EP2299101B1 - Soupape magnétique dotée d'une unité de commande contactée directement - Google Patents

Soupape magnétique dotée d'une unité de commande contactée directement Download PDF

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Publication number
EP2299101B1
EP2299101B1 EP20100171086 EP10171086A EP2299101B1 EP 2299101 B1 EP2299101 B1 EP 2299101B1 EP 20100171086 EP20100171086 EP 20100171086 EP 10171086 A EP10171086 A EP 10171086A EP 2299101 B1 EP2299101 B1 EP 2299101B1
Authority
EP
European Patent Office
Prior art keywords
contact
solenoid valve
connection piece
housing
magnetic
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.)
Not-in-force
Application number
EP20100171086
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German (de)
English (en)
Other versions
EP2299101A1 (fr
Inventor
Thomas Hohe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2299101A1 publication Critical patent/EP2299101A1/fr
Application granted granted Critical
Publication of EP2299101B1 publication Critical patent/EP2299101B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0019—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of electromagnets or fixed armatures
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8038—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of adhesives, glue or the like
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8046—Fuel injection apparatus manufacture, repair or assembly the manufacture involving injection moulding, e.g. of plastic or metal
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure

Definitions

  • the invention relates to a solenoid valve, in particular the control unit of a solenoid valve for a fuel injector of a high-pressure injection system.
  • a solenoid valve for controlling a fuel injector is known.
  • the solenoid valve comprises a housing, which consists of a magnetic guide sleeve, a discharge nozzle and an injector cap.
  • a magnet pot in which a magnetic coil is accommodated. When energized, this magnetic coil generates a magnetic field which pulls a magnet armature up against a spring force and thus actuates the solenoid valve.
  • the injector cap serves as electrical insulation of the contacts and as a protective cap against mechanical deformation of the contact pins.
  • DE 198 32 826 A1 discloses a solenoid valve for controlling a fuel injector, in particular a two- or multi-part solution for the electrical connection with plug or weld connection between the contact pin of the solenoid and the contacting element of the injector in the injector.
  • solenoid valves are for the realization of short drive times and a high, reproducible Druckgeriaumaschinefug in the assembly and testing of the valve numerous complex operations for fine adjustment, such as the Magnetankerhubs or the spring preload, necessary.
  • the injector cap is manufactured as one of the last operations after the control unit is largely completely assembled, as injection molded cap made of non-conductive polymer material. Due to the unsolvable design of the component network of the control unit, the final tests of the fuel injector can be performed only after this operation, so that in a negative test result, the entire control unit must be disposed of as broke, which leads to considerable costs even at low error rates.
  • control valve according to the invention with the features of claim 1 is compared with previously known technical solutions of fewer items, making it cheaper and easier to manufacture.
  • the areas of the fuel return and the electrical contacting of the control valve are designed such that the control valve can be assembled in less assembly steps.
  • the production-related reject rate and the associated error costs decrease due to simpler and more stable controlled production steps.
  • the robustness of the valve against mechanical damage is increased. This is u.a. achieved in that the control unit of the solenoid valve consists of a preferably two-part housing in which a magnetic core is arranged with a recessed magnetic coil, wherein two deep-hole-shaped recesses are formed in the housing.
  • At least one insulating sleeve is arranged in each of these recesses, which surrounds contact pins for driving the magnetic coil, wherein access holes are formed in the housing, which allow access to contact surfaces of the contact pins.
  • the contact pins do not protrude beyond the outer contour of the housing in order to avoid damage to the contact pins.
  • a first embodiment of the solenoid valve is characterized in that the electrical contacting of the control unit of the solenoid valve via a contact ring consisting of preferably two contact pins, at least one lying over the contact pins insulation sleeve and each contact pin a sealing element, wherein the contact ring on the contact pins of the magnetic coil is either plugged or connected by a cohesive, non-positive or positive connection, for example by welding, soldering or a crimp, firmly connected to the contact pins of the solenoid.
  • contact ring can be prefabricated or preassembled as an assembly and thus reduces the assembly effort of the solenoid valve.
  • the insulating sleeve of the contact ring at an end remote from the magnetic core of the contact pins has an insulation cap which is connected via at least one web so with the rest of the insulating sleeve, that the contact pin is exposed in the region of the webs, so that the contact pins are not electrically isolated only in this area.
