EP1763630A1 - Brennstoff-einspritzventil - Google Patents
Brennstoff-einspritzventilInfo
- Publication number
- EP1763630A1 EP1763630A1 EP05755639A EP05755639A EP1763630A1 EP 1763630 A1 EP1763630 A1 EP 1763630A1 EP 05755639 A EP05755639 A EP 05755639A EP 05755639 A EP05755639 A EP 05755639A EP 1763630 A1 EP1763630 A1 EP 1763630A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection valve
- yoke
- arrangement
- valve according
- 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
- 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
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar 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
- 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
- F02M51/0617—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets
- F02M51/0621—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets acting on one mobile armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/166—Selection of particular materials
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1638—Armatures not entering the winding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1676—Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1692—Electromagnets or actuators with two coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
Definitions
- the invention relates to a fuel injection valve for fuel injection systems of internal combustion engines, in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine.
- a fuel injection valve for fuel injection systems of internal combustion engines in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine.
- the fuel injector of the present invention has a fuel inlet adapted to allow fuel to flow into the fuel injector and an electrically actuatable actuator cooperating with a valve assembly for passing fuel in a directly or indirectly controlled manner to discharge a fuel outlet into the combustion chamber.
- the electromagnetic Betuschistseinrich ⁇ tion to be energized solenoid coil assembly, a sixteenwir ⁇ with this kende substantially soft magnetic magnet yoke assembly, and cooperating with this substantially soft magnetic magnetic armature arrangement.
- a fuel injection valve of the type mentioned above is known in a wide variety of designs from several manufacturers (Robert Bosch, Siemens VDO Automotive).
- these known arrangements have the disadvantage that the number of strokes per working cycle of the internal combustion engine is very limited. In particular, it is thus not possible, with high-speed internal combustion engines, to provide the required number of multiple injections per working cycle required for efficient engine management.
- the precise variation of the stroke of the valve needle is in this Anordnun ⁇ conditions only very limited possible.
- the conventional electromagnetic actuators have been found to be a limiting factor for the further development of efficient fuel injectors.
- a known approach to overcoming this limitation is to provide a piezo linear actuator instead of the electromagnetic actuator. Apart from the high costs and the relatively large space required for the piezo linear actuator, its temperature-dependent behavior is also in the immediate vicinity of the combustion chamber an internal combustion engine adversely. Also allow piezo actuators of today's design, only about 3 to 5 injection operations per power stroke of the engine, with opening / closing cycles of about 100 microseconds can be realized. Overall, this type of fuel injection valves has been denied in the use of series vehicles on a larger scale so far. In addition, the stroke-travel of a piezo-linear actuator for a given length is very limited and is currently increased by means of complicated lever arrangements to about 100 to 200 microns. Finally, the precise modulation of the stroke of the nozzle needle by means of the piezo linear actuator continues to be difficult, given the high dynamics and the increasingly high pressures in the combustion chamber, in particular in diesel direct injection.
- DE 100 05 182 A1 discloses an electromagnetic injection valve for controlling a quantity of fuel to be fed into an internal combustion engine with a valve body which can be actuated by an electromagnetic coil system, wherein the valve body cooperates with a magnetic armature of the electromagnetic coil system.
- the electromagnetic coil system has at least two coils symmetrically and concentrically arranged to the central longitudinal axis with identical characteristics, which are integrated into a magnetic circuit such that in each case a first polar body is arranged between two adjacent coils, and the inner and outer coils each adjacent to a second pole body. These polar bodies are arranged on the same side of the magnet armature.
- the pole bodies are dimensioned such that a radial sectional area of a middle first pole body corresponds to the sum of the sectional areas of the adjacent second pole bodies.
- the function depends significantly on the symmetry of the spatial design of the electromagnetic coil system.
- the time delay of the electrical and magnetic field construction depends primarily on the geometry of the magnetic circuit and ins ⁇ particular of the field diffusion and the eddy currents occurring.
- a solenoid-operated fuel injection valve in which an opening cross-section of a fuel channel, which is introduced as a space between an inner surface of a container in the fuel, and an outer surface of a ter in the Benzol ⁇ arranged needle element is limited changed becomes.
- the needle element is displaced in the longitudinal direction by tightening or magnetic forces generated by an electromagnetic device.
- the electromagnetic device is provided with a first and a second magnetic circuit, by means of which the tightening or magnetic forces can be controlled independently of one another.
- the object of the present invention is to provide fuel injection valves which can contribute to reducing the fuel consumption of internal combustion engines in order to increase the thermodynamic efficiency of the internal combustion engine.
