EP1066469B1 - Brennstoffeinspritzvorrichtung - Google Patents

Brennstoffeinspritzvorrichtung Download PDF

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Publication number
EP1066469B1
EP1066469B1 EP99957939A EP99957939A EP1066469B1 EP 1066469 B1 EP1066469 B1 EP 1066469B1 EP 99957939 A EP99957939 A EP 99957939A EP 99957939 A EP99957939 A EP 99957939A EP 1066469 B1 EP1066469 B1 EP 1066469B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
connecting means
injection device
connection piece
fuel
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
EP99957939A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1066469A1 (de
Inventor
Martin Andorfer
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 EP1066469A1 publication Critical patent/EP1066469A1/de
Application granted granted Critical
Publication of EP1066469B1 publication Critical patent/EP1066469B1/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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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

Definitions

  • the invention is based on a fuel injection device according to the genus of the main claim.
  • Fuel injection devices are already from a number of publications known to have a fuel rail have on which several connecting pieces for one Installation of fuel injectors are provided. Usually become safe and possibly non-rotating installation of the fuel injectors in the Connecting pieces additional connecting elements used, that act like clips or clasps in the connection area.
  • Such connecting elements include from DE-OS 34 28 597 a U-shaped spring clip, from DE-OS 39 04 479 a C-shaped plastic clip, from DE-OS 39 18 410 U-shaped spring clip, also from DE-OS 40 17 875 a U-shaped spring clip, from DE-OS 44 13 914 lockable, two-leg plastic clip, from the US PS 4,823,754 a U-shaped mounting bracket and from the US-PS 5,035,224 a U-shaped spring clip is known.
  • a fuel injector according to the preamble of claim 1 only US-A-5 724 946 is known.
  • the fuel injection device according to the invention with the characteristic features of the main claim has the Advantage that in a simple way a firm and Safe connection of fuel injectors Connection piece of fuel distributors is made possible. There are none to fix the fuel injectors additional clip-like or clasp-like Fasteners required. In this way, one very easy assembly and disassembly guaranteed.
  • the fuel injection device is advantageous designed such that due to interruptions in the end section of the connecting piece under radial Tension whose connecting means radially effective in the depressed corresponding lanyard.
  • FIG. 1 shows a partially illustrated fuel injector, figure 2 a first training variant of a connecting piece as a section along the line II-II in Figure 1, Figure 3 a second training variant of a connecting piece as a section along the line III-III in Figure 1, Figure 4 a third training variant of a connecting piece as a section along the line IV-IV in Figure 1 and Figure 5 a schematic and partially broken side view the connecting piece.
  • the fuel injector partially shown in Figure 1 for internal combustion engines has one Fuel distributor 10 made of plastic or aluminum, which carries a plurality of connecting pieces 11. According to the number of connecting pieces 11 are in the same number of fuel injection valves 12 are provided, which with their inlet ends in Project supply openings 13 of the connecting pieces 11.
  • the fuel injectors 12 are therefore as so-called top feed injectors.
  • the number of connecting pieces 11 and Fuel injection valves 12 depends on the number of cylinder to be supplied to the internal combustion engine. At a four-cylinder internal combustion engines are, for example, four Fuel injectors 12 are provided, each in one of four connecting pieces 11 of the fuel distributor 10 liquid-tight using an upper sealing ring 14 are used.
  • a liquid tight Installation of the fuel injector 12 is done here ensures a lower sealing ring 18.
  • usable fuel injection valves 12 is e.g. to electromagnetically actuated valves or around with piezo actuators or magnetostrictive actuators operated valves.
  • the supply opening 13 of the connecting piece 11 is e.g. stepped, the supply opening 13 a smaller diameter near a distributor opening 20 of the Fuel distributor 10 has as in one Fuel injector 12 encompassing area 21 of the Connection piece 11.
  • the outer diameter of the Connection piece 11 is constant over its entire length.
  • Connector 11 is at least a hook-shaped Connection means 22 formed.
