EP1055064A1 - 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
EP1055064A1
EP1055064A1 EP99973424A EP99973424A EP1055064A1 EP 1055064 A1 EP1055064 A1 EP 1055064A1 EP 99973424 A EP99973424 A EP 99973424A EP 99973424 A EP99973424 A EP 99973424A EP 1055064 A1 EP1055064 A1 EP 1055064A1
Authority
EP
European Patent Office
Prior art keywords
injection valve
mounting device
fuel injection
receiving bore
fuel injector
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
EP99973424A
Other languages
German (de)
English (en)
Other versions
EP1055064B1 (fr
Inventor
Waldemar Hans
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 EP1055064A1 publication Critical patent/EP1055064A1/fr
Application granted granted Critical
Publication of EP1055064B1 publication Critical patent/EP1055064B1/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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/6109—Tool for applying or removing valve or valve member
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/6116—With holding means functioning only during transportation assembly or disassembly

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 from DE 197 05
  • Fuel injector at least partially surrounding
  • Main body known, being at a first end of the
  • Main body an inwardly facing collar portion and at a second end opposite the first end of the
  • Main body are formed an outwardly facing collar portion. While the radially inward
  • Collar section can be inserted into a groove of the fuel injector, the outwardly directed collar section protrudes from the receiving opening of the
  • Collar section can engage a suitable tool, for example a tire iron, around the mounting device with the fuel injector out of the mounting hole.
  • This known assembly device is not suitable for transmitting a hold-down force to the fuel injection valve which can withstand the combustion pressure prevailing in the combustion chamber of the internal combustion engine.
  • the fuel injector is therefore held down by a separate hold-down device, or the fuel injector is only locked in the receiving bore by a frictional engagement.
  • the inwardly directed collar section can, however, transmit a pressing force to the fuel injection valve for pressing the fuel injection valve into the receiving bore.
  • the inwardly projecting collar section engages in a corresponding groove in the fuel injector. It is disadvantageous, however, that this pressing force does not act centrally and symmetrically to the central axis of the fuel injector, but on one side. Furthermore, the handling of the assembly device when inserting the fuel injector can be improved.
  • a disassembly device for a diesel fuel injector 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 transmission of a hold-down force to the fuel injector via the dismantling 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 a central and symmetrical hold-down force is transmitted to the fuel injector by the two engagement elements, so that an inclination or tilting of the fuel injector is avoided.
  • the latching connection between the assembly device and the fuel injector significantly improves the manageability when the fuel injector is inserted into the assembly device.
  • the fuel injection valve is not inserted laterally but axially into the assembly device, which is easier to control, particularly in the case of partially or fully automatic production.
  • both the hold-down force and the dismantling force are introduced to a high degree centrally and symmetrically to the central axis of the fuel injector.
  • the locking lugs formed on the fuel injection valve preferably each have a bevel facing away from the holding-down surfaces of the mounting device.
  • the bevel facilitates the latching of the latching lugs into the latching recesses provided on the engagement elements.
  • the mounting device is preferably guided in the mounting hole with only a slight play in order to ensure an exact axial alignment of the mounting device with respect to the mounting hole.
  • a recess for the connector of the fuel injector is advantageously provided between the engagement elements, so that the connector of a fuel injector mounted on the mounting device is arranged between the engagement elements.
  • the assembly device can be produced inexpensively by deep drawing from a metal sheet.
  • FIG. 1 shows the spray-side end of an exemplary embodiment of the assembly device according to the invention, a fuel injection valve inserted into the assembly device according to the invention and the cylinder head of an internal combustion engine in a partially sectioned, excerpted illustration;
  • Fig. 2 is a plan view of the spray end of the embodiment shown in Fig. 1 of the mounting device according to the invention.
  • Fig. 3 is a side view of the embodiment of the mounting device according to the invention shown in Figs. 1 and 2.
  • Assembly device 1 shown.
  • Mounting device 1 a fuel injector 2 is used.
  • the mounting device 1 and the fuel injection valve 2 are inserted into a receiving bore 3 of a cylinder head 4 of an internal combustion engine.
  • the fuel injection valve 2 is a high-pressure direct injection valve for the direct injection of fuel into the combustion chamber of the internal combustion engine.
  • the receiving bore 3 of the cylinder head 4 is subdivided into an enlarged section 5, a narrowed section 6 and a conical section 7 connecting the enlarged section 5 with the narrowed section 6.
  • a sprayed section 8 of the fuel injection valve 2 is located in the narrowed section 6 of the receiving bore 5 .
