EP0485545A1 - Fuel injection device for internal-combustion engines. - Google Patents

Fuel injection device for internal-combustion engines.

Info

Publication number
EP0485545A1
EP0485545A1 EP91908413A EP91908413A EP0485545A1 EP 0485545 A1 EP0485545 A1 EP 0485545A1 EP 91908413 A EP91908413 A EP 91908413A EP 91908413 A EP91908413 A EP 91908413A EP 0485545 A1 EP0485545 A1 EP 0485545A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
connecting piece
spring
locking elements
valve housing
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
EP91908413A
Other languages
German (de)
French (fr)
Other versions
EP0485545B1 (en
Inventor
Helmut Bassler
Thomas Naeger
Jochen Friedmann
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 EP0485545A1 publication Critical patent/EP0485545A1/en
Application granted granted Critical
Publication of EP0485545B1 publication Critical patent/EP0485545B1/en
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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
    • 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
    • F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
    • 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
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa

Definitions

  • the invention is based on a fuel injection device for internal combustion engines of the type defined in the preamble of claim 1.
  • the connecting member is designed as a U-shaped spring clip, the web of which extends transversely to the longitudinal extent of the fuel injection valve and the legs of which, on the one hand, are flanged in a circumferential groove on the edge with radially inwardly bent tabs Engage the valve housing of the fuel injector and, on the other hand, have openings in which a locking collar running around the connecting piece can be snapped into place.
  • the tabs For the radial fixation of the spring clip in the circumferential groove of the valve housing, the tabs have sections in the shape of a circular arc and concave, the radius of which corresponds to that of the circumferential groove.
  • the spring clip is first pushed onto the fuel injector, the legs engaging with their tabs in the circumferential groove. Then the fuel injector provided with the spring clip is inserted axially into the connecting piece. So that the legs can slide over the locking collar, they are in the direction of insertion angled outside and are spread out by the locking collar when inserted. As soon as the locking collar has engaged in the openings, the legs spring back into their starting position.
  • the fuel injection device according to the invention with the characterizing features of claim 1 has the advantage that
  • the fuel injection valves inserted into the connecting pieces and held by means of the connecting members are circumferentially precise and functionally reliable and inexpensive and are twisted by a simple external force, e.g. B. by plugging or unplugging the connecting cable is no longer possible.
  • the connecting links are easy to manufacture and enable easy and automatic assembly.
  • the molded elements on the fuel injection valves can already be taken into account in the molding tool and do not lead to significant additional costs in production.
  • the correct positioning of the fuel injection valves with respect to the intake geometry of the internal combustion engine can be reproduced with high precision even after disassembly for service purposes and is reliably maintained even under rough operating conditions.
  • FIG. 1 shows a partial side view of a fuel injection device, partially in section
  • FIG. 2 shows a view of the fuel injection device in the direction of arrow II in FIG. 1
  • FIG. 3 shows a bottom view of the fuel injection device in FIG. 1 with the fuel injection valve removed
  • FIG. 4 shows a front view of a connecting element in FIG 1 to 3
  • FIG. 5 shows a side view of the connecting member in FIG. 4
  • FIG. 6 shows a top view of the connecting member in FIG. 4.
  • the fuel injection device for internal combustion engines shown in FIGS. 1 and 2 in two different side views, partly in section and in sections, has a fuel distributor 10 made of plastic or e.g. B. aluminum, which carries a plurality of connecting pieces 11 and an equal number of fuel injectors 12 with an existing at one end connection opening for fuel supply.
  • Such fuel injection valves 12 are generally called top-feed valves.
  • the number of connecting pieces 11 on the fuel distributor 10 and the number of fuel injection valves 12 may correspond to or be less than the number of cylinders to be supplied to the internal combustion engine. In a four-cylinder internal combustion engine, four fuel injection valves 12 are thus to be provided, which are each inserted in a liquid-tight manner in one of four connecting pieces 11 on the fuel distributor 10.
  • each connecting piece 11 is provided at the free end with two radially projecting locking elements 13, 30 and each fuel injection valve 12 with a circumferential groove 14 in its valve housing 15, and a connecting member 16 is provided for each fuel injection valve 12. which engages in the circumferential groove 14 on the one hand and on the other hand engages over the locking elements 13, 30.
  • FIGS. 4 to 6 An embodiment of such a connecting member 16 is shown in Figures 4 to 6. It is formed by an approximately U-shaped spring clip 17, which is made from a stamped sheet metal part or is designed as a plastic injection-molded part.
  • the spring clip 17 has two spring legs 18, 19 and a spring web 20 connecting them.
