EP1373711B1 - Brennstoffeinspritzventil - Google Patents

Brennstoffeinspritzventil Download PDF

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Publication number
EP1373711B1
EP1373711B1 EP02717978A EP02717978A EP1373711B1 EP 1373711 B1 EP1373711 B1 EP 1373711B1 EP 02717978 A EP02717978 A EP 02717978A EP 02717978 A EP02717978 A EP 02717978A EP 1373711 B1 EP1373711 B1 EP 1373711B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
fuel
valve according
receiving bore
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.)
Expired - Lifetime
Application number
EP02717978A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1373711A1 (de
Inventor
Uwe Liskow
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 EP1373711A1 publication Critical patent/EP1373711A1/de
Application granted granted Critical
Publication of EP1373711B1 publication Critical patent/EP1373711B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • 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
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1.
  • a disadvantage of the known from DE 197 35 665 A1 Fuel injection system is, however, that the known Although embodiment a larger tolerance angle allows, but the problem of sealing the annular gap between receiving bore and fuel injector yet reinforced, since at a larger tilt angle the seal only takes place by the elasticity of the sealing ring by this has a large cross-sectional area and elasticity and still dense to a large extent uneven bruising got to.
  • the fuel injection system comprises at least one fuel injection valve, for each combustion chamber, each at a Abspritzabêt in an associated, on the Cylinder head of the engine formed receiving bore is used and has a fuel inlet opening at an inlet section.
  • the Fuel injection system further comprises a fuel distribution line, which for each Fuel injector with the fuel inlet of the Fuel injection valve connectable fuel outlet.
  • a tubular intermediate piece which with the fuel inlet opening of the fuel injection valve and the Fuel outlet of the fuel rail sealing and only in predetermined limits is movably connected. With larger tilting can Tightness may not be guaranteed.
  • the fuel injection valve according to the invention with the Characteristic features of claim 1 has the other hand the advantage that by the partial spherical shape of the formed at the downstream end of the nozzle body Body also has a sealing effect through the sealing ring large tilt angles is guaranteed, since the spherical Body with a large area of an at the Wall of the receiving bore formed calotte rests.
  • Claim 11 also ensures that leaks in one Connecting piece of the fuel rail avoided and the axial displacement of the fuel injection valve in limits can be held.
  • the dome by a cone-shaped Bevel of the wall of the receiving bore to be replaced whereby the machining of the cylinder head is simplified.
  • the simple machining of the cylinder head and the Sealing effect of the calotte can also by means of a in the Mounting hole press-in insert, on which the dome is designed to be combined. This allows the Sealing ring due to the pressing effect even completely omitted.
  • Fig. 1 shows a schematic partial section through a Embodiment of an inventively designed Fuel injection valve in a receiving bore of a Cylinder head of a mixture-compression, spark-ignited Internal combustion engine.
  • a fuel injection valve 1 is in the form of a directly injecting fuel injection valve 1 executed and in a cylinder head 2 a Internal combustion engine installed.
  • the fuel injector 1 has a plug connection at an inlet end 3 to a fuel rail 4, which by a Seal 5 between the fuel rail 4 and a supply pipe 6 of the fuel injection valve. 1 is sealed.
  • the fuel injection valve 1 has via an electrical connection 7 for the electrical Contacting for actuating the fuel injection valve 1.
  • the fuel injection valve 1 is in a receiving bore 8 of the cylinder head 2 is arranged and has a Nozzle body 10 and a valve housing 11.
  • the Valve housing 11 may be on a wall 9 of the receiving bore 8 supported.
  • the nozzle body 10 has at one outgoing end 12 according to the invention a spherical Body 13, which is provided with a sealing ring 14 for sealing the Cylinder head 2 against the not shown Combustion chamber of the internal combustion engine is used.
  • the sealing ring 14 is preferably arranged in a groove 15, the is formed circumferentially on the spherical body 13.
  • the terminal spherical body 13 integral with the Nozzle body 10 is formed.
  • a detailed description of the first embodiment is the description of FIG. 2A to remove.
  • FIG. 2A shows a schematic detail of the embodiment shown in FIG. 1 designed according to the invention Fuel injection valve in the area IIA in Fig. 1. A Part is to illustrate the invention Measures cut shown. Same components are in all figures with matching reference numerals.
  • a sealing ring 14th receiving spherical body 13 is formed.
  • an equator 16 of the spherical body 13 is arranged.
  • Preferred materials for producing the sealing ring 14 For example, Teflon® or copper, which are high in Flexibility and thus a good adaptability the position of the fuel injection valve 1 in the Receiving bore 8 own.
