EP1030967B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1030967B1 EP1030967B1 EP99936257A EP99936257A EP1030967B1 EP 1030967 B1 EP1030967 B1 EP 1030967B1 EP 99936257 A EP99936257 A EP 99936257A EP 99936257 A EP99936257 A EP 99936257A EP 1030967 B1 EP1030967 B1 EP 1030967B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- connection
- injection valve
- valve
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 65
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
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- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 5
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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Images
Classifications
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- 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
-
- 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
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
-
- 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
- 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
- F02M51/0682—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 the body being hollow and its interior communicating with the fuel flow
-
- 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
- F02M61/165—Filtering elements specially adapted in fuel inlets to injector
Definitions
- the invention is based on a fuel injector according to the genus of the main claim.
- Such a fuel injector is also out DE-A-3 834 444 known (see Figure 3).
- the fuel injector according to the invention with the characterizing features of claim 1 has the advantage that it can be manufactured inexpensively in a simple manner and can be installed safely and reliably. In advantageous Way, a great mechanical stability of the Fuel injector reached. In addition is ensures that electrical connectors within of the valve is safe and protected.
- the separation into two modules results in Advantage that all negative influences when manufacturing the largely made of plastic connector (large Overmolding pressures, heat development) of which the important ones Components of the functional part that perform valve functions be kept away.
- the relatively dirty one Overmolding process can advantageously outside the assembly line of the functional part.
- the connector on the downstream end several axially projecting segments be provided, which after the molding process in the Protrude extrusion.
- the heat dissipation during the Overmolding process improved.
- the hot volume kept quite small in the molding process. This allows significantly reduce the molding cycle time.
- the mass accumulation within the Overmolding reduced. The formation of voids can be done in this way be reduced effectively.
- the segments arise also turbulence in the flowing plastic. this leads to increased strength of the entire extrusion coating.
- FIG. 1 shows a first Fuel injector according to the invention with two independently pre-assembled modules in the assembled state
- 2 shows a connecting part representing the first assembly of the valve according to Figure 1
- Figure 3 a the second assembly representative functional part of the valve according to FIG.
- Figure 4 shows a second embodiment of a Functional part
- Figure 5 is an electrical Connection area in a schematic representation
- Figures 6A to 6C three embodiments for contact pins accordingly a section along the line VI-VI in Figure 5
- Figures 7A to 7D four embodiments for contact sockets corresponding to a section along the line VII-VII in Figure 5
- Figure 8 shows a second embodiment of a Connection part
- Figure 9 is a bottom view of the Connection part according to Figure 8
- Figure 10 is a bottom view to another connector.
- FIG. 1 This is exemplarily and partially simplified in FIG. 1 shown electromagnetically actuated according to the invention
- Valve in the form of an injector for Fuel injection systems from mixture-compressing, spark-ignited internal combustion engines has one of one Magnetic coil 1 surrounded, as an inner pole and partially as Fuel flow serving largely tubular Core 2.
- the magnetic coil 1 is from an outer, sleeve-shaped and stepped, z. B. surrounded ferromagnetic valve jacket 5 as the outer pole, the completely surrounds the magnetic coil 1 in the circumferential direction.
- the Form solenoid 1, the inner pole 2 and the outer pole 5 together an electrically excitable actuator.
- the actuating element can also be used as a piezo actuator be executed.
- the core 2 is in an inner, concentric to a longitudinal valve axis 10 extending opening 11 of the valve sleeve 6 introduced.
- the e.g. ferritic valve sleeve 6 is elongated and thin-walled and has a jacket section 12 and a bottom portion 13, the shell portion 12 in Circumferential direction and the bottom portion 13 in the axial Direction at its downstream end the opening 11 limit.
- the opening 11 also serves as a guide opening for one axially movable along the valve longitudinal axis 10 Valve needle 14.
- valve seat body 15 which e.g. sits on the bottom portion 13 of the valve sleeve 6 and has a fixed valve seat surface 16 as a valve seat.
- the Valve needle 14 is, for example, of a tubular Anchor section 17, also tubular Needle section 18 and a spherical Valve closing body 19 is formed, the Valve closing body 19 e.g. by means of a weld seam is connected to the needle section 18.
- a flat spray plate 21 is arranged, the fixed Connection of valve seat body 15 and spray orifice plate 21 z. B.
- the injection valve is actuated in a known manner Way, here for example electromagnetic.