  • the material of the insulating sleeve is preferably made of an electrically non-conductive plastic.
  • the unit of contact pin and contact pin of the magnetic coil can consist of only one continuous contact pin.
  • the insulation sleeve is applied to the contact pins of the magnetic coil.
  • the insulation cap is made of a non-conductive polymer material, preferably an elastomer, wherein the insulation cap on the outer diameter of the insulation of the contact pins have an allowance relative to the inner diameter of the holes in the housing, preferably with respect to the inner diameter of the bores of a housing part forming outlet, so that the insulation sleeve the area inside the housing against leakage of fuel or liquid penetration seals.
  • a base plate is formed on the magnetic core side facing the contact ring, which can accommodate a stroke stop for the armature, such as a support plate and / or a throttle for the injector return.
  • this base plate is formed by a suitable shape and choice of material such that it can be clamped similar to a plate spring between the magnetic core and the stroke stop for the armature, so that the magnetic core pressed into the housing part forming a magnetic sleeve and on the other side of the Stroke stop is pressed against the another housing part forming outlet nozzle.
  • This development is particularly advantageous because the magnetic core and the stroke stop can be securely fixed in the housing without further components.
  • an increase is pronounced on the contact ring and a corresponding depression in the opposite end face of the downcomer, so that twisting of the contact ring with respect to the downcomer is reliably avoided.
  • an increase in the discharge nozzle and a corresponding corresponding recess in the contact ring may be formed.
  • An advantage of this design is increased security against rotation of the contact ring, esp. In the assembly processes before the contact ring is connected to the solenoid.
  • a chamber is formed at the bottom of the access hole in the discharge nozzle or in the region of the intersections between the access holes and the holes in the discharge nozzle.
  • the discharge nozzle which forms part of the housing, is made of plastic or as a MIM (Metal Injected Molding) component. It is advantageous here that the production costs for an injection molded part are significantly lower for large quantities than for a corresponding rotary part with a similar geometry.
  • the outlet pipe is designed as an injection molded part with inserted welding ring, which can be permanently connected to the outlet sleeve forming a further magnetic sleeve, so that no liquid leak from the housing or from the outside into the via the connection point between drain pipe and magnetic sleeve Housing can penetrate.
  • a central return bore is formed in the housing, preferably in the outlet part forming a housing part, in which a return line can be fixed via a special geometry.
  • control valve is characterized in that the contact ring is plugged with a detachable plug connection to the contact pins of the magnetic coil.
  • This solution also has the advantage that the valve can be tested for function before the two housing parts are welded together.
  • This solution has the advantage that when the setpoints are not reached in a functional test, the control unit can be dismantled and readjusted without having to write off the complete control unit as a reject part.
  • a fuel injector 10 known from the prior art is shown in sectional view.
  • the fuel injector 10 comprises an injection nozzle 12, an injector body 11, on which a high pressure port 15 is formed laterally, and a solenoid valve 18, which consists of a valve piece 20, a magnet armature 28 and a control unit 30.
  • a valve piston 14 and a valve member 20 are arranged coaxially in a bore. Between the valve member 20 and the injector body 11 is an annular space 21, which with the high pressure port 15 in direct Connection stands.
  • the injection nozzle 12 consists of a nozzle body 16 and a nozzle needle 13, wherein at least one injection hole 17 is formed on the nozzle body 16 in the tip region, can be injected through the fuel into a combustion chamber of an internal combustion engine.
  • a control chamber 23 is formed, which is connected via an inlet throttle 22 with the annular space 21 of the fuel injector 10.
  • a valve seat 25th At the magnet armature 28 facing end face of the valve member 20 is a valve seat 25th
  • valve seat 25 and the control chamber 22 are connected by an outlet throttle 24, wherein a valve ball 26 so cooperates with the valve seat 25, that the outlet throttle 24 is closed by the valve ball 26 in the case of a non-actuated control unit 30.
  • valve ball 26 is fixed by a ball guide 27 on the armature 28 in its position.
  • control unit 30 which is bolted to the injector body 11 via a magnetic clamping nut 31, corresponds to the prior art and comprises a magnetic core 33 with a recessed magnetic coil 35, a magnetic sleeve 32, a discharge nozzle 51 and is driven via an electrical connection 50, which from in each case two flat plugs 46 and two contact pins 41, which are connected to each other via a respective plug connection element 62, wherein the contact pins 41 constitute a part of the magnetic coil 35.