  • the fuel injector 2 must be held down in the receiving bore 3 of the cylinder head 4 against the combustion pressure prevailing in the combustion chamber.
  • the function of holding down the fuel injector 2 in the receiving bore 3 of the cylinder head 4 is one of the two functions of the mounting device 1 according to the invention.
  • the mounting device 1 has two engagement elements 9 and 10 on its spray-side end shown in FIG. 1, which are arranged diametrically opposite one another.
  • the mounting device 1 can also have more than two engagement elements, for example three or four engagement elements, which are preferably arranged uniformly distributed over the circumference.
  • the two engagement elements 9 and 10 each have an end hold-down surface 11 and 12, each of which engages an annular counter surface of a housing body 14 of the fuel injector 2 in order to hold down the fuel injector 2 against the combustion pressure prevailing in the combustion chamber.
  • the fuel injection valve 2 is pressed against the conical section 6 of the receiving bore 3 at a conical section 15 by the hold-down force applied by the assembly device 1. Due to the sectionally conical design of the receiving bore 3 and the fuel injection valve 2 an exact axial alignment of the fuel injection valve 2 with respect to the central axis 16 of the receiving bore 3 is ensured.
  • the two engagement elements 9 and 10 are connected to a main body, not shown in FIG. 1, which preferably surrounds the fuel injection valve 2 in an annular or sleeve-like manner.
  • a fastening section, also not shown, of the main body protrudes from the receiving bore 3 of the cylinder head 4 and can be fastened to the cylinder head 4.
  • the area of the fastening section can be adapted to the specific geometric configuration of the cylinder head 4.
  • the hold-down force can be exerted on the mounting device 1, for example, by mounting screws provided on the fastening section.
  • the fastening device 1 preferably has only a very slight play with respect to the receiving bore 3 of the cylinder head 4, so that the mounting device 1 is guided exactly axially in the receiving bore 3 and the fuel injector 2 is therefore precisely aligned axially even under difficult conditions, for example when a shaking movement occurs is.
  • the two engagement elements 9 and 10 furthermore have two latching recesses 17 and 18 which are closed on all sides in the exemplary embodiment.
  • the locking recesses 17 and 18 have a rectangular cross section in the exemplary embodiment.
  • a locking lug 19 or 20 which is formed radially on the fuel injection valve 2 can be inserted by pushing the fuel injection valve 2 into the mounting device 1 in the axial direction.
  • the locking lugs 19 and 20 preferably have bevels 21 and 22 facing away from the hold-down surfaces 11 and 12, which elastically spring open the engagement elements 9 and 10 radially outwards when the fuel injector 2 is inserted.
  • the attack elements 9 and 10 radially back so that the fuel injector 2 is locked on the locking elements 19 and 20 on the attack elements 9 and 10.
  • the fuel injector 2 is attached to the mounting device 1 before the fuel injector 2 and the mounting device 1 are inserted into the mounting hole 3 of the cylinder head 4. After the mounting device 1 is inserted into the mounting hole 3, the mounting device 1 is due to the slight play secured against the ahmbohrung 3 against radial spring apart of the engagement elements 9 and 10 and loosening of the locking lugs 19 and 20.
  • the locking lugs 19 and 20 each have an engagement surface 23 or 24, on which a counter surface 25 or 26 formed on the engagement element 9 or 10 . attacks during disassembly. When the assembly device 1 is pulled out of the receiving bore 3, the fuel injection valve 2 is therefore carried along axially and pulled out of the receiving bore 3.
  • the attachment of the fuel injector 1 to the mounting device 1 is made considerably easier by the snap-in connections created by the snap-in recesses 17 and 18 and the snap-in lugs 19 and 20, as a result of which the handling is significantly improved.
  • the fuel injector 2 is not supplied to the mounting device 1 laterally, but in the axial direction, which can be of considerable advantage in the case of automatic production.
  • Fig. 2 shows the embodiment of the assembly device 1 shown in Fig. 1 in a plan view of the spray end, ie in Fig. 1 from below.
  • the two engagement elements 9 and 10 can be seen, the hold-down surfaces 11 and 12 in FIG. 2 being provided with cross hatching for better illustration.
  • the locking recesses 17 and 18 can be seen in the two engagement elements 9 and 10.
  • Between the two diametrically opposite engagement elements 9 and 10 each have a recess 30 and 31, at least one of the two recesses 30 and 31 having such a width that a connector of the fuel injector 2 can be received by this recess 30 and 31, and Connector is arranged after fastening the fuel injector 2 to the fastening device 1 between the two engagement elements 9 and 10.
  • the two engagement elements 9 and 10 are elastically connected to a main body 32, which extends from the two engagement elements 9 and 10 against the spray direction, or are integrally formed therewith.
  • the main body 32 preferably surrounds the fuel injection valve 2 in an annular manner on all sides.
  • FIG. 3 shows a side view of the exemplary embodiment of the mounting device 1 shown in FIGS. 1 and 2.
  • One of the two engagement elements 9 and the rectangular recess 17 in the exemplary embodiment can be seen.

