EP1697632B1 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

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Publication number
EP1697632B1
EP1697632B1 EP20040798136 EP04798136A EP1697632B1 EP 1697632 B1 EP1697632 B1 EP 1697632B1 EP 20040798136 EP20040798136 EP 20040798136 EP 04798136 A EP04798136 A EP 04798136A EP 1697632 B1 EP1697632 B1 EP 1697632B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
seal
valve
receiving opening
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.)
Active
Application number
EP20040798136
Other languages
German (de)
French (fr)
Other versions
EP1697632A1 (en
Inventor
Martin BÜHNER
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
Priority to DE2003158913 priority Critical patent/DE10358913A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PCT/EP2004/052751 priority patent/WO2005059352A1/en
Publication of EP1697632A1 publication Critical patent/EP1697632A1/en
Application granted granted Critical
Publication of EP1697632B1 publication Critical patent/EP1697632B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14Arrangements of injectors with respect to engines; Mounting of injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/858Mounting of fuel injection apparatus sealing arrangements between injector and engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166Selection of particular materials

Description

    State of the art
  • The invention relates to a fuel injection valve according to the preamble of the main claim.
  • For example, is from the DE 101 09 407 A1 a fuel injection valve with a spray-side arranged seal known. The existing example of a copper-tin alloy or stainless steel seal is arranged in a nozzle body radially encircling annular groove and axially fixed in this manner, wherein it seals the fuel injection valve against a cylinder head.
  • A disadvantage of the fuel injection valve known from the above publication is that the seal can not be arranged anywhere near the transition to the combustion chamber by the complete positive embedding of the seal. In the combustion chamber gases or fuel can penetrate into the located between the discharge end of the fuel injection valve and the cylinder head gap and lead to the seal to leaks, for example, by lifting the seal from the annular groove or unburned Fuel settles in the gap, which can negatively affect the exhaust gas.
  • In the US Pat. No. 6,186,123 B1 a fuel injector is described with a nozzle body, which is used for the direct injection of fuel into the combustion chamber of an internal combustion engine in a receiving bore of a cylinder head of the internal combustion engine. The fuel injection valve has a metal ring arranged on the nozzle body, which deforms upon heating and, after the insertion of the fuel injection valve into the receiving bore, causes a radial compression of the fuel injection valve in the receiving bore only when heated.
  • Advantages of the invention
  • The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that the seal can be led to the transition to the combustion chamber and so the sealing effect is improved.
  • The measures listed in the dependent claims advantageous developments of the fuel injection valve specified in the main claim are possible.
  • Advantageously, the seal is joined by welding, laser welding, caulking or pressing in the discharge-side region of the fuel injection valve. The joint can thus be produced cost-effectively and reliably in accordance with the requirements.
  • In a further development of the fuel injection valve according to the invention, the seal consists of a metal, in particular of steel or V2A steel, a copper alloy and / or a brass alloy. Depending on the requirements of temperature resistance and temperature behavior, the seal can be designed correspondingly advantageous and cost-effective.
  • It is also advantageous if the production of the seal by forming, in particular deep drawing and / or flanging takes place.
  • The seal can be produced very cost-effectively and very accurately in large numbers.
  • Advantageously, the first portion is at least partially permanently elastic and is thereby biased against the valve receiving opening. The seal can, for example, after an expansion of the
  • Fuel injector can be reused during installation of the same fuel injection valve and can remain on the fuel injection valve.
  • By the first portion protrudes outwardly from the adjacent parts of the seal and / or the first portion is wave-shaped and thereby abuts in several places on the valve receiving opening, the sealing effect of the seal can be improved.
  • By a U-shaped design of the seal, the seal can also be made easier.
  • It is also advantageous to arrange the bottom of the U-shaped section at the level of a step, whereby the dead space located between the nozzle body and the valve receiving opening is minimized, or to be arranged at the height of the sprayer distal end of the diameter feed, whereby the first section by the gas pressure in the combustion chamber is pressed to the valve receiving opening and the sealing effect is thereby improved.
  • In a further development of the first portion is at least partially sealingly on a tapered, the diameter of the valve receiving opening narrowing first bearing surface. As a result, the sealing effect of the seal can be improved, and this can also be achieved in that the seal is biased indirectly via other parts of the fuel injection valve against at least the first bearing surface.
  • drawing
  • Embodiments of the invention are shown in simplified form in the drawing and explained in more detail in the following description. Show it:
  • Fig. 1
    a schematic section through an embodiment of a generic fuel injection valve,
    Fig. 2
    a schematic section through a first embodiment of a fuel injection valve according to the invention in the discharge side area,
    Fig. 3
    a schematic section through a second embodiment of a fuel injection valve according to the invention in the discharge side region,
    Fig. 4
    a schematic section through a third embodiment of a fuel injection valve according to the invention in the discharge side area,
