EP0894193A1 - Dispositif de montage d'une soupape d'injection de carburant - Google Patents

Dispositif de montage d'une soupape d'injection de carburant

Info

Publication number
EP0894193A1
EP0894193A1 EP97949950A EP97949950A EP0894193A1 EP 0894193 A1 EP0894193 A1 EP 0894193A1 EP 97949950 A EP97949950 A EP 97949950A EP 97949950 A EP97949950 A EP 97949950A EP 0894193 A1 EP0894193 A1 EP 0894193A1
Authority
EP
European Patent Office
Prior art keywords
mounting device
injection valve
fuel injection
fuel injector
jacket body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97949950A
Other languages
German (de)
English (en)
Other versions
EP0894193B1 (fr
Inventor
Rainer Norgauer
Christian Preussner
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 EP0894193A1 publication Critical patent/EP0894193A1/fr
Application granted granted Critical
Publication of EP0894193B1 publication Critical patent/EP0894193B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53839—Puller or pusher means, contained force multiplying operator having percussion or explosive operator
    • Y10T29/53843—Tube, sleeve, or ferrule inserting or removing

Definitions

  • the invention relates to a mounting device for mounting a fuel injection valve, in particular a high-pressure direct injection valve, in a receiving bore of a cylinder head of an internal combustion engine.
  • the high-pressure direct injection valve injects fuel directly into the combustion chamber of the internal combustion engine.
  • the invention is based on a Montagevomchtung according to the preamble of the main claim. It is already known from DE 43 15 233 AI to provide a mounting device designed as a sealing sleeve for mounting a fuel injection valve on a direct-injection internal combustion engine, which surrounds the fuel injection valve via an axial section and which is pressed tightly onto the cylinder head by means of a clamping claw.
  • the mounting device designed as a sealing sleeve seals an oil chamber, which, among other things, accommodates the camshafts and the rocker arms for controlling the intake and exhaust valves, against the fuel injector to be inserted into a receiving bore in the cylinder head.
  • the assembly device is not itself inserted into the receiving bore for the fuel injector, but the assembly device forms an axial one Extension of the mounting hole, which extends up to one that closes the oil space
  • Cylinder head cover extends.
  • Fuel injector no tensile force acting in the disassembly direction is transferable.
  • DE 44 13 415 Cl shows a further assembly device with which a fuel injection valve can be mounted in a receiving bore in a cylinder head of an internal combustion engine. Lateral flats are provided on the nozzle holder of the fuel injector to be assembled in order to form support surfaces for a clamping claw. By tightening the clamping claw, the fuel injector to be assembled is fully pressed into the mounting hole in the cylinder head. Even with this known assembly device, it is not possible to dismantle the fuel injector for repair and maintenance work. Rather, the fuel injector must be pulled out of the receiving bore with another suitable tool after loosening and dismantling the clamping claw, as a result of which the fuel injector can be damaged.
  • the mounting device according to the invention with the characterizing features of the main claim has the advantage that the fuel injector can not only be pressed into the receiving bore of the cylinder head, but, since the mounting device according to the invention allows the application of a tensile force, the fuel injector also for repair and maintenance purposes from Receiving hole of the cylinder head can be pulled out.
  • Fuel injector can be inserted into the receiving bore of the cylinder head, an axial guidance of the mounting device through the receiving bore is guaranteed.
  • a first collar section provided at a first end of the assembly device according to the invention serves for the non-positive connection with the
  • Fuel injection valve while a second collar section provided at the opposite end provides an engagement surface for a tool with which the
  • Mounting device can be subjected to both a pressing and a tensile force.
  • the pressing or tensile force advantageously acts on a section of the fuel injector located relatively deep in the receiving bore, so that a pressing or tensile force load on the relatively sensitive upstream section of the fuel injector is avoided.
  • the fact that a jacket at least partially surrounds the fuel injector results in particularly good protection of the fuel injector when it is pressed into the receiving bore of the cylinder head.
  • the assembly device according to the invention therefore enables particularly simple and gentle assembly and disassembly of the fuel injector on the cylinder head.
  • the assembly can also be carried out automatically or semi-automatically with the assembly device according to the invention, which considerably reduces the assembly costs.
  • a further advantage is that the fuel injector can be inserted into the mounting device in a particularly simple and convenient manner if the mounting device has a corresponding lateral recess.
  • the first ring section can advantageously be designed like a fork and comprise the receiving section of the fuel injector, which is preferably designed as an annular groove.
  • inwardly projecting can advantageously on the jacket body Projections can be provided around the upstream side relative to the receiving section