  • the receiving bore 8 of the cylinder head 2 has a Cap 17, in which the spherical body 13 at the Wall 9 of the receiving bore 8 is present.
  • the Seal 14 on the cap 17 is the Seal 14 on the cap 17 completely.
  • Fig. 2B shows a schematic section of a second embodiment of an inventive designed fuel injection valve in the same Range as Fig. 2A.
  • the embodiment of the second embodiment is that of that described in Figs. 1 and 2A Embodiment similar, wherein the sealing ring 14 now downstream of the equator 16 is arranged.
  • the sealing ring 14 is preferably in turn in a circumferential groove 15th is inserted and is just installed Fuel injector 1 directly to the through the dome 17 formed storage area. Offsets are thus also in Compensable to a greater extent.
  • the groove 15 for example, a Having undercut volume, since the sealing ring 14 flush is deformed with the spherical body 13.
  • a groove 15, which has a slightly larger diameter than the Sealing ring 14, offers itself to provide a Dodge volume.
  • FIGS. 3A and 3B are in the arrangement of the sealing rings 14 equivalent to those in Figs. 2A and 2B illustrated embodiments designed.
  • the third and fourth embodiments in common that the spherical body 13 on outgoing end 12 of the nozzle body 10 is not integral is formed with the nozzle body 10.
  • the spherical one Body 13 rather has an inner recess 18 as Through opening into which the downstream end 12 of the Nozzle body 10 can be inserted.
  • another sealing ring 19 between the Nozzle body 10 and the spherical body 13 is arranged be, thus the sealing effect between combustion chamber and Cylinder head 2 is preserved.
  • the advantage of this arrangement is in particular that a conventional arrangement of Sealing ring 19 on the nozzle body 10 does not have to be changed, but only the spherical body 13 on the end 12 of the Nozzle body 10 is attached. Only proviso to the Nozzle body 10 is a support collar 20, at which the spherical body 13 can be supported.
  • the spherical body 13 can be placed on the end 12 of the Nozzle body 10 either alone by the compression be attached to the sealing ring 19 or by means of a Welding point to be additionally secured.
  • Fig. 4 shows a schematic section of a fifth embodiment of an inventive designed fuel injection valve.
  • the Receiving bore 8 of the cylinder head 2 in the region of downstream end 12 of the nozzle body 10 of the Fuel injection valve 1 no calotte 17, but only a conical chamfer 21.
  • the sealing ring 14 should be like in the embodiment described in Fig. 2B be arranged downstream of the equator 16 to a to achieve reliable sealing effect. It is advantageous This embodiment that no great demands must be placed on the shape of the chamfer 21, the Processing of the receiving bore 8 is designed accordingly easy and inexpensive.
  • Fig. 5 shows a schematic section of a sixth embodiment of an inventive designed fuel injection valve. 1
  • FIGS. 1 to 3 characterized by the shape of the dome 17 and the associated large contact surface already without sealing ring 14 by a high sealing effect.
  • This will be in the in Fig. 5 illustrated embodiment exploited by the calotte 17 is formed on an annular insert 22 is in the receiving bore 8, the shoulder 23 has, is pressed. This can cause a tension of the annular insert 22 in addition to the sealing effect contribute, so that a separate sealing ring 14 and the Groove 15 can be dispensed with.
  • the fuel injection valve 1 shown in Fig. 5 has to reduce the between the sealing area and the Combustion chamber existing dead volume in addition one Extension 24 on. This additional measure is also at applicable to the embodiments described above and in particular in the in Figs. 2A and 2B and 4 illustrated fuel injection valves 1 for reducing the dead volume makes sense.
  • Fig. 6 shows a schematic, partially sectioned View of a seventh embodiment of a Inventive fuel injector 1 in one General view dar.
  • Fig. 6 are the possible offsets by means of different axes characterized.
  • the dotted line denotes a Longitudinal axis 28 of the fuel injection valve 1. This can, as shown in Fig. 6, against a general Symmetry axis 29, which is perpendicular to the in Fig. 6 only Annotated cylinder head 2 is shown and the Longitudinal axis 28 of the fuel injection valve 1 in one imaginary center 30 of the spherical body 13 cuts, inclined at an angle of, for example, 5 ° be.
  • the spring 25 according to the invention can z. B. in conjunction with an example according to the executed embodiments described above spherical body 13 at the downstream end 12 of the Fuel injection valve 1 of skewing in some Counteract dimensions.
  • the longitudinal axis 31 of the connection piece 26 of the fuel rail 4 is for the better Orientation shown in Fig. 6 dot-dashed lines.
  • the invention is not limited to those shown Embodiments limited and, for example, for Fuel injection valves 1 for injection into the Combustion chamber of a self-igniting internal combustion engine applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP02717978A 2001-02-28 2002-02-27 Brennstoffeinspritzventil Expired - Lifetime EP1373711B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10109611 2001-02-28
DE10109611A DE10109611A1 (de) 2001-02-28 2001-02-28 Brennstoffeinspritzventil
PCT/DE2002/000692 WO2002068813A1 (de) 2001-02-28 2002-02-27 Brennstoffeinspritzventil