  • Spring legs 18, 19 and spring bar 20 each extend approximately parallel to in the functional position of the spring clip 17 Center line 41 of connecting piece 11 and fuel injection valve 12.
  • an inwardly directed tab 21 or 22 projects approximately at right angles, which has a contour 23 or 24 adapted to the circumferential groove 14 in the valve housing 15 se intervenes.
  • the spring legs 18, 19 each have a longitudinally extending rectangular opening 25 or 26, the width of which is dimensioned in the direction of the center line 41 such that each locking element 13, 30 on the connecting piece 11 is able to pass through the openings 25, 26 and is thus overlapped on both sides by the spring legs 18, 19.
  • the spring legs 18, 19 are angled obliquely outwards in their longitudinal edge region 43, 44 facing the connecting piece 11, so that they can be pushed onto the connecting piece easily, preferably mechanically.
  • Two sheet metal segments 27, 28 extend approximately parallel to the center line 41 from the spring bar 20.
  • the sheet metal segments 27, 28 form a fixing element in the form of a central longitudinal slot 29, which is open towards the free end of the sheet metal segments 27, 28 facing away from the spring bar 20 is.
  • the rectangular sheet metal segments 27, 28 directed towards the fuel injection valve 12 are bent inward in the end region facing away from the spring web 20.
  • a molded element in the form of a radially projecting cam, web or rib 32 is arranged on the outside of the valve housing 15 of each fuel injection valve 12.
  • the spring clip 17 thus locks the fuel injection valve 12 on the connecting piece 11 both in the axial direction and in the circumferential direction, so that it is neither pulled off in the axial direction nor exerted in the circumferential direction without external force. can be rotated.
  • the cams 32 are attached at a defined position, so that the fuel injection valve 12, which is designed as a multi-jet valve, is positioned exactly in relation to the suction geometry in the internal combustion engine with respect to its jet planes after being locked on the connecting piece 11.
  • the two locking elements 13, 30 extend at a distance from one another on the circumference of the connecting piece 11 and extend only over a part of this primary area.
  • the locking elements 13, 30 are mirror images and are arranged essentially symmetrically to a plane of symmetry 47 which runs through the center line 41 and perpendicular to a longitudinal axis 48 of the fuel distributor 10.
  • Each locking element 13, 30 has a rectangular cross-section with longitudinal sides 50 running in the circumferential direction of the connecting piece 11 and narrow sides 51 running perpendicularly to it.
  • at least one narrow side 51 of each locking element 13, 30 is formed so that it faces away from the connecting piece 11 and protrudes sharp-edged from the respective rectangular opening 25, 26 of the spring clip 17.
  • the narrow sides 51 of the locking elements 13, 30 protruding from the respective opening 25, 26 lie symmetrically to the plane of symmetry 47, that is to say on the same side of the longitudinal axis 48.
  • Each locking element 13, 30 has an end face 52 which, starting from the Breakthrough 25, 26 protruding narrow side 51 initially runs parallel and then inclined to the plane of symmetry 47 to the other narrow side 51. As a result, the spring clip 17 is not widened too much during assembly.
  • Each opening 25, 26 completely encloses one of the locking elements 13, 30.
  • Each of the locking elements 13, 30 can of course also have a suitable other cross-section, such as. B. oval, diamond-shaped, triangular or the like, in which case the openings 25, 26 of the spring clip 17 are adapted in a corresponding manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Un dispositif d'injection de carburant pour moteurs à combustion interne présente un distributeur de carburant (10) comportant une pluralité d'ajutages (11) munis d'éléments de verrouillage (13, 30) en saillie radialement, et une pluralité de soupapes d'injection de carburant (12) réalisées sous la forme de soupapes dites "top-feed" ou d'alimentation de tête qui sont insérées hermétiquement dans les ajutages (11). Pour la fixation des soupapes d'injection (12) en direction axiale et pour empêcher toute rotation de celles-ci dans le sens périphérique, il est prévu pour chacune d'elles un élément de raccordement (16) venant se loger dans une rainure périphérique (14) de la cage (15) de la soupape et recouvrant les éléments de verrouillage (13, 30). De plus, l'élément de raccordement (16) présente un élément de fixation (29) venant en prise, tout en assurant une liaison solidarisée, au moins en direction périphérique, avec un élément profilé (32) disposé en un emplacement déterminé sur la cage (15) de la soupape.A fuel injection device for internal combustion engines has a fuel distributor (10) comprising a plurality of nozzles (11) provided with locking elements (13, 30) projecting radially, and a plurality of valves d fuel injection (12) made in the form of so-called "top-feed" valves or head supply which are hermetically inserted in the nozzles (11). For fixing the injection valves (12) in the axial direction and to prevent any rotation thereof in the peripheral direction, there is provided for each of them a connecting element (16) which is received in a peripheral groove (14) of the cage (15) of the valve and covering the locking elements (13, 30). In addition, the connecting element (16) has a fastening element (29) engaging, while ensuring an integral connection, at least in peripheral direction, with a profiled element (32) disposed at a determined location on the valve cage (15).