  • the control unit 30 When the control unit 30 is energized, the magnetic coil 35 in the magnetic core 33 generates a magnetic force which corresponds to the magnetic field in the magnetic core 33 Fig.
  • the control unit 30 has a in the Fig. 3a and Fig. 3b shown plate spring 37, which braces the magnetic core 33 and a holding plate 39 against each other.
  • the valve spring 29 is guided at one end by the anchor pin 45, which is formed at the upper end of the armature 28, and at the other end of the holding plate 39.
  • the magnet armature 28 is guided through the guide bore 34 in the magnetic core 33.
  • the magnetic coil 35 in the magnetic core 33 comprises two contact pins 41, which together with a fixed at the end of the contact pins 41 plug connection elements 62 and the tabs 46 form the electrical connection 50.
  • the contact pins 41 are guided in the holding plate 39 by a respective support plate 38.
  • Via sealing elements 44 which are located in the holding plate 39 above the support plate 38, the fuel-carrying region is sealed in the control unit 30 and thus prevents a fuel leak along the electrical connection 50th
  • the electrical connection 50 is protected by a non-conductive injector cap 63, which extends from the magnetic sleeve 32 to the drain port 51, against mechanical damage and short to ground with metallic injector components.
  • the control unit 30 comprises a housing 32,51, here consisting of a magnetic sleeve 32 and a discharge nozzle 51.
  • this housing 32,51 can also be made in one piece.
  • this housing 32,51 of the magnetic core 33 is arranged, which is supported on a shoulder 64 of the magnetic sleeve 32.
  • a magnetic coil 35 is received with contact pins 41.
  • These contact pins 41 are each encased by an insulating sleeve 49, wherein the insulation sleeves 49 are located in two bores 56 formed in the outlet nozzle 51.
  • each contact pin 41 serves to electrically insulate the contact pins 41 against the metallic outlet connection 51.
  • This insulation cap 42 is followed by a region where the contact pin 41 is at least partially freed at the electrically conductive surface and thus contact surfaces 48 on the contact pins 41 allow electrical contacting of the magnetic coil 35.
  • the insulating sleeve 49 can also be made in several parts, wherein the insulation cap 42 is then not connected to the insulating sheath of the remaining insulating sleeve 49 and the area of the contact surface 48 is not protected by a web 43 on the contact pin 41.
  • a sealing element 44 is arranged on the outer surface of the insulation sleeve 49 on each casing of the contact pins 41, which prevents fuel leakage along the path of the electrical connection 50.
  • the insulating sleeve 49 itself can be made of a hydraulically sealing material and be pressed into the holes 56, that a comparable sealing effect is formed.
  • Fig. 5a showed a longitudinal section through a contact ring 40, which is an assembly consisting of contact pins 41, insulating sleeve 49 with molded webs 43, the insulation cap 32 and sealing elements 44.
  • a short contact pin 36 is present on the magnet coil 35, wherein the contact pins 36 of the magnetic coil 35 are fixedly connected to the contact pins 41 of the contact ring.
  • the connection of contact pin 36 and contact pin 41 can be carried out as a releasable plug connection, wherein one of the contact elements 36,41 are designed as a socket into which the other contact element 36,41 can be inserted.
  • a base plate 57 is formed, which is located on the magnetic core 33 facing the front side of the contact ring 40.
  • the base plate 57 has at its inner diameter an Anformung 65 for receiving a support plate 38.
  • the base plate 57 formed such that the Anformung 65 for receiving the support plate 38 includes two lateral edges 66, which are suitable for guiding a valve spring 29.
  • the in Fig. 6a and Fig. 6b illustrated drain port 51 represents a housing part of the control unit 30 of the solenoid valve 18 and has a central return bore 52 for connection to a return line, not shown.
  • two bores 56 are formed, which are suitable for receiving the contact ring 40 or the insulating sleeves 49.
  • the contacting of the contact surfaces 48 on the contact pins 41 via the access holes 53 in the housing 32,51, these access holes 53 are preferably formed in the drain port 51.
  • the access holes 53 meet in an intersection on the bore 56 in the drain port 51, wherein the decision is ideally at the height of the contact surface 48 on the contact pin 41.
  • a chamber 61 is formed in the region of the intersection of the bores 56 and the access holes 53 in the drain port 51, in which an external contact plug can engage.
  • a chamber 61 is not necessarily required for the control valve and may also be omitted.
  • contact surfaces 59 are formed, via which the drain neck can be fixed to a further housing part 32.
  • a welding ring 60 can be injected into the contact surface 59 in order to improve the connectability to the further housing part 32.
  • each method is suitable for the connection of the outlet nozzle with the further housing part 32, which results in a result in a permanently hydraulically sealed connection of the two housing parts 32,51.

