EP1075597A1 - Dispositif de montage et/ou demontage d'une soupape d'injection de carburant - Google Patents

Dispositif de montage et/ou demontage d'une soupape d'injection de carburant

Info

Publication number
EP1075597A1
EP1075597A1 EP99973748A EP99973748A EP1075597A1 EP 1075597 A1 EP1075597 A1 EP 1075597A1 EP 99973748 A EP99973748 A EP 99973748A EP 99973748 A EP99973748 A EP 99973748A EP 1075597 A1 EP1075597 A1 EP 1075597A1
Authority
EP
European Patent Office
Prior art keywords
assembly
disassembly device
engagement
injection valve
section
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
EP99973748A
Other languages
German (de)
English (en)
Other versions
EP1075597B1 (fr
Inventor
Ferdinand Reiter
Heinz-Martin Krause
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 EP1075597A1 publication Critical patent/EP1075597A1/fr
Application granted granted Critical
Publication of EP1075597B1 publication Critical patent/EP1075597B1/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
    • B25B27/0035—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
    • 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
    • Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
    • Y10T29/53857—Central screw, work-engagers around screw
    • Y10T29/53878—Tubular or tube segment forms work-engager
    • 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
    • Y10T29/53909—Means comprising hand manipulatable tool
    • Y10T29/53943—Hand gripper for direct push or pull
    • 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
    • Y10T29/53909—Means comprising hand manipulatable tool
    • Y10T29/53943—Hand gripper for direct push or pull
    • Y10T29/53952—Tube sleeve or ferrule applying or removing