Description

Brennstoffeinspritzeinrichtunσ für BrennkraftmaschinenFuel injection device for internal combustion engines
Stand der TechnikState of the art
Die Erfindung geht aus von einer Brennstoffeinspritzeinrichtung für Brennkraftmaschinen der im Oberbegriff des Anspruchs 1 definierten Gattung.The invention is based on a fuel injection device for internal combustion engines of the type defined in the preamble of claim 1.
Bei einer bekannten Brennstoffeinspritzeinrichtung dieser Art (DE 34 28 597 C2) ist das Verbindungsglied als U-förmige Federklam¬ mer ausgebildet, deren Steg quer zur Längserstreckung des Brenn¬ stoffeinspritzventils verläuft und deren Schenkel einerseits mit am Rand radial einwärts gebogenen Lappen in eine Umfangsnut am Ventil¬ gehäuse des Brennstoffeinspritzventils eingreifen und andererseits Durchbrechungen aufweisen, in die ein am Anschlußstutzen umlaufender Verriegelungsbund einrastbar ist. Zur radialen Fixierung der Feder¬ klammer in der Umfangsnut des Ventilgehäuses weisen die Lappen kreisbogenförmig und konkav verlaufende Abschnitte auf, deren Radius dem der Umfangsnut entspricht. Bei der Montage wird zuerst die Fe- derkla mer auf das Brennstoffeinspritzventil aufgeschoben, wobei die Schenkel mit ihren Lappen in die Umfangsnut einrasten. Dann wird das mit der Federklammer versehene Brennstoffeinspritzventil axial in den Anschlußstutzen eingeschoben. Damit die Schenkel über den Ver¬ riegelungsbund gleiten können, sind diese in Einsteckrichtung nach außen abgewinkelt und werden von dem Verriegelungsbund beim Ein¬ stecken aufgespreizt. Sobald der Verriegelungsbund in die Durchbre¬ chungen eingerastet ist, springen die Schenkel wieder in ihre Aus¬ gangsstellung zurück.In a known fuel injection device of this type (DE 34 28 597 C2), the connecting member is designed as a U-shaped spring clip, the web of which extends transversely to the longitudinal extent of the fuel injection valve and the legs of which, on the one hand, are flanged in a circumferential groove on the edge with radially inwardly bent tabs Engage the valve housing of the fuel injector and, on the other hand, have openings in which a locking collar running around the connecting piece can be snapped into place. For the radial fixation of the spring clip in the circumferential groove of the valve housing, the tabs have sections in the shape of a circular arc and concave, the radius of which corresponds to that of the circumferential groove. During assembly, the spring clip is first pushed onto the fuel injector, the legs engaging with their tabs in the circumferential groove. Then the fuel injector provided with the spring clip is inserted axially into the connecting piece. So that the legs can slide over the locking collar, they are in the direction of insertion angled outside and are spread out by the locking collar when inserted. As soon as the locking collar has engaged in the openings, the legs spring back into their starting position.
Bei einer solchen Brennstoffeinspritzeinrichtung ist zwar eine axiale Sicherung der Brennstoffeinspritzventile gegen unbeabsichtig¬ tes Abziehen von dem Brennstoffverteiler gegeben, nicht jedoch eine Sicherung gegen Verdrehung der Brennstoffeinspritzventile in Um- fangsrichtung, wie diese z. B. bei der Montage oder beim Aufstecken oder Abziehen der Anschlußkabel für die Brennstoffeinspritzventile auftreten kann. Bei Verwendung von sogenannten Mehrstrahl-Brenn¬ stoffeinspritzventilen ist jedoch eine genaue Positionierung der einzelnen Strahlebenen der Brennstoffeinspritzventile zur Ansauggeo— etrie der Brennkraftmaschine erforderlich, die nicht verändert wer¬ den darf; denn jede Abweichung von dieser Position durch Verdrehung in Umfangsrichtung führt zu einer Verschlechterung der Gemischaufbe¬ reitung und zu einer Ungleichverteilung des Brennstoffes auf die einzelnen Zylinder der Brennkraftmaschine.In the case of such a fuel injection device, there is an axial securing of the fuel injection valves against unintentional removal from the fuel distributor, but there is no securing against rotation of the fuel injection valves in the circumferential direction, as is the case for example. B. may occur during assembly or when plugging in or unplugging the connecting cables for the fuel injectors. When using so-called multi-jet fuel injection valves, however, an exact positioning of the individual jet levels of the fuel injection valves for the intake geometry of the internal combustion engine is required, which must not be changed; because any deviation from this position due to rotation in the circumferential direction leads to a deterioration of the mixture preparation and to an uneven distribution of the fuel to the individual cylinders of the internal combustion engine.
Weiterhin ist bei einer Brennstoffeinspritzeinrichtung vorgeschlagen worden (Patentanmeldung P 39 18 410.2), daß zur Fixierung des Brenn- stoffeinspritzventiles in Umfangsrichtung am Anschlußstutzen und am Ventilgehäuse Formelemente angebracht sind, mit denen je ein Fixier¬ element an der Federklammer zusammenwirkt. Hierbei ergibt sich ein großer Aufwand, denn am Anschlußstutzen ist zusätzlich zum Verrie¬ gelungsbund das Formelement und an der Federkla mer ein oberes und ein unteres Fixierelement erforderlich.Furthermore, it has been proposed in a fuel injection device (patent application P 39 18 410.2) that for fixing the fuel injection valve in the circumferential direction, molded elements are attached to the connecting piece and to the valve housing, with each of which a fixing element on the spring clip interacts. This results in a great deal of effort, since in addition to the locking collar, the shaped element is required on the connecting piece and an upper and a lower fixing element are required on the spring clip.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Brennstoffeinspritzeinrichtung mit den kenn¬ zeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, daß auf ein- fache und kostengünstige Weise die in den Anschlußstutzen eingesetz¬ ten und mittels der Verbindungsglieder gehaltenen Brennstoffein¬ spritzventile in Umfangsrichtung toleranzmäßig genau sowie funk¬ tionsicher eingebaut sind und ein Verdrehen durch einfache Kraftein¬ wirkung von außen, z. B. durch Aufstecken oder Abziehen der An¬ schlußkabel, nicht mehr möglich ist. Die Verbindungsglieder lassen sich einfach fertigen und ermöglichen eine leichte und automatische Montage. Die Formelemente an den Brennstoffeinspritzventilen können bereits im Formwerkzeug berücksichtigt werden und führen nicht zu nennenswerten Mehrkosten in der Fertigung. An den Anschlußstutzen sind keine gesonderten Formelemente und am Verbindungsglied ist nur ein Fixierelement erforderlich. Die richtige Positionierung der Brennstoffeinspritzventile bezüglich der Ansauggeometrie der Brenn¬ kraftmaschine ist auch nach Demontage zu Servicezwecken hochgenau reproduzierbar und wird auch unter rauhen Betriebsbedingungen zuver¬ lässig eingehalten.The fuel injection device according to the invention with the characterizing features of claim 1 has the advantage that The fuel injection valves inserted into the connecting pieces and held by means of the connecting members are circumferentially precise and functionally reliable and inexpensive and are twisted by a simple external force, e.g. B. by plugging or unplugging the connecting cable is no longer possible. The connecting links are easy to manufacture and enable easy and automatic assembly. The molded elements on the fuel injection valves can already be taken into account in the molding tool and do not lead to significant additional costs in production. There are no separate molded elements on the connecting pieces and only one fixing element is required on the connecting member. The correct positioning of the fuel injection valves with respect to the intake geometry of the internal combustion engine can be reproduced with high precision even after disassembly for service purposes and is reliably maintained even under rough operating conditions.