EP0080603A1 - Fuel injection apparatus for internal-combustion engines - Google Patents

Fuel injection apparatus for internal-combustion engines Download PDF

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Publication number
EP0080603A1
EP0080603A1 EP82110106A EP82110106A EP0080603A1 EP 0080603 A1 EP0080603 A1 EP 0080603A1 EP 82110106 A EP82110106 A EP 82110106A EP 82110106 A EP82110106 A EP 82110106A EP 0080603 A1 EP0080603 A1 EP 0080603A1
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EP
European Patent Office
Prior art keywords
fuel injection
injection system
distributor line
molded
flanges
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
EP82110106A
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German (de)
French (fr)
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EP0080603B1 (en
Inventor
Jurij Gartner
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP0080603A1 publication Critical patent/EP0080603A1/en
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Publication of EP0080603B1 publication Critical patent/EP0080603B1/en
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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
    • 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
    • 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
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, 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
    • F02M2200/80—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

Definitions

  • a known fuel injection system of this type contains a distributor line with an inner part made of an elastomer with molded connection sockets, which is enclosed by the two molded parts.
  • the flange plane of the molded parts contains the central axes of the distributor line and the connecting sockets, so that the molded parts essentially represent mirror-like half-shells.
  • This structure of the distributor line leads to a complex and expensive fuel injection system, since not only does the inner part of the distributor line have to be manufactured separately, but also the design of the connecting pieces of the injection valves differs from the standard series design with an O-ring seal.
  • the distribution line is relatively heavy.
  • the invention has for its object to provide a fuel injection system of the type according to the preamble of claim 1, which is simple and inexpensive to manufacture and has a low weight.
  • connection sockets are completely molded onto the one molded part, a reliable seal between the connection sockets and the inserted, each carrying a radially acting O-ring connecting piece of the injection nozzles is guaranteed.
  • a fuel injection system for internal combustion engines comprises a distributor line 1, to which two injection valves 3 are fastened by means of spring clips.
  • the distribution line 1 consists of 2 molded parts, an upper part 4 and a lower part 5. Both molded parts are made by deep drawing from sheet metal.
  • the upper part 4 is trough-shaped and has a hat profile in cross section. The ends of the upper part 4 are each closed by an end wall 4 '.
  • a flange 6 is formed by the edges of the hat profile.
  • an inlet connection 7 and a return connection 8 are fastened by upsetting or brazing.
  • the inlet connector 7 and the return connector 8 can also be formed by deep drawing.
  • the lower part 5 has a flange 9 and is connected to the flange 6 of the upper part 4 by brazing.
  • the lower part 5 are molded sockets 10 which extend into the cavity of the distribution line 1.
  • the spring clip 2 fastening the injection valve 3 to the distributor line 1 is, on the one hand, radially resiliently latched into an annular groove 14 of the injection valve 3 and, on the other hand, engages behind the flanges 6 and 9 of the upper part 5 and the lower part 5.
  • the spring clips 2 are seen in the axial direction of the connecting sockets 10 U-shaped.
  • the web 15 and the legs 16 lie essentially in one plane.
  • the legs 16 have, on their inner edges, opposing circular arc-shaped concave sections 17, by means of which they rest on the groove base after they have snapped into the annular groove 14 of the injection valve 3.
  • the legs 16 lie flat against the radially extending side walls of the annular groove 14.
  • Sections 18 are formed on the outer edges of the legs 16 and extend perpendicular to the common plane of the web 15 and the legs 16. Each section 18 has a tab 19 which extends through to the axis of the connecting socket 10 and whose free edge 20 is supported on the flange 6.
  • This configuration of the distributor line 1 and the spring clips 2 enables the injection valves 3 to be installed quickly and easily.
  • the spring clip 2 can first be snapped into the annular groove 14 of the injection valve 3 or locked with the flanges 6 and 9 of the distributor line.
  • the spring clips 2 can be moved parallel to the flanges 6 and 9, whereby they disengage from the annular grooves 14. After the insertion of new injection valves 3, the spring clips 2 are simply pushed back into their original position.
  • the invention provides an easy-to-manufacture, light distributor line for a fuel injection system, in which the spring clips 2 enable the injection valves 3 to be installed and removed quickly.
  • the spring clip 2 itself is over it easy to shape and manufacture.
  • the distributor power 1 or the spring clip 2 can also be made of fuel and temperature-resistant plastic.