Definitions

  • the invention relates to an assembly / disassembly device for assembling and / or disassembling a fuel injection valve, in particular a high-pressure direct injection valve, into / from a receiving bore in a cylinder head of an internal combustion engine.
  • the high-pressure direct injection valve is used to inject fuel directly into the combustion chamber of the internal combustion engine.
  • the dismantling device has a jacket body which at least partially encompasses the fuel injector and which is to be inserted together with the fuel injector into the receiving bore of the cylinder head during assembly.
  • a first collar section is provided at a first end of the casing body and can be non-positively connected to a receiving section of the fuel injector that receives the first collar section.
  • a second collar section At a second end of the casing body opposite the first end there is a second collar section, which offers an engagement surface for a tool.
  • This disassembly device has the disadvantage that the connection of the disassembly device to the fuel injector is still is not optimized and the introduction of force can still be improved by the tool acting on the dismantling device. It is also disadvantageous that the dismantling device must be attached to the fuel injector before assembly and that subsequent attachment, for example, is not possible until maintenance or replacement.
  • the known tool can also be used only for disassembly, not for assembly of the fuel injector.
  • a disassembly device for a diesel injection nozzle is known from US Pat. No. 4,561,159.
  • An end region of the fuel injection valve opposite the spray opening can be inserted laterally into a slot in the dismantling device.
  • the disassembly device is not inserted into the mounting hole of the cylinder head and does not remain in the mounting hole in the assembled state.
  • the disassembly device resulting from US Pat. No. 4,561,159 is rather a tool extension which is attached to the fuel injector before the fuel injector is disassembled.
  • the connection of the dismantling device to the fuel injector is relatively cumbersome here. This tool can also only be used for disassembly purposes.
  • the assembly / disassembly device according to the invention with the features of claim 1 has the advantage that it can be easily fitted to and removed from the fuel injector, thereby making it easy to assemble and disassemble the fuel injector on the cylinder head of the internal combustion engine . This considerably simplifies maintenance work on the fuel injector.
  • the assembly / disassembly device according to claim 1 has a jacket body consisting of a tubular section and an engagement section, wherein the engagement section on the fuel injector by means of a radial engages on the inside projecting support surface and is adjustable between an engagement position in which a non-positive connection can be established with the fuel injector and a release position in which the assembly / disassembly device can be removed from the fuel injector.
  • the engagement section can be formed by at least two elastic engagement sections separated from one another by cutouts, which can be deformed in the radial direction by means of an adjustment mechanism. An adjustment between the engagement position and the release position is possible in a particularly simple manner.
  • the adjustment mechanism can comprise an inner part which can be inserted into the casing body and rotatable relative to it, with a cam section acting on the elastic engagement part sections. Depending on the rotational position of the cam section, the radial position of the ends of the engagement sections engaging on a groove of the fuel injector is changed. This construction enables easy handling and a stable construction of the assembly / disassembly device.
  • the inner part is advantageously provided with bores and the casing body is provided with these elongated openings, which are formed in the same position in the axial direction, for engaging a tool such as a bolt.
  • the bolt can exert a greater force on the inner part.
  • the adjustment mechanism can alternatively consist of two parts, one that can be placed on the casing body and rotatable relative to the handle part and a detachably connectable cam part. Since the grip part is placed on the jacket body of the assembly / disassembly device, it is directly accessible. Therefore, no elongated opening is required in the casing body, which could impair the stability of the tool.
  • the handle part is preferably provided with bores for the engagement of a tool such as a bolt.
  • the assembly / disassembly device preferably has pins arranged at the front end of the engagement sections for axially supporting the assembly / disassembly device on the valve housing during assembly. These pins allow pressure forces to be exerted from the assembly / disassembly device onto the fuel injector and thus enable the injector to be assembled securely.
  • the assembly / disassembly device can also have inclined guide surfaces attached to the inside of the engagement sections for support on corresponding guide surfaces on the outside of the fuel injector.
  • the front ends of the engagement sections reach the groove formed on the fuel injection valve and snap there by means of the inwardly projecting bearing surface.
  • the assembly / disassembly device can be manufactured, for example, by rolling from a steel sheet. However, it is also possible to assemble / disassemble the device or parts thereof from a plastic reinforced with glass fibers, for example by means of an injection molding process.
  • FIG. 1 shows a mont ge / disassembly device according to the invention mounted on a fuel injection valve inserted into a receiving bore of a cylinder head shown in section;
  • 2A is an elevation of a first embodiment of an inventive
  • Fig. 2B is a side view of the embodiment shown in Fig. 2A;
  • FIG. 2C shows a section along the line IIC-IIC in FIG. 2A;
  • FIG. 2D shows a section along the line IID-IID in FIG. 2B;
  • FIGS. 1 and 2 shows an inner part of the assembly / disassembly device from FIGS. 1 and 2;
  • Fig. 3B is a section along the line IIIB-IIIB in Fig. 3A;
  • Fig. 4 mounted on a fuel injector inserted into a receiving bore of a cylinder head shown in section
  • FIG. 5A is a partially sectioned elevation of a jacket body of the assembly / disassembly device of FIG. 4;
  • 5B is a side view of a jacket body of the assembly / disassembly device of FIG. 5A;
  • 5C shows a section along the line VC-VC in FIG. 5A;
  • FIGS. 4 and 5 shows a handle part for an assembly / disassembly device partially shown in FIGS. 4 and 5;
  • FIG. 6B is a bottom view of the handle part shown in FIG. 6A;
  • FIGS. 4 and 5 shows a longitudinal section of the cam part for an assembly / disassembly device partially shown in FIGS. 4 and 5;
  • Fig. 7B is a section along the line VIIB-VIIB in Fig. 7A.
  • FIG. 1 shows a first exemplary embodiment of an assembly / disassembly device according to the invention located on a cylinder head shown in section in the engaged position.
  • a fuel injection valve 22 is used, which is used for direct injection of fuel into a combustion chamber 30 of the internal combustion engine.
  • the fuel injector 22 has a spray section 23, an intermediate section 24 and an inlet section 25.
  • the inlet section 25 of the fuel injector 22 has a fuel inlet opening 26 which can be connected to a fuel distributor line (not shown) and is sealed by means of a sealing ring 27.
  • An electrical connection cable (not shown), which can be connected to a plug connection 28, is used for the electrical actuation of the fuel injection valve 22.
  • the plug connection 28 can, for example, be injection molded onto the fuel injection valve 22.
  • the fuel injection valve 22 can also be provided with a piezoelectric or a magnetostrictive actuator.
  • an annular groove 29 is formed, on which a support surface 7 (see FIG. 2A) of the assembly / disassembly device 1 can engage.
  • the assembly / disassembly device is therefore pushed into the groove 29 of the fuel injection valve 22 via inclined guide elements 31 and then engages in the groove 29.
  • the guide elements 31 are, for example, five stiffening ribs which are arranged circumferentially at the height of the plug connection 28 and are also molded on.
  • FIGS. 2A to 2D show in detail the first embodiment of the assembly / disassembly device according to the invention, generally designated by the reference number 1.
  • This has a jacket body 2 with a tubular section 4 and an engagement section 3, which consists of two mutually opposing and separated by recesses 11, 12 sections 3a and 3b.
  • the partial attack sections 3a, 3b are preferably of relatively narrow design and occupy an angular range of up to 90 °, for example.
  • the inwardly projecting bearing surfaces 7a and 7b formed on the front end of the engagement sections 3a, 3b opposite the tubular section 4 together with the engagement sections 3a and 3b form latching hooks which hook onto the groove 29 on the fuel injection valve 22.
  • the attack sections 3a, 3b have a certain elasticity, so that their front ends are elastically movable in the radial direction.
  • To the inside projecting bearing surfaces 7a, 7b adjoin inclined guide surfaces 6, which slide over the guide elements 31 on the fuel injection valve 22, so that the front ends of the engagement sections 3a, 3b push apart and considerably facilitate the attachment of the assembly / disassembly tool 1 for disassembling a fuel injector 22.
  • Pins 5 adjoin the guide surfaces 6 and, in the engaged position of the assembly / disassembly device 1, abut against a stop 32 on the fuel injection valve 22.
  • compressive forces can be transmitted from the assembly / disassembly device 1 to the fuel injector 22 via the pins 5.
  • the embodiment of the assembly / disassembly device 1 according to the invention shown in FIGS. 1 to 3 has an inner part 40 with a cam section 41 which can be inserted into the casing body 2 and can be rotated therein.
  • the inner part 40 as shown in particular in FIG. 3A, has a bore 42 at its rear end and a cam section 41 at its front end opposite this, which is shown in cross section in FIG. 3B.
  • the angular position of the cam section 41 which acts on the elastic engagement part sections 3a, 3b, changes.
  • the inner part 40 is present, for example, within the casing body 2 such that two opposite cam ends 43, 44 extend into the cutouts 11 and 12.
  • the engagement sections 3a, 3b can be bent apart and adjusted between an engagement position in which a non-positive connection can be established with the fuel injection valve and a release position (shown in dash-dot lines in FIG. 2A) in which the assembly / disassembly device 1 can be removed from the fuel injection valve 22 is.
  • a release position shown in dash-dot lines in FIG. 2A
  • the inner part 40 is inside the jacket body 2 z. B. rotated by 90 ° with respect to the engagement position.
  • the assembly of a fuel injector 22 using the assembly / disassembly device 1 according to the invention can be carried out as follows.
  • the assembly / disassembly device 1 is pushed over the fuel injector 22 to be assembled with the aid of the guide surfaces 6 mentioned above and latched or attached to the fuel injector 22 by actuating the adjusting mechanism by rotating the inner part 40.
  • the fuel injector 22 can then be moved to the receiving bore 21 in the cylinder head 20 with the aid of the assembly / disassembly device 1 and then fastened there by means of the pins 5. Then, by rotating the inner part 40 relative to the casing body 2, the engagement section 3 is brought into its release position, and the assembly / disassembly device 1 can be removed again without problems.
  • the former has two bores 42 and the latter two elongated openings 10 for engagement by means of a tool such as a bolt. This can be pushed through the largely opposite longitudinal openings 10 and the bores 42 in the wall of the casing body 2 and allows rotation of both parts of the assembly / disassembly device 1 with little effort.
  • a tool such as a bolt
  • the device 1 is attached and locked by means of the adjustment mechanism or the guide elements 31 arranged on the outside of the fuel injection valve 22.
  • the contact surfaces 7a, 7b rest on the groove 29 of the fuel injector 22, so that tensile forces can be exerted and the fuel injector 22 can be removed with the assembly / disassembly device 1.
  • the fuel injector 22 is by means of of the adjustment mechanism released from the assembly / disassembly device 1.
  • FIG. 4 to 7 show a second embodiment of the assembly / disassembly device 1 according to the invention.
  • the casing body 2 with the tubular section 4 and the engagement section 3 corresponds to the first embodiment with the exception that no elongated openings 10 are provided in the tubular section 4.
  • a handle part 50 and a cam part 60 are provided, which can be firmly connected to one another, for example by screwing.
  • the grip part 50 is of a stepped, cylindrical design and can be placed on the rear end of the tubular section 4 of the assembly / disassembly device 1 on account of its stepped design.
  • the grip part 50 has a connecting pin 52 with an external thread for insertion into an internal blind hole-like bore 62 of the cam part 60, which has an internal thread.
  • the cam member 60 has a cam portion 61 which is shown in cross section in Fig. 7B. While the handle part 50 can be placed at the rear end of the tubular section 4 of the assembly / disassembly device 1, the cam part 60 is inserted from the opposite end between the engagement section sections 3a, 3b and then fixed with the handle part 50. By rotating the grip part 50, the cam section 61 also rotates, as a result of which the engagement section 3 can be bent open and moved between an engagement position and a release position, as in the first exemplary embodiment.
  • the handling of the second exemplary embodiment shown in FIGS. 4 to 7 thus corresponds to that of the first exemplary embodiment shown in FIGS. 1 to 3, with the difference that the user can grip the handle part 50 directly and thus can more easily adjust between the engagement position and the release position.
  • two opposite bores 51 are also provided for engaging a tool such as a bolt 45.
  • no elongated openings are required in the tubular section 4, as a result of which the mechanical stability of the assembly / disassembly device 1 is increased.

