EP2126332B1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
EP2126332B1
EP2126332B1 EP08708598A EP08708598A EP2126332B1 EP 2126332 B1 EP2126332 B1 EP 2126332B1 EP 08708598 A EP08708598 A EP 08708598A EP 08708598 A EP08708598 A EP 08708598A EP 2126332 B1 EP2126332 B1 EP 2126332B1
Authority
EP
European Patent Office
Prior art keywords
press
fit
region
fuel injection
component
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
EP08708598A
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German (de)
English (en)
Other versions
EP2126332A1 (fr
Inventor
Marc-Jean Derenthal
Wolfgang Koschwitz
Johann Bayer
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2126332A1 publication Critical patent/EP2126332A1/fr
Application granted granted Critical
Publication of EP2126332B1 publication Critical patent/EP2126332B1/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
    • 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
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • a fuel injection valve which comprises an electromagnetic actuator with a magnetic coil, with an inner pole and with an outer magnetic circuit component and a movable valve closing body, which cooperates with a valve seat body associated valve seat.
  • the valve seat body and the inner pole are arranged in an inner opening of a thin-walled valve sleeve and the magnet coil and the outer magnetic circuit component on the outer circumference of the valve sleeve.
  • the magnetic circuit component formed in the form of a magnet pot is first pushed onto the valve sleeve, then the valve seat body pressed into the inner opening of the valve sleeve, so that solely by pressing in the valve seat body, a firm connection of the valve sleeve and magnetic circuit component is achieved.
  • the inner pole is subsequently fixed by pressing in the valve sleeve.
  • a fuel injection valve for fuel injection systems of internal combustion engines which has a valve longitudinal axis, an excitable actuator for actuating a valve closing body, which cooperates with a provided on a valve seat body valve seat surface, and at least one ejection opening.
  • the fuel injection valve has a plurality of metallic components, wherein in particular an inner serving as a core inner pole and an outer tubular housing member are firmly connected to each other by pressing.
  • two unstructured surfaces of these components corresponding to one another form the pressing partners.
  • this pressing region is followed by a recessed area, which arises due to the defined fixed length of the pressing region and which then turns into a radially larger caulking.
  • the inner pole In the caulking area, the inner pole has a knurled surface at its upstream end.
  • the caulking or crimping in the Verstemm Scheme carried out by means of a caulking, so that in this area a firm connection of the inner pole and outer housing component can be generated.
  • a fuel injection valve which is equipped with an excitable actuator for actuating a valve closing body, which cooperates with a provided on a valve seat body valve seat surface, and with at least one injection orifice, and with metallic components which are fixedly connected by pressing together.
  • connection region of a core serving as an inner pole and a valve sleeve is formed such that, starting from the pressing region of the core only a recessed area and then following a radially outwardly protruding pressing lip on the outer contour of this core, the press lip so with the opposite Valve sleeve corresponds that between the pressing region and the pressing lip, a cavity is formed by the recessed area in which the dirt generated during the pressing can be retained.
  • the fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that it is inexpensive to produce in a particularly simple manner.
  • Metallic components of the fuel injection valve characterized in that the sliding of the joining partners during the press-fitting process, the possibly resulting abrasion is reliably and reliably retained and chambered in a resulting from a recessed area and a pressing lip on the outer contour of a joining partner cavity. In this way, a rinse or other expensive cleaning can be omitted.
  • the chambered cavity in the recessed area abrasion is securely stored and thus can not get into other areas of the fuel injector and there lead to functional impairment.
  • press connections between metallic component partners can be produced, which hold securely and reliably over a long period of time while avoiding cold welding and tight.
  • the press connections are very simple and inexpensive to manufacture, since advantageously known and usually necessary separate operations, such as coating or oiling for improved joining of the component partners or heating of the component partners can be dispensed with for shrinking.
  • At least one of the component partners has a structure with grooves in its pressing area and / or the respective pressing area has an inlet rounding in at least one transition to an adjacent component section.
  • the press length can be minimized from the outset.
  • the pressing region of a first component partner is raised in relation to the adjacent sections of this component partner.