    Fig. 5
    a schematic section through a fourth embodiment of a fuel injection valve according to the invention in the discharge side region,
    Fig. 6A
    a schematic section through two embodiments of a non-inventive fuel injection valve in the discharge side area,
    Figs. 6B and 6C
    schematic representations of the seal in the uninstalled state,
    Fig. 7
    a schematic section through a fifth embodiment of a fuel injection valve according to the invention in the discharge side region,
    Fig. 8
    a schematic section through an embodiment of a non-inventive fuel injection valve in the discharge side region and
    Fig. 9
    a schematic section through an embodiment of a non-inventive fuel injection valve in the discharge side area.
    Description of the embodiments
  • Hereinafter, embodiments of the invention will be described by way of example. Matching components are provided with matching reference numerals.
  • Before using the FIGS. 2 3, 4, 5 and 7 preferred embodiments of the invention will be described in more detail, is intended for better understanding of the invention initially with reference to Fig. 1 a generic fuel injection valve will be briefly explained with respect to its essential components.
  • An in Fig. 1 Illustrated example of a fuel injection valve 1 is embodied in the form of a fuel injection valve 1 for fuel injection systems of mixture-compression, spark-ignition internal combustion engines. The fuel injection valve 1 is suitable in particular for the direct injection of fuel into a combustion chamber, not shown, of an internal combustion engine.
  • The fuel injection valve 1 consists of a nozzle body 2, in which a valve needle 3 is arranged. The valve needle 3 has a discharge side Valve closing body 4, which cooperates with a arranged on a valve seat body 5 valve seat surface 6 to a sealing seat. The fuel injection valve 1 in the example is an inwardly opening fuel injection valve 1 which has an injection opening 7. The nozzle body 2 is sealed by a seal 8 against an outer pole 9 of a magnetic coil 10. The magnetic coil 10 is encapsulated in a coil housing 11 and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10. The inner pole 13 and the outer pole 9 are separated by a distance 26 and connected to each other by a non-ferromagnetic connecting member 29. The magnetic coil 10 is energized via an electrical line 19 from a via an electrical plug contact 17 can be supplied electric current. The plug contact 17 is surrounded by a plastic casing 18, which may be molded on the inner pole 13.
  • The valve needle 3 is guided in a valve needle guide 14, which is designed disk-shaped. On the other side of the shim 15 is the armature 20. This is connected via a first flange 21 with the valve needle 3 in connection, which is connected by a weld 22 with the first flange 21. On the first flange 21, a helical return spring 23 is supported, which is brought in the present design of the fuel injection valve 1 by a sleeve 24 to bias.
  • In the valve needle guide 14, in the armature 20 and on a guide element 36 extend fuel channels 30, 31 and 32. The fuel is supplied via a central fuel supply 16 and filtered by a filter element 25. The fuel injection valve 1 is opposed by a rubber ring 28 against a fuel distributor line (not shown) and by a seal 37 one in Fig. 1 Cylinder head 43 not shown sealed.
  • On the discharge side of the armature 20, an annular damping element 33, which consists of an elastomer material, arranged. It rests on a second flange 34, which is materially connected to the valve needle 3 via a weld seam 35.
  • In the idle state of the fuel injection valve 1, the armature 20 is acted upon by the return spring 23 against its stroke direction so that the valve closing body 4 is held on the valve seat surface 6 in sealing engagement. Upon energization of the solenoid coil 10, this builds up a magnetic field, which moves the armature 20 against the spring force of the return spring 23 in the stroke direction, wherein the stroke is determined by a located in the rest position between the inner pole 12 and the armature 20 working gap 27. The armature 20 takes the first flange 21, which is welded to the valve needle 3, also in the stroke direction with. The standing with the valve needle 3 in connection valve closing body 4 lifts from the valve seat surface 6, and the pressurized supplied fuel is sprayed through the injection opening 7 in the combustion chamber, not shown.
  • If the coil current is turned off, the armature 20 drops after sufficient degradation of the magnetic field by the pressure of the return spring 23 from the inner pole 13, whereby the valve connected to the needle 3 in communication first flange 21 moves against the stroke direction. The valve needle 3 is thereby moved in the same direction, whereby the valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • In the exemplary embodiment shown, the nozzle body 2, the valve needle 3 and the valve seat body 5 are formed coaxially with a central axis 40.
  • The FIGS. 2 3, 4, 5 and 7 show schematic representations in the discharge-side region of embodiments of the fuel injection valve 1 according to the invention. The fuel injection valve 1 is arranged in a valve receiving opening 48 of a cylinder head 43.
  • The fuel injection valve 1 has, in the discharge-side region, just before the discharge-side end, a step 47 formed in the nozzle body 2 and reducing the diameter of the nozzle body 2. The seal 37 ends in Abspritzrichtung at the level of a transition 39, at which the valve receiving opening 48 merges into the combustion chamber. The step 47 is arranged at the level of the transition 39.
  • The seal 37 is substantially sleeve-shaped, produced by forming, in particular deep drawing and / or flanging, and has at least one outwardly, opposite to the immediately adjacent parts of the seal 37, protruding first portion 38. The first section 38 completely surrounds the seal 37 and is, for example, permanently elastic, with the entire seal 37 being able to be made permanently elastic. The first portion 38 is biased against the wall of the valve receiving opening 48 in the installed in the valve receiving opening 48 and seals the fuel injection valve 1 against the cylinder head 43 from.