- the invention solves this problem with a valve arrangement of the abovementioned type in that the magnet yoke arrangement is formed from at least two yoke discs, each yoke disc has at least one pole web on at least one of its end faces, which together with the electromagnet coil arrangement acts on the magnet Anchor arrangement acts, and each yoke disc is composed of at least two soft iron-containing part yokes, which at least partially surround an operating rod carrying the magnetic armature assembly.
- the inventive design of the components of the electromagnetic actuator that the fuel injector not only necessary for gasoline engines opening / closing forces, but even the necessary for a diesel direct injection opening / Closing forces at considerably more strokes per power stroke (about twice as many as a piezo-linear actuator today's design) can provide with an electromagnetic actuator. Furthermore, the overall arrangement builds at a small diameter outside diameter very compact at fast to be provided high ⁇ réelles7Schworth committee later. The Ausgestal ⁇ inventive device also allows a very efficient mass production with tight tolerances and low ing rate.
- the valve assembly according to the invention allows the realization of opening / closing cycles with about 40 - 50 microseconds and less. This enables multiple injection processes for efficient engine management both for gasoline engines and for diesel engines.
- the inventive arrangement allows a very precise control of the course of the stroke over time.
- the prior art (for example from DE 100 05 182 A1) calls for a centrally symmetric geometry of the pole webs.
- the outer iron rings have a smaller cross section than the inner. This adversely affects the design of the magnetic armature.
- the invention allows free dimensioning of the magnetic yoke, the magnet coil arrangement and armature arrangement, resulting in the invention, for example, a relatively lightweight magnet armature with improved valve dynamics.
- each partial yoke cooperates with at least one spacer which at least co-determines a dimension of a cavity between two yoke disks.
- the spacer or spacers can either be arranged in the region of the outer lateral surface of the yoke disc or be supported between the end surfaces of two yoke discs.
- the spacers are either (laser) welded or glued to the partial yokes or the yoke discs.
- the spacers can also be produced in one piece with the partial yokes or the yoke discs, at least at one end.
- electrical connection pieces for the electromagnet coil arrangement can be arranged or extend in the region of the outer jacket surface of the yoke disk.
- the individual windings of the solenoid coil assembly can be energized in a simple manner.
- each of the same side of the magnet armature arrangements facing Elekt ⁇ romagnet coil arrangements for in-phase electrical control in series or parallel connection are connected.
- a retaining spring is understood here to be a spring with a high spring constant, which is able to hold the valve arrangement in a position against the operating pressures (of the supplied fuel or in the combustion chamber).
- This is to be distinguished from a spring, which is able to ensure that the valve member remains in a closed position when no valve is energized and there are no operating pressures, so that no fuel flows through the valve arrangement into the combustion chamber.
- the invention makes it possible to open the valve assembly both electrically actuated, as well as electrically closed and to hold in two positions - but also in intermediate positions - in which the corresponding ange ⁇ arranged on both end faces of the armature arrangement coil arrangement is energized.
- This can also be used to decelerate or accelerate the valve member on the way between the two end positions.
- This has the consequence that the valve member can be conveyed considerably "softer” into the valve seat or the Chryslerge ⁇ set end position. This leads to less mechanical stress on the valve member or the valve seat, so that these components do not wear out so quickly.
- This allows a less robust dimensioning and a smaller für ⁇ diameter of the nozzle needle and thus a reduction of the necessary closing / holding forces.
- This has the consequence that a more precise metering of the fuel and, because of the smaller moving masses, a higher movement rate with more opening / closing cycles per working cycle than with piezo actuators is possible.
- Piezo-actuator considerably less favorable and less influenced than in a erfindungsgemä ⁇ Shen actuator.
- the pole webs have a pitch which is about 2 to about 30 times, preferably about 5 to about 20 times, and more preferably about 10 times greater than one between the magnetic Jochanord ⁇ tion and the Magnet armature assembly formed air gap in a rest position of the Betjani ⁇ supply device.
- the ratio between the pitch of the pole web, that is a dimension tion, which co-determines the magnetically active surface of the pole web, and the air gap is a size that significantly affects the functionality of the valve.
- the invention assumes that the ratio should be in the range between about 2 and about 30, wherein each ratio between these limits is within the scope of the invention and primarily on the structural conditions or requirements (available installation diameter, length, required Valve lift, valve member dynamics, etc.).
- pole webs have a substantially asymmetrical shape to the central longitudinal axis of the fuel injection valve is avoided that manufacturing inaccuracies or fluctuations in the magnetic field generation, or temperature fluctuations lead to uner ⁇ wished operating conditions.
- the non-rotationally symmetrical design of the magnetic yoke or the magnetic coil relative to the central longitudinal axis is much less sensitive.
- the pole webs have a spiral shape to the central longitudinal axis of the fuel injection valve.