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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)

Claims (13)

  1. Electrovanne pour la commande d'un injecteur de carburant (10) comprenant un boîtier (32, 51), le boîtier comprenant une tubulure d'écoulement (51) et une douille magnétique (32) dans laquelle est disposé un noyau magnétique (33) avec une bobine magnétique incorporée (35), deux alésages (56) étant réalisés dans la tubulure de sortie (51), dans lesquels est disposée à chaque fois une douille d'isolation (49) qui entoure une goupille de contact (41) pour la commande de la bobine magnétique (35), et des alésages d'accès (53) étant réalisés dans la tubulure d'écoulement (51), lesquels permettent un accès à une surface de contact (48) des goupilles de contact (41), caractérisée en ce que la goupille de contact (41) est fixée directement dans la bobine magnétique (35) et la douille d'isolation (49), sur laquelle sont réalisés un capuchon d'isolation (42), une nervure (43) et une surface d'isolation supplémentaire, est disposée de telle sorte que la goupille de contact (41) soit exposée dans la région des évidements de la nervure (43).
  2. Electrovanne selon la revendication 1, caractérisée en ce que le contact électrique de l'unité de commande (30) d'une électrovanne (18) s'effectue par le biais d'une bague de contact (40) qui se compose de deux goupilles de contact (41) et d'au moins une douille d'isolation (49), les goupilles de contact (41) de la bague de contact (40) étant connectées fermement par exemple par soudage, brasage ou par une connexion par écrasement, à des broches de contact (36) de la bobine magnétique (35).
  3. Electrovanne selon la revendication 2, caractérisée en ce que sur la bague de contact (40) est réalisée une douille d'isolation (49) avec un capuchon d'isolation (42) et une nervure (43), de préférence sous la forme d'un surmoulage de plastique non conducteur, de sorte que la goupille de contact (41) soit exposée dans la région des évidements des nervures (43) ainsi que dans la région de contact entre la goupille de contact (41) de la bague de contact (40) et la broche de contact (36) de la bobine magnétique (35).
  4. Electrovanne selon les revendications 1 à 3, caractérisée en ce que la douille d'isolation (49) se compose d'un matériau polymère non conducteur, de préférence d'un élastomère, possède un dimensionnement approprié par rapport au diamètre des alésages (56) dans la tubulure d'écoulement (51), qui forme une partie du boîtier (32, 51), et est pressée dans les alésages (56) de telle sorte que du carburant ne puisse pas sortir par les alésages (56) et les alésages d'accès (53) hors du boîtier (32, 51).
  5. Electrovanne selon l'une quelconque des revendications 2 à 4, caractérisée en ce qu'une plaque d'embase (57) est réalisée sur le côté de la bague de contact (40) tourné vers le noyau magnétique (33), laquelle peut recevoir une butée de levage pour l'armature magnétique (28), par exemple sous la forme d'une plaque de support (38).
  6. Electrovanne selon la revendication 5, caractérisée en ce que la plaque d'embase (57) de la bague de contact (40) est réalisée avec une forme et un choix de matériau appropriés de telle sorte qu'elle soit serrée à la manière d'un ressort Belleville entre le noyau magnétique (33) et la plaque de support (38), de telle sorte qu'elle presse le noyau magnétique (33) dans la douille magnétique (32), qui forme une partie du boîtier (32, 51), et la plaque de support (38) contre la tubulure d'écoulement (51), qui forme une partie du boîtier.
  7. Electrovanne selon l'une quelconque des revendications 2 à 6, caractérisée en ce que sur la bague de contact (40) et la surface frontale (58) de la tubulure d'écoulement (51) sont réalisés au moins un rehaussement opposé de l'un des composants (40, 51) ainsi qu'au moins un renfoncement de l'autre composant respectif (40, 51), de sorte qu'une rotation de la bague de contact (40) par rapport à la tubulure d'écoulement (51) soit empêchée par engagement par correspondance géométrique.
  8. Electrovanne selon les revendications 1 à 7, caractérisée en ce qu'au fond des alésages d'accès (53) dans la tubulure d'écoulement (51) ou dans la région de l'intersection entre les alésages d'accès (53) et les alésages (56) dans la tubulure d'écoulement (51) est réalisée une chambre (61), qui facilite l'accès aux surfaces de contact (48) des goupilles de contact (41) ou dans laquelle peut être fixé, par engagement par correspondance géométrique, un connecteur enfichable.
  9. Electrovanne selon les revendications 1 à 8, caractérisée en ce que la tubulure d'écoulement (51) est réalisée sous forme de composant moulé par injection de plastique, avec une bague de soudage (60) incorporée sur la surface de contact (59) de la tubulure d'écoulement (51).
  10. Electrovanne selon les revendications 1 à 9, caractérisée en ce que la tubulure d'écoulement (51) est connectée à la douille magnétique (32) de telle sorte qu'aucun liquide ne puisse pénétrer hors du boîtier (32, 51) vers l'extérieur ou depuis l'extérieur dans le boîtier (32, 51) par le biais du point de connexion (54) entre la surface de contact (59) de la tubulure d'écoulement (51) et la douille magnétique (32).
  11. Electrovanne selon la revendication 10, caractérisée en ce que le point de connexion (54) est réalisé sous forme de point soudé, brasé ou collé.
  12. Electrovanne selon les revendications 1 à 11, caractérisée en ce que la tubulure d'écoulement (51), qui constitue une partie du boîtier (32, 51), dispose d'un alésage de retour central (52) pour recevoir une conduite de retour (55).
  13. Injecteur de carburant (10), caractérisé en ce que l'injecteur de carburant (10) contient une électrovanne avec une unité de commande (30) selon l'une quelconque des revendications 1 à 12.
EP20100171086 2009-09-17 2010-07-28 Soupape magnétique dotée d'une unité de commande contactée directement Not-in-force EP2299101B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910029529 DE102009029529A1 (de) 2009-09-17 2009-09-17 Magnetventil mit direkt kontaktierter Steuereinheit