  • The first portion 38 of the seal 37 of in Fig. 2 schematically illustrated first embodiment, is arranged approximately in the middle of the height of the seal 37. The first section 38 is spherical in cross-sectional profile, or part-circular, arched outward.
  • The discharge-side end of the seal 37 is bevelled on the outside.
  • At an axial portion 46 of the seal 37, the seal 37 is joined in the region of the discharge-side end of the fuel injection valve 1. In this Embodiment, the portion 46 is materially joined by an example, completely circumferential weld 44 with the nozzle body 2. The portion 46 is arranged in the discharge spray side of the seal 37 in this embodiment. The weld 44 connects the seal 37 with the nozzle body 2 hermetically sealed. The weld 44 may also consist of at least one spot weld.
  • In the installed state of the permanently elastic first portion 38 is biased against the running parallel to the central axis 40 at this point wall of the valve receiving opening 48.
  • The spray-off end of the seal 37 extends at right angles to the central axis 40 to the outside and lies on a formed in the valve receiving opening 48 shoulder 49, which reduces the diameter of the valve receiving opening 48 in Abspritzrichtung on. Between the first section 38 and the ejection-side end, the seal 37 partially lies against the nozzle body 2 in the axial direction.
  • The second embodiment similar to the first embodiment, which in Fig. 3 is shown, has a running to the step 47 with the same diameter diameter retraction 45. The height of the seal 37 is slightly smaller than that of the diameter catch 45. The diameter of the seal 37 at the spray-away end and the discharge-side end are the same. The first portion 38 is located in the middle of the height of the seal 37.
  • The second embodiment similar third embodiment, which in Fig. 4 is shown, in the discharge-side region no diameter feed 45. The seal 37 is located on the injection side and Abspritzfern the first portion 38 close to the discharge side cylindrical nozzle body 2.
  • The first section 38 rests on an obliquely tapering, first bearing surface 41 narrowing the diameter of the valve receiving opening 48. The fuel injection valve 1 is biased in Abspritzrichtung, whereby the seal 37 is biased in the radial and axial direction against the valve receiving opening 48 in cooperation with the permanently elastic first portion 38.
  • Fig. 5 shows a schematic section through a fourth embodiment of a fuel injection valve 1 according to the invention in the discharge side region. The part-circularly curved outward first portion 38 is disposed in the discharge side of the section 46 in this embodiment. The in the cross-sectional profile part-circular curved outward first portion 38 is located with its inside on a corresponding, also partially circular outwardly curved support portion 50 of the nozzle body 2. The support portion 50 and the first portion 38 end discharge side at the level of the step 47 and the transition 39th
  • Fig. 6A shows a schematic section through two embodiments of a non-inventive fuel injection valve 1 in the discharge side region.
  • The portion 46 on which the seal 37 is joined in a materially joined to the nozzle body 2 in the right embodiment, is located just before the abspritzfernen, applied to the nozzle body 2 end of the seal 37.
  • At the level of the step 47, the seal 37 extends at right angles radially outward and shortly thereafter passes parallel to the injection direction into the first section 38, which ends just before the height of the section 46. The seal 37 accordingly has in the discharge side Area in the cross-sectional profile on a U-shape, wherein the bottom of the U-shape is at a level with the level 47.
  • Fig. 6C shows the shape of the discharge-side portion of the seal 37 in the uninstalled state. The first section 38 is straight, starting from the bottom of the U-shape elastic, light, starting from the installation position in Fig. 6A for example, 30 °, tilted outwards.
  • In the left embodiment, the seal 37 is formed in cross-section in the installed position as in the right embodiment. However, it is rotated in the cross section by 180 ° degrees. The bottom of the U-shape lies directly on the edge formed by the diameter of 45. The seal 37 is joined in the spray-side section 46 through the weld 44.
  • Fig. 6B shows the shape of the discharge-side portion of the seal 37 in the uninstalled state. The first section 38 extends part-circular outwards, wherein it is elastic.
  • This in Fig. 7 schematically illustrated fifth embodiment of the fuel injection valve 1 according to the invention is similar to the first embodiment of Fig. 2 built up. Abspritzfern the seal 37 but ends on the nozzle body 2, the first portion 38 has in the cross-sectional profile on a waveform and the discharge side of the first portion 38 arranged portion 46 is positively connected by a connecting portion 51 with the nozzle body 2. The bead-shaped connecting portion 51 of the section 46 narrows the diameter of the portion 46 and engages in a correspondingly shaped recess 52 of the nozzle body 2 a. The compound can be made detachable or insoluble.
  • Fig. 8 shows a schematic section through an embodiment of a non-inventive Fuel injection valve 1 in the discharge side area. The first portion 38 extends part-circular outwards and extends the diameter of the seal 37 against the Abspritzrichtung to a constant distance to the spray-off end of the seal 37 diameter. The spray-off end of the seal 37 is bevelled on the outside.
  • Fig. 9 shows a schematic section through an embodiment of a non-inventive fuel injection valve 1 in the discharge side region. Both the first section 38 having a larger diameter than the partial section 46, as well as the partial section 46, sealingly rest on the wall of the valve receiving opening 48. The abspritzseitig of the first portion 38 arranged portion 46 is located on a diameter of the discharge-side end of the valve receiving opening 48 reducing projection 53 sealingly.