- the pole webs have a substantially polygonal, preferably quadrangular or polygonal shape and are arranged side by side to form spaces for receiving the solenoid coil arrangements, wherein the pole webs are preferably arranged parallel to each other.
- At least two adjacent pole webs of at least one Elekt ⁇ romagnet coil arrangement may be at least partially surrounded meandering.
- each partial yoke can be formed from cobalt-iron-containing material and in each case have at least one pole web which is at least partially surrounded by at least one electromagnet coil arrangement.
- a feature of the invention is that at least one electromagnet coil arrangement can at least partially enclose non-circularly shaped pole webs.
- This in the production very efficient design allows an embodiment in which zwi ⁇ rule two layers of soft iron-containing sheet to arrange a current-conducting tape to form the magnetic coil assembly and a soft iron-containing sheet metal strip to form a stator yoke back.
- the current-conducting band and the soft iron-containing sheet-metal strip adjoin one another in each case on one longitudinal edge-electrically insulated.
- a cascading of a plurality of valve drives along the movement axis of the valve arrangement in which the actuating device comprises more than one assembly, formed by the magnet coil arrangement, the magnet yoke arrangement, and the magnet armature assembly. These assemblies act together on the valve assembly - either in the same direction or in opposite directions - to lift the valve member from the valve seat or possibly also braked hineinzubefördem.
- the actuator acts on a movable valve member to move it between an open position and a closed position relative to a stationary valve seat cooperating with the valve member and located downstream of the fuel inlet.
- the actuating device acts on a movable valve member to move it relative to a cooperating with the valve member fixed valve seat between an open position and a closed position.
- the magnet yoke arrangement and / or the magnet armature arrangement can be arranged eccentrically or asymmetrically with respect to a center axis of the fuel injection valve.
- the soft magnetic magnetic yoke assembly may be formed of at least two assembled shell parts with recesses, wherein in each recess in each case a solenoid coil assembly is received, which terminates in the direction of movement substantially flush with the respective end face of the shell parts wherein the end faces together define a cavity in which the magnet armature assembly is movably received along the central longitudinal axis.
- the solenoid coil assembly may be formed on at least one side of the magnetically soft magnetic armature arrangement by a solenoid coil arrangement having a plurality of coils, which terminate approximately flush with one of the end faces of one of the shell halves.
- the individual ring coils can have a thickness of about 20 to about 80% of the magnetic yoke iron.
- the individual coils on one side of the soft magnetic magnet armature arrangement can be set up to be energized in opposite directions.
- the yoke iron can be formed on at least one side of the soft-magnetic magnet armature arrangement by mutually insulated iron sheets.
- the invention is based on the principle of orienting the solenoid coil arrangement and the magnet armature arrangement essentially at right angles to one another.
- the magnet coil arrangement and the magnet armature arrangement can at least partially, preferably completely overlap in the radial direction to the central longitudinal axis. This realizes a particularly efficient magnetic circuit that allows very small valve opening / closing times.
- the magnet yoke arrangement can be designed as a substantially cylindrical soft-magnetic disk body with interruptions oriented radially or tangentially to the central longitudinal axis. These breaks can be simple slots or increase the stability of the Magnet yoke assembly may be formed by material, which has a higher magnetic Wi ⁇ resistance than the material of the soft magnetic disk body.
- the magnet armature arrangement can be formed by two or more spaced-apart strip-shaped soft magnetic sections.
- the magnet armature arrangement can be designed as a soft-magnetic disk with recesses, preferably radially oriented slots extending to the edge of the disk, or oblong holes.
- the slots or slots extending to the edge of the disk can be simple recesses or can be formed by increasing the stability of the material, which has a higher magnetic resistance than the material of the soft magnetic disk.
- the magnet armature arrangement can also be constructed in multiple layers, with a ceramic layer being arranged between two soft iron layers. This layer structure is attached to the valve rod. To further improve the stability, the two iron layers can also be connected together along the outer circumference.
- the soft magnetic armature arrangement and the valve member can be interconnected and biased by a spring arrangement in the open position or the closed position and bring by energizing the solenoid coil assembly in the closed position or the open position.
- two of the above-described actuators may be provided which act in opposite directions on the valve member and this bring in each energization in the closed position or the open position.
- the actuating rod forms together thereon, generally (laser) welded magnet armature assemblies, a subassembly which is to be assembled with at least one further substructure group formed from stacked and spaced partial yokes.
- a pressure-resistant housing surrounds the actuating device and the valve arrangement, from which electrical connections for the solenoid coil arrangements are guided outwards by means of glass feedthroughs.
- the glass bushings ensure a safe, fuel-tight and large-series, fuel-tight and with respect to the operating pressures (up to about 2000 bar) pressure-resistant arrangement for the electrical An ⁇ connections to the fuel injector sure.