  • This at least one Connection means 22 engages in a corresponding one Recessing connecting means 23 on the outer Scope of the fuel injector 12.
  • This recessed connecting means 23 for example around a circumferential groove in the Plastic injection molding of the fuel injector 12.
  • Figure 2 shows a first embodiment of a Connection piece 11 as a section along the line II-II in Figure 1, while Figure 3 is a second and Figure 4 is a third training variant of a connecting piece 11 as a section along the line III-III or line IV-IV clarify in Figure 1.
  • Figure 4 is a third training variant of a connecting piece 11 as a section along the line III-III or line IV-IV clarify in Figure 1.
  • the sectional representations it is only the cut connecting piece 11 without the fuel injector 12 insertable therein.
  • FIGs 2 and 3 are two examples of a two-part connecting means 22a, 22b shown. Diametrically opposite are two in cross section hook-shaped and each about 80 ° (Figure 2) in Connecting means 22a, 22b extending circumferentially intended.
  • the connecting means 22a, 22b can, however just as well in an angular range from 20 ° to 120 ° extend.
  • When using such a trained Connection piece 11 can be the corresponding Connection means 23 of the fuel injection valve 12 also be shared.
  • the connecting means 22a, 22b in two groove-shaped or slit-like, but non-rotating connection means 23 am Intervene fuel injector 12. That way given a very simple anti-twist device.
  • the two connecting means 22a, 22b do not have to be one have the same extension. Will the Connecting means 22a, 22b and the corresponding ones Connection means 23 of different sizes, as it is FIG. 3 shows an often desirable result clear installation position of the fuel injector 12 in Connection piece 11. This way is without additional Design means ensures that exactly one you want Installation position is realized.
  • the connecting means 22 can also consist of more than two parts consist; three to eight connecting means 22a, 22b can also make sense.
  • the lanyard 22 ' can also be designed in one piece, as in FIG. 4 can be seen.
  • the connecting means extends 22 ', however, in no case in the circumferential direction over 360 °, but for example over an angular range of 240 ° to 320 °.
  • connection piece 11 in the fuel distributor 10 facing away and facing the connecting means 22, 22 ' End section 25 with at least one interruption 26 provided that a slight radial spreading of the Connection 11 allowed.
  • connecting pieces 11 which have two interruptions 26 which are exactly diametrical are opposite. In this way, two segments of the End section 25, in the middle of each Connection means 22 are arranged. The end section 25 however, e.g. also with three to eight interruptions 26 be trained, so that then three to eight There are segments of the end section 25, in turn three to eight connecting means 22 are executed.
  • Figure 4 shows an example of a Connection piece 11 with only one interruption 26.
  • the interruptions 26 are slot-like, for example executed, the axial length of the breaks 26th is limited.
  • the interruptions are ideally 26 only run so long that it is in the installed state of the Fuel injector 12 in the connector 11 first start downstream of the upper sealing ring 14 and up extend towards the connecting means 22, 22 '.
  • the Interruptions 26 are therefore only immediately in the lower End portion 25 of the connecting piece 11 introduced so a complete seal through the upper sealing ring 14 is guaranteed. This configuration is shown in FIG a schematic and partially broken side view of the connecting piece 11 illustrated.
  • the inner one Supply opening 13 in the area 21 or the upper sealing ring 14 have diameters, of which at least one Connecting means 22, 22 'further inwards towards a valve longitudinal axis 28 protrudes so that the sealing ring 14 viewed indirectly over a certain axial distance from the connecting means 22, 22 'is engaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP99957939A 1999-01-21 1999-10-28 Brennstoffeinspritzvorrichtung Expired - Lifetime EP1066469B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19902186 1999-01-21
DE19902186A DE19902186A1 (de) 1999-01-21 1999-01-21 Brennstoffeinspritzvorrichtung
PCT/DE1999/003450 WO2000043668A1 (de) 1999-01-21 1999-10-28 Brennstoffeinspritzvorrichtung

Publications (2)

Publication Number Publication Date
EP1066469A1 EP1066469A1 (de) 2001-01-10
EP1066469B1 true EP1066469B1 (de) 2004-10-13

Family

ID=7894880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957939A Expired - Lifetime EP1066469B1 (de) 1999-01-21 1999-10-28 Brennstoffeinspritzvorrichtung

Country Status (8)