- a Actuation by means of a piezo actuator is also conceivable. to axial movement of the valve needle 14 and thus for opening against the spring force of one on the valve needle 14 attacking return spring 25 or closing the Injector serves the electromagnetic circuit with the Solenoid 1, the inner core 2, the outer valve jacket 5 and the anchor section 17.
- the anchor section 17 is with the end facing away from the valve closing body 19 onto the core 2 aligned.
- the spherical valve closing body 19 interacts with the tapered in the direction of flow Valve seat surface 16 of the valve seat body 15 together, the in the axial direction downstream of a guide opening in Valve seat body 15 is formed.
- the spray hole disc 21 has at least one, for example four through EDM, laser drilling or stamping molded Spray orifices 27.
- the insertion depth of the core 2 in the injection valve is below other decisive for the stroke of the valve needle 14 the one end position of the valve needle 14 is not at excited solenoid 1 by the system of Valve closing body 19 on the valve seat surface 16 of the Valve seat body 15 set while the other End position of the valve needle 14 when the solenoid coil 1 is excited by the installation of the anchor section 17 on the downstream Core end results.
- the stroke is set by a axial displacement of the core 2, which corresponds to the desired position subsequently firmly with the valve sleeve 6 is connected.
- Flow bore 28 of the core 2 which is the supply of the Serves fuel in the direction of the valve seat surface 16 is in addition to the return spring 25, an adjusting element in the form an adjusting spring 29 inserted.
- the adjusting spring 29 is used to adjust the spring preload on the Adjustment spring 29 adjacent return spring 25, which itself again with its opposite side on the Valve needle 14 supports, with an adjustment of the dynamic spray quantity with the setting spring 29.
- the adjusting element can also be used instead of an adjusting spring be designed as adjusting bolts, adjusting sleeves etc.
- the injection valve described so far stands out through its particularly compact structure, so that a very small, handy injection valve is created.
- These components form a pre-assembled standalone assembly that hereinafter called functional part 30 and in Figure 3 as such assembly is shown separately again.
- the Functional part 30 essentially comprises the electromagnetic circuit 1, 2, 5 and a sealing valve (Valve closing body 19, valve seat body 15) with a following jet processing element (spray orifice plate 21).
- valve jacket 5 and the valve sleeve 6 formed and almost completely by the magnetic coil 1 filled coil space is in the valve seat body 15 facing direction through a stepped radial region 32 of the valve jacket 5 limited, while the conclusion on the the side facing away from the valve seat body 15 by a disc-shaped cover element 33 is guaranteed.
- this is from the Extends through coil body 3.
- Stand in this area for example two contact pins or sockets 34 from the Plastic of the bobbin 3 and thus from the Functional part 30 out. Via the electrical contact pins or sockets 34 that act as electrical connectors serve, the electrical contacting takes place Magnetic coil 1 and thus its excitation.
- a second is completely independent of the functional part 30 Manufactured assembly, the following as a connector 40th referred to as.
- the independent and pre-assembled Connection part 40 is mounted in Figure 1 with the Functional part 30 as part of the entire injection valve and shown separately in Figure 2.
- the Connection part 40 is characterized above all by that it is the electrical and hydraulic connection of the Includes fuel injector. That largely as Plastic part made connector part 40 therefore has a tubular serving as a fuel inlet port Base body 42.
- a fuel filter 44 inserted or pressed.
- the fuel filter 44 protrudes into the Flow bore 43 of the base body 42 at its inlet end and ensures the filtering out such fuel components, due to their size in Injector blockages or damage could cause.
- a hydraulic connection of connector 40 and Functional part 30 is in the fully assembled Fuel injector achieved in that the Flow bores 43 and 28 of the two assemblies to one another brought that an unimpeded flow through the Fuel is guaranteed.
- An inner opening 46 in Cover element 33 allows the valve sleeve 6 and thus also form the core 2 so that both the opening 46 protrude and at least the valve sleeve 6 towards Connection part 40 clearly above the cover element 33 also available.
- When mounting the connector 40 on the Functional part 30 can have a lower end region 47 of the Base body 42 in the protruding part of the valve sleeve 6 to increase the connection stability in the opening 11 of the Extend valve sleeve 6.
- the end region 47 of the connecting part 40 is, for example stepped, the base body 42 on a lower end face 58 strong from the outside diameter rejuvenated. Limited together with a lower ring collar 49 the end face 58 an annular groove 50, in which a sealing element, e.g. an O-shaped sealing ring 51 is arranged. in the The connection area of both assemblies 30 and 40 is thus adequate sealing is guaranteed.
