EP1064461A1 - Dispositif pour le demontage d'une soupape d'injection de carburant - Google Patents

Dispositif pour le demontage d'une soupape d'injection de carburant

Info

Publication number
EP1064461A1
EP1064461A1 EP99952329A EP99952329A EP1064461A1 EP 1064461 A1 EP1064461 A1 EP 1064461A1 EP 99952329 A EP99952329 A EP 99952329A EP 99952329 A EP99952329 A EP 99952329A EP 1064461 A1 EP1064461 A1 EP 1064461A1
Authority
EP
European Patent Office
Prior art keywords
injection valve
fuel injection
engagement
section
disassembly device
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
EP99952329A
Other languages
German (de)
English (en)
Other versions
EP1064461B1 (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 EP1064461A1 publication Critical patent/EP1064461A1/fr
Application granted granted Critical
Publication of EP1064461B1 publication Critical patent/EP1064461B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • Y10T29/53552—Valve applying 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
    • Y10T29/53909—Means comprising hand manipulatable tool
    • Y10T29/53943—Hand gripper for direct push or pull

Definitions

  • Disassembly device for dismantling a fuel injector
  • the invention relates to a disassembly device for disassembling a fuel injection valve, in particular a high-pressure direct injection valve, from a receiving bore in 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 relates to a dismantling device according to the preamble of the main claim. It is already known from DE 197 05 990 AI to use a dismantling device with a jacket body which at least partially encompasses the fuel injector for dismantling a direct-injection fuel injector.
  • the jacket body must be inserted into the bore on the cylinder head together with the fuel injector during assembly.
  • a first collar section is provided, which can be non-positively connected to a receiving section of the fuel injection valve that receives the first collar section.
  • 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.
  • 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.
  • the dismantling device according to the invention with the characterizing features of both claim 1 and claim 2 has the advantage that the dismantling device can be mounted on the fuel injector with relatively little effort, which makes handling much easier.
  • the fuel injector can be inserted laterally into the engagement portion with little effort due to the crescent-shaped tapered design of the support surface.
  • the narrowly designed engagement sections can snap together resiliently with the fuel injector.
  • the dismantling device engages relatively close to the injection section of the fuel injector, so that the fuel injector does not have an axial dismantling force is applied.
  • components with lower load capacity in particular plastic injection molded parts, can be used in the inlet-side section of the fuel injection valve.
  • a tubular section completely surrounding the fuel injector is connected to the engagement section or the engagement sections.
  • This tubular section results in improved stability of the dismantling device.
  • it is easier to provide engagement elements for engaging a dismantling tool for example in the form of bores penetrating the tubular section.
  • a pliers-like tool can be inserted into the bores, so that the dismantling device can be gripped without difficulty by this pliers-like tool.
  • the disassembly device can be manufactured, for example, by rolling from a steel sheet. However, it is also possible to manufacture the disassembly device from a plastic reinforced with glass fibers, for example using a plastic injection molding process.
  • FIG. 1A shows an elevation of a first exemplary embodiment of a dismantling device according to the invention
  • Fig. 1B is a side view of the embodiment shown in Fig. 1A;
  • Fig. IC is a plan view of the embodiment shown in Figs. 1A and 1B;
  • FIG. 2 shows the dismantling device according to the invention, mounted on a fuel injection valve inserted into a cut-out bore of a cylinder head shown in section, in accordance with the exemplary embodiment shown in FIGS. 1A, 1B and IC;
  • FIG. 3A shows a sectional elevation of a second exemplary embodiment of the dismantling device according to the invention
  • FIG. 3B is a side view of the embodiment shown in FIG. 3A;
  • Fig. 3C is a section along the line III C-III C in Fig. 3A and 4 shows the dismantling device according to the invention mounted on a fuel injection valve inserted into a receiving bore of a cylinder head shown in section in accordance with the exemplary embodiment shown in FIGS. 3A, 3B and 3C.
  • the dismantling device according to the invention serves as an auxiliary tool when dismantling a fuel injection valve from a receiving bore in a cylinder head of an internal combustion engine during maintenance work or when replacing the fuel injection valve.
  • the dismantling device generally designated by the reference number 1, has a jacket body 2, which is divided into an engagement section 3 and a tubular section 4.
  • the attack section 3 is designed in the form of a half pipe, as can be seen better from FIG. IC, which shows a plan view of the dismantling device 1 shown in FIG. 1A.
  • An axial recess 5 which is completely enclosed by the tubular section 4 and completely penetrates the tubular section 4 opens forward in the region of the engagement section 3 in FIG. 1A and in FIG. 1B, which shows a side view of the exemplary embodiment shown in FIG. 1A Side.
  • the inlet-side section of a fuel injection valve can be inserted into the dismantling device 1 in such a way that a radially inwardly projecting support surface 7, which is formed on the end 6 of the engagement section 3 opposite the tubular section 4, can engage at a suitable point on the fuel injection valve.
  • the support surface 7 is crescent-shaped, ie the support surface 7 tapers in radial width m direction to the free ends 8 and 9 of the engagement section 3.