  • inlet fillets are provided, which have a relatively large radius.
  • the radii advantageously correspond to an angularity in the transitions of about 0.5 ° to 1.2 °.
  • furrows or groove-like grooves are provided on the surface in addition to the inlet fillets 59 as an additional measure, are repeatedly interrupted by the zones of a possible cold welding. Adverse "feeding zones" of the press connection are largely avoided.
  • the grooves e.g. run around, a high excess, because they are plastically deformed during pressing and leveling something.
  • the generated profile of grooves must have such a strength that at a slight excess, the elongation of a second component partner is still effected.
  • the component partners can not stretch or compress due to their rigidity or if they are too soft in their material, such as soft magnetic chromium steels, which are usually used for the most diverse components of an electromagnetically driven fuel injection valve, cold welds are very likely to occur in known compression joints ("Eater") during the joining process of the pressing, but which are avoided by the inventive measures, in particular on components made of soft magnetic chrome steel. It can be dispensed with elaborate accurate and costly processing methods, such as fine grinding or honing, with which the component tolerances could be narrowed and with considerable effort, the press connections could be improved.
  • soft magnetic chromium steels which are usually used for the most diverse components of an electromagnetically driven fuel injection valve
  • the metal components to be pressed are washed with a cleaner, at least in their respective pressing areas.
  • advantageous lubricant reservoirs are produced in the respective pressing area.
  • the anticorrosive universal cleaner SurTec® 104 or SurTec® 089 or Hitec® E536 from the company Ethyl Corp. Advantageously come as a cleaner. for use.
  • FIG. 1 a fuel injection valve according to the prior art explained with its basic components.
  • electromagnetically actuated valve in the form of an injection valve for fuel injection systems of mixture-compressing, spark-ignition internal combustion engines has a largely surrounded by a magnetic coil 1, serving as réellepol and partially as a fuel flow largely tubular core 2.
  • the magnetic coil 1 is of an outer, sleeve-shaped and stepped running , z.
  • the magnetic coil 1, the core 2 and the valve shell 5 together form an electrically excitable actuator.
  • solenoid coil 1 While embedded in a bobbin 3 solenoid coil 1 surrounds a valve sleeve 6 from the outside, the core 2 in an inner, concentric with a valve longitudinal axis 10 extending opening 11 of the valve sleeve 6 is introduced.
  • the e.g. Ferritic valve sleeve 6 is stretched long and thin-walled.
  • the opening 11 also serves as a guide opening for a valve needle 14 which is axially movable along the valve longitudinal axis 10.
  • the valve sleeve 6 extends in the axial direction, e.g. over more than half the total axial extent of the fuel injector.
  • valve seat body 15 which is attached to the valve sleeve 6, e.g. is fastened by means of a weld 8.
  • the valve seat body 15 has a fixed valve seat surface 16 as a valve seat.
  • the valve needle 14 is formed for example by a tubular anchor portion 17, a likewise tubular needle portion 18 and a spherical valve-closing body 19, wherein the valve closing body 19, for example. is firmly connected to the needle portion 18 by means of a weld.
  • a e.g. cup-shaped spray orifice plate 21 is arranged, the bent and circumferentially encircling retaining edge 20 is directed against the flow direction upwards.
  • valve seat body 15 and spray disk 21 The solid connection of the valve seat body 15 and spray disk 21 is z. B. realized by a circumferential tight weld.
  • armature portion 17 in an inner longitudinal bore 23 fuel passing outwards and on the valve closing body 19, for. can flow along flats 24 to the valve seat surface 16 along.
  • the actuation of the injection valve takes place in a known manner electromagnetically.
  • the electromagnetic circuit with the solenoid coil 1, the inner core 2, the outer valve shell 5 and the anchor portion 17 of the Anchor portion 17 is aligned with the valve closing body 19 facing away from the end of the core 2.
  • the spherical valve closing body 19 cooperates with the valve seat surface 16 of the valve seat body 15, which tapers in the direction of the flow in the direction of flow and which is formed in the axial direction downstream of a guide opening in the valve seat body 15.