- Base body 42 made of plastic also belongs co-molded electrical connector 56.
- the electrical contact elements 55 end at one end as exposed contact pins 57 of the electrical Connector plug 56, with a corresponding not shown electrical connection element, such as. B. one Contact strip, for complete electrical contacting of the injection valve can be connected.
- the Connectors 56 opposite ends run the Contact elements 55 to the lower end face 58 of the Connection part 40 and form an electrical there Connecting element 59, the z. B. as also exposed Contact pins is executed.
- FIGs 2 and 3 show the two independent and Functional parts 30 and Connection part 40 before the final assembly of the Fuel injector. It is meant to be explicit be noted that both the functional part 30 and also the connecting part 40 individually modular can be built, which means that for simplified Manufacturing and assembly of the assemblies 30 and 40 certain Subassemblies can be used. For one further modular subdivision is described below for the Assembly 30 and 40 each given an example in the Figures are not shown in detail.
- FIG 2 is a dash-dot line possible module dividing line 64 indicated, which should show that the connector 56 can also be made variable, to then be used on different base bodies 42 become.
- the connector 56 can also be made variable, to then be used on different base bodies 42 become.
- the functional part 30 can also consist of modular ones
- Subassemblies e.g. the Beam preparation element in the form of the spray perforated disk 21 is initially installed in a separate injection assembly, which is only subsequently integrated on the functional part 30.
- It is useful e.g. multilayer, by means of so-called multilayer electroplated perforated disks in the injection assembly, which is a disc-shaped Perforated disc carrier can be used.
- the perforated disks can have opening contours with which very different spray patterns or a swirl application of the spray can be generated.
- the versatile one Spray assembly can, for example, by means of (laser) Welding downstream of the valve seat 16 am Valve seat body 15 or a housing part of the Functional part 30 be attached.
- the Spray assembly with the spray plate 21 e.g. aslant inclined to the longitudinal axis as a subassembly on the functional part 30 may be provided.
- the preassembled assemblies 30, 40 in the connection area for the mechanical connection of both Assembled assemblies 30, 40. It is ring-shaped on outer circumference of the valve sleeve 6 the volume between the lower end face 58 of the connector 40 and the Cover element 33 of the functional part 30 to the outer Circumference of the base body 42 or the valve jacket 5 with Plastic filled so that a flush to the outside Conclusion is formed (Figure 1). Through this extrusion 60 the electrical connecting elements 34, 59 are safe before the influences of the engine compartment (dirt, fuel) protected.
- a plastic chosen that is at a higher temperature has its melting point than that for the connector 40 used plastic so that a polymeric compound between the two plastics.
- Above the end face 58 is the outer circumference of the base body 42 designed as a labyrinth seal 61, in which there are several Grooves or furrows 62 in a ring on the circumference of the base body 42 extend.
- the material between the individual furrows 62 should be fairly pointed radially outward to when molded, a heat distribution in this To create connection area that melts well allows.
- the one achieved by the furrows 62 provides larger surface area for a very secure connection of the two plastics is achieved, with which a high mechanical stability in this area and thus the entire fuel injector and good tightness are guaranteed.
- the quality of the connection between the Overmolding 60 made of plastic and the metal Functional part 30 improved in that at the top, the Connection part 40 facing end 63 of the valve jacket 5 e.g. several grooves are screwed in or rolled up.
- Figure 4 shows a second embodiment of a Functional part 30.
- the fundamental difference compared to the previous one described embodiment is that a Fuel filter 44 'is arranged on the functional part 30, and either in addition to that already on the connector part 40 attached fuel filter 44 or advantageously instead of the fuel filter 44 on the connector 40.
- the one in Area of step 66 relatively large diameter of the opening 11 of the valve sleeve 6 allows the use of a Flat filter instead of one (shown in Figure 1) Basket filter.
- the mesh screen can also be curved, as can be seen from Figure 4. It offers itself as Screen mesh to use a metal filter cloth, which at a sufficient mesh size of 30 ⁇ m Has filter surface. While handling the pre-assembled functional part 30 to final assembly with the connector 40 is thus guaranteed that none Dirt particles in the interior of the functional part 30 reach.