Claims (14)

  1. Seal arrangement and fuel injection valve (1) having an actuator, having a valve closing body (4) which can be actuated by the actuator and which interacts with a valve seat surface (6) to form a sealing seat, having an ejection opening (7) and having a seal (37), which radially surrounds the region of the ejection-side end of the fuel injection valve (1), for sealing off the fuel injection valve (1) with respect to a valve receiving opening of a cylinder head,
    with the seal (37) being joined in a cohesive, positively locking and/or non-positively locking fashion in the region of the ejection-side end of the fuel injection valve (1) by means of at least one axial partial portion (46) which extends only over a part of the axial length of the seal (37),
    with the seal (37) being of sleeve-shaped design in at least one part and having a permanently elastic first portion (38) which is spherical in cross-sectional profile, with the seal (37) ending, in the ejection direction, at the level of a transition (39) at the ejection-side end of the fuel injection valve (1),
    characterized
    in that, via the transition (39), the valve receiving opening (48) merges into the combustion chamber.
  2. Fuel injection valve according to Claim 1,
    characterized
    in that the seal (37) is joined by means of welding or laser welding and/or by caulking or pressing.
  3. Fuel injection valve according to Claim 1 or 2,
    characterized
    in that the seal (37) is composed of metal, in particular of formable steel, V2A steel, a copper alloy and/or a brass alloy.
  4. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the seal (37) is produced at least partially by forming, in particular by deep drawing or flanging.
  5. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the first portion (38) is preloaded with a preload against the wall of the valve receiving opening (48) and is at least partially permanently elastic, with at least a part of the preload being produced in this way.
  6. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the first portion (38) at least partially projects outwards in relation to the adjoining parts of the seal (37).
  7. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the first portion (37) is undulating in cross-sectional profile and thereby bears sealingly against the valve receiving opening (48) at a plurality of points.
  8. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the first portion (37) is in the shape of a part of a circle in cross-sectional profile and/or widens the diameter of the seal (37) in the outward direction in the shape of a part of a circle.
  9. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the seal (37) is at least partially U-shaped in cross-sectional profile, the outer limb is formed by the first portion (38) and the inner limb is formed at least partially by the partial portion (46).
  10. Fuel injection valve according to Claim 9,
    characterized
    in that the base of the U-shaped portion is arranged at the level of a step (47) or at the level of the ejection-remote end of a diameter constriction (45).
  11. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the seal (37) extends, between the ejection-side region of the fuel injection valve (1) and the valve receiving opening (48), axially as far as the transition (39).
  12. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the first portion (38) bears sealingly at least partially against an obliquely tapering first contact surface (41) which narrows the diameter of the valve
    receiving opening (48).
  13. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the seal (37) is at least partially coated.
  14. Fuel injection valve according to one of the preceding claims,
    characterized
    in that the seal (37) is bevelled at the outside on at least one of its ends.
EP20040798136 2003-12-16 2004-11-02 Fuel injection valve Active EP1697632B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2003158913 DE10358913A1 (en) 2003-12-16 2003-12-16 Fuel injector
PCT/EP2004/052751 WO2005059352A1 (en) 2003-12-16 2004-11-02 Fuel injection valve