  • the spray perforated disc 21 has at least one, for example, four ejection openings 27 formed by erosion, laser drilling or punching.
  • the insertion depth of the core 2 in the injection valve is decisive for the stroke of the valve needle 14.
  • the one end position of the valve needle 14 is fixed to the valve seat surface 16 of the valve seat body 15 when the solenoid valve 1 is not energized, while the other one End position of the valve needle 14 results in energized solenoid coil 1 by the system of the anchor portion 17 at the downstream end of the core.
  • the stroke is adjusted by an axial displacement of the core 2, for example, produced by a machining process such as turning, which is subsequently connected firmly to the valve sleeve 6 according to the desired position.
  • an adjustment in the form of an adjusting sleeve 29 is inserted.
  • the adjusting sleeve 29 serves to adjust the spring bias of the voltage applied to the adjusting sleeve 29 return spring 25, which in turn is supported with its opposite side to the valve needle 14, wherein an adjustment of the dynamic Abspritzmenge with the adjusting sleeve 29.
  • a fuel filter 32 is disposed above the adjusting sleeve 29 in the valve sleeve 6.
  • the injector described so far is characterized by its particularly compact design, so that a very small, handy injection valve is created.
  • These components form a preassembled independent assembly, which is called function part 30 below.
  • the functional part 30 therefore essentially comprises the electromagnetic circuit 1, 2, 5 and a sealing valve (valve closing body 19, valve seat body 15) with a subsequent jet preparation element (spray perforated disk 21) and as the main body the valve sleeve 6.
  • connection part 40 is above all things in that it comprises the electrical and the hydraulic connection of the fuel injection valve.
  • the largely executed as a plastic part connector 40 therefore has a serving as a fuel inlet nozzle tubular body 42.
  • a concentric to the valve longitudinal axis 10 extending flow bore 43 of an inner connecting pipe 44 in the base body 42 serves as a fuel inlet and is flowed through from the inflow end of the fuel injection valve in the axial direction of the fuel ,
  • a hydraulic connection of connecting part 40 and functional part 30 is achieved in the fully assembled fuel injection valve in that the flow holes 43 and 28 of both modules are brought to each other so that an unimpeded flow through the fuel is ensured.
  • a lower end 47 of the connecting tube 44 protrudes into the opening 11 of the valve sleeve 6 in order to increase the stability of the connection.
  • the main body 42 made of plastic can be sprayed onto the functional part 30 so that the plastic immediately surrounds parts of the valve sleeve 6 and of the valve jacket 5.
  • a secure seal between the functional part 30 and the main body 42 of the connecting part 40 is achieved, for example, via a labyrinth seal 46 on the circumference of the valve jacket 5.
  • To the base body 42 includes a mitangespritzter electrical connector 56. At its opposite end of the connector 56, the contact elements with the solenoid coil 1 are electrically connected.
  • FIGS. 2 to 8 metallic components of the fuel injection valve are shown, which are fixedly connected to at least one other metallic component by means of pressing.
  • FIG. 2 a detailed view of a valve sleeve 6,
  • FIG. 3 a detailed view of a connecting pipe 44
  • FIG. 4 a detailed view of serving as an inner pole core 2
  • FIG. 8 a detailed view of a valve shell 5 in the form of a magnet pot, wherein in the Figures 3 and 4 shown embodiments for better understanding the diere and are not included in the invention.
  • press fits between the two components to be fastened are appropriate. But press fits generally lead in the components to compressions or strains plastic or elastic type, depending on the tolerance position, material and component geometry. If the component partners can not stretch or compress due to their rigidity or if they are too soft in their material, such as soft magnetic chromium steels as particularly suitable stainless steels, it is very likely that cold welds ("eaters") will occur during the joining process. Also note the installation conditions of the component partners. If the press connection, for example, in the installed state subjected to an internal pressure, so this can lead to strains and widening. Again, there is a risk of loosening the press connection and in the worst case of loosening the connection. To prevent this, therefore, the largest possible pressure should be generated, which in turn increases the tendency of the components to cold welding. Of course, with costly, precise and costly machining processes, such as fine grinding or honing, the tolerances can be narrowed and press joints improved.