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) utilisé pour le montage et le démontage d'une soupape d'injection de carburant (2) placée dans un alésage de réception (3) d'une culasse (4) d'un moteur à combustion interne. Ce dispositif comporte au moins deux éléments d'appui (9, 10) s'appuyant sur la soupape d'injection de carburant (2). Sur les éléments d'appui (9, 10) faisant ressort sont formés, respectivement, une surface de maintien (11, 12), servant au transfert d'une force de maintien à la soupape d'injection de carburant (2), et un évidement d'encliquetage (17, 18) dans lequel s'insère une saillie d'encliquetage (19, 20) de la soupape d'injection de carburant (2) pour le transfert d'une force de démontage à la soupape d'injection de carburant (2).
EP99973424A 1998-12-14 1999-09-30 Dispositif pour le montage et le demontage d'une soupape d'injection de carburant Expired - Lifetime EP1055064B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857474A DE19857474A1 (de) 1998-12-14 1998-12-14 Montagevorrichtung zur Montage und Demontage eines Brennstoffeinspritzventils
DE19857474 1998-12-14
PCT/DE1999/003144 WO2000036296A1 (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
EP1055064A1 true EP1055064A1 (fr) 2000-11-29
EP1055064B1 EP1055064B1 (fr) 2004-03-24

Family

ID=7890933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99973424A Expired - Lifetime EP1055064B1 (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) US6553969B1 (fr)
EP (1) EP1055064B1 (fr)
JP (1) JP2002532654A (fr)
KR (1) KR20010040886A (fr)
DE (2) DE19857474A1 (fr)
WO (1) WO2000036296A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10140797A1 (de) * 2001-08-20 2003-07-31 Bosch Gmbh Robert Ausgleichselement für ein Brennstoffeinspritzventil
DE102005006641A1 (de) * 2005-02-14 2006-08-24 Siemens Ag Einspritzventil zum Einspritzen von Kraftstoff und Zylinderkopf
US20090235898A1 (en) * 2008-03-19 2009-09-24 Short Jason C Fuel injector isolator
DE102008002654A1 (de) * 2008-06-26 2009-12-31 Robert Bosch Gmbh Entkoppelungselement für eine Brennstoffeinspritzvorrichtung
US8490264B2 (en) * 2010-03-09 2013-07-23 International Engine Intellectual Property Company, Llc Disassembly station
KR101232791B1 (ko) 2011-07-29 2013-02-13 말레동현필터시스템 주식회사 인젝터 클램프 지지장치
JP6081095B2 (ja) * 2012-07-17 2017-02-15 Nok株式会社 シール構造

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589388A (en) * 1970-03-30 1971-06-29 Bryan L Haneline Jr Injector nozzle retriever and insertion apparatus
US3924583A (en) * 1974-06-21 1975-12-09 Caterpillar Tractor Co Mounting apparatus
US4151855A (en) * 1977-06-02 1979-05-01 Acf Industries, Incorporated Ball valve assembly tools and method of using same
IN159427B (fr) * 1982-11-27 1987-05-16 Perkins Engines Group
US4561159A (en) * 1984-02-23 1985-12-31 Schuster David V Adapter for removing diesel engine fuel injectors
US4638541A (en) * 1984-06-22 1987-01-27 Schindler Jr Edward F Tools for repairing a diesel engine cylinder head
US5070845A (en) * 1989-05-22 1991-12-10 General Motors Corporation Fuel injection nozzle
US5121731A (en) * 1991-06-20 1992-06-16 Siemens Automotive L.P. Means for mounting a fuel injector on a fuel rail
US5392749A (en) * 1991-10-11 1995-02-28 Caterpillar Inc. Hydraulically-actuated fuel injector system having separate internal actuating fluid and fuel passages
DE19621221A1 (de) * 1996-05-25 1997-11-27 Bosch Gmbh Robert Aggregat und Schnappvorrichtung für ein Aggregat
JP3765336B2 (ja) * 1996-10-15 2006-04-12 株式会社デンソー 燃料供給装置およびその製造方法
DE19705990A1 (de) 1997-02-17 1998-08-20 Bosch Gmbh Robert Montagevorrichtung zur Montage eines Brennstoffeinspritzventils
US6009856A (en) * 1998-05-27 2000-01-04 Caterpillar Inc. Fuel injector isolation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0036296A1 *

Also Published As

Publication number Publication date
JP2002532654A (ja) 2002-10-02
EP1055064B1 (fr) 2004-03-24
DE59908954D1 (de) 2004-04-29
US6553969B1 (en) 2003-04-29
KR20010040886A (ko) 2001-05-15
WO2000036296A1 (fr) 2000-06-22
DE19857474A1 (de) 2000-06-15

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