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  • 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)

Abstract

Eine Kraftstoff-Einspritzanlage für Brennkraftmaschinen enthält eine Verteilerleitung (1) aus zwei in einer Längsebene mittels Flanschen (6, 9) miteinander verbundenen Formteilen (Oberteil 4, Unterteil 5). An die Verteilerleitung (1) sind mittels Paaren von Anschlußbuchsen (10) und -stutzen (11) mehrere Einspritzventile (3) angeschlossen. Die Flansche (6, 9) sind beiden Formteilen (Oberteil 4, Unterteil 5) der Verteilerleitung (1) quer zu den Mittelachsen der Einspritzventile (3) und die Anschlußbuchsen (10) sind einem der beiden Formteile (Unterteil 5) in Richtung dieser Mittelachsen angeformt.A fuel injection system for internal combustion engines contains a distributor line (1) consisting of two molded parts (upper part 4, lower part 5) connected to one another in a longitudinal plane by means of flanges (6, 9). Several injection valves (3) are connected to the distributor line (1) by means of pairs of connection sockets (10) and connecting pieces (11). The flanges (6, 9) are two molded parts (upper part 4, lower part 5) of the distributor line (1) transversely to the central axes of the injection valves (3) and the connecting sockets (10) are one of the two molded parts (lower part 5) in the direction of these central axes molded.

Description

Die Erfindung bezieht sich auf eine Kraftstoff-Einspritzanlage der Bauart nach dem Oberbegriff des Anspruches 1.The invention relates to a fuel injection system of the type according to the preamble of claim 1.

Eine bekannte Kraftstoff-Einspritzanlage dieser Bauart (DE-OS 28 33 659) enthält eine Verteilerleitung mit einem Innenteil aus einem Elastomer mit angeformten Anschlußbuchsen, das von den beiden Formteilen umschlossen ist. Die Flanschebene der Formteile enthält die Mittelachsen der Verteilerleitung und der Anschlußbuchsen, so daß die Formteile im wesentlichen spiegelgleiche Halbschalen darstellen. Dieser Aufbau der Verteilerleitung führt zu einer aufwendigen und teuren Kraftstoff-Einspritzanlage, da nicht nur das Innenteil der Verteilerleitung gesondert gefertigt werden muß, sondern auch die Ausbildung der Anschlußstutzen der Einspritzventile von der üblichen serienmäßigen Ausbildung mit O-Ringabdichtung abweicht. Außerdem ist die Verteilerleitung relativ schwer.A known fuel injection system of this type (DE-OS 28 33 659) contains a distributor line with an inner part made of an elastomer with molded connection sockets, which is enclosed by the two molded parts. The flange plane of the molded parts contains the central axes of the distributor line and the connecting sockets, so that the molded parts essentially represent mirror-like half-shells. This structure of the distributor line leads to a complex and expensive fuel injection system, since not only does the inner part of the distributor line have to be manufactured separately, but also the design of the connecting pieces of the injection valves differs from the standard series design with an O-ring seal. In addition, the distribution line is relatively heavy.

Bei einer anderen bekannten Kraftstoff-Einspritzanlage (DE-GM 79 18 697) wird als Verteilerleitung ein an den Enden verschlossenes Vierkantrohr verwendet, das in Bohrungen eingelötete Anschlußbuchsen aufweist. Die mittels radial wirkenden O-Ringen auf ihren Anschlußstutzen dichtend in die Anschlußbuchsen eingesteckten Einspritzdüsen werden durch Federklammern axial festgelegt. Auch hier ist die Fertigung der Verteilerleitung aufwendig und teuer, da die Anschlußbuchsen gesondert gefertigt und in Löcher in der Verteilerleitung eingelötet werden müssen.In another known fuel injection system (DE-GM 79 18 697), a square tube which is closed at the ends and has connection sockets soldered into bores is used as the distributor line. The injection nozzles, which are inserted into the connecting bushings in a sealing manner by means of radially acting O-rings, are axially fixed by spring clips. Also here the manufacture of the distribution line is complex and expensive, since the connection sockets have to be manufactured separately and soldered into holes in the distribution line.