  • the aim is to produce as cost-effective components that are provided as turned parts, press connections between metallic component partners that hold securely and reliably over a long period of time while avoiding cold welding and tight.
  • the press connections should be made very simple and inexpensive, which is why a separate operation of coating or oiling or heating of the component partners is omitted for shrinking.
  • FIG. 2 an example of a thin-walled valve sleeve 6 is shown, which extends over a large part of the axial length of the fuel injection valve and in which the connecting pipe 44 ( FIG. 3 ) in a region a and the core 2 ( FIGS. 4 to 7 ) can be pressed in a region b and on which the valve jacket 5 (FIG. FIG. 8 ) can be pressed in a region c.
  • the connecting pipe 44 correspondingly has an outer pressing area a ', which corresponds to the area a in the installed state in the valve sleeve 6 to a press connection.
  • a and a ' are characterized areas that come in principle for a material contact in the press connection in question; however, it is by no means necessary to make the press connection over the entire length of a and a '.
  • the connecting pipe 44 should be installed in the valve sleeve 6 with the lowest possible insertion force. By forming a defined short pressing area a ', the pressing length of minimized in the first place.
  • the pressing area a 'of the connecting pipe 44 is raised in relation to the adjacent sections of the connecting pipe 44.
  • fillets 59 are provided, which have a relatively large radius.
  • the radii correspond, for example, to an angularity in the transitions of approximately 0.5 ° to 1.2 °.
  • the connecting pipe 44 e.g. as an additional measure furrow-like or grooved grooves 61 provided on the surface, are interrupted by the zones of a possible cold welding again and again. Adverse "feeding zones" of the press connection are largely avoided.
  • the grooves 61 e.g. run around, a high excess, because they are plastically deformed during pressing and leveling something.
  • the generated profile of grooves 61 must have such a strength that, with a slight excess, the expansion of the valve sleeve 6 is still effected.
  • the core 2 according to FIG. 4 correspondingly has an outer pressing region b ', which corresponds with the region b in the installed in the valve sleeve 6 to a press connection.
  • b and b ' are characterized areas that come in principle for a material contact in the press connection in question; however, it is by no means necessary to make the press connection over the entire length of b and b '.
  • the core 2 should cause a minimum elongation of the valve sleeve 6 during pressing; However, the maximum insertion force should be limited.
  • FIG. 5 shows a detail view of serving as an inner pole core 2 with a first embodiment of the present invention configured circumferential pressing lip 65.
  • the grooves 61 closes in the axial direction via an inlet rounding 59 or a relatively sharp-edged transition in the outer contour recessed, einichichige area 64, which in turn subsequently in a larger diameter area, which has the function of a pressing lip 65 passes.
  • FIG. 6 shows an enlarged view of the section VI in FIG. 5 in the section of the core 2 described above.
  • the transitions from the pressing region b 'to the recessed region 64 and from the recessed region 64 to the pressing lip 65 may be provided with inlet fillets 59 (as in FIG FIG. 4 be shown); but they can also be chamfer-like ( FIG. 6 ) or stepped.
  • the joining partners slide off each other. This sliding can lead to abrasion due to the relatively soft material structure of the component partners, which can disadvantageously lead to contamination of the fuel injection valve.
  • the additional protruding pressing lip 65 of the resulting during the actual pressing dirt and chambered in the cavity formed by the recessed portion 64 In this way, a rinse or other expensive cleaning can be omitted.
  • the chambered cavity in the recessed area 64 abrasion is safely stored and thus can not get into other areas of the fuel injection valve and lead to functional impairment.
  • FIG. 7 a detail view of serving as an inner pole core 2 with a second embodiment of a pressing lip 65 is shown.
  • This embodiment is intended to illustrate that an adaptation of the outer diameter of the pressing lip 65 in dependence on the contour of the joining partner, here the thin-walled valve sleeve 6 may be attached.
