch-shaped or parabolic, so that the swirl channels 28 result in a similarly kinked shape as spaces between the material areas 43.
- the swirl channels 28 are flowed outwards from the central area 42, where the fuel emerging from them, due to the channel design, enters a ring-shaped flow area 44 with swirl, partially bounces against the inner wall of an outer material area 43 ⁇ and is set in rotation.
- the annular flow region 44 is therefore surrounded on the outside by the likewise annular material region 43.
- an annular gap in the lower bottom layer 37 adjoins the annular flow region 44 of the middle swirl generation layer 36 as the outlet opening 29.
- the outlet opening 29 is thus offset to the outside from the central inlet region 27 of the swirl element 25.
- FIGS. 7 and 8 show two further cross-sectional views of a central swirl generation layer 36 of a swirl element 25 produced by means of multilayer electroplating.
- these two swirl elements 25 three inner material regions 43 are provided in the middle swirl generation layer 36, which in turn are deposited in such a way that the swirl channels 28 formed between them are hook-shaped and a swirl component is impressed on a fuel flowing through them.
- the outer annular material region 43 ⁇ is, for example, hexagonal on its inside, so that the annular flow region 44 is delimited by this hexagonal wall.
- the inner material areas 43 with their outwardly facing boundary surfaces 45 run parallel to the wall sections of the hexagonal inside of the outer material area 43 ⁇ .
- the material areas 43 of the swirl generation layer 36 of the swirl element 25 according to FIG. 8 are shaped such that in each case approximately the center of each individual outwardly facing boundary surface 45 of the material areas 43 is opposite a corner point of the hexagonal inside of the outer material area 43 ⁇ .
- FIG. 9 shows a further exemplary embodiment of a partially illustrated fuel injection valve with a swirl element 25.
- This swirl element 25 has a considerable difference compared to all of the previously described exemplary embodiments.
- the bottom layer 37 of the swirl element 25 is designed with a smaller outside diameter than the outside diameter of the swirl generating layer 36 lying above it and has no outlet opening 29. Instead, an inwardly projecting collar 46 is provided on the receiving part 40 at the level of the bottom layer 37 of the swirl element 25. This collar 46 engages under the swirl element 25 on the
- Swirl generation layer 36 and extends dimensionally close to the bottom layer 37. Between the bottom layer 37 and the collar 46 remains a narrow gap, which forms the outlet opening 29 as an annular gap.
- the fastening options shown in FIG. 9 of the receiving part 40 and of the swirl element 25 in the receiving part 40 with (laser) weld seams can accordingly also be used for fastening the swirl elements 25 of FIGS. 5 to 8.
- the width of the outlet opening 29 in the form of an annular gap can be adjusted such that the outlet opening 29 represents the throttling cross section in relation to the cross section of the swirl channels 28.
- the resulting flow build-up in the flow region 44 and the outlet opening 29 leads to the speed field being homogenized over the circumference of the outlet opening 29. In this respect, local fuel accumulations and streaks can be avoided.
- the width of the annular gap outlet opening 29 can be increased compared to the swirl duct widths, so that fuel accumulations are caused in the regions of the swirl ducts opening into the flow region 44.
- the annular gap instead of the annular gap as the outlet opening 29, completely differently shaped outlet openings 29 can also be provided.
- the swirl elements 25 according to FIGS. 5 to 9 are built up in several metallic layers, for example by galvanic deposition (multilayer electroplating). Due to the deep lithographic, galvanotechnical production, there are special features in the contouring, some of which are summarized below:
- the starting point for the process is a flat and stable carrier plate, which, for. B. can consist of metal (titanium, steel), silicon, glass or ceramic.
- At least one auxiliary layer is optionally first applied to the carrier plate. This is, for example, an electroplating start layer (e.g. TiCuTi, CrCuCr, Ni), which is required for electrical conduction for the later micro-electroplating.
- the application of the auxiliary layer happens z. B. by sputtering or by electroless metal deposition.
- a photoresist photoresist
- the thickness of the photoresist should correspond to the thickness of the metal layer which is to be realized in the subsequent electroplating process, that is to say the thickness of the lower bottom layer 37 of the swirl element 25.
