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EP0080603B1 - Fuel injection apparatus for internal-combustion engines - Google Patents

Fuel injection apparatus for internal-combustion engines Download PDF

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Publication number
EP0080603B1
EP0080603B1 EP82110106A EP82110106A EP0080603B1 EP 0080603 B1 EP0080603 B1 EP 0080603B1 EP 82110106 A EP82110106 A EP 82110106A EP 82110106 A EP82110106 A EP 82110106A EP 0080603 B1 EP0080603 B1 EP 0080603B1
Authority
EP
European Patent Office
Prior art keywords
fuel
injection system
injection
distributor
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82110106A
Other languages
German (de)
French (fr)
Other versions
EP0080603A1 (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
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0080603A1 publication Critical patent/EP0080603A1/en
Application granted granted Critical
Publication of EP0080603B1 publication Critical patent/EP0080603B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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

  • the invention relates to a fuel injection system of the type according to the preamble of claim 1.
  • 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 level of the molded parts contains the central axes of the distribution line and the connection 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 usual standard design with an O-ring seal.
  • the distribution line is relatively heavy.
  • FR-A No. 1369539 discloses a distribution line for flow media which has flanges arranged perpendicular to its connections and in which one wall part is flat and the other is hat-shaped in cross-section. This training does not include engaging connecting sockets.
  • FR-A No. 906313 discloses a one-piece distribution line which has a flange on one side perpendicular to the connections and connection sockets projecting into its cavity.
  • 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 ensures a reliable seal between the connection sockets and the inserted connection pieces of the injection nozzles, each carrying a radially acting 0-ring.
  • 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 is formed with connection sockets 10 which extend into the cavity of the distribution line 1.
  • 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.
  • the spring clip 2 securing 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 4 and the lower part 5.
  • the spring clips 2 are - in the axial direction of the connecting sockets 10 seen - U-shaped.
  • the web 15 and the legs 16 lie essentially in one plane.
  • the legs 16 have each other on their inner edges Opposing circular arc-shaped concave sections 17, with which they rest on the groove base after snapping 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 towards 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 also easy to shape and manufacture.
  • the distribution line 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)

Description

Die Erfindung bezieht sich auf eine Kraftstoffeinspritzanlage 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 Kraftstoffeinspritzanlage dieser Bauart (DE-A Nr. 2833659) 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 Kraftstoffeinspritzanlage, da nicht nur das Innenteil der Verteilerleitung gesondert gefertigt werden müss, 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-A No. 2833659) 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 level of the molded parts contains the central axes of the distribution line and the connection 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 usual standard design with an O-ring seal. In addition, the distribution line is relatively heavy.

Bei einer anderen bekannten Kraftstoffeinspritzanlage (DE-U Nr. 7918697) wird als Verteilerleitung ein an den Enden verschlossenes Vierkantrohr verwendet, das in Bohrungen eingelötete Anschlussbuchsen aufweist. Die mittels radial wirkender O-Ringe 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-U No. 7918697), 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 sealed into the connecting sockets by means of radially acting O-rings, are axially fixed by spring clips. Here too, 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.

Durch die FR-A Nr. 1369539 ist eine Verteilerleitung für Strömungsmedien bekannt, die senkrecht zu ihren Anschlüssen angeordnete Flansche aufweist und bei der ein Wandteil eben und das andere mit hutförmigem Querschnitt ausgebildet sind. In Anschlussbuchsen eingreifende Anschlussstutzen enthält diese Ausbildung nicht.FR-A No. 1369539 discloses a distribution line for flow media which has flanges arranged perpendicular to its connections and in which one wall part is flat and the other is hat-shaped in cross-section. This training does not include engaging connecting sockets.

Durch die FR-A Nr. 906313 ist schliesslich eine einteilige Verteilerleitung bekannt, die einseitig einen Flansch senkrecht zu den Anschlüssen und in ihren Hohlraum hineinragend befestigte Anschlussbuchsen aufweist.Finally, FR-A No. 906313 discloses a one-piece distribution line which has a flange on one side perpendicular to the connections and connection sockets projecting into its cavity.

Der Erfindung liegt die Aufgabe zugrunde, eine Kraftstoffeinspritzanlage 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.According to the invention, 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 0-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. The fact that the connection sockets are completely molded onto the one molded part ensures a reliable seal between the connection sockets and the inserted connection pieces of the injection nozzles, each carrying a radially acting 0-ring.

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 besonders 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 attachment of the injection nozzles, which in connection with the features of claims 3 and 4 has a particularly small space requirement.

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

  • Fig. 1 eine teilweise in Längsrichtung geschnittene Verteilerleitung einer Kraftstoffeinspritzanlage 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 Fig. 1 und 2.
In the drawing, an embodiment of the invention is shown. Show it:
  • 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 according to FIG. 1 in the region of a connection socket in which an injection valve is fastened, and
  • 3 shows a spring clip for fastening an injection nozzle to the distributor line according to FIGS. 1 and 2.