  • the press lip 65 in which in the FIGS. 5 and 6 illustrated embodiment has an outer diameter corresponding to that of the pressing portion b '
  • the pressing lip 65 of the embodiment is according to FIG. 7 radially over the pressing area b 'over.
  • the deepened Region 64 on the outer contour of the core 2 is provided, for example, with two sections which are of different depths.
  • the pressing lip 65 is designed radially so far that a secure chambering of the possibly resulting during pressing abrasion is ensured.
  • the pressing lip 65 protrudes in accordance with the diameter enlargement provided on the valve sleeve 6 by a bulging in relation to the pressing region b.
  • the dotted lines in FIG. 7 are intended to indicate schematically at which points the core 2 in the pressed-in state rests in the valve sleeve 6, whereby a cavity results at the recessed area 64 between the core 2 and the valve sleeve 6.
  • the components core 2 and valve sleeve 6 are in the FIGS. 5 to 7 selected only as an example; Press lips 65 may be provided on all fixed press connections of at least two metallic components 2, 5, 6, 44 of the fuel injection valve.
  • the valve jacket 5 according to FIG. 8 correspondingly has an inner pressing region c ', which corresponds in the state applied to the valve sleeve 6 with the region c to a press connection.
  • c and c ' are characterized areas that come in principle for a material contact in the press connection in question; however, it is by no means necessary to make the press connection over the entire length of c and c '.
  • furrow-like or groove-like grooves 61 are provided on the surface, are interrupted by the zones of a possible cold welding again and again. Adverse "feeding zones" of the press connection are largely avoided.
  • the grooves 61 which circulate for example, reduce a large excess, because they are plastically deformed during pressing and level slightly.
  • the generated profile of grooves 61 must have such a strength that, with a slight oversize, a sufficient widening of the valve sleeve 6 for the tight fit of the core 2 is effected.
  • the pressing length can be minimized from the outset.
  • the pressing region c 'of the valve jacket 5 can also be designed to be raised in relation to the adjacent sections of the valve jacket 5, whereby the maximum pressing region c' is defined even more precisely.
  • the transition of the pressing region c is provided with an inlet rounding 59 on an axial side, which has a relatively large radius.
  • the radius corresponds for example to an angularity in the transition of about 0.5 ° to 1.2 °.
  • pressing area a, b, c, a ', b', c ' is to a "dry coating" made, in which the pressing area a, b, c, a', b ', c' in a washing process with a industrial cleaner and a washing additive, eg SurTec® 104 is treated.
  • the washing of the components 2, 5, 6, 44 selected therefor takes place e.g. by dipping, spraying or sprinkling.
  • a 5-10% SurTec® 104 solution is used in the treatment of the pressing area a, b, c, a ', b', c '.
  • Hitec solution for example Hitec® E536 from the company Ethyl Corp.
  • the grooves 61 in the respective pressing region a, b, c, a ', b', c ' serve as a lubricant reservoir.
  • the modular universal cleaner made of surfactant components SurTec® 089 can also be used.
  • This cleaner with surfactants and corrosion protection components is particularly suitable for immersion cleaning.
  • the metallic components 2, 5, 6, 44 are already cleaned before installation and protected by a passivation from corrosion.
  • the drying of the components 2, 5, 6, 44 after the washing process takes place e.g. using vacuum dryers.