Publications (2)

Publication Number Publication Date
EP1373711A1 EP1373711A1 (de) 2004-01-02
EP1373711B1 true EP1373711B1 (de) 2005-02-09

Family

ID=7675783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02717978A Expired - Lifetime EP1373711B1 (de) 2001-02-28 2002-02-27 Brennstoffeinspritzventil

Country Status (6)

Country Link
US (3) US6899291B2 (ja)
EP (1) EP1373711B1 (ja)
JP (2) JP4163958B2 (ja)
DE (2) DE10109611A1 (ja)
RU (1) RU2003127398A (ja)
WO (1) WO2002068813A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256668A1 (de) 2002-12-04 2004-07-29 Robert Bosch Gmbh Stützelement
DE102004055317A1 (de) 2004-11-16 2006-05-24 Bosch Rexroth Aktiengesellschaft Elektrische Drehfeldmaschine und Primärteil
DE102005006641A1 (de) * 2005-02-14 2006-08-24 Siemens Ag Einspritzventil zum Einspritzen von Kraftstoff und Zylinderkopf
US7472844B2 (en) * 2005-12-21 2009-01-06 Caterpillar Inc. Fuel injector nozzle with tip alignment apparatus
DE102006052817A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Brennstoffeinspritzventil
EP2916054A2 (fr) * 2007-03-28 2015-09-09 Fillon Technologies Valve de dosage
EP2077390B1 (en) * 2008-01-07 2012-09-05 Continental Automotive GmbH Coupling arrangement and connection assembly
DE602008004642D1 (de) * 2008-07-03 2011-03-03 Continental Automotive Gmbh Flüssigkeitseinspritzanordnung
US20110030656A1 (en) * 2009-08-10 2011-02-10 Pepperine Dean M Fuel Injector to Fuel Rail Coupling
JP5513191B2 (ja) * 2010-03-19 2014-06-04 株式会社ケーヒン 筒内噴射式燃料噴射弁への燃料供給装置
JP5831510B2 (ja) 2012-11-20 2015-12-09 株式会社デンソー 燃料噴射弁および燃料噴射弁の取付方法
RU2581502C1 (ru) * 2014-10-28 2016-04-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный машиностроительный университет"(МАМИ)"(Университет машиностроения) Устройство для установки инжектора подачи топлива во впускном коллекторе двигателя внутреннего сгорания
JP6754902B2 (ja) * 2017-07-14 2020-09-16 日立オートモティブシステムズ株式会社 電磁吸入弁、及びこれを備えた高圧燃料ポンプ
US11174825B2 (en) * 2019-02-11 2021-11-16 Caterpillar Inc. Seal configuration for fuel injector
DE102021104408A1 (de) 2021-02-24 2022-08-25 Robert Bosch Gesellschaft mit beschränkter Haftung Brennraumdichtung für einen Kraftstoffinjektor und Brennkraftmaschine

