EP1859160B1 - Dispositif d'injection de carburant - Google Patents

Dispositif d'injection de carburant Download PDF

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Publication number
EP1859160B1
EP1859160B1 EP06708603A EP06708603A EP1859160B1 EP 1859160 B1 EP1859160 B1 EP 1859160B1 EP 06708603 A EP06708603 A EP 06708603A EP 06708603 A EP06708603 A EP 06708603A EP 1859160 B1 EP1859160 B1 EP 1859160B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
connecting body
injection device
fuel
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
EP06708603A
Other languages
German (de)
English (en)
Other versions
EP1859160A1 (fr
Inventor
Thomas Fuerst
Thilo Bolz
Martin Riemer
Ingo Rettig
Goekhan Guengoer
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
Priority claimed from DE200510009740 external-priority patent/DE102005009740A1/de
Priority claimed from DE200510020380 external-priority patent/DE102005020380A1/de
Priority to EP10153017A priority Critical patent/EP2189650B1/fr
Priority to EP10153043.4A priority patent/EP2187036B1/fr
Priority to EP10152996A priority patent/EP2187035B1/fr
Priority to EP10153095A priority patent/EP2187040B1/fr
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP10153072.3A priority patent/EP2187039B1/fr
Priority to EP10153103.6A priority patent/EP2187041B1/fr
Publication of EP1859160A1 publication Critical patent/EP1859160A1/fr
Publication of EP1859160B1 publication Critical patent/EP1859160B1/fr
Application granted granted Critical
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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention relates to a fuel injection device according to the preamble of claim 1.
  • the fastening device comprises a sleeve which is clamped between a shoulder of the fuel rail and a shoulder of the fuel injection valve and is formed of an elastic material. Due to its tubular structure, the sleeve can transfer the hold-down forces to the fuel injector only to a limited extent effectively.
  • the claimed by the shoulders of the fuel injection valve and fuel distributor surfaces of serving as holddown sleeve represent the manufacturing in the production of the blank of the sleeve resulting from manufacturing cutting edges.
  • the fuel injector is inserted into a receiving bore of the cylinder head and is supported against a support ring, which at a radial extending shoulder of the receiving bore rests.
  • the support ring is rounded towards the fuel injection valve and serves as a bearing point of the fuel injection valve in the receiving bore of the cylinder head.
  • the support ring may be made of an elastic material and provides for centering and a slight compensation movement of the fuel injection valve in the receiving bore. The tilting movement allows radial tolerance compensation between fuel injector and fuel rail. About an additional clamping of the fuel rail on the cylinder head by means of screws, the sleeve is clamped. This creates a spring force which acts on the fuel injection valve and holds this down against the combustion pressure.
  • This design has the consequence that both by the hold-down force and by the fuel in the fuel distributor line inside high pressure of the fuel injection valve is pressed over the support ring in the cylinder head so that an undesirably high structure-borne sound transmission from the fuel injection valve into the cylinder head takes place in the negative Way clearly audible.
  • a fuel injector for fuel injection systems of internal combustion engines which comprises a plurality of fuel injection valves, which are respectively introduced into receiving bores for the fuel injection valve in a cylinder head.
  • the fuel injector includes a fuel rail with the number of fuel injection valves corresponding connecting piece, in which the fuel injection valves are partially overlapped.
  • a cup-shaped screw element is provided, which has an internal thread on its jacket portion, which allows a screw connection together with an external thread on the connecting piece. The screw is arranged such that the fuel injection valve is held in it so that the fuel injection valve and the connecting body are introduced system-free to all not axially parallel to the fuel injection valve extending surfaces or walls of the receiving bore of the cylinder head.
  • a fuel injection system for internal combustion engines which also includes a plurality of injection valves.
  • Each of the injectors is sealingly connected at its one end via a connecting piece with a plug-in nipple of a common dimensionally stable fuel distribution line.
  • each injection valve has a mouthpiece, which is sealingly insertable into a corresponding opening of a suction pipe or a cylinder head.
  • Each injection valve is connected by a respective resilient, correspondingly shaped headband, which at least partially surrounds the injection valve and the fuel distributor line or the plug-in nipple, with the fuel distribution line.
  • the fuel injection device with the characterizing features of claim 1 has the advantage that the structure-borne sound transmission from the fuel injection valve is significantly reduced in the cylinder head. This is achieved in that the fuel injection valve is connected directly to the fuel distributor line via a connecting body, but is largely decoupled from the receiving bore of the cylinder head.
  • the fuel injection valve is arranged in the receiving bore of the cylinder head such that it is introduced system-free to all not axially parallel to the fuel injection valve extending surfaces or walls of the receiving bore.