Der Erfindung liegt die Aufgabe zugrunde, eine Kraftstoff-Einspritzanlage der Bauart nach dem Oberbegriff des Anspruches 1 zu schaffen, die einfach und kostengünstig herstellbar ist und ein geringes Gewicht aufweist.The invention has for its object to provide a fuel injection system of the type according to the preamble of claim 1, which is simple and inexpensive to manufacture and has a low weight.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.This object is achieved by the characterizing features of claim 1.

Der Aufbau der Verteilerleitung aus zwei Formteilen vereinfacht die Fertigung, da nur diese beiden Teile einzeln gefertigt und miteinander verbunden werden müssen. Dadurch, daß die Anschlußbuchsen jeweils vollständig an das eine Formteil angeformt sind, ist eine zuverlässige Abdichtung zwischen den Anschlußbuchsen und den eingesteckten, jeweils einen radial wirkenden O-Ring tragenden Anschlußstutzen der Einspritzdüsen gewährleistet.The construction of the distribution line from two molded parts simplifies production, since only these two parts have to be manufactured individually and connected to one another. Characterized in that the connection sockets are completely molded onto the one molded part, a reliable seal between the connection sockets and the inserted, each carrying a radially acting O-ring connecting piece of the injection nozzles is guaranteed.

Weiterbildungen der Erfindung sind in den Ansprüchen 2 bis 6 gekennzeichnet. Durch die Merkmale des Anspruches 2 erübrigt sich ein gesondertes Verschließen der Verteilerleitung an den Enden. Außerdem ergibt sich die vorteilhafte Möglichkeit, nur eines der Teile zu verformen und das andere als flaches Teil auszubilden. Die Merkmale des Anspruches 3 ergeben eine kompakte, platzsparende Ausbildung. Eine vorteilhafte Aufteilung der Blechverformungsprobleme wird durch die Merkmale des Anspruches 4 erreicht. Die Merkmale der Ansprüche 5 und 6 ergeben eine kompakte, zuverlässige und leicht zu handhabende Befestigung der Einspritzdüsen, die in Verbindung mit den Merkmalen der Ansprüche 3 und 4 einen besonder.s geringen Raumbedarf aufweist.Developments of the invention are characterized in claims 2 to 6. Due to the features of claim 2, a separate closing of the distributor line at the ends is unnecessary. In addition, there is the advantageous possibility of deforming only one of the parts and forming the other as a flat part. The features of claim 3 result in a compact, space-saving design. An advantageous division of the sheet metal deformation problems is achieved by the features of claim 4. The features of claims 5 and 6 result in a compact, reliable and easy-to-use fastening of the injection nozzles, which, in conjunction with the features of claims 3 and 4, has a particularly small space requirement.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

  • Fig. 1 eine teilweise in Längsrichtung geschnittene Verteilerleitung einer Kraftstoff-Einspritzanlage für Brennkraftmaschinen,
  • Fig. 2 einen Querschnitt der Verteilerleitung nach Fig. 1 im Bereich einer Anschlußbuchse, in der ein Einspritzventil befestigt ist, und
  • Fig. 3 eine Federklammer zum Befestigen einer Einspritzdüse an der Verteilerleitung nach den Figuren 1 und 2.
In the drawing is an embodiment of the Erfin shown. It shows:
  • 1 is a partially cut longitudinal distribution line of a fuel injection system for internal combustion engines,
  • Fig. 2 shows a cross section of the distributor line of FIG. 1 in the region of a connection socket in which an injection valve is attached, and
  • 3 shows a spring clip for fastening an injection nozzle to the distributor line according to FIGS. 1 and 2.