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Brennstoffeinspritzeinrichtung möglich.The measures listed in the dependent claims allow advantageous developments and improvements of the fuel injection device specified in claim 1.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung verein¬ facht dargestellt und in der nachfolgenden Beschreibung näher erläu¬ tert. Es zeigen: Figur 1 ausschnittsweise eine Seitenansicht einer Brennstoffeinspritzeinrichtung, teilsweise geschnitten, Figur 2 eine Ansicht der Brennstoffeinspritzeinrichtung in Richtung Pfeil II in Figur 1, Figur 3 eine Unteransicht der Brennstoffeinspritzeinrich¬ tung in Figur 1 bei entferntem Kraftstoffeinspritzventil, Figur 4 eine Vorderansicht eines Verbindungsglieds in der Brennstoffein¬ spritzeinrichtung gemäß Figur 1 bis 3, Figur 5 eine Seitenansicht des Verbindungsglieds in Figur 4, Figur 6 eine Draufsicht des Ver¬ bindungsglieds in Figur 4. Beschreibung des AusführungsbeispielesAn embodiment of the invention is shown in simplified form in the drawing and is explained in more detail in the following description. 1 shows a partial side view of a fuel injection device, partially in section, FIG. 2 shows a view of the fuel injection device in the direction of arrow II in FIG. 1, FIG. 3 shows a bottom view of the fuel injection device in FIG. 1 with the fuel injection valve removed, and FIG. 4 shows a front view of a connecting element in FIG 1 to 3, FIG. 5 shows a side view of the connecting member in FIG. 4, FIG. 6 shows a top view of the connecting member in FIG. 4. Description of the embodiment
Die in Figur 1 und 2 in zwei verschiedenen Seitenansichten, teil¬ weise geschnitten und ausschnittsweise dargestellte Brennstoffein¬ spritzeinrichtung für Brennkraftmaschinen weist einen Brennstoffver¬ teiler 10 aus Kunststoff oder z. B. Aluminium auf, der eine Mehrzahl von Anschlußstutzen 11 trägt und eine gleiche Anzahl von Brennstoff¬ einspritzventilen 12 mit einer an einem Stirnende vorhandenen An¬ schlußöffnung zur BrennstoffVersorgung. Solche Brennstoffeinspritz¬ ventile 12 werden allgemein top-feed-Ventile genannt. Die Anzahl der Anschlußstutzen 11 am Brennstoffverteiler 10 und die Anzahl der Brennstoffeinspritzventile 12 kann der Anzahl der zu versorgenden Zylinder der Brennkraftmaschine entsprechen oder darunter liegen. Bei einer,vierzylindrigen Brennkraftmaschine sind somit vier Brenn¬ stoffeinspritzventile 12 vorzusehen, die jeweils in einen von vier Anschlußstutzen 11 am Brennstoffverteiler 10 flüssigkeitsdicht ein¬ gesetzt werden.The fuel injection device for internal combustion engines shown in FIGS. 1 and 2 in two different side views, partly in section and in sections, has a fuel distributor 10 made of plastic or e.g. B. aluminum, which carries a plurality of connecting pieces 11 and an equal number of fuel injectors 12 with an existing at one end connection opening for fuel supply. Such fuel injection valves 12 are generally called top-feed valves. The number of connecting pieces 11 on the fuel distributor 10 and the number of fuel injection valves 12 may correspond to or be less than the number of cylinders to be supplied to the internal combustion engine. In a four-cylinder internal combustion engine, four fuel injection valves 12 are thus to be provided, which are each inserted in a liquid-tight manner in one of four connecting pieces 11 on the fuel distributor 10.
Zur Halterung der Brennstoffeinspritzventile 12 ist jeder Anschlu߬ stutzen 11 am freien Stirnende mit zwei radial überstehenden Verrie¬ gelungselementen 13, 30 und jedes Brennstoffeinspritzventil 12 mit einer Umfangsnut 14 in seinem Ventilgehäuse 15 versehen, sowie für jedes Brennstoffeinspritzventil 12 ein Verbindungsglied 16 vorge¬ sehen, das einerseits in die Umfangsnut 14 eingreift und anderer¬ seits die Verriegelungselemente 13, 30 übergreift.To hold the fuel injection valves 12, each connecting piece 11 is provided at the free end with two radially projecting locking elements 13, 30 and each fuel injection valve 12 with a circumferential groove 14 in its valve housing 15, and a connecting member 16 is provided for each fuel injection valve 12. which engages in the circumferential groove 14 on the one hand and on the other hand engages over the locking elements 13, 30.
Ein Ausführungsbeispiel eines solchen Verbindungsglieds 16 ist in den Figuren 4 bis 6 dargestellt. Es wird von einer etwa U-förmigen Federklammer 17 gebildet, die aus einem Blechstanzteil gefertigt oder als Kunststoffspritzteil ausgebildet ist. Die Federklammer 17 weist zwei Federschenkel 18, 19 und einen diese verbindenden Feder¬ steg 20 auf. Federschenkel 18, 19 und Federsteg 20 erstrecken sich in FunktionsStellung der Federklammer 17 jeweils etwa parallel zur Mittellinie 41 von Anschlußstutzen 11 und Brennstoffeinspritzventil 12. Von jedem Federschenkel 18, 19 steht ein nach innen gerichteter Lappen 21 bzw. 22 etwa rechtwinklig ab, der mit einer an die Um¬ fangsnut 14 im Ventilgehäuse 15 angepaßten Kontur 23 bzw. 24 in die¬ se eingreift. Wie insbesondere aus Figur 4 und 5 ersichtlich ist, weisen die Federschenkel 18, 19 jeweils eine in Längsrichtung sich erstreckende rechteckförmige Durchbrechung 25 bzw. 26 auf, deren Breite in Richtung der Mittellinie 41 so bemessen ist, daß jedes Verriegelungselement 13, 30 am Anschlußstutzen 11 durch die Durch¬ brechungen 25, 26 hindurchzutreten vermag und somit auf beiden Sei¬ ten von den Federschenkeln 18, 19 übergriffen wird. Die Federschen¬ kel 18, 19 sind in ihrem zum Anschlußstutzen 11 weisenden Längskan¬ tenbereich 43, 44 schräg nach außen abgewinkelt, so daß sie leicht, vorzugsweise maschinell, auf die Anschlußstutzen aufgeschoben werden können. Vom Federsteg 20 erstrecken sich zwei Blechsegmente 27, 28 etwa parallel zur Mittellinie 41. Die Blechsegmente 27, 28 bilden ein Fixierelement in Form eines mittigen längsverlaufenden Schlitzes 29, der zu dem vom Federsteg 20 abgekehrten freien Ende der Blech¬ segmente 27, 28 hin offen ist. Die zum Brennstoffeinspritzventil 12 hin gerichteten rechteckformigen Blechsegmente 27, 28 sind dabei in dem vom Federsteg 20 abgekehrten Endbereich nach innen umgebogen.An embodiment of such a connecting member 16 is shown in Figures 4 to 6. It is formed by an approximately U-shaped spring clip 17, which is made from a stamped sheet metal