  • This crescent-shaped design of the bearing surface 7 ensures that the dismantling device 1 can be mounted on the fuel injector mounted on the cylinder head without difficulty and without great effort.
  • the narrow extensions of the bearing surface 7 to the free ends 8 and 9 of the engagement section 3 result in improved guidance of the dismantling device 1 and less effort when attaching to the fuel injector.
  • two bores 10 and 11 are provided on the tubular section 4 in the exemplary embodiment and extend perpendicular to the longitudinal axis 12 of the dismantling device 1.
  • the bores 10 and 11 serve as engagement elements for a tool acting on the dismantling device 1.
  • the tool can, for example, be designed in the manner of pliers, with a first pliers wing m being inserted into the first bore 10 and a second pliers wing m being the second bore 11, so that the dismantling device 1 can be gripped easily by the pliers-like tool.
  • FIG. 2 shows the cut cylinder head 20 of an internal combustion engine.
  • a fuel injection valve 22 is used in a receiving bore 21 and is used to directly inject fuel into a combustion chamber 30 of the internal combustion engine.
  • the elements of the dismantling device 1 already described with reference to FIGS. 1A, IB and IC are provided with the same reference numerals, so that a repetitive description is unnecessary.
  • 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.
  • an annular circumferential groove 29 is formed, on which the bearing surface 7 of the dismantling device 1 can engage.
  • the disassembly device 1 is therefore laterally inserted into this groove 29 of the fuel injection valve 22.
  • the bearing surface 7 according to the invention crescent-shaped, i. H. tapering towards the free ends 8, 9 is formed.
  • the dismantling device 1 After mounting or pushing the dismantling device 1 onto the fuel injection valve 22, the dismantling device can be gripped at the bores 10 and 11 by a crossbar or by a plier-like tool, as described, so that the fuel injection valve 22 closes out of the receiving bore 21 of the cylinder head 20 Maintenance or replacement can be removed.
  • the tubular section 4 gives the dismantling device 1 increased stability and strength.
  • 3A, 3B and 3C show a second exemplary embodiment of the dismantling device 1 according to the invention. Elements already described with reference to the exemplary embodiment shown in FIGS. 1A, IB and IC are provided with corresponding reference numerals, so that a repetitive description is unnecessary in this regard.
  • FIGS. 3A to 3C In contrast to the exemplary embodiment described with reference to FIGS. 1A to IC, there is not just one in the exemplary embodiments illustrated in FIGS. 3A to 3C
  • Attack section 3 exists, but there are two diametrically opposite. arranged attack sections 3a and 3b provided. The attack sections 3a and 3b are separated from one another by cutouts 40 and 41. The
  • Attack sections 3a, 3b are relatively narrow and preferably occupy a maximum angular range of 90 °.
  • Attack sections can be provided, which are preferably arranged circumferentially evenly distributed on the tubular section 4 at the same distance from each other.
  • lateral flattenings 44 can be provided, as shown in FIG. 3A.
  • a flattening 44 is shown in FIG. 3A only for the left attack section 3a.
  • the opposite right attack section 3b can also be formed in the same way.
  • one or two lateral recesses 42, 43 can also be provided in the transition region between the tubular section 4 and the engagement sections 3a and 3b.
  • Such lateral recesses 42 and 43 are in FIG. 3B, which is a side view of the embodiment shown in FIG. Example shows apart from the flattening 44 shown.
  • FIG. 3C shows a section along the line III C-III C in FIG. 3A, the flattening 44 also being clearly visible here.
  • the dismantling device 1 consists of two partial bodies 45 and 46, which are assembled at a parting line 47.
  • the two partial bodies 45 and 46 can, for example, be produced independently of one another by rolling and can either be butt-fitting at the parting line 47 or connected to one another in a latched manner as in the exemplary embodiment shown. If the two partial bodies 45 and 46 abut each other, they are preferably connected to one another by welding, soldering or the like.
  • the first partial body 45 has a first fastening element 48, while the second partial body 46 has a second fastening element 49.
  • the first fastening element 48 of the first partial body 45 engages behind a recess 50 adapted to the shape of the fastening element 48, while the second fastening element 49 of the second partial body 46 engages behind a correspondingly shaped recess 51 of the first partial body 45.
  • the two partial bodies 45 and 46 can additionally be connected to one another by welded or soldered seams.
  • the parting line 47 can also be guided in such a way that the fastening elements 48 and 49 do not engage behind the recesses 50 and 51 but only engage in corresponding recesses.
  • the parting line 47 can be guided in a zigzag shape, for example.
  • FIG. 4 shows, in a manner corresponding to FIG. 2, the cut cylinder head 20 of an internal combustion engine, which has a receiving bore 21 into which the fuel injection valve 22 is inserted.
  • the fuel injection valve 22 is designed in the same way as the combustion Fabric injection valve, which has already been described with reference to FIG. 2.
  • a dismantling device 1 acts on the fuel injection valve 22 in accordance with the second exemplary embodiment described with reference to FIGS. 3A to 3C.
  • the contact surfaces 7a and 7b engage the groove 29 of the fuel injection valve 22.
  • the dismantling device 1 is designed to be comparatively narrower in accordance with the second exemplary embodiment and is therefore easier to insert into a trough 60 of the cylinder head 20 and is easier to connect to the fuel injection valve 22 there.
  • a suitable dismantling tool also acts on the bores 10 and 11.