Eine Kraftstoff-Einspritzanlage für Brennkraftmaschinen umfaßt eine Verteilerleitung 1, an der mittels Federklammern 2 Einspritzventile 3 befestigt sind. Die Verteilerleitung 1 besteht aus 2 Formteilen, einem Oberteil 4 und einem Unterteil 5. Beide Formteile sind durch Tiefziehen aus Blech hergestellt. Das Oberteil 4 ist wannenförmig und hat im Querschnitt ein Hutprofil. Die Enden des Oberteiles 4 sind durch je eine Abschlußwand 4' verschlossen. Durch die Ränder des Hutprofiles wird ein Flansch 6 gebildet. In der Nähe der Enden des Oberteiles 4 sind ein Zulaufstutzen 7 und ein Rücklaufstutzen 8 durch Stauchen oder Hartlöten befestigt. Der Zulaufstutzen 7 und der Rücklaufstutzen 8 können auch durch Tiefziehen angeformt sein.A fuel injection system for internal combustion engines comprises a distributor line 1, to which two injection valves 3 are fastened by means of spring clips. The distribution line 1 consists of 2 molded parts, an upper part 4 and a lower part 5. Both molded parts are made by deep drawing from sheet metal. The upper part 4 is trough-shaped and has a hat profile in cross section. The ends of the upper part 4 are each closed by an end wall 4 '. A flange 6 is formed by the edges of the hat profile. In the vicinity of the ends of the upper part 4, an inlet connection 7 and a return connection 8 are fastened by upsetting or brazing. The inlet connector 7 and the return connector 8 can also be formed by deep drawing.

Das Unterteil 5 weist einen Flansch 9 auf und ist mit dem Flansch 6 des Oberteiles 4 durch Hartlöten verbunden. Dem Unterteil 5 sind Anschlußbuchsen 10 angeformt, die sich in den Hohlraum der Verteilerleitung 1 erstrecken.The lower part 5 has a flange 9 and is connected to the flange 6 of the upper part 4 by brazing. The lower part 5 are molded sockets 10 which extend into the cavity of the distribution line 1.

Die Einspritzdüsen 3 sind mit ihren Anschlußstutzen 11 jeweils in eine der Anschlußbuchsen 10 eingesetzt, wobei ein in eine Umfangsnut 12 des Anschlußstutzens 11 eingelegter O-Ring 13 eine radiale Abdichtung zwischen Anschlußstutzen 11 und Anschlußbuchse 10 bewirkt.The injection nozzles 3 are each inserted with their connecting pieces 11 into one of the connecting sockets 10, an O-ring 13 inserted into a circumferential groove 12 of the connecting piece 11 providing a radial seal between the connecting piece 11 and the connecting socket 10.

Die das Einspritzventil 3 an der Verteilerleitung 1 befestigende Federklammer 2 ist einerseits radial federnd in eine Ringnut 14 des Einspritzventiles 3 eingerastet und hintergreift andererseits die Flansche 6 und 9 des Oberteiles 5 bzw. des Unterteiles 5. Die Federklammern 2 sind in Achsrichtung der Anschlußbuchsen 10 gesehen U-förmig ausgebildet. Der Steg 15 und die Schenkel 16 liegen im wesentlichen in einer Ebene. Die Schenkel 16 weisen an ihren Innenkanten einander gegenüberliegende kreisbogenförmige konkave Abschnitte 17 auf, mit denen sie nach dem Einrasten in die Ringnut 14 des Einspritzventiles 3 am Nutgrund anliegen. Die Schenkel 16 liegen flächig an den sich radial erstreckenden Seitenwänden der Ringnut 14 an. An die Außenkanten der Schenkel 16 sind Abschnitte 18 angeformt, die sich senkrecht zur gemeinsamen Ebene des Steges 15 und der Schenkel 16 erstrecken. Jeder Abschnitt 18 weist einen zur Achse der'Anschlußbuchse 10 hin durchgestellten Lappen 19 auf, dessen freie Kante 20 sich am Flansch 6 abstützt.The spring clip 2 fastening the injection valve 3 to the distributor line 1 is, on the one hand, radially resiliently latched into an annular groove 14 of the injection valve 3 and, on the other hand, engages behind the flanges 6 and 9 of the upper part 5 and the lower part 5. The spring clips 2 are seen in the axial direction of the connecting sockets 10 U-shaped. The web 15 and the legs 16 lie essentially in one plane. The legs 16 have, on their inner edges, opposing circular arc-shaped concave sections 17, by means of which they rest on the groove base after they have snapped into the annular groove 14 of the injection valve 3. The legs 16 lie flat against the radially extending side walls of the annular groove 14. Sections 18 are formed on the outer edges of the legs 16 and extend perpendicular to the common plane of the web 15 and the legs 16. Each section 18 has a tab 19 which extends through to the axis of the connecting socket 10 and whose free edge 20 is supported on the flange 6.