- FIG. 5 shows the electrical connection area with the electrical Connection elements 34, 59 in a schematic representation
- Figures 6A to 6C three embodiments for Contact pins 59 of the connector 40 corresponding to one Section along the line VI-VI in Figure 5
- Figure 7A to 7D four embodiments for contact sockets 34 of the Functional part 30 corresponding to a section along the Show line VII-VII in Figure 5.
- the electrical connecting elements 59 of the connecting part 40 5 are pin-shaped as in FIGS Contact pins 59 executed. They have at their ends Contact pins 59, for example insertion bevels 68, with those who establish the electrical connection with the corresponding connecting elements 34 of the Functional part 30 is facilitated.
- the cross sections of the contact pins 59 e.g. rectangular (Figure 6A), largely square ( Figure 6B) or circular ( Figure 6C).
- FIG Connecting element 59 is designed pin-shaped, it is expediently the corresponding connecting element 34 Form bush-shaped to ensure safe and reliable to realize electrical connection.
- Figure 7 are Examples of socket-like, eye-like, bracket-like, cable shoe-shaped, but also pin-shaped Connection elements 34 shown. The show the Magnetic coil 1 ends of the connecting elements 34 facing away also bevels 68 '.
- Figure 7A shows one conventional cable lug 70, the one like a clamp Can reach around pin 59. Different for inclusion Large contact pins 59, the cable lug 70 can be elastic be executed.
- FIG. 7B shows a double cable lug 71, which is used for two different contact pin types 59 can be.
- FIG. 7C and 7D show two variants of one Profile connector 34, the connector 34 according to FIG. 7C as an L-profile pin 72 and that Connecting element 34 according to FIG. 7D as a flat profile pin 73 are executed.
- the latter two variants enclose the contact pins 59 to be contacted not, there is rather a contact through tight Issue. After making the electrical connection can also be fixed by an additional Spot welds are supported before overmolding 60 is attached.
- electrical connecting elements 34 on the functional part 30 in Provide pin shape while the electrical Connecting elements 59 of the connecting part 40 rather Bush-like, loop-like or cable lug-shaped would.
- Another option is one at a time plug-like and socket-like connecting element 34, 59 on the functional part 30 and on the connecting part 40, which then interact with each other.
- a Electrical contacting can also be used, for example can be achieved with the CIN :: APSE® technology, with the Gold-coated molybdenum wires as a button contact are formed like a ball. This solderless Connection technology allows the very manufacturing reliable electrical connections that are mechanical are completely free of resonance.
- Figure 8 shows a second embodiment of a Connection part 40.
- the opposite to that in Figure 1 or 2nd illustrated embodiment constant or components with the same effect are the same Reference numbers marked.
- Connection part 40 of Figure 8 especially in the area of End region 47 is formed modified.
- a step 76 is provided, which as Guide covenant for those indicated with a dashed line Valve sleeve 6 of the functional part 30 is used.
- an upper Sleeve section surrounds the valve sleeve 6 e.g. attached to the Stage 76 in the assembled state of the valve.
- the at least one segment 77 has thereby has an arcuate shape and is radial Viewed in the direction formed at a distance from the step 76, but not directly on the outer periphery of the connector 40, on which the one indicated with a dash-two-dot line Overmolding 60 completes.
- Figure 9 is a bottom view in the direction of arrow IX shown on the connecting part 40 according to Figure 8. It is to recognize that on the connecting part 40 three segments 77th are provided, all of which are designed in the shape of a circular arc are different, for example Have extension lengths in the circumferential direction. by virtue of the contact pins 59 this may be necessary. The Segments 77 are only a short distance apart.
- the segments 77 are e.g. yet slightly beyond the central end region 47.
- segments 77 thus extend from the connecting part 40 axially in the space for the fixed connection of the connecting part 40 and functional part 30 required extrusion 60.
- the volume of the extrusion coating area is increased by approx. 30% and the maximum wall thickness of the extrusion coating 60 by approx. 50% compared to the extrusion coating 60 shown in FIG. 1 reduced.
- Figure 8 it is indicated that the Segments 77 an inner overmold area 60a and Outer overmold area 60b result from the overmolding be filled with plastic, the two then extrusion sections created by plastic between the segments 77 or below the segments 77 are interconnected. In this way, the Segments 77 embedded after molding Overmolding 60 before.
- the segments 77 are arranged such that Mass accumulations within the extrusion coating 60 are eliminated and the wall thicknesses are even. Furthermore, it is advantageous to arrange the segments 77 so that when Overmolding a strong swirling of the flowing Plastic takes place.