part or is designed as a plastic injection-molded part. The spring clip 17 has two spring legs 18, 19 and a spring web 20 connecting them. Spring legs 18, 19 and spring bar 20 each extend approximately parallel to in the functional position of the spring clip 17 Center line 41 of connecting piece 11 and fuel injection valve 12. From each spring leg 18, 19, an inwardly directed tab 21 or 22 projects approximately at right angles, which has a contour 23 or 24 adapted to the circumferential groove 14 in the valve housing 15 se intervenes. As can be seen in particular from FIGS. 4 and 5, the spring legs 18, 19 each have a longitudinally extending rectangular opening 25 or 26, the width of which is dimensioned in the direction of the center line 41 such that each locking element 13, 30 on the connecting piece 11 is able to pass through the openings 25, 26 and is thus overlapped on both sides by the spring legs 18, 19. The spring legs 18, 19 are angled obliquely outwards in their longitudinal edge region 43, 44 facing the connecting piece 11, so that they can be pushed onto the connecting piece easily, preferably mechanically. Two sheet metal segments 27, 28 extend approximately parallel to the center line 41 from the spring bar 20. The sheet metal segments 27, 28 form a fixing element in the form of a central longitudinal slot 29, which is open towards the free end of the sheet metal segments 27, 28 facing away from the spring bar 20 is. The rectangular sheet metal segments 27, 28 directed towards the fuel injection valve 12 are bent inward in the end region facing away from the spring web 20.
Korrespondierend mit dem Schlitz 29 ist außen am Ventilgehäuse 15 eines jeden Brennstoffeinspritzventils 12 ein Formelement in Form eines radial vorspringenden Nockens, Steges oder einer Rippe 32 an¬ geordnet. Die einerseits in die Umfangsnut 14 am Ventilgehäuse 15 und andererseits an den Verriegelungselementen 13, 30 des Anschlu߬ stutzens 11 eingerastete Federklammer 17 umgreift mit dem abgewin¬ kelten Ende des Schlitzes 29 den Nocken 32 jeweils in Umfangsrich¬ tung formschlüssig. Damit verriegelt die Federklammer 17 das Brenn¬ stoffeinspritzventil 12 am Anschlußstutzen 11 sowohl in Axialrich¬ tung als auch in Umfangsrichtung, so daß es ohne äußeren Kraftauf¬ wand weder in Axialrichtung abgezogen noch in Umfangsrichtung ver- dreht werden kann. Die Nocken 32 sind dabei an definierter Position angebracht, so daß das als Mehrstrahlventil ausgebildete Brennstoff- einspritzventil 12 nach Verrastung am Anschlußstutzen 11 bezüglich seiner Strahlebenen exakt zur Ansauggeometrie in der Brennkraft¬ maschine positioniert ist.Corresponding to the slot 29, a molded element in the form of a radially projecting cam, web or rib 32 is arranged on the outside of the valve housing 15 of each fuel injection valve 12. The spring clip 17, which is engaged on the one hand in the circumferential groove 14 on the valve housing 15 and on the other hand on the locking elements 13, 30 of the connecting piece 11, engages with the angled end of the slot 29 in a form-fitting manner in the circumferential direction. The spring clip 17 thus locks the fuel injection valve 12 on the connecting piece 11 both in the axial direction and in the circumferential direction, so that it is neither pulled off in the axial direction nor exerted in the circumferential direction without external force. can be rotated. The cams 32 are attached at a defined position, so that the fuel injection valve 12, which is designed as a multi-jet valve, is positioned exactly in relation to the suction geometry in the internal combustion engine with respect to its jet planes after being locked on the connecting piece 11.
Die beiden Verriegelungslemente 13, 30 verlaufen am Umfang des An¬ schlußstutzens 11 mit Abstand zueinander und erstrecken sich nur über einen Teil dieses Urnfanges. Dabei sind die Verriegelungsele¬ mente 13, 30 spiegelbildlich ausgebildet und im wesentlichen symme¬ trisch zu einer Symmetrieebene 47 angeordnet, die durch die Mittel¬ linie 41 und senkrecht zu einer Längsachse 48 des Brennstoffvertei¬ lers 10 verläuft. Jedes Verriegelungselement 13, 30 hat einen recht¬ eckformigen Querschnitt mit in Umfangsrichtung des Anschlußstutzens 11 verlaufenden Längsseiten 50 und senkrecht dazu verlaufenden Schmalseiten 51. Um eine sichere Verriegelung gegen Verdrehen zu er¬ zielen, ist wenigstens eine Schmalseite 51 jedes Verriegelungsele¬ mentes 13, 30 so ausgebildet, daß sie dem Anschlußstutzen 11 abge¬ wandt scharfkantig aus der jeweiligen rechteckf rmigen Durchbrechung 25, 26 der Federklammer 17 herausragt. Dabei liegen die aus der je¬ weiligen Durchbrechung 25, 26 herausragenden Schmalseiten 51 der Verriegelungselemente 13, 30 symmetrisch zur Symmetrieebene 47, also auf der gleichen Seite der Längsachse 48. Jedes Verriegelungselement 13, 30 hat eine Stirnfläche 52, die ausgehend von der aus der Durch¬ brechung 25, 26 herausragenden Schmalseite 51 zunächst parallel und anschließend geneigt zur Symmetrieebene 47 hin bis zur anderen Schmalseite 51 verläuft. Hierdurch wird die Federklammer 17 bei der Montage nicht zu stark aufgeweitet. Jede Durchbrechung 25, 26 um¬ schließt eines der Verriegelungslemente 13, 30 jeweils vollständig.The two locking elements 13, 30 extend at a distance from one another on the circumference of the connecting piece 11 and extend only over a part of this primary area. The locking elements 13, 30 are mirror images and are arranged essentially symmetrically to a plane of symmetry 47 which runs through the center line 41 and perpendicular to a longitudinal axis 48 of the fuel distributor 10. Each locking element 13, 30 has a rectangular cross-section with longitudinal sides 50 running in the circumferential direction of the connecting piece 11 and narrow sides 51 running perpendicularly to it. In order to achieve a secure locking against rotation, at least one narrow side 51 of each locking element 13, 30 is formed so that it faces away from the connecting piece 11 and protrudes sharp-edged from the respective rectangular opening 25, 26 of the spring clip 17. The narrow sides 51 of the locking elements 13, 30 protruding from the respective opening 25, 26 lie symmetrically to the plane of symmetry 47, that is to say on the same side of the longitudinal axis 48. Each locking element 13, 30 has an end face 52 which, starting from the Breakthrough 25, 26 protruding narrow side 51 initially runs parallel and then inclined to the plane of symmetry 47 to the other narrow side 51. As a result, the spring clip 17 is not widened too much during assembly. Each opening 25, 26 completely encloses one of the locking elements 13, 30.
Jedes der Verriegelungselemente 13, 30 kann natürlich auch einen ge¬ eigneten anderen Querschnitt haben, wie z. B. oval, rautenförmig, dreieckig oder ähnliches, wobei dann die Durchbrechungen 25, 26 der Federklammer 17. in entsprechender Weise angepaßt werden. Each of the locking elements 13, 30 can of course also have a suitable other cross-section, such as. B. oval, diamond-shaped, triangular or the like, in which case the openings 25, 26 of the spring clip 17 are adapted in a corresponding manner.