Durch diese Ausbildung der Verteilerleitung 1 und der Federklammern 2 ist eine einfache und schnelle Montage der Einspritzventile 3 möglich. Die Federklammer 2 kann dabei zuerst in die Ringnut 14 des Einspritzventiles 3 eingerastet oder mit den Flanschen 6 und 9 der Verteilerleitung verrastet werden. Für einen Austausch der Einspritzventile 3 können die Federklammern 2 parallel zu den Flanschen 6 und 9 verschoben werden, wobei sie aus den Ringnuten 14 ausrasten. Nach dem Einsetzen neuer Einspritzventile 3 werden die Federklammern 2 lediglich wieder in ihre ursprüngliche Lage zurückgeschoben.This configuration of the distributor line 1 and the spring clips 2 enables the injection valves 3 to be installed quickly and easily. The spring clip 2 can first be snapped into the annular groove 14 of the injection valve 3 or locked with the flanges 6 and 9 of the distributor line. For an exchange of the injection valves 3, the spring clips 2 can be moved parallel to the flanges 6 and 9, whereby they disengage from the annular grooves 14. After the insertion of new injection valves 3, the spring clips 2 are simply pushed back into their original position.

Durch die Erfindung wird eine einfach zu fertigende, leichte Verteilerleitung für eine Kraftstoffeinspritzanlage geschaffen, bei der durch die Federklammern 2 ein schneller Ein- und Ausbau der Einspritzventile 3 ermöglicht ist. Die Federklammer 2 selbst ist darüber hinaus einfach geformt und zu fertigen. Die Verteilerleistung 1 bzw. die Federklammer 2 kann auch aus kraftstoff-und temperaturbeständigem Kunststoff gefertigt sein.The invention provides an easy-to-manufacture, light distributor line for a fuel injection system, in which the spring clips 2 enable the injection valves 3 to be installed and removed quickly. The spring clip 2 itself is over it easy to shape and manufacture. The distributor power 1 or the spring clip 2 can also be made of fuel and temperature-resistant plastic.

Claims (6)