Publications (2)

Publication Number Publication Date
EP1697632A1 EP1697632A1 (en) 2006-09-06
EP1697632B1 true EP1697632B1 (en) 2010-06-16

Family

ID=34683384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040798136 Active EP1697632B1 (en) 2003-12-16 2004-11-02 Fuel injection valve

Country Status (5)

Country Link
US (1) US7377264B2 (en)
EP (1) EP1697632B1 (en)
JP (1) JP4404908B2 (en)
DE (2) DE10358913A1 (en)
WO (1) WO2005059352A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006641A1 (en) * 2005-02-14 2006-08-24 Siemens Ag Injection valve for injecting fuel and cylinder head
DE102006009094A1 (en) * 2006-02-28 2007-08-30 Bayerische Motoren Werke Ag Damper for use between cylinder head and injector in region of injector foot, has sub-functional section e.g. inner ring and outer ring, for fixing injector with respect to cylinder head, where damper is formed as multipart structure
DE102006061733A1 (en) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Retaining device for retaining of reducing agent-dosing valve, has internal space for retaining reducing agent-dosing valve, and sound damping device, which absorbs sound waves that come out from internal space
DE102007001549A1 (en) * 2007-01-10 2008-07-17 Robert Bosch Gmbh Dehnhülsenbefestigung
US20090235898A1 (en) * 2008-03-19 2009-09-24 Short Jason C Fuel injector isolator
US7942132B2 (en) * 2008-07-17 2011-05-17 Robert Bosch Gmbh In-line noise filtering device for fuel system
US8091362B2 (en) * 2008-08-20 2012-01-10 Woodward, Inc. Fuel injector sans support/stem
US8069842B2 (en) * 2009-07-02 2011-12-06 Robert Bosch Gmbh Injector mounting assembly
US20110265767A1 (en) * 2010-05-03 2011-11-03 Delphi Technologies, Inc. Isolater for fuel injector
JP5831510B2 (en) * 2012-11-20 2015-12-09 株式会社デンソー Fuel injection valve and fuel injection valve mounting method
US9410520B2 (en) * 2013-08-08 2016-08-09 Cummins Inc. Internal combustion engine including an injector combustion seal positioned between a fuel injector and an engine body
US10036355B2 (en) 2013-08-08 2018-07-31 Cummins Inc. Heat transferring fuel injector combustion seal with load bearing capability
DE102015213221A1 (en) * 2015-07-15 2017-01-19 Robert Bosch Gmbh Valve for metering a fluid
US10267524B2 (en) 2015-09-16 2019-04-23 Woodward, Inc. Prefilming fuel/air mixer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2659115B1 (en) * 1990-03-02 1992-05-15 Procal Seal for injector of internal combustion engine.
DE19808068A1 (en) * 1998-02-26 1999-09-02 Bosch Gmbh Robert Fuel injector
JP3802702B2 (en) * 1999-02-26 2006-07-26 株式会社ケーヒン Mounting structure of seal member in electromagnetic fuel injection valve
DE19941930A1 (en) * 1999-09-03 2001-03-15 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19962968A1 (en) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Compensating element for a fuel injection valve of an internal combustion engine comprises a compensating sleeve which is provided with a flexible section between its connector and support sections
DE10108194A1 (en) * 2001-02-21 2002-08-29 Bosch Gmbh Robert Sealing device for a fuel injector
DE10109407A1 (en) 2001-02-28 2002-09-05 Bosch Gmbh Robert Fuel injector
ITTO20010787A1 (en) 2001-08-03 2003-02-03 Rft Spa An injection assembly provided with seals, for an internal combustion engine.

Also Published As

Publication number Publication date
US20070251503A1 (en) 2007-11-01
DE502004011289D1 (en) 2010-07-29
US7377264B2 (en) 2008-05-27
JP2007514102A (en) 2007-05-31
EP1697632A1 (en) 2006-09-06
DE10358913A1 (en) 2005-09-01
WO2005059352A1 (en) 2005-06-30
JP4404908B2 (en) 2010-01-27

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