Claims

Ansprüche Expectations
1. Brennstoffeinspritzeinrichtung für Brennkraftmaschinen mit einem BrennstoffVerteiler, der eine Mehrzahl von radial überstehende Ver¬ riegelungselemente tragende Anschlußstutzen aufweist, mit einer Mehrzahl von Brennstoffeinspritzventilen, die mit ihrem einen eine Anschlußöffnung enthaltenden Stirnende in jeweils einen Anschlu߬ stutzen flüssigkeitsdicht eingesetzt sind, und mit einem Verbin¬ dungsglied, das zur Halterung des Brennstoffeinspritzventils am An¬ schlußstutzen einerseits in eine Umfangsnut am Ventilgehäuse ein¬ greift und andererseits das Verriegelungselement mit zwei Durchbre¬ chungen übergreift, wobei zur Sicherstellung einer vorbestimmten Lage des Brennstoffeinspritzventiles bei am Anschlußstutzen gehalte¬ nem Brennstoffeinspritzventil am Ventilgehäuse ein Formelement an definierter Position angebracht ist und das Verbindungsglied ein am Formelement angreifendes Fixierelement trägt, dadurch gekennzeich¬ net, daß an jedem Anschlußstutzen (11) mit Abstand und im wesentli¬ chen symmetrisch zueinander zu einer durch eine Mittellinie (41) des Anschlußstutzens (11) verlaufenden Symmetrieebene (47) zwei Verrie¬ gelungslemente (13, 30) vorgesehen sind, die sich nur teilweise in Umfangsrichtung des Anschlu Stutzens (11) erstrecken, und jedes Ver¬ riegelungselement (13, 30) von einer der Durchbrechungen (25, 26) umschlossen ist.1. Fuel injection device for internal combustion engines with a fuel distributor, which has a plurality of radially protruding locking elements carrying connecting pieces, with a plurality of fuel injection valves, which are inserted with their one end containing a connection opening in a liquid-tight connection, and with a connector ¬ extension element, which on the one hand engages in a circumferential groove on the valve housing for holding the fuel injection valve on the connecting piece and on the other hand engages over the locking element with two openings, wherein a fuel injector is held on the valve housing to ensure a predetermined position of the fuel injection valve when held on the connecting piece Shaped element is attached at a defined position and the connecting member carries a fixing element which engages on the shaped element, characterized in that each connecting piece (11) is provided with Distance and essentially symmetrical to each other to a plane of symmetry (47) extending through a center line (41) of the connecting piece (11), two locking elements (13, 30) are provided, which are only partially in the circumferential direction of the connecting piece (11) extend, and each locking element (13, 30) is surrounded by one of the openings (25, 26).
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jedes Verriegelungselement (13, 30) einen rechteckofmrigen Querschnitt mit in Umfangsrichtung des Anschlußstutzens (11) verlaufenden Längssei¬ ten (50) und senkrecht dazu verlaufenden Schmalseiten (51) hat und jedes der Verriegelungselemente (13, 30) mit wenigstens einer seiner Schmalseiten (51) dem Anschlußstutzen (11) abgewandt aus der jewei¬ ligen Durchbrechung (25, 26) herausragt. 2. Device according to claim 1, characterized in that each locking element (13, 30) has a rectangular cross-section with in the circumferential direction of the connecting piece (11) extending longitudinal sides (50) and perpendicular narrow sides (51) and each of the locking elements ( 13, 30) with at least one of its narrow sides (51) facing away from the connecting piece (11) and protruding from the respective opening (25, 26).
3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die aus der jeweiligen Durchbrechung (25, 26) herausragenden Schmalseiten (51) der Verriegelungselemente (13, 30) symmetrisch zur Symmetrie¬ ebene (47) liegen.3. Device according to claim 2, characterized in that the narrow sides (51) of the locking elements (13, 30) projecting from the respective opening (25, 26) lie symmetrically to the plane of symmetry (47).
4. Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß jedes Verriegelungselement (13, 30) eine Stirnfläche (52) hat, die ausge¬ hend von der aus der Durchbrechung (25, 26) herausragenden Schmal¬ seite (51) zunächst parallel und anschließend geneigt zur Symmetrie¬ ebene (47) hin bis zur anderen Schmalseite (51) verläuft.4. Device according to claim 3, characterized in that each locking element (13, 30) has an end face (52) which, starting from the narrow side (51) projecting from the opening (25, 26), first in parallel and then inclined to the plane of symmetry (47) to the other narrow side (51).
5. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Durchbrechung (25, 26) einen rechteckformigen Querschnitt hat.5. Device according to claim 2, characterized in that the opening (25, 26) has a rectangular cross section.
6. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Formelement am Ventilgehäuse (15) als im wesentlichen in Achsrich¬ tung sich erstreckende, bzw. erstreckender radial vom Ventilgehäuse (15) abstehende bzw. abstehender Steg, Nocken oder Rippe (32) und das Fixierelement am Verbindungsglied (16) als im wesentlichen in Achsrichtung sich erstreckender zu einer Stirnseite des Verbindungs¬ gliedes (16) hin offener Schlitz 29 ausgebildet ist.6. Device according to claim 1, characterized in that the shaped element on the valve housing (15) as a substantially axially extending, or extending radially from the valve housing (15) projecting or projecting web, cam or rib (32) and the fixing element on the connecting member (16) is designed as a slot 29 which extends essentially in the axial direction and is open towards an end face of the connecting member (16).
7. Einrichtung nach einem der Ansprüche 1 bis 6, dadurch gekenn¬ zeichnet, daß das Verbindungsglied (16) als U-förmige Federklammer (17) mit zwei Federschenkeln (18, 19) und einem diese verbindenden, etwa parallel zur Mittellinie (41) von Ventilgehäuse (15) und Brenn¬ stoffeinspritzventil (12) verlaufenden Federsteg (20) ausgebildet ist, daß von jedem Federschenkel (18, 19) ein nach innen gerichteter Lappen (21, 22) etwa rechtwinklig absteht, der mit einer an die Um¬ fangsnut (14) im Ventilgehäuse (15) angepaßten Kontur (23, 24) in diese eingreift, daß die Federschenkel (18, 19) jeweils eine in Längsrichtung sich erstreckende Durchbrechung (25, 26) zum Hindurch¬ ragen der Verriegelungselemente (13, 30) am Anschlußstutzen (11) aufweisen und daß das Fixierelement (29) etwa in Stegmitte sich quer zum Federsteg (20) erstreckt.7. Device according to one of claims 1 to 6, characterized gekenn¬ characterized in that the connecting member (16) as a U-shaped spring clip (17) with two spring legs (18, 19) and one connecting them, approximately parallel to the center line (41) The spring housing (20) of the valve housing (15) and fuel injection valve (12) is designed such that an inwardly directed tab (21, 22) protrudes approximately at right angles from each spring leg (18, 19), which flap is connected to the um¬ catch groove (14) in the valve housing (15) adapted contour (23, 24) engages in this that the spring legs (18, 19) each have a longitudinally extending opening (25, 26) for protruding the locking elements (13, 30 ) on the connector (11) have and that the fixing element (29) extends approximately in the middle of the web transverse to the spring web (20).
8. Einrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Fe¬ derschenkel (18, 19) in ihrem zum Anschlußstutzen (11) weisenden Längskantenbereich schräg nach außen abgewinkelt sind.8. Device according to claim 7, characterized in that the spring legs (18, 19) are angled obliquely outwards in their longitudinal edge region facing the connecting piece (11).
9. Einrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Federklammer (17) aus einem Blechstanzteil gefertigt oder als Kunststoffspritzteil ausgebildet ist. 9. Device according to claim 7 or 8, characterized in that the spring clip (17) made of a stamped sheet metal part or is designed as a plastic injection molded part.
EP91908413A 1990-06-02 1991-04-25 Fuel injection device for internal-combustion engines Expired - Lifetime EP0485545B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4017875A DE4017875C2 (en) 1990-06-02 1990-06-02 Fuel injection device for internal combustion engines
DE4017875 1990-06-02
PCT/DE1991/000343 WO1991019091A1 (en) 1990-06-02 1991-04-25 Fuel injection device for internal-combustion engines