  • the connecting body according to the invention advantageously allows a tilting movement of the fuel injection valve for radial tolerance compensation between the cylinder head and the fuel distributor line.
  • connecting body tubular, sleeve-shaped or cup-shaped It is particularly advantageous to make the connecting body tubular, sleeve-shaped or cup-shaped and to connect it firmly to the connecting piece of the fuel distributor line by means of a non-material connection, in particular a press, screw, clip, latching or snap connection. This connection is still secured with a lock nut or a locking ring.
  • a non-material connection in particular a press, screw, clip, latching or snap connection.
  • This connection is still secured with a lock nut or a locking ring.
  • Such compounds make it possible, in particular, to allow a tilting movement of the fuel injection valve for radial tolerance compensation between cylinder head and fuel distributor line in an advantageous manner.
  • connection piece In addition to the non-material connections mentioned, it is also conceivable to connect the connecting body or intermediate components cooperating with the connecting body to the connecting piece in a material-locking manner, e.g. using laser welding, resistance welding or soldering. In addition, combinations of form, force and material connection for the desired connections can be used on the connection piece.
  • damping disks in the connection region of the fuel distributor line and cylinder head. These damping disks can be used simply or twice in the region of each screw connection of the fuel distributor line to the cylinder head, so that the high-pressure injection system is even more effectively decoupled from the cylinder head and sound-insulated.
  • the hold-down as punching-bending part and shape and obstruct the fuel injection device that the stress of bending stress surfaces of the inclined sections and abutment portions of the blank perpendicular to the cutting edges, which are in the extraction of the blank for the Hold-downs from the corresponding sheet arise.
  • the permanent load capacity of the stressed portions of the hold-down bracket of the hold-down can be increased and achieve an optimum hold-down force on the fuel injection valve for secure fixation in the receiving bore.
  • FIG. 1 is shown as a first embodiment, a valve in the form of an injection valve 1 for fuel injection systems of mixture-compression spark-ignited internal combustion engines in a side view.
  • the fuel injection valve 1 is part of a fuel injection device.
  • a downstream end of the fuel injection valve 1 which is designed in the form of a direct-injection injector for injecting fuel directly into a combustion chamber of the internal combustion engine, installed in a receiving bore 9 of a cylinder head 17 indicated only schematically.
  • a sealing ring 2 in particular of Teflon®, ensures optimum sealing of the fuel injection valve 1 with respect to the wall of the receiving bore 9 of the cylinder head 17.
  • the fuel injection valve 1 has at its inlet-side end 3 a plug connection to a fuel distributor line 4, which is sealed by a sealing ring 5 between a connection piece 6 of the fuel distributor line 4, which is shown in section, and an inlet connection 7 of the fuel injection valve 1.
  • the fuel injection valve 1 has an electrical connection plug 8 for the electrical contacting for actuating the fuel injection valve 1.
  • a holding-down device 10 is provided between the fuel injection valve 1 and the connecting piece 6.
  • the hold-down 10 is designed as a bow-shaped component, e.g. as punching-bending part.
  • the hold-down 10 has a part-ring-shaped base element 11, wherein this base element 11, which does not rotate through 360 °, but e.g. only an extension of about 250 ° to 320 °, is supported on a shoulder 12 of the fuel injection valve 1.
  • axially resilient hold-down bracket 13 of the hold-down 10 abuts a downstream end surface 14 of the connecting piece 6 to the fuel rail 4 in the installed state.
  • the connecting piece 6 of the fuel distributor line 4 has at its downstream end a partially annular circumferential, protruding collar 15, on which the end face 14 is formed to bear the blank holder 10 with its hold-down bracket 13.
  • the hold-down device 10 is interrupted, the hold-down device 10 itself forms a closed bracket element, since the hold-down bar 13 is connected endlessly to the base element 11. In this way, the hold-down 10 can surround the fuel injector 1 and still allows the passage of the electrical connector plug 8.
  • the hold-down bar 13 protrudes with its resilient brackets from the connector 8 away.
  • the hold-down 10 is used e.g. separated by punching, eroding or laser cutting from sheets of spring steel or stainless steel (with a thickness of about 1.5 mm) and then brought by bending in the desired shape.
  • the hold-down device 10 has the advantage that the surfaces of the hold-down 10, in particular inclined sections and abutment sections, which are subject to bending stress, run perpendicular to cut edges which are defined in the removal of the blank for the hold-down 10 from the corresponding metal sheet.
  • fuel injection valves are installed in receiving bores of a cylinder head such that they rest directly or indirectly via support rings on radially extending shoulders of the receiving bores.
  • Such a structure has the consequence that both by the hold-down force of resilient downers and fittings or tension of the fuel rail on the cylinder head as well as by the pressure in the fuel supply line inside high pressure of the fuel Fuel injection valve is pressed into the cylinder head such that an undesirably high structure-borne sound transmission from the fuel injection valve into the cylinder head takes place, which can be clearly audible in a negative way.