- the solenoid coil assemblies are formed as copper-containing moldings which are electrically insulated by ceramic coating, aluminum oxide coating, electrophoresed paint coating or the like, are stacked around the pile lands and stacked after stacking and stacked held subjoint formed subassembly verbun ⁇ the electrical connections are the.
- the solenoid coil arrangements are cast or glued to the partial yokes. This increases the continuous operation resistance of the fuel injection valve assembly.
- the fuel injection valve according to the invention can be set up and dimensioned to protrude into the combustion chamber of a foreign-fired internal combustion engine, or into the combustion chamber of a self-igniting internal combustion engine.
- the invention relates to a mounting device with a mounting block, which has a number of the yoke discs of the fuel injection valve corresponding number of axially spaced receptacles which are dimensioned so that the yoke parts of the yoke discs are substantially free to introduce and remove, wherein the axial distances of the recesses substantially correspond to the axial extent of the cavity between two adjacent yoke disks, and which permits welding, soldering or gluing of spacers to the yoke parts.
- FIG. 1 shows a schematic representation in longitudinal section through a fuel injection valve according to a first embodiment of the invention.
- FIG. 2 shows a schematic plan view of a cross section of a soft magnetic armature arrangement from FIG. 1, cut along the line II-II.
- FIG. 3 shows a schematic plan view of a cross section of a soft magnetic yoke arrangement from FIG. 1, cut along the line III-III.
- FIG. 4 shows a schematic plan view of a soft-magnetic yoke arrangement with a magnet coil arrangement.
- Fig. 5 shows a schematic plan view of a soft magnetic yoke assembly and a magnet coil assembly according to a second embodiment of the invention.
- FIG. 6 is a schematic plan view of a soft magnetic yoke assembly and a magnet coil assembly according to a third embodiment of the invention.
- FIG. 7 shows a side perspective view of the soft magnetic yoke arrangement and the magnet coil arrangement according to FIG. 6.
- FIG. 8 shows a side partially cutaway view of the valve rod with an anchor assembly having a box section.
- FIG. 9 shows a perspective side view of a further embodiment of an actuating device according to the invention.
- FIG. 10 shows a partial yoke of a yoke disk for an actuating device according to the invention according to FIG. 9 in an enlarged perspective side view.
- a fuel injection valve with a valve housing 10 which is essentially rotationally symmetrical with respect to a central longitudinal axis M, is shown in schematic longitudinal section in a half-open position.
- a fuel injection valve serves for the direct injection of fuel into the combustion chamber, not further illustrated, of an internal combustion engine.
- the fuel injection valve 10 has a radially oriented, lateral fuel inlet 12, through which pressurized fuel can flow into the fuel injection valve by means of a pump or other pressure transmitter not further illustrated.
- a central fuel passage 16 extends through a pipe 17 to a fuel outlet 18.
- a valve assembly 20 is provided to guide the fuel in a controlled manner through the fuel outlet 18 to flow into the combustion chamber of the internal combustion engine.
- the valve assembly 20 is formed by a valve member 20a located in the central fuel passage 16 and tapering toward the fuel outlet 18 and a valve seat 20b cooperating with the valve member 20a and configured in accordance with the shape of the valve member 20a.
- valve member 20a is connected via an actuating rod 22 to an electrically controllable actuator 24 for moving the valve member 20a between an open position and a closed position (in FIG. 1 up and down).
- an electrically controllable actuator 24 for moving the valve member 20a between an open position and a closed position (in FIG. 1 up and down).
- the actuating device 24 is formed by a solenoid coil arrangement 24a, a soft-magnetic magnet yoke arrangement 24b cooperating therewith, and a soft-magnetic magnet armature arrangement 24c cooperating therewith.
- the magnetically soft magnet yoke arrangement 24b is formed from two shell halves 24b 1 and 24b ", which are joined together approximately at the level of the section II - II, with recesses 26a, 26.
- the recesses 26a, 26b in the embodiment according to FIG 4 and 5 are delimited by likewise approximately trapezoidal or parallelogram-shaped pole webs 25a, 25b.
- an electromagnet coil arrangement 24a 1 and 24a dig with the respective end faces 27a, 27b of the shell halves 24b 1 and 24b "complete.
- the end faces 27a, 27b of the shell halves 24b 1 and 24b "define a cavity 28 in which the magnet armature assembly 24c is movably received along the central axis M.
- the solenoid coil assemblies and the Magnetjochan onion have the configuration shown in Hg. 4, in which the pole webs 25a, 25b have a substantially quadrangular shape and side by side to form Zwi ⁇ spaces for receiving the electromagnet -Spulenan angelen 24a 1, 24a are arranged.
- the magnet yoke may be formed from a one-piece soft iron, from which the pole or the gaps are formed here.