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 (1) servant au démontage d'une soupape d'injection de carburant (22) placée dans un orifice de logement (21) d'une culasse (20) d'un moteur à combustion interne. Ce dispositif de démontage (1) présente une gaine (2) entourant au moins en partie la soupape d'injection (22) et comportant une section de contact (3) qui vient coopérer avec la soupape d'injection (22) au moyen d'une surface d'appui (7) faisant saillie radialement vers l'intérieur. La section de contact (3) de la gaine (2) entoure la soupape d'injection (22) uniquement dans une zone angulaire maximale de 180° formée entre deux extrémités libres (8, 9). La surface d'appui (7) se rétrécit en direction des extrémités libres (8, 9) de la section de contact (3).
EP99952329A 1998-11-20 1999-08-07 Dispositif pour le demontage d'une soupape d'injection de carburant Expired - Lifetime EP1064461B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19853586 1998-11-20
DE19853586A DE19853586A1 (de) 1998-11-20 1998-11-20 Demontagevorrichtung zur Demontage eines Brennstoffeinspritzventils
PCT/DE1999/002472 WO2000031410A1 (fr) 1998-11-20 1999-08-07 Dispositif pour le demontage d'une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1064461A1 true EP1064461A1 (fr) 2001-01-03
EP1064461B1 EP1064461B1 (fr) 2004-08-04

Family

ID=7888460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99952329A Expired - Lifetime EP1064461B1 (fr) 1998-11-20 1999-08-07 Dispositif pour le demontage d'une soupape d'injection de carburant

Country Status (7)

Country Link
US (2) US6397445B1 (fr)
EP (1) EP1064461B1 (fr)
JP (1) JP2003517127A (fr)
KR (1) KR20010034226A (fr)
CZ (1) CZ294280B6 (fr)
DE (2) DE19853586A1 (fr)
WO (1) WO2000031410A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10335157A1 (de) * 2003-07-31 2005-03-03 Robert Bosch Gmbh Montagewerkzeug für Brennstoffeinspritzventile
DE102004060983B4 (de) * 2004-12-17 2017-02-02 Robert Bosch Gmbh Brennstoffeinspritzventil
US8490264B2 (en) * 2010-03-09 2013-07-23 International Engine Intellectual Property Company, Llc Disassembly station
CN103915948B (zh) * 2012-12-28 2016-09-21 胡森林 全自动转子网线机
DE102017212536B4 (de) * 2017-07-21 2022-03-24 Ford Global Technologies, Llc Werkzeug zum Heranführen einer flexiblen Leitung an ein Anschlussteil
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

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US144074A (en) * 1873-10-28 Improvement in spike-bars
US949337A (en) * 1907-09-30 1910-02-15 Emery Bruley Nail or spike puller.
US3739452A (en) 1971-09-24 1973-06-19 W Gadberry Diesel engine injector puller
US4050148A (en) * 1976-06-14 1977-09-27 Cutler-Hammer, Inc. Snap-in bushing switch removal tool
US4293992A (en) 1979-09-17 1981-10-13 Webb James E Diesel fuel injector tool
US4305193A (en) * 1980-01-11 1981-12-15 Anderson Steven C Zone control valve removal tool and method
WO1981002538A1 (fr) * 1980-03-03 1981-09-17 D Baumann Dispositif d'extraction de soupape d'injection de carburant
US4561159A (en) 1984-02-23 1985-12-31 Schuster David V Adapter for removing diesel engine fuel injectors
US4780942A (en) * 1987-02-12 1988-11-01 Bernat Helmut R Fuel injector puller
US5014409A (en) * 1990-07-10 1991-05-14 Pro-Tool, Inc. Fuel injector puller
DE19705990A1 (de) * 1997-02-17 1998-08-20 Bosch Gmbh Robert Montagevorrichtung zur Montage eines Brennstoffeinspritzventils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0031410A1 *

Also Published As

Publication number Publication date
JP2003517127A (ja) 2003-05-20
CZ294280B6 (cs) 2004-11-10
US20020108223A1 (en) 2002-08-15
US6618918B2 (en) 2003-09-16
US6397445B1 (en) 2002-06-04
DE19853586A1 (de) 2000-05-25
KR20010034226A (ko) 2001-04-25
WO2000031410A1 (fr) 2000-06-02
CZ20002648A3 (en) 2001-05-16
EP1064461B1 (fr) 2004-08-04
DE59910139D1 (de) 2004-09-09

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