  • the structure-borne sound transmission from the fuel injection valve 1 into the cylinder head 17 is significantly reduced. This is achieved in that the fuel injection valve 1 is connected directly to the fuel distributor line 4 via a connecting body 18, but is largely decoupled from the receiving bore 9 of the cylinder head 17.
  • the fuel injection valve 1 is arranged in the receiving bore 9 of the cylinder head 17 such that it is introduced system-free to all not axially parallel to the fuel injector 1 extending surfaces or walls of the receiving bore 9.
  • the fuel injection valve 1 is suspended in the connecting body 18.
  • the fuel injector 1 is engaged by a retaining collar 21 or more retaining collar segments of the connecting body 18, so that the fuel injection valve 1 with respect to a radially extending shoulder 22 of the receiving bore 9 spaced freely suspended.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, are directed towards the housing shoulder 20, e.g. executed rounded, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • the connecting body 18 has another, e.g. slit-like opening 23 into which engages the collar 15 of the connecting piece 6 as well as in the recess 19 for secure attachment of the fuel injection valve 1 and the connecting body 18 to the fuel rail 4.
  • the fuel distribution line 4 is fastened by means of connecting means 25, in the illustrated embodiment by means of screws, to the cylinder head 17. Is particularly advantageous it, in addition to the decoupling of the fuel injection valve 1 from the cylinder head 17 to provide damping plates 26 in this connection region of the fuel rail 4 and the cylinder head 17.
  • damping discs 26 may be disposed in the region below the screw head with a support directly to the fuel rail 4 and / or with a support directly to the cylinder head 17, so that the high-pressure injection system consisting of fuel manifold 4 and a plurality of fuel injectors 1 to the cylinder head 17 out even more decoupled and is better soundproofed.
  • the force exerted on the connecting means 25 can be reduced because the force acting on the fuel injector 1 of the fuel under high pressure by the connecting body 18 according to the invention directly received positively at the junction of fuel injector 1 and fuel manifold 4 and not via the connecting means 25 is headed.
  • FIG. 2 a second embodiment of a fuel injection device is shown, wherein in this figure and in all other figures, the representation on the connecting piece 6 of the fuel distributor line 4, the fuel injection valve 1 and the connecting body 18 is limited.
  • a sleeve is provided as a connecting body 18, which defines the distance between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • the connecting body 18, for example, only rotates through 270 ° and has a recess 19 for the connector 8 of the fuel injection valve 1.
  • the sleeve-shaped connecting body 18 is fixedly connected both to the end surface 14 and to the shoulder 12 with the fuel distributor line 4 and the fuel injection valve 1.
  • the fixed connection is produced, for example, by welding, in particular laser welding, wherein welds or welds 27 can be provided.
  • FIG. 3 a third embodiment of a fuel injection device is shown.
  • an annular connecting body 18 is provided, which engages under the fuel injection valve 1 on a flange 28.
  • this flange 28 In direct operative connection with this flange 28 are, for example, two axial screws 29, which are supported on the one hand in a receiving bore 30 of the fuel distribution line 4, which is located for example on a lateral shoulder of the fuel distribution line 4, and on the other hand engage in the connecting body 18. In this way, the fuel injection valve 1 can be pulled into the connecting piece 6 into it.
  • Connecting body 18 is performed, for example, annular circumferential, with the fuel injector 1 inwardly projecting in the region of the two axial screws 29, for example, two gripping portions 31 are provided which engage under the flange 28 directly.
  • the hold-down 10 is shown in this figure and in all other figures only symbolically as a spring, the hold-down 10 in an ideal manner as ironing element according to FIG. 1 and the corresponding description FIG. 1 is trained.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 between the end face 14 of the connecting piece 6 and the flange 28 is clamped to the fuel injection valve 1.
  • FIG. 4 a fourth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injector 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, eg a clip connection with the connecting piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • the connection body 18 has a first latching means 32, for example in the form of a bulge, while a second latching means 33, for example in the form of a bulge, is provided on the periphery of the connection piece 6, which together form a latching or clip-on projection.
  • the bulge 33 on the connecting piece 6 is designed, for example, with a radius R whose center lies on the valve longitudinal axis in the center of the sealing ring 5.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • FIG. 5 a fifth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in minor modification of the embodiment according to FIG. 4 also by the fact that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, here a locking connection with screw connection to the connecting piece 6 is connected.