Country Link
US (1) US6491026B1 (ko)
EP (1) EP1066469B1 (ko)
JP (1) JP2002535550A (ko)
KR (1) KR20010086261A (ko)
BR (1) BR9908987A (ko)
DE (2) DE19902186A1 (ko)
ES (1) ES2233087T3 (ko)
WO (1) WO2000043668A1 (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145035A1 (de) * 2001-09-13 2003-04-10 Bosch Gmbh Robert Brennstoffeinspritzsystem
JP2004353520A (ja) 2003-05-28 2004-12-16 Mitsubishi Electric Corp 燃料噴射装置
US7107969B2 (en) * 2004-09-28 2006-09-19 Ford Global Technologies, Llc Twist-lock fuel injector assembly
DE602005024420D1 (de) * 2005-12-02 2010-12-09 Continental Automotive Gmbh Kraftstoffeinspritzvorrichtung
US7383818B1 (en) * 2007-04-04 2008-06-10 Gm Global Technology Operations, Inc. Fuel injector with secondary combustion seal
US20080295806A1 (en) * 2007-06-04 2008-12-04 Caterpillar Inc. Heat conducting sleeve for a fuel injector
EP2083167B1 (en) * 2008-01-23 2017-05-10 Continental Automotive GmbH Coupling arrangement and connection assembly
EP2093413B1 (en) * 2008-02-19 2011-01-12 Continental Automotive GmbH Coupling device
EP2093412B1 (en) * 2008-02-19 2011-01-19 Continental Automotive GmbH Coupling device
DE102008055105A1 (de) * 2008-12-22 2010-07-01 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
JP4692663B2 (ja) * 2009-03-31 2011-06-01 株式会社デンソー コネクタ

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010613A1 (de) * 1980-03-20 1981-10-01 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage
DE3428597C2 (de) 1984-08-02 1986-11-27 Bayerische Motoren Werke AG, 8000 München Verbindung zweier koaxial hintereinander angeordneter Rohrabschnitte, insbesondere einer Einspritzdüse mit dem koaxial angeordneten Anschlußstutzen einer Einspritzleitung
JPS63125171U (ko) 1987-02-09 1988-08-16
DE3904479A1 (de) 1989-02-15 1990-08-16 Bosch Gmbh Robert Verbindungselement
DE3918410A1 (de) 1989-06-06 1990-12-13 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen
DE3919231C2 (de) 1989-06-13 1997-03-06 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
US4950171A (en) * 1989-08-11 1990-08-21 Itt Corporation Fuel injector connector system
US4991557A (en) * 1989-08-21 1991-02-12 Siemens-Bendix Automotive Electronics L.P. Self-attaching electromagnetic fuel injector
DE4017875C2 (de) 1990-06-02 1999-02-04 Bosch Gmbh Robert Brennstoffeinspritzeinrichtung für Brennkraftmaschinen
US5035224A (en) 1990-07-06 1991-07-30 Siemens Automotive L.P. Clip retention of a split-stream fuel injector to a fuel rail cup including circumferential locator
US5394850A (en) * 1993-11-19 1995-03-07 Siemens Electric Limited Top-feed fuel injector mounting in an integrated air-fuel system
DE4413914A1 (de) 1994-04-21 1995-10-26 Bosch Gmbh Robert Brennstoffeinspritzeinrichtung
US5616037A (en) * 1995-08-04 1997-04-01 Siemens Automotive Corporation Fuel rail with combined electrical connector and fuel injector retainer
DE19546441A1 (de) 1995-12-13 1997-06-19 Bosch Gmbh Robert Brennstoffverteiler
US5724946A (en) 1996-11-22 1998-03-10 Siemens Automotive Corporation Fuel rail and injector assembly
DE19725076A1 (de) * 1997-06-13 1998-12-17 Bosch Gmbh Robert Brennstoffeinspritzanlage
DE19756102A1 (de) * 1997-12-17 1999-06-24 Bosch Gmbh Robert Montagevorrichtung zum Montieren von Brennstoffeinspritzventilen
JP2000018125A (ja) * 1998-07-01 2000-01-18 Mitsubishi Electric Corp 筒内噴射用燃料噴射弁

Also Published As

Publication number Publication date
DE59910842D1 (de) 2004-11-18
JP2002535550A (ja) 2002-10-22
KR20010086261A (ko) 2001-09-10
DE19902186A1 (de) 2000-07-27
WO2000043668A1 (de) 2000-07-27
US6491026B1 (en) 2002-12-10
BR9908987A (pt) 2000-12-12
EP1066469A1 (de) 2001-01-10
ES2233087T3 (es) 2005-06-01

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