- the magnetic yoke arrangement as a molded part made of sintered iron powder or to assemble it from a plurality of sections, which may be insulated from one another, and / or to form slits or slotted holes which are filled with electrically insulating material for example, to glue.
- Fig. 2 shows the soft magnetic magnet armature assembly 24c. It has a soft magnetic plate 24c which is arranged around the central axis M.
- the armature disk 24c is provided with radially oriented interruptions 36. These interruptions have the shape of slots 36 extending to the edge 30 of the armature disk 24c. This results in radially oriented strips 25 which are connected to one another in the center of the disk 24c.
- the magnet yoke arrangement 24b is provided with a plurality of radially oriented vertical interruptions 36 in the form of slots.
- a material web 38 is provided between the slots 36 on the outer wall, which ensures a closed lateral surface.
- the closed lateral surface may also be arranged at the radially inner ends of the slots 36. This also has the advantage of possibly improved heat dissipation from the yoke.
- Both shell halves 24b 1 and 24b "of the magnet yoke assembly 24b are provided with the slots 36.
- the solenoid coil assembly 24a and the radially oriented tabs 25 of the soft magnetic armature disc 24c may be oriented substantially perpendicular to one another. It is understood that this can be realized either in the above-described form with radially oriented strips 25 of the armature arrangement 24b and a spiral-shaped solenoid coil arrangement 24a or magnetic yoke arrangement 24b, or vice versa. However, it is also possible to realize the actuating device 24 with concentric anchor parts and a star-shaped electromagnetic coil arrangement.
- Magnetic armature assembly 24c is a circular ferrous disk having a shape described in more detail below.
- the electromagnet coil arrangement 24a and the magnet armature arrangement 24c overlap in the radial direction with respect to the center axis (M).
- M center axis
- the solenoid coil assembly 24a has a smaller outside diameter than the armature disk 24c, so that the magnetic flux caused by the solenoid coil assembly 24a enters the armature disk 24c with virtually no significant leakage loss. This makes a particularly efficient mag- realized, which allows very low valve opening / closing times and high holding forces.
- the armature disk 24c can also be a closed disk made of soft iron, provided that the above-described embodiment of the magnet yoke or magnet coil arrangement ensures that the leakage losses or eddy current losses are low enough are the respective purpose.
- the armature disk 24c is rigidly connected to the actuating rod 22 and can be longitudinally moved along the middle axis M in the pipe 17 in an armature space 34 delimited by the shell halves 24b 'and 24b "of the magnet yoke assembly 24b
- the armature disk 24c is loaded with the actuating rod 22 by a helical spring 40 arranged coaxially with respect to the center axis M, so that the valve member 20a located at the end of the actuating rod 22 is seated in a fluid-tight manner in the valve seat 20b, ie is forced into its closed position
- a low-field magnetic field is induced in the magnet yoke arrangement 24b which drives the armature disk 24c with the actuating rod 22 in the direction of the respective shell half 24b '.
- valve member 20a moves away from the valve seat 20b to its off position
- the other coil (for example, 24a ") of the solenoid coil assembly 24a is energized
- the valve member 20a moves to the other position toward the valve seat 20b toward its closed position.
- An end remote from the valve member 20a end of the actuating rod 22 acting on this coil spring 40 keeps the valve member 20a in energized solenoid coil 24a arrangement in its closed position.
- One embodiment of the invention is to couple via the actuating rod 22 with the valve member 20a a plurality of (two or more) armature discs 24c, each acting on one or both sides of a coil yoke assembly.
- the Spulen ⁇ arrangement 24a on each side of the soft magnetic magnet armature assembly 24c each be designed in several parts.
- two or more solenoid Spulen ⁇ arrangements 24a ', 24a are provided, which are substantially flush with the respective end faces 27a, 27b of the shell halves 24b' and 24b" complete.
- This embodiment can have an increased magnetic field density and thus also an increased valve member holding force and valve member operating speed with the same volume of construction.
- the yoke iron between the individual coils 24a of one side can here be formed by mutually insulated iron sheets.
- each individual pole web is surrounded by a separate winding.
- solenoid coil arrangements for the sake of clarity, in FIG. 4, not all the pole webs are provided with solenoid coil arrangements.
- the solenoid coil arrangement in the configuration shown in FIG. 5, in which one (or more) windings meander in the recesses 26a, 26b between the pole webs 25a, 25b of the magnet yoke assembly is inserted (are).
- the pole webs 25a, 25b (and also the recesses 26a, 26) have a direction to the center longitudinal axis M of each of the pole webs 25a, 25b
- Fuel injection valve substantially asymmetric metric shape, wherein at least one solenoid coil assembly 24a 1 , 24 a "non-annular shaped pole web at least partially so that on the edges of oppositely directed electrical current is passed.