  • the connecting body 18 is designed in a tubular shape with a gradation and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside this recess 19, the connecting body 18 may be performed by 360 ° encircling.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • the connecting body 18 has an annular collar 35, which has a conical supporting surface 36.
  • the annular collar 35 of the connecting body 18 is supported on a fastening ring 37 which, for example, has a curved surface facing the annular collar 35 and rests on a downstream collar 15 of the connecting piece 6.
  • a fastening ring 37 which, for example, has a curved surface facing the annular collar 35 and rests on a downstream collar 15 of the connecting piece 6.
  • FIG. 6 a sixth embodiment of a fuel injection device is shown.
  • a pot-shaped sleeve is provided as a connecting body 18, which is 6 securely and firmly arranged at the downstream end of the connecting piece.
  • the connecting body 18 has a skirt portion 41 and a bottom portion 42, wherein the skirt portion 41 is fixed, for example by means of positive and / or non-positive, for example by pressing 43 on the circumference of the connecting piece 6.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 via the axial position of the connecting body 18 is adjustable with non-positive connection.
  • the bottom portion 42 is a central opening 44th provided, which is penetrated by a tapered portion 45 of the fuel injection valve 1.
  • a slot-like widening or enlargement is formed as a radius-larger hole.
  • the hold-down 10 is clamped between the bottom portion 42 of the connecting body 18 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 7 a seventh embodiment of a fuel injection device is shown.
  • the fuel injection valve 1 has a radially outwardly projecting flange 46.
  • the connecting body 18 is designed in the form of a lock nut 38.
  • the connecting body 18 has a section containing an internal thread, to which an annular collar 47 adjoins, which has a conical supporting surface 48.
  • This support surface 48 of the annular collar 47 of the connecting body 18, 38 is supported on the flange 46, for example, has a the annular collar 47 facing curved surface.
  • the locking nut 38 corresponds to an external thread 39 on the circumference of the connection piece 6.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 can be set with the securing nut 38 acting on the flange 46 of the fuel injection valve 1.
  • the hold-down 10 is clamped between the annular collar 47 of the lock nut 38 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 8 an eighth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized by its very simple structure.
  • the fuel injection valve 1 is attached directly to its inlet nozzle 7 in the connecting piece 6 of the fuel distributor line 4.
  • the fixed connection 49 is achieved for example by means of adhesion, positive connection and / or material connection. Weldable or soldered connections and the pressing in of the inlet connection 7 in the connecting piece 6 are conceivable, for example, to form a metallic interference fit.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 is adjustable.
  • the tolerance compensation indicated by the double arrow 34 is possible here exclusively via a suitably foreseeable flexibility of the fuel injection valve 1.
  • FIG. 9 A ninth embodiment of a fuel injection device is shown.
  • This fuel injection device stands out characterized in that a connecting body 18 is formed, on the one hand engages with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, eg a latching connection with the connecting piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • the connecting body 18 At its end facing the connecting piece 6, the connecting body 18 has a latching means 52, for example in the form of one or more latching lugs, which engage over a collar 15 at the downstream end of the connecting piece 6 and thus together correspond to a latching connection.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIGS. 10 and 11 A tenth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, such as a snap connection with the connecting piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside this recess 19, the connecting body 18 by 360 ° be executed circumferentially.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, are curved, for example, toward the housing shoulder 20, while the housing shoulder 20 on the fuel injection valve 1, for example, runs conically.
  • the connecting body 18, seen over the circumference has two opposing slots 53, which, for example, have an extent of approximately 90 °.
  • the slots 53 are penetrated by a bow-shaped, U-shaped snap ring 54.
  • the snap ring 54 also engages in the peripheral region of the slots 53 in the connecting body 18 in two slot-shaped grooves 55 on the circumference of the connecting piece 6 for secure attachment of the connecting body 18 to the fuel rail 4 a.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 12 an eleventh embodiment of a fuel injection device is shown.
  • the fuel injection valve 1 has a wire ring 56 inserted in a groove.
  • the connection body 18 is designed in the form of a lock nut 38.
  • the connecting body 18 has a section containing an internal thread, to which an annular collar 47 adjoins, which has a curved support surface 57 in the form of a ball socket. With this support surface 57, the annular collar 47 of the connecting body 18, 38 is supported on the wire ring 56, which is received with its curvature in the annular collar 47.
  • the support surface 57 on the annular collar 47 of the lock nut 38 is designed, for example, with a radius R whose center lies on the valve longitudinal axis in the center of the sealing ring 5.