- Figure 10 shows another in a bottom view Embodiment of a connector 40.
- three segments 77 projecting into the later extrusion coating 60 provided with a small segment 77 between the two Contact pins 59 is arranged and the other two Segments 77 in the shape of a circular arc, each over approximately 120 ° extend.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (16)
- Brennstoffeinspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem erregbaren Betätigungselement (1, 2, 5), mit einem bewegbaren Ventilschließkörper (19), der mit einem einem Ventilsitzkörper (15) zugeordneten Ventilsitz (16) zusammenwirkt, mit einem elektrischen Anschluß (55, 56, 57) und mit einem hydraulischen Anschluß (42, 43), mit einem vormontierten Funktionsteil (30) und einem vormontierten Anschlußteil (40), wobei das Funktionsteil (30) im wesentlichen das Betätigungselement (1, 2, 5), ein Dichtventil aus Ventilsitzkörper (15) und Ventilschließkörper (19), erste elektrische Verbindungselemente (34) und erste hydraulische Verbindungselemente (28) umfaßt, und das Anschlußteil (40) den elektrischen Anschluß (55, 56, 57), den hydraulischen Anschluß (42, 43), zweite elektrische Verbindungselemente (59) und zweite hydraulische Verbindungselemente (43) besitzt, wobei das Funktionsteil (30) und das Anschlußteil (40) eigenständige Baugruppen bilden, die fest miteinander mittels einer im Verbindungsbereich beider Baugruppen (30, 40) angebrachten Umspritzung (60) verbunden sind, und durch das Zusammenwirken der ersten und zweiten elektrischen Verbindungselemente (34, 59) und der ersten und zweiten hydraulischen Verbindungselemente (28, 43) eine zuverlässige elektrische und hydraulische Verbindung beider Baugruppen (30, 40) gewährleistet ist.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß das Anschlußteil (40) weitgehend ein Kunststoffkörper ist, der einen Brennstoffeinlaßstutzen als Grundkörper (42) mit einer durchgehenden Strömungsbohrung (43) bildet, wobei am Grundkörper (42) ein elektrischer Anschlußstecker (56) ausgeformt ist.
- Brennstoffeinspritzventil nach Anspruch 2, dadurch gekennzeichnet, daß der für die Umspritzung (60) gewählte Kunststoff bei einer höheren Temperatur seinen Schmelzpunkt hat als der für das Anschlußteil (40) verwendete Kunststoff.
- Brennstoffeinspritzventil nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß am äußeren Umfang des Grundkörpers (42) eine Labyrinthdichtung (61) mit mehreren Rillen oder Furchen (62) ausgeführt ist, die von der Umspritzung (60) überdeckt ist.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß am Anschlußteil (40) wenigstens ein axial in Richtung zum Funktionsteil (30) herausstehendes Segment (77) vorgesehen ist, das nach dem Umspritzvorgang in der Umspritzung (60) eingebettet vorliegt.
- Brennstoffeinspritzventil nach Anspruch 5, dadurch gekennzeichnet, daß das wenigstens eine Segment (77) kreisbogenförmig ausgebildet ist.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Funktionsteil (30) eine dünnwandige Ventilhülse (6) hat, in deren innerer Öffnung (11) der Ventilsitzkörper (15), die Ventilnadel (14) und ein Kern (2) als Innenpol eingebracht sind und die von einer Magnetspule (1) umgeben ist, wobei die Magnetspule (1) zumindest teilweise von einem Ventilmantel (5) als Außenpol umschlossen ist.
- Brennstoffeinspritzventil nach Anspruch 7, dadurch gekennzeichnet, daß der Ventilmantel (5) an seinem dem Anschlußteil (40) zugewandten Ende (63) mehrere Rillen aufweist.
- Brennstoffeinspritzventil nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Ventilhülse (6) des Funktionsteils (30) so ausgeführt ist, daß sie im montierten Zustand des Brennstoffeinspritzventils einen in die Öffnung (11) hineinragenden Endbereich (47) des Anschlußteils (40) umhüllt.
- Brennstoffeinspritzventil nach Anspruch 9, dadurch gekennzeichnet, daß am Endbereich (47) des Anschlußteils (40) ein Dichtring (51) angeordnet ist.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß im Funktionsteil (30) ein Brennstoffilter (44') integriert ist.