- the resist layer can consist of one or more layers of a photostructurable film or a liquid resist
- the metal structure to be realized is to be transferred inversely in the photoresist using a photolithographic mask.
- One possibility is to apply the photoresist directly over the mask using UV exposure
- PCB imagesetter or semiconductor imagesetter to expose (UV depth lithography) and then develop.
- the negative structure ultimately created in the photoresist to the later layer 37 of the swirl element 25 is galvanically filled with metal (eg Ni, NiCo, NiFe, NiW, Cu) (metal deposition). Due to the electroplating, the metal fits closely to the contour of the negative structure, so that the specified contours are reproduced in it in true-to-form form.
- metal eg Ni, NiCo, NiFe, NiW, Cu
- the steps from the optional application of the auxiliary layer must be repeated according to the number of layers desired, so that two (lateral overgrowth) or three electroplating steps are carried out with a three-layer swirl element 25. For layers one - 16 -
- Swirl elements 25 can also be used different metals, but these can only be used in a new electroplating step.
- the remaining photoresist is removed from the metal structures by wet-chemical stripping.
- the swirl elements 25 can be detached from the substrate and separated.
- the sacrificial layer is selectively etched away from the substrate and swirl element 25, as a result of which the swirl elements 25 can be lifted off the carrier plate and separated.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10048935A DE10048935A1 (en) | 2000-10-04 | 2000-10-04 | Fuel injector |
DE10048935 | 2000-10-04 | ||
PCT/DE2001/003711 WO2002029244A1 (en) | 2000-10-04 | 2001-09-27 | Fuel-injection valve comprising a swirl element |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1228306A1 true EP1228306A1 (en) | 2002-08-07 |
EP1228306B1 EP1228306B1 (en) | 2006-03-15 |
Family
ID=7658533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01982155A Expired - Lifetime EP1228306B1 (en) | 2000-10-04 | 2001-09-27 | Fuel-injection valve comprising a swirl element |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030116650A1 (en) |
EP (1) | EP1228306B1 (en) |
JP (1) | JP2004510915A (en) |
DE (2) | DE10048935A1 (en) |
WO (1) | WO2002029244A1 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10154237A1 (en) * | 2001-11-07 | 2003-05-15 | Steag Microparts Gmbh | Manual sputterer, to spray liquid droplets on to a surface, has a spring acting on a piston with a manual release, to spray a portion of the stored liquid with a controlled droplet size |
US20060073348A1 (en) * | 2004-10-06 | 2006-04-06 | General Electric Company | Electroplated fuel nozzle/swirler wear coat |
JP2006152812A (en) * | 2004-11-25 | 2006-06-15 | Denso Corp | Fuel injection valve and method of manufacturing the same |
DE102005023793B4 (en) * | 2005-05-19 | 2012-01-12 | Ulrich Schmid | Device for generating swirl in a fuel injection valve |
JP4089915B2 (en) * | 2005-08-09 | 2008-05-28 | 三菱電機株式会社 | Fuel injection valve |
FR2906317A3 (en) * | 2006-09-25 | 2008-03-28 | Renault Sas | Fuel injector for e.g. direct injection diesel internal combustion engine, has orifice whose outlet is edged on side by protrusion with lateral surface that is adjacent to orifice and forms acute angle with axis of orifice |
JP4618262B2 (en) * | 2007-03-16 | 2011-01-26 | 三菱電機株式会社 | Fuel injection valve |
JP5253480B2 (en) * | 2010-11-01 | 2013-07-31 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
DE102010063307A1 (en) | 2010-12-16 | 2012-06-21 | Robert Bosch Gmbh | Valve i.e. injection valve, for injecting e.g. fuel into fuel injection system of internal combustion engine, has inflow channel with output directly lying at hole inlet, where channel comprises smaller cross-section against spray hole |