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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 (7)

  1. Soupape d'injection de carburant pour des installations d'injection de carburant de moteurs à combustion interne, comprenant un axe longitudinal de soupape (10), avec un actionneur excitable (1, 2, 17) pour l'actionnement d'un corps de fermeture de soupape (19), qui coopère avec une surface de siège de soupape (16) prévue sur un corps de siège de soupape (15), et comprenant au moins une ouverture de pulvérisation (27), et des composants métalliques qui sont assemblés fixement les uns aux autres par pressage, caractérisée en ce que l'assemblage fermement par pressage d'au moins deux composants métalliques (2, 5, 6, 44) de la soupape d'injection de carburant se caractérise par le fait qu'au moins le premier partenaire des composants (2, 5, 44) présente dans sa région de pressage (b', c') une structure avec des stries (61) et la région de pressage respective (b, c) du deuxième partenaire des composants (6) possède dans au moins une transition à une portion de composant adjacente un arrondi d'entrée (59), la région de pressage (b', c') du premier partenaire des composants (2, 5, 44) étant réalisée de manière rehaussée par rapport aux portions de composant adjacentes, les arrondis d'entrée (59) possédant un rayon qui correspond à une angularité dans les transitions de 0,5° à 1,2°,
    et, partant de la région de pressage (b', c') du premier partenaire des composants (2, 5, 44), d'abord une région en retrait (64), puis une lèvre de pressage (65) saillant radialement davantage vers l'extérieur se raccordent au contour extérieur de ce premier partenaire des composants (2, 5, 44), la lèvre de pressage (65) correspondant au deuxième partenaire des composants (6) opposé de telle sorte qu'entre la région de pressage (b, c) du deuxième partenaire des composants (6) et la lèvre de pressage (65), la région renfoncée (64) forme une cavité dans laquelle est retenue la saleté produite pendant le pressage.
  2. Soupape d'injection de carburant selon la revendication 1,
    caractérisée en ce que la région renfoncée (64) est façonnée en forme d'encoche.
  3. Soupape d'injection de carburant selon la revendication 1 ou 2,
    caractérisée en ce que les transitions de la région de pressage (b', c') du premier partenaire des composants (2, 5, 44) à la région renfoncée (64) et de la région renfoncée (64) à la lèvre de pressage (65) s'étendent sous forme arrondie, obliquement comme un biseau ou sous forme étagée.
  4. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisée en ce que le diamètre extérieur de la lèvre de pressage (65) correspond à celui de la région de pressage (b', c') du premier partenaire des composants (2, 5, 44) ou le diamètre extérieur de la lèvre de pressage (65) et de la région de pressage (b', c') sont différents.
  5. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisée en ce que les stries (61) sont circonférentielles dans la région de pressage (b', c') du premier partenaire des composants (2, 5, 44).
  6. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une douille de soupape (6) à paroi mince est prévue en tant que deuxième partenaire des composants, dans laquelle douille de soupape est pressé en tant que premier partenaire des composants un tube de raccordement (44) et/ou un noyau (2), et/ou sur laquelle est pressée une enveloppe de soupape (5).
  7. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisée en ce que les partenaires des composants métalliques (2, 5, 6, 44) assemblés les uns aux autres par l'assemblage fermement par pressage se composent d'un acier spécial, par exemple d'un acier chromé faiblement magnétique.
EP08708598A 2007-02-23 2008-02-01 Injecteur de carburant Not-in-force EP2126332B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007008863A DE102007008863A1 (de) 2005-08-26 2007-02-23 Brennstoffeinspritzventil
PCT/EP2008/051293 WO2008101791A1 (fr) 2007-02-23 2008-02-01 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP2126332A1 EP2126332A1 (fr) 2009-12-02
EP2126332B1 true EP2126332B1 (fr) 2012-09-26

Family

ID=39291786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08708598A Not-in-force EP2126332B1 (fr) 2007-02-23 2008-02-01 Injecteur de carburant

Country Status (6)

Country Link
US (1) US9200604B2 (fr)
EP (1) EP2126332B1 (fr)
JP (1) JP5312350B2 (fr)
CN (1) CN101617117B (fr)
DE (1) DE102007008863A1 (fr)
WO (1) WO2008101791A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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ATE529626T1 (de) * 2009-03-12 2011-11-15 Continental Automotive Gmbh Verfahren zur zusammensetzung der ventilanordnung eines einspritzventils und ventilanordnung eines einspritzventils
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JP2010519451A (ja) 2010-06-03
CN101617117A (zh) 2009-12-30
CN101617117B (zh) 2013-06-19
JP5312350B2 (ja) 2013-10-09
DE102007008863A1 (de) 2008-08-28
US20110259299A1 (en) 2011-10-27
WO2008101791A1 (fr) 2008-08-28
US9200604B2 (en) 2015-12-01
EP2126332A1 (fr) 2009-12-02

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