  • the locking nut 38 corresponds to an external thread 39 on the circumference of the connection piece 6.
  • the penetration depth of the fuel injection valve 1 in the connection piece 6 can be adjusted with the locking nut 38 acting on the wire ring 56 of the fuel injection valve 1.
  • the hold-down 10 is clamped between the annular collar 47 of the lock nut 38 and the shoulder 12 on the fuel injection valve 1.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • FIG. 13 a twelfth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand is connected via a non-positive and / or material connection with the connecting piece 6.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • the connecting body 18 is fastened directly on the outer periphery of the connecting piece 6 of the fuel distributor line 4.
  • the fixed connection 49 is achieved for example by means of adhesion, positive connection and / or material connection. Weldable or soldered joints and the pressing on of the connecting body 18 on the connecting piece 6 are conceivable, for example, to form a metallic interference fit.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 is adjustable.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 14 A thirteenth embodiment of a fuel injection device is shown.
  • This fuel injection device stands out characterized in that a connecting body 18 is formed, on the one hand engages with a retaining collar 21, the fuel injector 1 in the region of a housing shoulder 20 and on the other hand is connected via a material connection with the connecting piece 6.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface.
  • the connecting body 18 is fastened directly to the downstream end face 14 of a radially outwardly projecting collar 15 of the connection piece 6 of the fuel distributor line 4.
  • the fixed connection 49 is achieved for example by means of resistance welding.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 15 a fourteenth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand is connected via a screw connection with the connecting piece 6.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18, so that the fuel injection valve 1 with respect to a radially extending shoulder 22 of the Receiving bore 9 spaced freely suspended.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface.
  • the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • the connecting body 18 is engaged by a locking nut 38.
  • the securing nut 38 has a section containing an internal thread, to which an annular collar 47 adjoins.
  • the locking nut 38 engages with an external thread 39 on the circumference of the connecting piece 6. With the engaging on the collar 58 of the connecting body 18 locking nut 38, the penetration depth of the fuel injection valve 1 in the connecting piece 6 are set.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 16 a fifteenth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in that the connecting body 18 is only a slotted snap ring 59.
  • the snap ring 59 engages in a tapered portion of the inlet nozzle 7 of the fuel injection valve 1 a.
  • a groove 60 is provided, in which the snap ring 59 is locked securely and firmly.
  • the snap ring 59 has a conical or curved spherical bearing surface 62.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 17 a sixteenth embodiment of a erfindunmultien fuel injection device is shown.
  • a connecting body 18 a cup-shaped sleeve which is arranged securely and firmly at the downstream end of the connecting piece 6.
  • the connecting body 18 is designed in two parts, ie it consists of two semi-annular elements 63.
  • Each of the ring members 63 has a skirt portion 41 and a bottom portion 42, wherein the skirt portion 41 opposite the bottom portion 42 each in a hook-shaped latching portion 64 passes.
  • the locking portions 64 of the connecting body 18 engage securely in two grooves 65 on the circumference of the connecting piece 6.
  • a central opening 44 is provided, which is penetrated by a tapered portion 45 of the fuel injection valve 1, wherein the tapered portion 45 on the inlet nozzle 7 has a conical flank 66 as abutment surface.
  • the central opening 44 in the bottom section 42 has a curved spherical boundary edge, which corresponds to the contact surface 66 of the tapered region 45 and can slide slightly therealong.
  • a closed clamping ring 67 is pushed over the two ring elements 63.
  • the hold-down 10 is clamped between the bottom portion 42 of the connecting body 18 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 18 a seventeenth embodiment of a fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, here a snap or latching connection with the connecting piece 6 is.
  • the connecting body 18 is tubular with counter to the flow direction widening opening and has to reach through the connector 8 of the fuel injector 1 has a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° encircling.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • the connecting body 18 has an annular overlapping section 69 on, which has two conical boundary surfaces 70a, 70b.
  • a groove 55 is provided on the circumference of the connecting piece 6, in which an open spring ring 71 is introduced.
  • the first limiting surface 70a first pushes the spring ring 71 into the groove 55 until the overlapping section 69 has slid over the spring ring 71.
  • the second boundary surface 70b of the overreaching section 69 of the connecting body 18 is supported on the spring ring 71, which due to its spring tension slightly slips radially outwards out of the groove 55 and clamps the connecting body 18 to the connecting piece 6.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