Family Cites Families (21)

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Publication number Priority date Publication date Assignee Title
DE2555019A1 (de) * 1975-12-06 1977-06-16 Bosch Gmbh Robert Kraftstoffeinspritzventil fuer vor- und haupteinspritzung
FR2485637B1 (fr) * 1980-06-27 1985-06-14 Inst Francais Du Petrole Ensemble pompe-injecteur de combustible pour moteur a combustion interne
JPS57125212A (en) * 1981-01-27 1982-08-04 Toshiba Corp Photo-polymerizable composition
DE3511463A1 (de) * 1985-03-29 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
DE3520367A1 (de) * 1985-06-07 1986-12-11 Pierburg Gmbh & Co Kg, 4040 Neuss Gemischbildner fuer brennkraftmaschinen
GB8706757D0 (en) * 1987-03-21 1987-04-23 Lucas Ind Plc Fuel injection nozzles
JPS63180783U (ja) * 1987-05-14 1988-11-22
JPH0318662A (ja) * 1989-05-29 1991-01-28 Aisan Ind Co Ltd 電磁式燃料噴射弁のノズル構造
DE4035146A1 (de) * 1990-11-06 1992-05-07 Riek Siegfried Instrument zum penetrieren von koerpergewebe
US5625946A (en) * 1995-05-19 1997-05-06 Siemens Automotive Corporation Armature guide for an electromechanical fuel injector and method of assembly
US5755386A (en) * 1995-12-26 1998-05-26 General Motors Corporation Fuel injector deep drawn valve guide
DE19647587A1 (de) * 1996-11-18 1998-05-20 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19654322C2 (de) * 1996-12-24 1999-12-23 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
DE19703200A1 (de) * 1997-01-30 1998-08-06 Bosch Gmbh Robert Brennstoffeinspritzventil
US5979803A (en) * 1997-05-09 1999-11-09 Cummins Engine Company Fuel injector with pressure balanced needle valve
DE19735665A1 (de) 1997-06-25 1999-01-07 Bosch Gmbh Robert Brennstoffeinspritzanlage
DE19756102A1 (de) * 1997-12-17 1999-06-24 Bosch Gmbh Robert Montagevorrichtung zum Montieren von Brennstoffeinspritzventilen
FR2776025B1 (fr) * 1998-03-11 2000-08-11 Peugeot Ensemble d'injection de carburant dans un moteur a combustion interne et a injection directe
JP3039510B2 (ja) * 1998-03-26 2000-05-08 トヨタ自動車株式会社 内燃機関用燃料噴射弁
US6019089A (en) * 1998-10-14 2000-02-01 Ford Motor Company Arrangement for orienting a fuel injector to a fuel manifold cup
DE19931822A1 (de) * 1999-07-08 2001-01-11 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
US20050211226A1 (en) 2005-09-29
DE10109611A1 (de) 2002-09-05
US20030150427A1 (en) 2003-08-14
RU2003127398A (ru) 2005-03-20
JP2008051119A (ja) 2008-03-06
JP2004518861A (ja) 2004-06-24
WO2002068813A1 (de) 2002-09-06
DE50202217D1 (de) 2005-03-17
JP4163958B2 (ja) 2008-10-08
EP1373711A1 (de) 2004-01-02
US20050224054A1 (en) 2005-10-13
US7143966B2 (en) 2006-12-05
US6899291B2 (en) 2005-05-31

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