  • the assembly device according to the invention can be manufactured in one piece from a sheet metal, preferably by deep drawing. Furthermore, on the casing body of the mounting device, e.g. Fixing elements designed as clips can be attached in a latching manner, so that electrical supply lines of the fuel injector can be fixed to the jacket body. Furthermore, the mounting device according to the invention can have hydraulic and / or electrical plug connections in a particularly advantageous manner in order to simplify the connection to the electrical feed lines and the fuel feed line.
  • FIG. 1 shows an axial section through an assembly device according to the invention in accordance with a first exemplary embodiment
  • FIG. 2 shows a top view of the assembly device according to the invention shown in FIG. 1
  • FIG. 3 shows an axial section through the cylinder head of an internal combustion engine and into an accommodating bore of the cylinder head 4
  • FIG. 5 shows an axial section through the cylinder head of an internal combustion engine and a Mounting device according to the invention inserted into a receiving bore of the cylinder head according to a second embodiment.
  • Mounting device 1 comprises a jacket body 3 which is bent about a longitudinal axis 2 and which is essentially partially cylindrical. At a first end 6 which can be inserted into a receiving bore 4 of a cylinder head 5 of an internal combustion engine shown in FIG. 3, the assembly device 1 according to the invention has a first
  • the mounting device 1 has a lateral recess 8 which extends over the entire axial extent of the mounting device 1 and via which a fuel injector 20 can be inserted into the mounting device 1.
  • the first collar section 7 takes a suitably, e.g. formed as an annular groove receiving portion 25 of the fuel injector 20.
  • the first collar section 7, as can be seen in FIG. 2 can be shaped like a fork by connecting a straight collar section 7b and 7c on both sides to a partially cylindrical collar section 7a which is bent in the exemplary embodiment.
  • the straight collar sections 7b and 7c can run parallel to one another.
  • the straight collar sections 7b and 7c can be aligned with one another in such a way that the recess 8 narrows slightly counter to the insertion direction 9 of the fuel injector 20 in order to latch the fuel injector 20 in a latching manner.
  • the jacket body 3 is, as can be seen from FIG. 2, bent in a corresponding manner in a partially cylindrical jacket section 3a in the exemplary embodiment by 180 °, a straight jacket section 3b or 3c being connected on both sides to the partially cylindrical jacket section 3a.
  • a second collar section 11 is provided at the end 10 of the assembly device 1 according to the invention opposite the first end 6.
  • the second collar section 11 offers both an engagement surface 12a for application of a pressing force for pressing the fuel injection valve 20 into the receiving bore 4 of the cylinder head 5, and also a further engagement surface 12b for application of a pulling force acting in the opposite direction, which is for dismantling of fuel injector 1 is required.
  • the Mounting device 1 is made in the preferred embodiment shown from a sheet metal strip by deep drawing. In the manufacturing process, the jacket body is first shaped in the manner shown in FIGS. 1 and 2 and then the first collar section 7 is bent inwards so that it extends perpendicular to the longitudinal axis 2. In a corresponding manner, the second collar section 11 is bent outwards so that it also extends perpendicular to the longitudinal axis 2.
  • Fig. 3 shows a section through the cylinder head 5 of an internal combustion engine, not shown in detail, in the receiving bore 4, a fuel injector 20 is pressed to the mounting device 1 also shown in section is pressed.
  • the receiving bore 4 is designed as a stepped bore adapted to the nozzle body 23 of the fuel injection valve 20, the spray opening 22 at the mouth of the receiving bore 4 into the combustion chamber 24
  • Internal combustion engine is arranged.
  • the fuel injector 20 is first inserted into the lateral recess 8 of the assembly device 1 according to the invention in such a way that the fuel injector 20 is fixed, for example upstream of the nozzle holder 21, to a receiving section designed as an annular groove 25 on the first collar section 7 of the assembly device 1.
  • the fuel injection valve 20 is pressed into the receiving bore 4 of the cylinder head 5
  • the fuel injection valve 20 is inserted into the receiving bore 4 together with the mounting device 1 according to the invention and pressed into the receiving bore 4 by means of a tool (not shown) which engages the engagement surface 12a of the second collar section 11.
  • a clamping claw is suitable as a tool.
  • the pressing force acting on the engagement surface 12a of the second collar section 11 is transmitted in the x-direction (see arrow x in FIG. 3) via the mounting device 1 according to the invention to the receiving section 25 of the fuel injector 20, without the opposite to the receiving section 25 to apply the pressing force upstream region 26 of the fuel injection valve 20.
  • the second collar section 11 protrudes completely into the receiving bore 4 together with the fuel injection valve 20 shown in FIG. 3 Montagevomchtung 1 out of the mounting hole 4, so that the tool without
  • inwardly projecting lobe-like projections 30 can be provided on the casing body 3 with dashed lines in order to additionally fix the fuel injector 20 to the mounting device 1, for example by the projections 30 resting against shoulders of the valve body.