DE102010064268A1 (en) * | 2010-12-28 | 2012-06-28 | Robert Bosch Gmbh | Injector |
DE102011078508B4 (en) * | 2011-07-01 | 2017-11-09 | Lechler Gmbh | full cone nozzle |
DE102012211665A1 (en) | 2011-08-18 | 2013-02-21 | Robert Bosch Gmbh | Valve for a flowing fluid |
JP5961383B2 (en) * | 2012-01-11 | 2016-08-02 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
JP5875443B2 (en) * | 2012-03-30 | 2016-03-02 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
DE102012211191A1 (en) | 2012-06-28 | 2014-01-02 | Robert Bosch Gmbh | Valve for metering fluid |
DE102013201453A1 (en) | 2013-01-30 | 2014-08-14 | Robert Bosch Gmbh | Valve for measuring out fluid e.g. gases, has perforated spraying disk provided against valve seat body and formed with spraying holes, where fluid-tight connection of spraying disk is formed on surface area of valve seat body |
JP5980706B2 (en) * | 2013-03-19 | 2016-08-31 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
DE102013209272A1 (en) | 2013-05-17 | 2014-11-20 | Robert Bosch Gmbh | Valve for metering fluid |
JP6239317B2 (en) * | 2013-08-29 | 2017-11-29 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
DE102013225948A1 (en) | 2013-12-13 | 2015-06-18 | Continental Automotive Gmbh | Nozzle head and fluid injection valve |
JP2016050552A (en) * | 2014-09-02 | 2016-04-11 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
BR112018006436B1 (en) * | 2015-10-05 | 2023-01-10 | Mitsubishi Electric Corporation | FUEL INJECTION VALVE, AND, INJECTION HOLE PLATE |
JP6808356B2 (en) * | 2016-05-25 | 2021-01-06 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
DE102018203065A1 (en) * | 2018-03-01 | 2019-09-05 | Robert Bosch Gmbh | Method for producing an injector |
JP6979993B2 (en) * | 2018-08-02 | 2021-12-15 | 日立Astemo株式会社 | Fuel injection valve |
JP6609009B2 (en) * | 2018-08-02 | 2019-11-20 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
WO2021250836A1 (en) * | 2020-06-11 | 2021-12-16 | 三菱電機株式会社 | Fuel injection valve |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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GB531796A (en) * | 1939-08-02 | 1941-01-10 | Scintilla Ltd | Fuel injector for internal combustion engines |
US4995949A (en) * | 1986-03-21 | 1991-02-26 | Extrude Hone Corporation | Orifice sizing using chemical, electrochemical, electrical discharge machining, plating, coating techniques |
US4923169A (en) * | 1987-12-23 | 1990-05-08 | Siemens-Bendix Automotive Electronics L.P. | Multi-stream thin edge orifice disks for valves |
DE3808396C2 (en) * | 1988-03-12 | 1995-05-04 | Bosch Gmbh Robert | Fuel injector |
US5397055A (en) * | 1991-11-01 | 1995-03-14 | Paul; Marius A. | Fuel injector system |
US5263645A (en) * | 1991-11-01 | 1993-11-23 | Paul Marius A | Fuel injector system |
US5570841A (en) * | 1994-10-07 | 1996-11-05 | Siemens Automotive Corporation | Multiple disk swirl atomizer for fuel injector |
DE19703200A1 (en) * | 1997-01-30 | 1998-08-06 | Bosch Gmbh Robert | Fuel injector |
DE19815775A1 (en) * | 1998-04-08 | 1999-10-14 | Bosch Gmbh Robert | Swirl disk and fuel injector with swirl disk |
-
2000
- 2000-10-04 DE DE10048935A patent/DE10048935A1/en not_active Withdrawn
-
2001
- 2001-09-27 US US10/148,774 patent/US20030116650A1/en not_active Abandoned
- 2001-09-27 WO PCT/DE2001/003711 patent/WO2002029244A1/en active IP Right Grant
- 2001-09-27 JP JP2002532793A patent/JP2004510915A/en active Pending
- 2001-09-27 EP EP01982155A patent/EP1228306B1/en not_active Expired - Lifetime
- 2001-09-27 DE DE50109233T patent/DE50109233D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0229244A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50109233D1 (en) | 2006-05-11 |
EP1228306B1 (en) | 2006-03-15 |
DE10048935A1 (en) | 2002-04-11 |
US20030116650A1 (en) | 2003-06-26 |
WO2002029244A1 (en) | 2002-04-11 |
JP2004510915A (en) | 2004-04-08 |
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