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/démontage (1) servant à monter une soupape d'injection de carburant (22) dans un orifice de logement (21) d'une culasse (20) d'un moteur à combustion interne et à démonter cette même soupape d'injection. Ce dispositif (1) présente une gaine (2) constituée d'une partie tubulaire (4) et d'une partie de contact (3) qui vient en contact avec la soupape d'injection de carburant (22) au moyen d'une surface d'appui (7) faisant saillie vers l'intérieur dans le sens radial. Cette partie de contact (3), qui peut être formée par au moins deux parties de contact (3a, 3b) élastiques, séparées l'une de l'autre par des évidements (11, 12), peut être déplacée entre une position de contact, dans laquelle une liaison de force est établie avec la soupape d'injection de carburant (22), et une position de libération, dans laquelle le dispositif de montage/démontage peut être retiré de la soupape d'injection de carburant (22).
EP99973748A 1999-02-27 1999-09-30 Dispositif de montage et/ou demontage d'une soupape d'injection de carburant Expired - Lifetime EP1075597B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19908573A DE19908573A1 (de) 1999-02-27 1999-02-27 Montage/Demontagevorrichtung zur Montage und/oder Demontage eines Brennstoffeinspritzventils
DE19908573 1999-02-27
PCT/DE1999/003142 WO2000052327A1 (fr) 1999-02-27 1999-09-30 Dispositif de montage et/ou demontage d'une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1075597A1 true EP1075597A1 (fr) 2001-02-14
EP1075597B1 EP1075597B1 (fr) 2004-09-29