- an electromagnetic coil arrangement 24a shown in FIGS. 6 and 7 is produced integrally with the cooperating soft-magnetic magnet yoke arrangement 24b.
- a soft iron-containing, elongated yoke plate 50 is surrounded on both sides with a conductor strip 52 by this to a - in the later, finished state inside - longitudinal edge 50 'of the yoke plate 50 is folded over.
- a soft iron-containing sheet metal strip 54 is arranged, which is ge as thick as the conductor strip 52 and also to the - in the finished state inside - longitudinal edge 50 'of the yoke plate 50 is folded over.
- the metal strip 54 lying next to the conductor strip 52 serves, together with the section of the yoke plate 50 on which it rests flat, to form - in the finished state - the back of the magnetic yoke.
- the conductor strip 52 projects beyond the lateral longitudinal edge 50 "of the yoke plate 50 at the two ends for electrical contacting, after which a second layer of a long iron yoke plate 56 containing a soft iron is placed, so that a layer structure is present
- the layer structure is then spirally rolled together in the manner shown in FIG After helical rolling, the first and second yoke laminations 50, 56 are close to each other, and the overall structure is a cylindrical former, it being understood that the conductor strip 52 is electrically insulated from the soft iron portions 50, 54, 56.
- the air gap formed in FIG. 1 and coaxial with the central longitudinal axis M between the magnet yoke arrangement 24b and the magnet armature arrangement 24c in the rest position of the actuation device 24 is approximately 10 times greater than the grid dimension of the pole webs.
- the grid dimension in this embodiment is the transverse dimension of the pole webs.
- the grid dimension is the thickness of the yoke plate 40.
- Other geometries of the pole webs are also possible. Determining for the grid dimension are the smallest structures of the pole webs, so their longitudinal dimensions, transverse dimensions, thickness, etc. which to a finely divided shape of the lead to the magnet armature acting poles of the magnetic yoke. This small grid size leads to high magnetic flux density and thus to high tightening or holding forces of the valve arrangement or even to a low switching time, since the electrical and magnetic losses or the induced opposing forces are very low.
- armature disk 24c is constructed in several layers.
- a ceramic layer 24c is arranged between two relatively thin - and thus low-swirl - soft iron layers 24c 1 and attached to the valve rod 22. It is understood that the two soft iron layers 24c 1 are either complete armature disks or in the above described It is also possible for a plurality of such anker arrangements to be distributed along the valve rod 22.
- FIG. 9 shows a partial view of a further embodiment of the magnetic yoke arrangement 24b according to the invention, in which two substantially semicircular disk-shaped partial yokes 125a are joined together to form a yoke disk 125 of the magnetic yoke arrangement 24b.
- a composite yoke disc 125 is a semi-circular cylindrical recess 125 '(see, Hg. 10), which receives a La ⁇ gerbuchse 126 for the valve rod 22.
- each yoke disc is composed of at least two soft iron-containing partial yokes, which surround a magnet armature arrangement carrying the actuating rod.
- the respective partial yokes of a yoke disc are glued together.
- Each yoke disc 125 of the magnetic yoke assembly - except the yoke discs at the two ends of Jochinstapels in Rg. 9 - has at its two end faces 128, 130 each have a Polsteg 25a, 25b, with the solenoid coil assembly 24a ', 24 a' together
- the magnet armature arrangement 24c is formed by a corresponding number of worm disks welded to the valve actuating rod 22, which are provided with a multiplicity of bores through which the fuel can flow, if the magnetic armature assembly 24c moves between its end positions.
- Each Operach 125a has formed in the region of its outer circumferential surface a spacer 130, which determines the dimension X of the cavity 28 between the two two yoke discs 125. Furthermore, electrical connection pieces 132 for the solenoid coil arrangement 24a ', 24a "are arranged in the area of the outer jacket surface of the yoke disk 125. In this way, solenoid coil arrangements 24a', 24a" facing a respective side of the magnet armature arrangements 24c are for one in-phase electrical Ansteue ⁇ tion connected in series or parallel connection.
- the magnet armature arrangements 24c arranged on the actuating rod 22 thus form a sub-assembly which is to be assembled with the two further subassemblies formed from stacked and spaced-apart partial yokes.
- a pressure-resistant housing surrounds the actuating device 24 and the valve arrangement 20, from which electrical connections are made to the outside of the electrical connecting pieces 132 for the electromagnetic coil assemblies 24a 1 , 24 a "by means of glass feedthroughs.
- the solenoid coil assemblies 24a ', 24a are formed as copper-containing molded parts electrically insulated by means of alumina coating or the like, which are mounted around the pole lands 25a, 25b and, after joining, stacked and spaced apart Finally, the electromagnetic coil arrangements 24a 1 , 24a "are cast in the recesses of the partial yokes.