Publications (2)

Publication Number Publication Date
EP0485545A1 true EP0485545A1 (en) 1992-05-20
EP0485545B1 EP0485545B1 (en) 1995-07-12

Family

ID=6407747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91908413A Expired - Lifetime EP0485545B1 (en) 1990-06-02 1991-04-25 Fuel injection device for internal-combustion engines

Country Status (10)

Country Link
US (1) US5167213A (en)
EP (1) EP0485545B1 (en)
JP (1) JP3251284B2 (en)
KR (1) KR0185733B1 (en)
AU (1) AU629478B2 (en)
BR (1) BR9105777A (en)
DE (2) DE4017875C2 (en)
ES (1) ES2075446T3 (en)
RU (1) RU2066393C1 (en)
WO (1) WO1991019091A1 (en)

Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301647A (en) * 1993-06-14 1994-04-12 Siemens Automotive L.P. Fuel injector attachment clip
US5348353A (en) * 1993-12-02 1994-09-20 Chrysler Corporation Positive quick-connect tube locking construction with preassembly retention of spring keeper
DE4413914A1 (en) * 1994-04-21 1995-10-26 Bosch Gmbh Robert Fuel injector
US5501195A (en) * 1994-09-16 1996-03-26 Siemens Automotive Corporation Retainer arrangement for a bottom feed fuel injector
US5724946A (en) * 1996-11-22 1998-03-10 Siemens Automotive Corporation Fuel rail and injector assembly
US5803052A (en) * 1997-06-27 1998-09-08 Siemens Automotive Corporation Spring clip for retaining a fuel injector in a fuel rail cup
US5901688A (en) * 1997-09-12 1999-05-11 Siemens Canada Limited Automotive emission control valve mounting
US5909725A (en) * 1997-09-12 1999-06-08 Siemens Canada Limited Automotive emission control valve retaining clip and mounting method
US6047907A (en) 1997-12-23 2000-04-11 Siemens Automotive Corporation Ball valve fuel injector
US6053149A (en) * 1998-05-28 2000-04-25 Siemens Automotive Corporation Fuel injector clip retention arrangement
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
DE19902186A1 (en) 1999-01-21 2000-07-27 Bosch Gmbh Robert Fuel injection device for internal combustion engine, connector of which has at least one connection projecting radially inwards
US6325049B1 (en) 1999-06-23 2001-12-04 Siemens Automotive Corporation Fuel injector with orientation feature for orienting injector with respect to the manifold or head
US6676044B2 (en) 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
DE20008378U1 (en) 2000-05-10 2001-10-11 Armaturenfabrik Hermann Voss GmbH + Co. KG, 51688 Wipperfürth Snap-in line connector, especially for fuel lines
US6481646B1 (en) * 2000-09-18 2002-11-19 Siemens Automotive Corporation Solenoid actuated fuel injector
US6523756B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a lift set sleeve
US6499668B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6543707B2 (en) 2000-12-29 2003-04-08 Siemens Automotive Corporation Modular fuel injector having a lift set sleeve
US6550690B2 (en) 2000-12-29 2003-04-22 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and dynamic adjustment assembly
US6536681B2 (en) 2000-12-29 2003-03-25 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and O-ring retainer assembly
US6708906B2 (en) * 2000-12-29 2004-03-23 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6533188B1 (en) 2000-12-29 2003-03-18 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and dynamic adjustment assembly
US6499677B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6502770B2 (en) 2000-12-29 2003-01-07 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6698664B2 (en) 2000-12-29 2004-03-02 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and dynamic adjustment assembly
US6547154B2 (en) 2000-12-29 2003-04-15 Siemens Automotive Corporation Modular fuel injector having a terminal connector interconnecting an electromagnetic actuator with a pre-bent electrical terminal
US6655609B2 (en) 2000-12-29 2003-12-02 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and o-ring retainer assembly
US6695232B2 (en) 2000-12-29 2004-02-24 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a lift set sleeve
US6523760B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6769636B2 (en) 2000-12-29 2004-08-03 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and O-ring retainer assembly
US6523761B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a lift set sleeve
US6568609B2 (en) 2000-12-29 2003-05-27 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and o-ring retainer assembly
US6565019B2 (en) 2000-12-29 2003-05-20 Seimens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and O-ring retainer assembly
US6511003B2 (en) 2000-12-29 2003-01-28 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6811091B2 (en) 2000-12-29 2004-11-02 Siemens Automotive Corporation Modular fuel injector having an integral filter and dynamic adjustment assembly
US6607143B2 (en) 2000-12-29 2003-08-19 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a lift set sleeve
US6520421B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having an integral filter and o-ring retainer
US6676043B2 (en) 2001-03-30 2004-01-13 Siemens Automotive Corporation Methods of setting armature lift in a modular fuel injector
US6687997B2 (en) 2001-03-30 2004-02-10 Siemens Automotive Corporation Method of fabricating and testing a modular fuel injector
US6904668B2 (en) 2001-03-30 2005-06-14 Siemens Vdo Automotive Corp. Method of manufacturing a modular fuel injector
US7093362B2 (en) 2001-03-30 2006-08-22 Siemens Vdo Automotive Corporation Method of connecting components of a modular fuel injector
JP2003049748A (en) * 2001-08-08 2003-02-21 Keihin Corp Fuel injection valve connection structure to fuel distribution pipe
DE10145035A1 (en) * 2001-09-13 2003-04-10 Bosch Gmbh Robert fuel injection system
DE10163030B4 (en) * 2001-12-20 2014-10-09 Robert Bosch Gmbh fastening device
JP3846337B2 (en) * 2002-03-15 2006-11-15 株式会社デンソー Injector fixing method and injector fixing device
US6705292B2 (en) 2002-04-02 2004-03-16 Siemens Vdo Automotive Corporation Apparatus and method of connecting a fuel injector and a fuel rail
JP3914488B2 (en) * 2002-05-29 2007-05-16 株式会社オチアイ Piping connection bracket
US6668803B1 (en) * 2002-12-03 2003-12-30 Ford Global Technologies, Llc Fuel injector retention arrangement
DE10256668A1 (en) 2002-12-04 2004-07-29 Robert Bosch Gmbh support element
JP2004353520A (en) * 2003-05-28 2004-12-16 Mitsubishi Electric Corp Fuel-injection system
WO2005083262A1 (en) * 2004-02-26 2005-09-09 Robert Bosch Gmbh Support element
DE102004048401A1 (en) * 2004-10-01 2006-04-06 Robert Bosch Gmbh Downholder for a fuel injector and fuel injector
US7360524B2 (en) * 2004-12-03 2008-04-22 Millenium Industries, Inc. Fuel injector retention clip
US7159570B2 (en) * 2004-12-03 2007-01-09 Millennium Industries Corp. Fuel injector retention clip
EP2068022A1 (en) * 2007-12-07 2009-06-10 Continental Automotive GmbH Coupling arrangement and connection assembly
US7556022B1 (en) 2008-01-04 2009-07-07 Millennium Industries Attachment for fuel injectors in direct injection fuel systems
EP2083167B1 (en) * 2008-01-23 2017-05-10 Continental Automotive GmbH Coupling arrangement and connection assembly
DE102008020886A1 (en) * 2008-04-25 2009-10-29 BSH Bosch und Siemens Hausgeräte GmbH Water-conducting household appliance, in particular dishwashing or washing machine
DE102012208039A1 (en) * 2012-05-14 2013-11-14 Robert Bosch Gmbh Arrangement with a fuel distributor and a plurality of fuel injection valves
US8701632B2 (en) * 2012-07-24 2014-04-22 Ford Global Technologies, Llc Fuel injector mount
DE102013200751A1 (en) * 2013-01-18 2014-07-24 Robert Bosch Gmbh Fuel injection system with a fuel-carrying component, a fuel injection valve and a connecting element
JP2020045854A (en) * 2018-09-20 2020-03-26 株式会社デンソー Fuel injection device
US11174825B2 (en) * 2019-02-11 2021-11-16 Caterpillar Inc. Seal configuration for fuel injector