1. Kraftstoff-Einspritzanlage fürfrennkraftmaschinen, - mit einer Verteilerleitung (1), - die zwei in einer Längsebene mittels Flanschen (6, 9) verbundene Formteile (Oberteil 4, Unterteil 5) aufweist, und - an der mittels Paaren von Anschlußbuchsen (10) und -stutzen mehrere Einspritzventile (3) angeschlossen sind,
dadurch gekennzeichnet, - daß die Flansche (6, 9) an beiden Formteilen (Oberteil 4, Unterteil 5) der Verteilerleitung (1) quer zu den Mittelachsen der Einspritzventile (3) und - die Anschlußbuchsen (10) bzw. -stutzen einem der beiden Formteile (Unterteil 5) in Richtung dieser Mittelachsen angeformt sind. 1. fuel injection system for internal combustion engines, - with a distribution line (1), - Which has two molded parts (upper part 4, lower part 5) connected in a longitudinal plane by means of flanges (6, 9), and - to which several injection valves (3) are connected by means of pairs of connecting sockets (10) and connecting pieces,
characterized, - That the flanges (6, 9) on both molded parts (upper part 4, lower part 5) of the distributor line (1) transversely to the central axes of the injection valves (3) and - The connecting sockets (10) or connecting pieces of one of the two molded parts (lower part 5) are formed in the direction of these central axes. 2. Kraftstoff-Einspritzanlage nach Anspruch 1, dadurch gekennzeichnet, - daß wenigstens ein Formteil (Oberteil 4) mit einem hutprofilförmigen Querschnitt und je einer Abschlußwand (4') an beiden Enden der Verteilerleitung (1) wannenförmig ausgebildet ist. 2. Fuel injection system according to claim 1, characterized in that - That at least one molded part (upper part 4) with a hat-shaped cross-section and one end wall (4 ') is trough-shaped at both ends of the distributor line (1). 3. Kraftstoff-Einspritzanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Anschlußbuchsen (10) bzw. -stutzen sich in den Hohlraum der Verteilerleitung (1) erstrecken.3. Fuel injection system according to claim 1 or 2, characterized in that the connecting sockets (10) or connecting pieces extend into the cavity of the distributor line (1). 4. Kraftstoff-Einspritzanlage nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, - daß ein Formteil (Unterteil 5) eine ebene Grundform aufweist, und - daß diesem Formteil (Unterteil 5) die Anschlußbuchsen (10) bzw. -stutzen angeformt sind. 4. Fuel injection system according to one of the preceding claims,
characterized, - That a molded part (lower part 5) has a flat basic shape, and - That this molded part (lower part 5), the connecting sockets (10) or connecting pieces are formed. 5. Kraftstoff-Einspritzanlage nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, - daß die Einspritzventile (3) mittels Federklammern (2) axial festgelegt sind, - die sich an Radialflächen der Einspritzventile (3) und an den Flanschen (6, 9) diese übergreifend abstützen. 5. Fuel injection system according to one of the preceding claims,
characterized, - That the injection valves (3) are axially fixed by means of spring clips (2), - Which are supported on radial surfaces of the injection valves (3) and on the flanges (6, 9). 6. Kraftstoff-Einspritzanlage nach Anspruch 5, dadurch gekennzeichnet, - daß die Federklammern (2) im wesentlichen eine ebene U-Form aufweisen, - deren Schenkel (16) mit jeweils einer Einspritzdüse (3) rastend zusammenwirken, und - daß den Schenkeln (16) an den Außenkanten je ein axialer Abschnitt (18) angeformt ist, - der einen nach innen durchgestellten, sich am Flansch (6) der Verteilerleitung (1) abstützenden Lappen (19) aufweist. 6. Fuel injection system according to claim 5, characterized in that - That the spring clips (2) have a substantially flat U-shape, - The legs (16) each with an injection nozzle (3) cooperate with each other, and - That the legs (16) are each formed on the outer edges of an axial section (18), - Which has an inwardly extending tab (19) which is supported on the flange (6) of the distributor line (1).
EP82110106A 1981-11-26 1982-11-03 Fuel injection apparatus for internal-combustion engines Expired EP0080603B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3146889 1981-11-26
DE3146889A DE3146889C2 (en) 1981-11-26 1981-11-26 Fuel injection assembly for internal combustion engines

Publications (2)

Publication Number Publication Date
EP0080603A1 true EP0080603A1 (en) 1983-06-08
EP0080603B1 EP0080603B1 (en) 1985-02-06

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Application Number Title Priority Date Filing Date
EP82110106A Expired EP0080603B1 (en) 1981-11-26 1982-11-03 Fuel injection apparatus for internal-combustion engines

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US (1) US4474160A (en)
EP (1) EP0080603B1 (en)
JP (1) JPS5893957A (en)
DE (2) DE3146889C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235394A1 (en) * 1986-03-05 1987-09-09 WALBRO CORPORATION (Corporation of Delaware) Fuel rail for internal combustion engines
FR2606458A1 (en) * 1986-11-07 1988-05-13 Sharon Mfg Co TUBULAR ARRANGEMENT FOR FUEL INJECTION IN AN EXPLOSION ENGINE
EP0678669A1 (en) * 1994-04-21 1995-10-25 Robert Bosch Gmbh Fuel injection device
EP3101263A1 (en) * 2015-06-03 2016-12-07 Hörnlein Umformtechnik GmbH Fuel distributor pipe and component of a motor vehicle

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FR2606458A1 (en) * 1986-11-07 1988-05-13 Sharon Mfg Co TUBULAR ARRANGEMENT FOR FUEL INJECTION IN AN EXPLOSION ENGINE
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Also Published As

Publication number Publication date
JPH0159429B2 (en) 1989-12-18
EP0080603B1 (en) 1985-02-06
DE3262237D1 (en) 1985-03-21
US4474160A (en) 1984-10-02
JPS5893957A (en) 1983-06-03
DE3146889A1 (en) 1983-06-01
DE3146889C2 (en) 1986-04-30

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