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)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004032229A DE102004032229B3 (de) | 2004-07-02 | 2004-07-02 | Brennstoff-Einspritzventil |
PCT/EP2005/007130 WO2006002953A1 (de) | 2004-07-02 | 2005-07-01 | Brennstoff-einspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1763630A1 true EP1763630A1 (de) | 2007-03-21 |
EP1763630B1 EP1763630B1 (de) | 2009-10-14 |
Family
ID=34971307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05755639A Expired - Fee Related EP1763630B1 (de) | 2004-07-02 | 2005-07-01 | Brennstoff-einspritzventil |
Country Status (5)
Country | Link |
---|---|
US (1) | US8028937B2 (de) |
EP (1) | EP1763630B1 (de) |
CN (1) | CN1981129B (de) |
DE (2) | DE102004032229B3 (de) |
WO (1) | WO2006002953A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007012184A1 (de) * | 2006-08-02 | 2008-02-07 | Continental Teves Ag & Co. Ohg | Elektromagnet |
DE102006055088B4 (de) * | 2006-11-21 | 2008-12-04 | Vacuumschmelze Gmbh & Co. Kg | Elektromagnetisches Einspritzventil und Verfahren zu seiner Herstellung sowie Verwendung eines Magnetkerns für ein elektromagnetisches Einspritzventil |
DE102007028315A1 (de) | 2007-02-07 | 2008-08-14 | Continental Teves Ag & Co. Ohg | Elektromagnet |
FR2916103B1 (fr) * | 2007-05-11 | 2009-06-26 | Cnes Epic | Actionneur electromagnetique a reluctance variable |
DE102007049974A1 (de) * | 2007-10-18 | 2009-04-23 | Robert Bosch Gmbh | Streuflussreduzierter Anker |
DE102008001822A1 (de) * | 2008-05-16 | 2009-11-19 | Robert Bosch Gmbh | Magnetventil mit Ankerschlitzung |
DE102009038730B4 (de) | 2009-08-27 | 2014-03-13 | Vacuumschmelze Gmbh & Co. Kg | Blechpaket aus weichmagnetischen Einzelblechen, elektromagnetischer Aktor und Verfahren zu deren Herstellung sowie Verwendung eines weichmagnetischen Blechpakets |
KR20110029443A (ko) * | 2009-09-15 | 2011-03-23 | 현대자동차주식회사 | 연료 분사량 편차 감소를 위한 콘트롤 밸브 및 이를 포함한 인젝터 |
DE102010003334A1 (de) | 2010-03-26 | 2011-09-29 | Robert Bosch Gmbh | Kraftstoffinjektor |
DE102012218325A1 (de) * | 2012-10-09 | 2014-04-10 | Continental Automotive Gmbh | Aktuatoreinheit, insbesondere für die Einspritzung eines Kraftstoffs in einen Brennraum einer Verbrennungskraftmaschine |
DE102014225359B4 (de) * | 2014-12-10 | 2021-10-28 | Vitesco Technologies GmbH | Ventilanordnung für ein Kraftstoffeinspritzsystem und Kraftstoffeinspritzsystem |
AT516619B1 (de) | 2015-02-27 | 2016-07-15 | Ge Jenbacher Gmbh & Co Og | Zylinderkopf und Brennkraftmaschine |
DE102015218421A1 (de) | 2015-09-24 | 2017-03-30 | Continental Automotive Gmbh | Geblechter Magnetanker für eine elektromagnetische Betätigungsvorrichtung sowie Einspritzventil zum Zumessen eines Fluids |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2237746A1 (de) * | 1972-08-01 | 1974-02-07 | Bosch Gmbh Robert | Einspritzventil fuer dieselbrennkraftmaschinen |
GB1599525A (en) * | 1977-03-26 | 1981-10-07 | Lucas Industries Ltd | Fuel injection nozzle units |
US4390856A (en) * | 1981-07-31 | 1983-06-28 | Ford Motor Company | Multipole solenoids |
JPS61142708A (ja) * | 1984-12-15 | 1986-06-30 | Diesel Kiki Co Ltd | 電磁アクチュエ−タ |
US5035360A (en) * | 1990-07-02 | 1991-07-30 | The University Of Toronto Innovations Foundation | Electrically actuated gaseous fuel timing and metering device |
US5207410A (en) * | 1992-06-03 | 1993-05-04 | Siemens Automotive L.P. | Means for improving the opening response of a solenoid operated fuel valve |
JPH10335139A (ja) * | 1997-05-28 | 1998-12-18 | Denso Corp | ソレノイド |
US6036120A (en) * | 1998-03-27 | 2000-03-14 | General Motors Corporation | Fuel injector and method |
US6155503A (en) * | 1998-05-26 | 2000-12-05 | Cummins Engine Company, Inc. | Solenoid actuator assembly |
DE10060657A1 (de) * | 1999-12-07 | 2001-06-13 | Denso Corp | Kraftstoffeinspritzgerät |