Claims (14)

  1. Dispositif d'injection de carburant pour des installations d'injection de carburant de moteurs à combustion interne, comprenant au moins une soupape d'injection de carburant (1), un alésage de réception (9) pour la soupape d'injection de carburant (1) dans une culasse (17), une conduite de distribution de carburant (4) avec une tubulure de raccordement (6) dans laquelle est introduite avec chevauchement partiel la soupape d'injection de carburant (1), un corps de connexion (18) étant disposé de telle sorte que la soupape d'injection de carburant (1) soit maintenue à l'intérieur de celui-ci de telle sorte que la soupape d'injection de carburant (1) et le corps de connexion (18) soient introduits sans appui contre toutes les surfaces ou parois de l'alésage de réception (9) de la culasse (17) qui ne s'étendent pas parallèlement à l'axe de la soupape d'injection de carburant (1),
    caractérisé en ce que
    le corps de connexion (18) se compose de deux éléments annulaires (63) qui viennent en prise autour de la soupape d'injection de carburant (1) et de la tubulure de raccordement (6), les éléments annulaires (63) étant fixés à une bague de serrage (67) les entourant.
  2. Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que le corps de connexion (18) est monté directement sur la tubulure de raccordement (6) de la conduite de distribution de carburant (4).
  3. Dispositif d'injection de carburant selon la revendication 1 ou 2, caractérisé en ce que le corps de connexion (18) est réalisé sous forme tubulaire.
  4. Dispositif d'injection de carburant selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le corps de connexion (18) présente plusieurs segments de bord de retenue avec lesquels la soupape d'injection de carburant (1) est saisie par le dessous.
  5. Dispositif d'injection de carburant selon la revendication 4, caractérisé en ce que les segments de bord de retenue du corps de connexion (18) viennent en prise au niveau d'un épaulement de boîtier (20) de la soupape d'injection de carburant (1).
  6. Dispositif d'injection de carburant selon la revendication 5, caractérisé en ce que les segments de bord de retenue du corps de connexion (18) sont réalisés sous forme arrondie vers l'épaulement de boîtier (20), tandis que l'épaulement de boîtier (20) au niveau de la soupape d'injection de carburant (1) s'étend coniquement.
  7. Dispositif d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisé en ce que la conduite de distribution de carburant (4) est fixée à la culasse (17) au moyen de moyens de connexion (25).
  8. Dispositif d'injection de carburant selon la revendication 7, caractérisé en ce que l'on prévoit dans la région des moyens de connexion (25) à chaque fois au moins un disque d'amortissement (26).
  9. Dispositif d'injection de carburant selon la revendication 8, caractérisé en ce que les disques d'amortissement (26) sont disposés avec un appui directement sur la conduite de distribution de carburant (4) et/ou avec un appui directement sur la culasse (17).
  10. Dispositif d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un serre-flan (10) est serré entre un épaulement (12) de la soupape d'injection de carburant (1) et une surface d'extrémité (14) de la tubulure de raccordement (6).
  11. Dispositif d'injection de carburant selon la revendication 10, caractérisé en ce que le serre-flan (10) présente un élément de base en forme de bague partielle (11), depuis lequel s'étend sous forme recourbée un étrier de serre-flan (13) flexible axialement.
  12. Dispositif d'injection de carburant selon la revendication 11, caractérisé en ce que l'étrier de serre-flan (13) s'applique contre la surface d'extrémité (14) de la tubulure de raccordement (6).
  13. Dispositif d'injection de carburant selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le serre-flan (10) est réalisé sous forme de pièce estampée pliée.
  14. Dispositif d'injection de carburant selon l'une quelconque des revendications 10 à 13, caractérisé en ce que le serre-flan (10), vu dans la direction périphérique, présente une région ouverte qui est traversée comme un évidement (19) du corps de connexion (18) par un connecteur de raccordement (8) de la soupape d'injection de carburant (1).
EP06708603A 2005-03-03 2006-03-02 Dispositif d'injection de carburant Not-in-force EP1859160B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP10153103.6A EP2187041B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153043.4A EP2187036B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10152996A EP2187035B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153095A EP2187040B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153017A EP2189650B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153072.3A EP2187039B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200510009740 DE102005009740A1 (de) 2005-03-03 2005-03-03 Brennstoffeinspritzvorrichtung
DE200510020380 DE102005020380A1 (de) 2005-05-02 2005-05-02 Brennstoffeinspritzvorrichtung
PCT/EP2006/060398 WO2006092427A1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP10153103.6A Division EP2187041B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153072.3A Division EP2187039B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153017A Division EP2189650B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1859160A1 EP1859160A1 (fr) 2007-11-28
EP1859160B1 true EP1859160B1 (fr) 2010-02-10