  • the tab-like projections 30 can be punched out of the assembly device 1, which is preferably made of sheet metal, and subsequently bent inwards.
  • FIG. 4 shows a view of the assembly device 1 according to FIG. 2 corresponding to FIG.
  • latching elements 31b and 31c are formed on the straight jacket sections 3b and 3c, which serve to receive one or more fixing elements 32.
  • the fixing elements 32 are designed in the shape of a bow, enclose an electrical supply line 33, which can be seen better in FIG. 3, and snap into the locking elements 31b and 31c.
  • a plurality of fixing elements 32 axially offset along the longitudinal axis 2 can be provided, which fix the electrical supply line 33 to the jacket body 3 several times.
  • the fixing elements 32 can also be designed to accommodate a plurality of electrical or other supply lines. Through the Fixing elements 32 prevent damage to the electrical supply line 33 during the assembly and disassembly of the fuel injector 20.
  • the functions of the electrical connection and a hydraulic connection for supplying the fuel to the assembly device 1 according to the invention can also be integrated.
  • a hydraulic and an electrical plug connection are conceivable, which are firmly connected to the assembly device 1 according to the invention. These plug connections engage laterally when the assembly device 1 is inserted into the fuel injection valve 20 and end outside the receiving bore 4 of the cylinder head 5 for further connection to a cable harness or a fuel supply line.
  • FIG. 5 shows, in a manner similar to FIG. 3, a section through the cylinder head 5 of an internal combustion engine (not shown in further detail), in the receiving bore 4 of which a fuel injector 20, which is also fastened to the assembly device 1 shown in section, is pressed.
  • the receiving bore 4 is designed as a stepped bore adapted to the nozzle body 23 of the fuel injection valve 20, the spray opening 22 being arranged at the mouth of the receiving bore 4 in the combustion chamber 24 of the internal combustion engine.
  • the mounting device 1 shown in FIG. 5 has in the region of its first collar section 7 contact elements 40 which protrude radially inwards and which interact with corresponding counterparts 41 of the fuel injection valve 20 for electrical contacting .
  • the contact elements 40 can consist, for example, of radially protruding metal strips, while the counterparts 41 of the fuel injector 20 can be the contact elements 40 comprising contact springs that are like pliers. Of course, other electrical contact options known as such can also be used.
  • the mounting device 1 shown in FIG. 5 has a contact plug 42 which interacts with a contact socket (not shown).
  • Contact pins 43 are provided on the contact plug 42. Each of the contact pins 43 is connected to one of the contact elements 40 via a conductor element 44.
  • the conductor elements 44 can be, for example, contact tabs made from a sheet metal strip, which are extrusion-coated with a suitable plastic for electrical insulation with respect to the mounting device 1.
  • the contact plug 42 can also be injection molded onto the assembly device 1 according to the invention by means of a plastic injection molding process. If the assembly device 1 is made of a metal, the jacket body 3 insulated from the conductor elements 44 can simultaneously serve for the ground connection of the fuel injector 20.
  • the conductor elements 44 can either run inside the jacket body 3 or can be applied to the inner or outer jacket surface of the jacket body 3.
  • the contact plug 42 is particularly easily accessible if the contact pins 43 are preferably angled at 45 ° with respect to the longitudinal axis 2 of the mounting device 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un dispositif de montage (1) permettant de monter une soupape d'injection (20) de carburant dans un logement (4) pratiqué dans une culasse (5) d'un moteur à combustion interne. Ce dispositif de montage (1) possède une enveloppe (3) englobant au moins partiellement la soupape d'injection (20) de carburant. Selon l'invention, le dispositif de montage (1) peut être introduit dans le logement (4) avec la soupape d'injection de carburant (20). A une extrémité (6) de l'enveloppe (3), une première section collerette (7), pliée vers l'intérieur, est raccordée par liaison de force à une section réceptrice (25) de la soupape d'injection de carburant, cette section réceptrice étant destinée à recevoir la section collerette (7), afin de transmettre une poussée destinée à enfoncer la soupape (20) dans le logement (4) ainsi qu'une traction en sens inverse. A une seconde extrémité (10) de l'enveloppe (3), opposée à la première extrémité (6), une seconde section collerette (11) coudée vers l'extérieur présente une surface d'accrochage (12a, 12b) destinée à un outil permettant d'appliquer la pression comme la traction.
EP97949950A 1997-02-17 1997-11-19 Dispositif de montage d'une soupape d'injection de carburant Expired - Lifetime EP0894193B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19705990A DE19705990A1 (de) 1997-02-17 1997-02-17 Montagevorrichtung zur Montage eines Brennstoffeinspritzventils
DE19705990 1997-02-17
PCT/DE1997/002705 WO1998036169A1 (fr) 1997-02-17 1997-11-19 Dispositif de montage d'une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP0894193A1 true EP0894193A1 (fr) 1999-02-03
EP0894193B1 EP0894193B1 (fr) 2003-03-05