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146889C2 (en) * 1981-11-26 1986-04-30 Bayerische Motoren Werke AG, 8000 München Fuel injection assembly for internal combustion engines
US4570602A (en) * 1982-08-23 1986-02-18 General Motors Corporation Fuel rail
DE3428597C2 (en) * 1984-08-02 1986-11-27 Bayerische Motoren Werke AG, 8000 München Connection of two pipe sections arranged coaxially one behind the other, in particular an injection nozzle, with the coaxially arranged connection piece of an injection line
DE8613607U1 (en) * 1986-05-20 1986-09-11 Springfix-Befestigungstechnik GmbH, 73084 Salach Spring clip for connecting tubular components
JPS63125171U (en) * 1987-02-09 1988-08-16
DE8713284U1 (en) * 1987-10-02 1987-12-23 Audi AG, 8070 Ingolstadt Device for connecting an injection nozzle to a connection piece in a fuel injection system for internal combustion engines
US4993390A (en) * 1988-05-27 1991-02-19 Mitsubishi Jidosha Kogyo Akbushiki Kaisha Injector positioning device
JP2749839B2 (en) * 1988-10-31 1998-05-13 株式会社デンソー Engine fuel injection device
DE3904479A1 (en) * 1989-02-15 1990-08-16 Bosch Gmbh Robert CONNECTING ELEMENT
DE3918410A1 (en) * 1989-06-06 1990-12-13 Bosch Gmbh Robert FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
US4991557A (en) * 1989-08-21 1991-02-12 Siemens-Bendix Automotive Electronics L.P. Self-attaching electromagnetic fuel injector
US4984548A (en) * 1989-11-20 1991-01-15 Sharon Manufacturing Company Fuel injector retainer clip
GB8926363D0 (en) * 1989-11-22 1990-01-10 Lucas Ind Plc Fuel injection system
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
US5074269A (en) * 1991-04-29 1991-12-24 Chrysler Corporation Anti-rotation fuel injector clip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9119091A1 *

Also Published As

Publication number Publication date
AU629478B2 (en) 1992-10-01
DE4017875C2 (en) 1999-02-04
RU2066393C1 (en) 1996-09-10
US5167213A (en) 1992-12-01
DE4017875A1 (en) 1991-12-05
JP3251284B2 (en) 2002-01-28
KR0185733B1 (en) 1999-03-20
JPH05500258A (en) 1993-01-21
ES2075446T3 (en) 1995-10-01
EP0485545B1 (en) 1995-07-12
DE59105977D1 (en) 1995-08-17
AU7746191A (en) 1991-12-31
WO1991019091A1 (en) 1991-12-12
KR927002465A (en) 1992-09-04
BR9105777A (en) 1992-06-02

Similar Documents

Publication Publication Date Title
EP0485545A1 (en) Fuel injection device for internal-combustion engines.
EP0432229B1 (en) Fuel injection device for internal combustion engines
DE3919231C2 (en) Fuel injection device for internal combustion engines
EP0678669B1 (en) Fuel injection device
DE69813385T2 (en) Quick connector for connecting a fuel drain connection to a fuel injector
EP0080603B1 (en) Fuel injection apparatus for internal-combustion engines
DE112018003921T5 (en) PIPE STRUCTURE FOR AN INJECTION NOZZLE ARRANGEMENT
EP0508074A1 (en) Fuel rail
WO2003038267A1 (en) Fixing device
WO1999013213A1 (en) Fuel injection valve
EP0554419B1 (en) Fuel distributor
DE3739108A1 (en) INTERNAL COMBUSTION ENGINE WITH A FUEL INJECTION SYSTEM
WO1991019900A1 (en) Fuel-injection valve
DE3225180A1 (en) INJECTION VALVE
EP0538247A1 (en) Fuel injection valve.
EP1373709B1 (en) Fuel injection device for internal combustion engines, especially a common rail injector, comprising a return connection
WO1998016736A1 (en) Fuel-injection valve for internal combustion engines
EP0154209A1 (en) Injection valve for injection into the intake pipe of combustion engines
DE10156021A1 (en) fuel injection system
EP1373708B1 (en) Connection by means of a retaining clip of two elements of a fuel supply system of an internal combustion engine that are coaxially disposed one behind the other
EP1066469B1 (en) Fuel injection device
DE69100443T2 (en) Arrangement for positioning, at an angle and at an altitude, of several fuel injection valves of an internal combustion engine.
WO2003040607A1 (en) Fastening device
DE8713284U1 (en) Device for connecting an injection nozzle to a connection piece in a fuel injection system for internal combustion engines
EP1427937B1 (en) Fuel injection system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19911112

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 19940720

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59105977

Country of ref document: DE

Date of ref document: 19950817

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2075446

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950915

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 19960612

REG Reference to a national code

Ref country code: FR

Ref legal event code: D9

Free format text: CORRECTION

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060426

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070425

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070425

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100506

Year of fee payment: 20

Ref country code: ES

Payment date: 20100423

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100426

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100624

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59105977

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110425

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110426