Family

ID=7899099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99973748A Expired - Lifetime EP1075597B1 (fr) 1999-02-27 1999-09-30 Dispositif de montage et/ou demontage d'une soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6363596B1 (fr)
EP (1) EP1075597B1 (fr)
JP (1) JP2002538370A (fr)
KR (1) KR20010043036A (fr)
DE (2) DE19908573A1 (fr)
WO (1) WO2000052327A1 (fr)

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DE10344622A1 (de) * 2003-09-25 2005-04-28 Bosch Gmbh Robert Demontagewerkzeug für Brennstoffeinspritzventile und Verfahren zur Demontage eines Brennstoffeinspritzventils
DE10344623A1 (de) * 2003-09-25 2005-04-28 Bosch Gmbh Robert Demontagewerkzeug für Brennstoffeinspritzventile und Verfahren zur Demontage eines Brennstoffeinspritzventils
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US8230567B2 (en) * 2009-11-02 2012-07-31 Denning Eddie C Tie down strap rollup device
US8464412B2 (en) * 2010-01-19 2013-06-18 Cheng Uei Precision Industry Co., Ltd. Clutching jig
US8434206B2 (en) * 2010-02-03 2013-05-07 Cheng Uei Precision Industry Co., Ltd. Clutching jig
US8490264B2 (en) * 2010-03-09 2013-07-23 International Engine Intellectual Property Company, Llc Disassembly station
US7963012B1 (en) * 2010-05-28 2011-06-21 JMW Golf LLC Tool for seating a grip on the shaft of a golf club
DE202010009355U1 (de) 2010-06-22 2010-10-07 Werkzeug Pichler Gesellschaft M.B.H. & Co. Kg Demontagevorrichtung zum Demontieren eines Brennstoffinjektors
JP5891855B2 (ja) * 2012-03-06 2016-03-23 株式会社デンソー 燃料噴射弁
US9751167B1 (en) 2013-10-29 2017-09-05 Clayton Note Injector cup pressing tools
CN104029175A (zh) * 2014-06-10 2014-09-10 成都大漠石油机械有限公司 用于阀杆锁紧螺母定位的安装工具
CN104057420A (zh) * 2014-06-10 2014-09-24 成都大漠石油机械有限公司 阀杆锁紧螺母的可调安装工具
DE102015209650A1 (de) * 2015-05-27 2016-12-01 Bayerische Motoren Werke Aktiengesellschaft Kraftstoffinjektor
DE102017212536B4 (de) * 2017-07-21 2022-03-24 Ford Global Technologies, Llc Werkzeug zum Heranführen einer flexiblen Leitung an ein Anschlussteil
GB2572012A (en) 2018-03-16 2019-09-18 Delphi Tech Ip Ltd Handling tool
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
EP1075597B1 (fr) 2004-09-29
KR20010043036A (ko) 2001-05-25
WO2000052327A1 (fr) 2000-09-08
US6363596B1 (en) 2002-04-02
JP2002538370A (ja) 2002-11-12
DE59910668D1 (de) 2004-11-04
DE19908573A1 (de) 2000-08-31

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