Eine Kraftstoffeinspritzanlagefür 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 is formed with connection 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 0-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 4 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. 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.The spring clip 2 securing 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 4 and the lower part 5. The spring clips 2 are - in the axial direction of the connecting sockets 10 seen - U-shaped. The web 15 and the legs 16 lie essentially in one plane. The legs 16 have each other on their inner edges Opposing circular arc-shaped concave sections 17, with which they rest on the groove base after snapping 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 towards 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. 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 Verteilerleitung 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 also easy to shape and manufacture. The distribution line 1 or the spring clip 2 can also be made of fuel and temperature resistant plastic.

Claims (6)

1. A fuel-injection system for internal combustion engines,
- with a distributor passage (1),
- which comprises two shaped parts (top part 4, lower part 5), interconnected in a longitudinal plane by means of flanges (6, 9), and
- to which parts a plurality of injection valves (3) are connected by means of their ports inserted in connecting sleeves (10),

characterized in that
- the flanges (6, 9) are formed integrally with the two shaped parts (top part 4, lower part 5) of the distributor passage (1) and transversely of the central axes of the injection valves (3), and in that
- the connecting sleeves (10) are formed integrally with one of the two shaped parts (lower part 5) in the direction of these central axes.
2. A fuel-injection system according to Claim 1, characterized in that at least one shaped part (top part 4) is in the form of a dish with a top-hat cross-section and has an end wall (4') at each extremity of the distributor pipe (1).
3. A fuel-injection system according to Claim 1 or 2, characterized in that the connecting sleeves (10) or ports extend into the cavity of the distributor passage (1).
4. A fuel-injection system according to any one of the preceding claims, characterized in that one shaped part (lower part 5) has a flat basic shape, and that the connecting sleeves (10) are formed integrally with this shaped part (lower part 5).
5. A fuel-injection system according to any one of the preceding claims, characterized in that the injection valves (3) are axially secured by means of spring clips (2), which bear against radial faces of the injection valves (3) and against the flanges (6, 9) which they straddle.
6. A fuel -injection system according to Claim 5, characterized in that
- the spring clips (2) have a substantially flat U-shape,
- the limbs (16) of which each co-operate with and latch on to an injection nozzle (3), and in that
- a portion (18), projecting at right angles to the planes of the U-shape, is integrally formed with each limb (16) at the outside edge thereof,
- which portion has an inwardly inclined tab (19) which bears against the flange (6) of the distributor pipe (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
DE3146889A DE3146889C2 (en) 1981-11-26 1981-11-26 Fuel injection assembly for internal combustion engines
DE3146889 1981-11-26

Publications (2)

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

Family

ID=6147260

Family Applications (1)

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

Country Status (4)

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

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DE3919231A1 (en) * 1989-06-13 1990-12-20 Bosch Gmbh Robert FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES

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US4519368A (en) * 1982-05-04 1985-05-28 Sharon Manufacturing Company Fuel injection rail assembly
JPS59223206A (en) * 1983-05-30 1984-12-15 Toyo Sutoufuaa Chem:Kk Manufacture of spherical anhydrous calcium secondary phosphate
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US4649884A (en) * 1986-03-05 1987-03-17 Walbro Corporation Fuel rail for internal combustion engines
US4798187A (en) * 1986-11-07 1989-01-17 Sharon Manufacturing Company Low profile fuel injection rail
US4751904A (en) * 1986-11-07 1988-06-21 Sharon Manufacturing Company Low profile fuel injection rail
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JPS63140167U (en) * 1987-03-06 1988-09-14
US4909220A (en) * 1987-08-03 1990-03-20 General Motors Corporation Fuel injection
DE3730571C2 (en) * 1987-09-11 1998-07-02 Bosch Gmbh Robert Device for mounting, fuel supply and electrical contacting of electromagnetically actuated fuel injection valves
US4993390A (en) * 1988-05-27 1991-02-19 Mitsubishi Jidosha Kogyo Akbushiki Kaisha Injector positioning device
DE3918410A1 (en) * 1989-06-06 1990-12-13 Bosch Gmbh Robert FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
JPH0754612Y2 (en) * 1989-06-06 1995-12-18 臼井国際産業株式会社 Fuel delivery pipe
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
JP2789481B2 (en) * 1989-12-08 1998-08-20 臼井国際産業株式会社 Fuel delivery pipe
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JPS5893957A (en) 1983-06-03
DE3146889A1 (en) 1983-06-01
US4474160A (en) 1984-10-02
DE3146889C2 (en) 1986-04-30
JPH0159429B2 (en) 1989-12-18
DE3262237D1 (en) 1985-03-21
EP0080603A1 (en) 1983-06-08

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