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EP2299101A1 EP2299101A1 (fr) 2011-03-23
EP2299101B1 true EP2299101B1 (fr) 2012-09-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012224415A1 (de) 2012-12-27 2014-07-03 Robert Bosch Gmbh Magnetventil mit eingepresstem Dichtelement

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IT213013Z2 (it) * 1987-11-24 1989-10-13 Weber Srl Bobina di eccitazione per una valvola di dosatura e di polverizzazione del carburante per un dispositivo ad iniezione del carburante in un motore a combustione interna
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil
IT1293433B1 (it) * 1997-07-11 1999-03-01 Elasis Sistema Ricerca Fiat Valvola di dosaggio registrabile per un iniettore di combustibile per motori a combustione interna, e relativo metodo di registrazione.
DE19832826C2 (de) 1998-07-21 2000-08-17 Bosch Gmbh Robert Montageverfahren für Kraftstoff-Einspritzventil und Vorsteuerventil sowie Kraftstoff-Einspritzventil
DE10240879A1 (de) * 2002-09-04 2004-03-18 Robert Bosch Gmbh Injektorgeführter Ventilkolben
DE10240880B4 (de) * 2002-09-04 2016-12-01 Robert Bosch Gmbh Aktorverbindung an Kraftstoffinjektoren von Verbrennungskraftmaschinen
US6994559B1 (en) * 2004-08-20 2006-02-07 Siemens Aktiengesellschaft Device for the electrical connection of contact pins to connecting pins of a plug-in connector formed from the device
DE102004056667A1 (de) * 2004-11-24 2006-06-01 Robert Bosch Gmbh Elektrische Überbrückung in Kraftstoffinjektoren
DE102005039551A1 (de) * 2005-08-22 2007-03-01 Robert Bosch Gmbh Piezoaktor mit zweiteiligem Haltekörper
DE102005057953A1 (de) * 2005-12-05 2007-08-02 Robert Bosch Gmbh Niederhaltung einer Magnetgruppe in einem Brennstoffinjektor
DE102006036106A1 (de) * 2006-08-02 2008-02-07 Siemens Ag Kontaktvorrichtung und Verfahren zum Herstellen einer Kontaktvorrichtung zur elektrischen Kontaktierung eines Piezo-Aktors eines Injektors
EP1961951B1 (fr) * 2007-02-22 2010-01-27 Continental Automotive GmbH Connecteur électrique et procédé pour le couplage d'un connecteur électrique sur une unité d'actionnement
EP2003327A1 (fr) * 2007-06-13 2008-12-17 Continental Automotive GmbH Unité d'actionneur pour soupape d'injection, et soupape d'injection
DE102007052204A1 (de) * 2007-10-30 2009-05-07 Robert Bosch Gmbh Spulenkontaktierung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012224415A1 (de) 2012-12-27 2014-07-03 Robert Bosch Gmbh Magnetventil mit eingepresstem Dichtelement

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EP2299101A1 (fr) 2011-03-23
DE102009029529A1 (de) 2011-03-24

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