Family

ID=7820461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97949950A Expired - Lifetime EP0894193B1 (fr) 1997-02-17 1997-11-19 Dispositif de montage d'une soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US5960774A (fr)
EP (1) EP0894193B1 (fr)
JP (1) JP4040108B2 (fr)
KR (1) KR100561787B1 (fr)
DE (2) DE19705990A1 (fr)
WO (1) WO1998036169A1 (fr)

Families Citing this family (19)

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Publication number Priority date Publication date Assignee Title
DE19838755B4 (de) * 1998-08-26 2006-11-09 Daimlerchrysler Ag Auf den Brennraum einer Brennkraftmaschine einspritzende Kraftstoffeinspritzdüse
DE19853586A1 (de) 1998-11-20 2000-05-25 Bosch Gmbh Robert Demontagevorrichtung zur Demontage eines Brennstoffeinspritzventils
DE19857485A1 (de) * 1998-12-14 2000-06-15 Bosch Gmbh Robert Montagevorrichtung zur Montage und Demontage eines Brennstoffeinspritzventils
DE19857474A1 (de) 1998-12-14 2000-06-15 Bosch Gmbh Robert Montagevorrichtung zur Montage und Demontage eines Brennstoffeinspritzventils
DE19908573A1 (de) * 1999-02-27 2000-08-31 Bosch Gmbh Robert Montage/Demontagevorrichtung zur Montage und/oder Demontage eines Brennstoffeinspritzventils
US6457456B1 (en) 2000-07-28 2002-10-01 Siemens Automotive Corporation Clip for injector to fuel supply assembly
US6382187B1 (en) 2000-08-07 2002-05-07 Siemens Automotive Corporation Clip for attachment of fuel supply assembly
US6845758B2 (en) * 2003-02-19 2005-01-25 International Engine Intellectual Property Company, Llc Fuel injector retainer assembly
JP4099668B2 (ja) * 2004-03-29 2008-06-11 株式会社デンソー 燃料噴射弁の取り付け構造およびそれに用いる固定部材
DE102005051005B4 (de) 2005-10-25 2025-01-02 Robert Bosch Gmbh Brennstoffeinspritzventil
EP2199592B1 (fr) * 2007-05-31 2011-10-12 Continental Automotive GmbH Dispositif de fixation pour fixer un injecteur de combustible dans une culasse d'un moteur à combustion
US7703421B2 (en) * 2008-07-31 2010-04-27 Caterpillar Inc. Cooling arrangement for a fuel injector and method
US8490264B2 (en) * 2010-03-09 2013-07-23 International Engine Intellectual Property Company, Llc Disassembly station
US8707556B2 (en) * 2011-08-17 2014-04-29 Bosch Automotive Service Solutions Llc Injector nozzle sleeve replacer and method
DE102012211230A1 (de) * 2012-06-29 2014-01-02 Robert Bosch Gmbh Brennstoffeinspritzventil
US9517551B2 (en) * 2013-06-06 2016-12-13 LR Inventions, LLC Fuel injector assembly apparatus and method
DE102013211108A1 (de) * 2013-06-14 2014-12-18 Robert Bosch Gmbh Zweiteiliger Kabelhalter für einen Kraftstoffinjektor
CN107076082B (zh) * 2014-11-19 2022-12-20 大陆汽车有限公司 用于内燃机的燃料轨组件
DE102021214315A1 (de) 2021-12-14 2023-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung Demontagevorrichtung zur Demontage eines Brennstoffeinspritzventils und Verfahren zur Demontage eines Brennstoffeinspritzventils

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Also Published As

Publication number Publication date
KR20000064926A (ko) 2000-11-06
JP4040108B2 (ja) 2008-01-30
JP2000509782A (ja) 2000-08-02
KR100561787B1 (ko) 2006-08-21
DE19705990A1 (de) 1998-08-20
US5960774A (en) 1999-10-05
EP0894193B1 (fr) 2003-03-05
WO1998036169A1 (fr) 1998-08-20
DE59709440D1 (de) 2003-04-10

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