DE10005182A1 (de) * | 2000-02-05 | 2001-08-09 | Bosch Gmbh Robert | Elektromagnetisches Einspritzventil zur Steuerung einer in eine Verbrennungskraftmaschine einzuspeisenden Kraftstoffmenge |
DE10005180C1 (de) * | 2000-02-05 | 2001-08-23 | Mannesmann Sachs Ag | Dämpfventil, insbesondere für einen Schwingungsdämpfer |
DE10059682A1 (de) * | 2000-12-01 | 2002-06-06 | Bosch Gmbh Robert | Zerstäuberscheibe und Brennstoffeinspritzventil mit einer Zerstäuberscheibe |
DE10136808A1 (de) * | 2001-07-27 | 2003-02-13 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6910644B2 (en) * | 2001-12-26 | 2005-06-28 | Toyota Jidosha Kabushiki Kaisha | Solenoid-operated fuel injection valve |
JP3757261B2 (ja) * | 2002-08-05 | 2006-03-22 | ボッシュ株式会社 | 燃料噴射弁 |
US6892970B2 (en) * | 2002-12-18 | 2005-05-17 | Robert Bosch Gmbh | Fuel injector having segmented metal core |
DE10319285B3 (de) | 2003-04-29 | 2004-09-23 | Compact Dynamics Gmbh | Brennstoff-Einspritzventil für Brennkraftmaschinen |
-
2004
- 2004-07-02 DE DE102004032229A patent/DE102004032229B3/de not_active Expired - Fee Related
-
2005
- 2005-07-01 CN CN2005800223742A patent/CN1981129B/zh not_active Expired - Fee Related
- 2005-07-01 DE DE502005008333T patent/DE502005008333D1/de active Active
- 2005-07-01 WO PCT/EP2005/007130 patent/WO2006002953A1/de not_active Application Discontinuation
- 2005-07-01 US US11/571,486 patent/US8028937B2/en not_active Expired - Fee Related
- 2005-07-01 EP EP05755639A patent/EP1763630B1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006002953A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1981129B (zh) | 2010-06-02 |
EP1763630B1 (de) | 2009-10-14 |
US20080092854A1 (en) | 2008-04-24 |
CN1981129A (zh) | 2007-06-13 |
US8028937B2 (en) | 2011-10-04 |
DE502005008333D1 (de) | 2009-11-26 |
WO2006002953A1 (de) | 2006-01-12 |
DE102004032229B3 (de) | 2006-01-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1763630B1 (de) | Brennstoff-einspritzventil | |
DE102007044877A1 (de) | Fluid-Einspritzventil | |
EP1012473B1 (de) | Drallscheibe und brennstoffeinspritzventil mit drallscheibe | |
DE19638201A1 (de) | Brennstoffeinspritzventil | |
WO2002038949A1 (de) | Brennstoffeinspritzventil | |
EP0862781A1 (de) | Brennstoffeinspritzventil | |
DE102007008901B4 (de) | Fluid-Einspritzventil | |
DE19815789A1 (de) | Brennstoffeinspritzventil | |
DE19815800A1 (de) | Brennstoffeinspritzventil | |
EP1618298B1 (de) | Brennstoff-einspritzventil für brennkraftmaschinen | |
EP0937200B1 (de) | Elektromagnetisch betätigbares ventil | |
EP1309794B1 (de) | Brennstoffeinspritzventil | |
EP1303695A1 (de) | Brennstoffeinspritzventil | |
DE10005182A1 (de) | Elektromagnetisches Einspritzventil zur Steuerung einer in eine Verbrennungskraftmaschine einzuspeisenden Kraftstoffmenge | |
DE10360713A1 (de) | Elektromagnetischer Linearaktuator | |
WO1991009222A1 (de) | Elektromagnetisch betätigbares kraftstoffeinspritzventil | |
DE10118273A1 (de) | Brennstoffeinspritzventil | |
WO2009068263A1 (de) | Fluid-einspritzventil mit nadellängung | |
EP1299638A1 (de) | Brennstoffeinspritzventil |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20061228 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GRUENDL, ANDREAS Inventor name: HOFFMANN, BERNHARD |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR |
|
17Q | First examination report despatched |
Effective date: 20080110 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR |
|
REF | Corresponds to: |
Ref document number: 502005008333 Country of ref document: DE Date of ref document: 20091126 Kind code of ref document: P |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20100715 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20180727 Year of fee payment: 14 Ref country code: FR Payment date: 20180730 Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005008333 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190731 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |