EP1055063A1 - Dispositif pour le montage et le demontage d'une soupape d'injection de carburant - Google Patents

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

Info

Publication number
EP1055063A1
EP1055063A1 EP99973423A EP99973423A EP1055063A1 EP 1055063 A1 EP1055063 A1 EP 1055063A1 EP 99973423 A EP99973423 A EP 99973423A EP 99973423 A EP99973423 A EP 99973423A EP 1055063 A1 EP1055063 A1 EP 1055063A1
Authority
EP
European Patent Office
Prior art keywords
mounting device
dismantling
fuel injector
injection valve
fuel injection
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
EP99973423A
Other languages
German (de)
English (en)
Other versions
EP1055063B1 (fr
Inventor
Waldemar Hans
Mathias Linssen
Christof Vogel
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 EP1055063A1 publication Critical patent/EP1055063A1/fr
Application granted granted Critical
Publication of EP1055063B1 publication Critical patent/EP1055063B1/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
    • 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

Definitions

  • the invention relates to an assembly device for assembling and disassembling a fuel injection valve, in particular a high-pressure direct injection valve, into or out of a receiving bore of 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 invention relates to an assembly device according to the preamble of the main claim. It is already known from DE 197 05 990 AI an assembly device with a jacket body at least partially surrounding the fuel injector, an inwardly directed collar section at a first end of the jacket body and an outwardly directed collar section at a second end of the jacket body opposite the first end are trained. While the radially inwardly directed collar section can be inserted into a groove in the fuel injector, the outwardly directed collar section protrudes from the receiving opening of the fuel injector.
  • a suitable tool for example a tire iron, can engage on the collar portion protruding from the receiving bore of the cylinder head around the mounting device pry together with the fuel injector out of the mounting hole.
  • the assembly iron or other lever tools can therefore cause damage to the cylinder head, for example made of a light metal, when dismantling the fuel injector, which is disadvantageous. Furthermore, it is disadvantageous in the known mounting device that the mounting device does not transmit any hold-down force to the fuel injector during operation of the internal combustion engine, but rather that the fuel injector and the mounting device are held in the receiving bore only due to a frictional engagement, which is also unsatisfactory.
  • a disassembly device for a diesel injection valve 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 in the
  • Disassembly device is not provided.
  • the connection of the disassembly device to the fuel injector is relatively cumbersome.
  • the mounting device according to the invention with the characterizing features of the main claim has the advantage that the at least one disassembly screw engaging a thread of the collar section enables simple and damage-free disassembly of the assembly device together with the fuel injector inserted into the assembly device.
  • the disassembly is carried out in such a way that the assembly device with the fuel injection valve is continuously pulled out of the receiving bore by tightening the at least one disassembly screw or preferably a plurality of disassembly screws.
  • Threads distributed around the collar section for each one dismantling screw can ensure that the resulting dismantling force resulting from tightening the plurality of dismantling screws is axially aligned, so that an increased frictional engagement due to radial force component is avoided.
  • a symmetrical, continuous tensile force is achieved.
  • the disassembly can also be carried out by alternately tightening the several disassembly screws.
  • openings are provided on the collar section, preferably in the form of bores, through which mounting screws engaging in a thread of the cylinder head extend.
  • the threads and the openings in the collar section are dimensioned so that the mounting screws simultaneously as Disassembly screws can be used.
  • the threads in the cylinder head and the collar section of the mounting device must have the same diameter and the same pitch and the openings must be dimensioned such that the corresponding screw diameters fit through them.
  • the assembly screws are then first loosened and the assembly screws then serving as disassembly screws are inserted and tightened in the threads of the collar section, as a result of which the assembly device with the fuel injector is pulled out of the mounting hole in the cylinder head.
  • Special disassembly screws do not have to be provided.
  • At least three openings are preferably provided for the mounting screws, which have an angular distance of more than 90 °. This ensures that the hold-down force acts uniformly on the mounting device and thus on the fuel injector.
  • the engagement section of the mounting device acting on the fuel injection valve has a radially inward projection and an axial extension that extends axially beyond the radial projection.
  • the axial extension serves to transmit the hold-down force to the fuel injection valve, while the radial projection engages in a groove of the fuel injector in order to transmit the disassembly force to the fuel injector.
  • the functions of holding down and dismantling are separated on the engagement section of the assembly device which engages on the fuel injection valve. This has the advantage that the area of the dismantling groove of the fuel injector can be realized by plastic encapsulation, and only the area of the fuel injector to which the axial extension engages must be made of metal. This leads to a simple and inexpensive manufacture of the valve housing of the fuel injector.
  • the assembly device can be manufactured inexpensively by deep drawing from a metal sheet.
  • Fig. 1 shows a section through a cylinder head
  • FIG. 2 shows a slightly modified embodiment of FIG. 1 of the invention
  • FIG. 1 shows a section through a cylinder head 2 of an internal combustion engine and through an exemplary embodiment of an assembly device 1 according to the invention and a fuel injector 3, not shown in section, inserted into the assembly device 1 according to the invention.
  • the fuel injection valve 3 is used for the direct injection of fuel into a combustion chamber 4 of the internal combustion engine.
  • the cylinder head 2 has a receiving bore 5 for receiving the fuel injection valve 3, which, in the exemplary embodiment shown, is divided into a narrowed section 6 Inclusion of a spray section 7 of the fuel injection valve 3, an expanded section 8 for receiving a dismantling section 9, a fuel supply section 10 and a housing body 27 and the assembly device 1 according to the invention, and a conical section 11 connecting the expanded section 8 with the narrowed section 6.
  • the assembly device 1 has a jacket body 12 which at least partially surrounds the fuel injection valve 3 and on which a collar section 13 which is directed out of the receiving bore 5 and which extends radially outward from the jacket body 12 is formed. At the end opposite the collar section 13, an engagement section 14 is formed on the casing body 12, via which the mounting device 1 engages the fuel injection valve 3.
  • the engagement section 14 has a radially inwardly directed radial projection 15 and an axial extension 16 which extends axially beyond the radial projection 15.
  • the radial projection 15 engages in a dismantling groove 17 of the fuel injector 3 in order to transmit a dismantling force to the fuel injector 3.
  • the axial extension 16, engages on a hold-down surface 18 of the fuel injector 3 in order to transmit a hold-down force to the fuel injector 3.
  • At least one, but preferably a plurality of unthreaded openings 19 and at least one, but preferably a plurality of openings with a thread 20 are provided on the collar section 13 of the assembly device 1.
  • the openings 19 are designed as unthreaded bores, through which mounting screws 21 reach, which can be screwed into threaded bores 22 of the cylinder head 2.
  • the openings 19 can, for example, also be in the form of elongated holes, slots, recesses open to the outside or the like.
  • the threads 20 are preferably formed in threaded bores, the threads 20 being cut directly into the collar section 13. However, it is also conceivable to attach threaded bushings or nuts to the collar section 13 of the mounting device 1.
  • the fuel injector 3 When assembling the fuel injector 3, the fuel injector 3 is first inserted into the assembly device 1 such that the radial projection 15 engages in the dismantling groove 17 of the fuel injector 3. Then the assembly device 1 together with the fuel injection valve 3 is inserted into the receiving bore 5 of the cylinder head 2. Finally, the mounting screws 21 are passed through the openings 19 of the collar section 13 and screwed into the thread 22 of the cylinder head 2. By tightening the mounting screws 21, the screw heads 23 of the mounting screws 21 come to rest on the collar section 13 and exert a hold-down force F N illustrated by the arrow 24 on the mounting device 1, which force is transmitted via the axial extension 16 to the hold-down surface 18 of the fuel injection valve 3 . During the operation of the internal combustion engine, the fuel injection valve 3 is therefore held down in the receiving bore 5 against the combustion pressure prevailing in the combustion chamber 4.
  • the mounting screws 21 are first loosened and removed from the thread 22 of the cylinder head 2. Then dismantling screws 25, which are supported on the cylinder head 2, are inserted into the threads 20 of the collar section 13.
  • a disassembly force F illustrated by the arrow 26 is exerted on the assembly device 1, which is transmitted via the radial projection 15 to the disassembly groove 17 of the fuel injection valve 3.
  • the mounting device 1 together with the fuel injection valve 3 is removed from the receiving bore 5 of the Pulled out cylinder head 2 without the need for a tire iron or other lever tools.
  • both a radial projection 15 and an axial extension 16 are formed on the engagement portion 14 of the mounting device 1, the functions of holding down and disassembly are separated.
  • the housing body 27 of the fuel injector 3, on which the hold-down surface 18 is formed preferably consists of metal, in particular steel, in order to be able to transmit a high hold-down force to the fuel injector 3,
  • the dismantling section 9 of the fuel injector, on which the dismantling groove 17 is formed are manufactured as a plastic injection-molded part, since the dismantling force F D is significantly smaller than the hold-down force F N. This enables cost-effective production of the fuel injection valve 3.
  • FIG. 2 shows a top view of an embodiment of an assembly device 1 according to the invention that has been slightly modified compared to the embodiment shown in FIG. 1.
  • the radial projection 15, the collar section 13, the threads 20 formed on the collar section 13 and the openings 19 formed on the collar section 13 in the form of unthreaded bores 19 can be seen.
  • the modification compared to the exemplary embodiment shown in FIG. 1 consists in that two in Threaded bores formed threads 20 are formed on the collar section 13 diametrically opposite in the cutting plane III-III, while in the embodiment shown in Fig. 1 for better Illustration of the invention in the cutting plane III-III a thread 20 and a threadless opening 19 are arranged.
  • the radial projection 15 in the exemplary embodiment shown in FIG. 2 surrounds the fuel injector 3, not shown in FIG. 2, in a smaller angular range than the jacket body 12 or the collar section 13 formed on the jacket body 12. This facilitates the insertion of the fuel injection valve 3 into the assembly device 1.
  • Fig. 3 shows a section along the line III-III in Fig. 2.
  • the representation largely corresponds to the representation of the mounting device 1 in Fig. 1 with the difference that, as explained, in the cutting plane III-III two threads 20 instead of one Threads 20 and a threadless opening 19 are arranged.
  • the assembly device 1 according to the invention can be produced inexpensively as a deep-drawn sheet metal part.
  • the threads 22 on the cylinder head 2 and the threads 20 on the collar 13 of the mounting device 1 preferably have the same diameter and the same pitch, so that the mounting screws 21 can simultaneously be used as removal screws 25.
  • the assembly screws 21 are therefore first loosened and removed and then inserted into the thread 20 and tightened.
  • the radial projection 15 can also be realized by notches on the jacket body 12, which are bent so that they protrude radially inwards.