Family

ID=36143339

Family Applications (7)

Application Number Title Priority Date Filing Date
EP10152996A Not-in-force EP2187035B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP06708603A Not-in-force EP1859160B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153103.6A Not-in-force EP2187041B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153043.4A Not-in-force EP2187036B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153072.3A Not-in-force EP2187039B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153017A Not-in-force EP2189650B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153095A Not-in-force EP2187040B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10152996A Not-in-force EP2187035B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant

Family Applications After (5)

Application Number Title Priority Date Filing Date
EP10153103.6A Not-in-force EP2187041B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153043.4A Not-in-force EP2187036B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153072.3A Not-in-force EP2187039B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153017A Not-in-force EP2189650B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant
EP10153095A Not-in-force EP2187040B1 (fr) 2005-03-03 2006-03-02 Dispositif d'injection de carburant

Country Status (6)

Country Link
US (1) US7765984B2 (fr)
EP (7) EP2187035B1 (fr)
JP (4) JP4809375B2 (fr)
AT (1) ATE457422T1 (fr)
DE (1) DE502006006106D1 (fr)
WO (1) WO2006092427A1 (fr)

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EP2189650A2 (fr) 2010-05-26
US20080302336A1 (en) 2008-12-11
EP2189650A3 (fr) 2010-08-11
JP2011220342A (ja) 2011-11-04
DE502006006106D1 (de) 2010-03-25
EP2187040A2 (fr) 2010-05-19
WO2006092427A1 (fr) 2006-09-08
JP6038257B2 (ja) 2016-12-07
EP2187041A2 (fr) 2010-05-19
EP2187041A3 (fr) 2010-08-25
ATE457422T1 (de) 2010-02-15
EP2187039B1 (fr) 2014-05-07
JP6120790B2 (ja) 2017-04-26
EP2187040A3 (fr) 2010-08-11
EP1859160A1 (fr) 2007-11-28
EP2187036B1 (fr) 2013-07-10
JP2008531918A (ja) 2008-08-14
US7765984B2 (en) 2010-08-03
EP2187035A3 (fr) 2010-08-18
JP2014122637A (ja) 2014-07-03
JP2016028201A (ja) 2016-02-25
EP2187039A2 (fr) 2010-05-19
EP2187040B1 (fr) 2013-01-09
JP4809375B2 (ja) 2011-11-09
EP2187035A2 (fr) 2010-05-19
EP2187041B1 (fr) 2015-01-28
EP2187039A3 (fr) 2010-08-11
EP2187036A2 (fr) 2010-05-19
EP2187035B1 (fr) 2013-02-27
EP2187036A3 (fr) 2010-08-11
EP2189650B1 (fr) 2012-10-17

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