- Brennstoffeinspritzventil nach Anspruch 11, dadurch gekennzeichnet, daß der Brennstoffilter (44') als Siebgeflecht ein Metallfiltergewebe besitzt.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zweiten elektrischen Verbindungselemente (59) des Anschlußteils (40) steckerähnlich und/oder buchsenähnlich und die ersten elektrischen Verbindungselemente (34) des Punktionsteils (30) steckerähnlich und/oder buchsenähnlich ausgeführt sind.
- Brennstoffeinspritzventil nach Anspruch 13, dadurch gekennzeichnet, daß die ersten elektrischen Verbindungselemente (34) des Funktionsteils (30) buchsenartig, ösenartig, klammerartig, kabelschuhförmig oder profiliert ausgeführt sind.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Anschlußteil (40) und/oder das Funktionsteil (30) separat vormontierte Unterbaugruppen besitzt.
- Brennstoffeinspritzventil nach Anspruch 2, dadurch gekennzeichnet, daß der elektrische Anschlußstecker (56) in einem Verbindungsbereich mit dem Grundkörper (42) verbindbar ist, wobei elektrische Verbindungselemente zur Herstellung einer zuverlässigen elektrischen Verbindung miteinander korrespondieren.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19827137 | 1998-06-18 | ||
DE19827137 | 1998-06-18 | ||
DE19853102 | 1998-11-18 | ||
DE19853102A DE19853102A1 (de) | 1998-06-18 | 1998-11-18 | Brennstoffeinspritzventil |
PCT/DE1999/001476 WO1999066196A1 (de) | 1998-06-18 | 1999-05-18 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1030967A1 EP1030967A1 (de) | 2000-08-30 |
EP1030967B1 true EP1030967B1 (de) | 2003-08-06 |
Family
ID=26046882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99936257A Expired - Lifetime EP1030967B1 (de) | 1998-06-18 | 1999-05-18 | Brennstoffeinspritzventil |
Country Status (4)
Country | Link |
---|---|
US (1) | US6299079B1 (de) |
EP (1) | EP1030967B1 (de) |
JP (1) | JP4243430B2 (de) |
WO (1) | WO1999066196A1 (de) |
Cited By (1)
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US11098685B2 (en) | 2019-02-19 | 2021-08-24 | Caterpillar Inc. | Fuel injector assembly having external filter and method of making same |
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US6533188B1 (en) | 2000-12-29 | 2003-03-18 | Siemens Automotive Corporation | Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and dynamic adjustment assembly |
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US6499677B2 (en) * | 2000-12-29 | 2002-12-31 | Siemens Automotive Corporation | Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and dynamic adjustment assembly |
US6655609B2 (en) | 2000-12-29 | 2003-12-02 | Siemens Automotive Corporation | Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and o-ring retainer assembly |
US6565019B2 (en) | 2000-12-29 | 2003-05-20 | Seimens Automotive Corporation | Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and O-ring retainer assembly |
US6695232B2 (en) | 2000-12-29 | 2004-02-24 | Siemens Automotive Corporation | Modular fuel injector having interchangeable armature assemblies and having a lift set sleeve |
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US6523761B2 (en) | 2000-12-29 | 2003-02-25 | Siemens Automotive Corporation | Modular fuel injector having an integral or interchangeable inlet tube and having a lift set sleeve |
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US6648247B2 (en) | 2001-02-02 | 2003-11-18 | Siemens Automotive Corporation | Combined filter and adjuster for a fuel injector |
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DE102004047041B4 (de) * | 2004-09-28 | 2017-06-14 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
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-
1999
- 1999-05-18 US US09/485,967 patent/US6299079B1/en not_active Expired - Lifetime
- 1999-05-18 WO PCT/DE1999/001476 patent/WO1999066196A1/de not_active Application Discontinuation
- 1999-05-18 EP EP99936257A patent/EP1030967B1/de not_active Expired - Lifetime
- 1999-05-18 JP JP2000554985A patent/JP4243430B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11098685B2 (en) | 2019-02-19 | 2021-08-24 | Caterpillar Inc. | Fuel injector assembly having external filter and method of making same |
Also Published As
Publication number | Publication date |
---|---|
JP4243430B2 (ja) | 2009-03-25 |
EP1030967A1 (de) | 2000-08-30 |
WO1999066196A1 (de) | 1999-12-23 |
JP2002518632A (ja) | 2002-06-25 |
US6299079B1 (en) | 2001-10-09 |
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