Landscapes

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

Abstract

L'invention concerne un dispositif (1) pour le montage et le démontage d'une soupape d'injection de carburant (3) placé dans un alésage de réception (5) d'une culasse (2) d'un moteur à combustion interne. Ce dispositif comporte un corps d'enveloppe (12) qui entoure, au moins partiellement, la soupape d'injection de carburant (3). Sur ce corps d'enveloppe (12) sont formées une section d'appui (14), par l'intermédiaire de laquelle peuvent être exercées, sur la soupape d'injection de carburant (3), aussi bien une force de maintien (F>N<), servant au maintien de la soupape d'injection de carburant (3) dans son alésage de réception (5), qu'une force de démontage (F>D<), servant au démontage de la soupape d'injection de carburant (3), ainsi qu'une section en collerette (13) faisant saillie à partir de l'alésage de réception (5). La section en collerette (13) présente au moins un filetage (20) dans lequel une vis de démontage (25) peut être vissée de façon que lorsqu'elle est serrée, elle repose contre la culasse (2) et transmet à la section en collerette (13) une force de démontage (F>D<) telle que le dispositif de montage (1) est retiré, avec la soupape d'injection de carburant (3) insérée dans celui-ci, de l'alésage de réception (5).
EP99973423A 1998-12-14 1999-09-30 Dispositif pour le montage et le demontage d'une soupape d'injection de carburant Expired - Lifetime EP1055063B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857485 1998-12-14
DE19857485A DE19857485A1 (de) 1998-12-14 1998-12-14 Montagevorrichtung zur Montage und Demontage eines Brennstoffeinspritzventils
PCT/DE1999/003143 WO2000036295A1 (fr) 1998-12-14 1999-09-30 Dispositif pour le montage et le demontage d'une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1055063A1 true EP1055063A1 (fr) 2000-11-29
EP1055063B1 EP1055063B1 (fr) 2004-12-01

Family

ID=7890943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99973423A Expired - Lifetime EP1055063B1 (fr) 1998-12-14 1999-09-30 Dispositif pour le montage et le demontage d'une soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6820315B1 (fr)
EP (1) EP1055063B1 (fr)
JP (1) JP2002532653A (fr)
KR (1) KR20010040887A (fr)
DE (2) DE19857485A1 (fr)
WO (1) WO2000036295A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114310270A (zh) * 2021-11-25 2022-04-12 国营芜湖机械厂 一种飞机射流管伺服阀衔铁组件的拆装方法及装置

Families Citing this family (17)

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Publication number Priority date Publication date Assignee Title
DE10109408A1 (de) * 2001-02-28 2002-09-05 Bosch Gmbh Robert Befestigungsvorrichtung
DE10140794A1 (de) * 2001-08-20 2003-07-10 Bosch Gmbh Robert Ausrichtelement
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
US20070000113A1 (en) * 2005-06-30 2007-01-04 Richard Desilets Fuel injector pulling tool
JP4584875B2 (ja) * 2006-07-07 2010-11-24 株式会社川崎造船 燃料噴射弁分解用治具
US7874542B2 (en) * 2006-08-09 2011-01-25 Fisher Controls International Llc Actuator levers, collets, and collet removers
US8490264B2 (en) * 2010-03-09 2013-07-23 International Engine Intellectual Property Company, Llc Disassembly station
DE202010009355U1 (de) 2010-06-22 2010-10-07 Werkzeug Pichler Gesellschaft M.B.H. & Co. Kg Demontagevorrichtung zum Demontieren eines Brennstoffinjektors
US8596247B2 (en) 2010-07-13 2013-12-03 Caterpillar Inc. Fuel delivery assembly
CN102303301B (zh) * 2011-08-11 2013-07-17 镇江中船设备有限公司 柴油机汽缸套的火焰圈拆卸装置
GB2493711B (en) * 2011-08-12 2018-04-25 Openhydro Ip Ltd Method and system for controlling hydroelectric turbines
CN103527375B (zh) * 2013-09-22 2016-03-09 安徽中鼎动力有限公司 一种两冲程发动机的喷油器压套装置
DE102015001614A1 (de) * 2015-02-07 2016-08-11 Neander Motors Ag Einrichtung zur Festsetzung zumindest einer Kraftstoffeinspritzdüse
DE102015114694B4 (de) * 2015-09-02 2020-08-13 Poul Chang Metal Industry Co., Ltd. Demontagegerät für Einspritzventile
CN112912179B (zh) 2018-10-26 2023-05-30 固瑞克明尼苏达有限公司 用于多部件式喷涂器的流体盒
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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DE19511703A1 (de) * 1995-03-30 1996-10-02 Bayerische Motoren Werke Ag Vorrichtung zur Befestigung einer Einspritzdüse insbesondere am Zylinderkopf einer Brennkraftmaschine
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US5727298A (en) * 1996-09-19 1998-03-17 The United States Of America As Represented By The Secretary Of The Navy Roller shaft extractor
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114310270A (zh) * 2021-11-25 2022-04-12 国营芜湖机械厂 一种飞机射流管伺服阀衔铁组件的拆装方法及装置

Also Published As

Publication number Publication date
JP2002532653A (ja) 2002-10-02
EP1055063B1 (fr) 2004-12-01
US6820315B1 (en) 2004-11-23
DE19857485A1 (de) 2000-06-15
DE59911193D1 (de) 2005-01-05
KR20010040887A (ko) 2001-05-15
WO2000036295A1 (fr) 2000-06-22

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