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EP1092864B1 - Holder for an injector - Google Patents

Holder for an injector Download PDF

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Publication number
EP1092864B1
EP1092864B1 EP00119246A EP00119246A EP1092864B1 EP 1092864 B1 EP1092864 B1 EP 1092864B1 EP 00119246 A EP00119246 A EP 00119246A EP 00119246 A EP00119246 A EP 00119246A EP 1092864 B1 EP1092864 B1 EP 1092864B1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal
intake system
engine according
injection nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00119246A
Other languages
German (de)
French (fr)
Other versions
EP1092864A2 (en
EP1092864A3 (en
Inventor
Stephan Müller
Frank Ickinger
Michael Paul
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1092864A2 publication Critical patent/EP1092864A2/en
Publication of EP1092864A3 publication Critical patent/EP1092864A3/en
Application granted granted Critical
Publication of EP1092864B1 publication Critical patent/EP1092864B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10288—Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses

Definitions

  • the invention relates to a holder for an injection nozzle, in particular for Internal combustion engines with direct injection, according to the preamble of Patent claim 1.
  • a known injection nozzle DE 44 18 001 A1 is between an arcuate Suction tube and a flange connected to a cylinder head.
  • the injector is connected as a preassembled unit with the cylinder head.
  • the object of the invention is to provide a holder for an injection nozzle, the on the one hand set system-tight even at relatively high injection pressures and for other is easy to assemble.
  • the advantages achieved by the invention are to be seen in that the Clamping device with defined and acting in the axial direction biasing force the Injection holds in position, whereby the - especially with direct injection for Internal combustion engines of the Otto type - occurring system pressure taken into account and special glands per injector can be omitted. Also provides the insectshülse that always occurring manufacturing tolerances for Connection function of the injector are harmless. With the metallic adapter sleeve, which is easy to produce, thanks also to the bellows a targeted towards Cylinder head directed biasing force can be accomplished.
  • FIGS. 1 and 2 are views of the invention.
  • the embodiment shown in FIGS. 1 and 2 is thereby not the subject of the invention, but merely serves to clarify the technical Facts.
  • a non-illustrated, for example multi-cylinder internal combustion engine 1 of Otto type comprises a cylinder head 2 and a suction system 3.
  • the suction system 3 is connected to the cylinder head 2, for which purpose the cylinder head 2 with a first Support level 4 and the suction system 3 is provided with a second support level 5.
  • the intake system 3 is provided via a provided with a throttle valve 6 channel. 7 a fresh air supplied to a combustion chamber 8.
  • fuel i. Gasoline
  • injection nozzle 9 introduced through the intermediary of an injection nozzle 9, which means that the Internal combustion engine with direct injection works.
  • Fresh air / exhaust gas are in the cylinder head 2 not shown inlet and outlet valves effective.
  • a holder 10 for the injection nozzle 9, a holder 10 is provided, wherein the injection nozzle. 9 a nozzle body 11 having a first end piece 12 and a second end piece 13 having.
  • the nozzle body 11 and the end pieces 12 and 13 have a cylindrical Circular cross-section configuration.
  • the end pieces 12 and 13 cooperate with a first bore 14 and a second bore 15 together, in Components of the internal combustion engine 1 are incorporated. These components are formed by the cylinder head 2 and the intake system 3.
  • a clamping device 16 which is the first end piece 12 with defined acting in the axial direction A bias in the first bore 14 in the cylinder head 2 stops.
  • the second tail works under Interposition of an intermediate sleeve 17 with the second bore 15 in the Suction unit 2 together.
  • the clamping device 16 engages a radial stop 18 of the nozzle body 11 at.
  • the clamping device 16 with a provided fork-like clamping portion 19 which rests against the stop 18.
  • the Clamping portion 19 of the clamping device 16 is part of a plate-like Carrier 20, between the first support level 4 of the cylinder head 2 and the second support level 5 of the suction system 3 is clamped and held in position.
  • the clamping device 16 is a clamping sleeve 21, which is the nozzle body 11 of the injection nozzle 9 in a partial region 72 coaxially and jacket-like surrounds; one Other portion 23 of the nozzle body 11 is exposed.
  • the clamping sleeve 21 is supported on the one hand to a stop 22 of the nozzle body 11 and on the other hand to a Supporting plane 23 of the intake system 3 from.
  • the clamping sleeve 21 consists of a suitable metal with resilient properties. It is also conceivable, however, the clamping sleeve 21 to produce from a corresponding plastic.
  • To achieve a targeted Biasing force comprises the clamping sleeve 21 partially a bellows Spring section 24 provided adjacent to the support plane 3 of the intake system 3 is.
  • the clamping sleeve 21 has a recess 25 in the region of the intermediate sleeve 17, in a groove-like recess 26 of said intermediate sleeve 17 resiliently intervenes. As a result, the indentation 25 and the recess 26 form and work non-positively together.
  • the extension 27 has a Indentation 29 which engages in a formation 30 of the wall portion 28, whereby the indentation 29 and the molding 30 cooperate positively.
  • the suction system 3 is adjacent to the intermediate sleeve 17 with a Fuel supply channel 31 provided, the one-piece with the intake system. 3 is made.
  • the fuel supply passage 31 has a cross-sectional view oval shape with longitudinal sides 32,33 on the approximately in the longitudinal direction B-B of the channel. 7 or a central longitudinal plane of the latter are aligned.
  • a suction system 3 facing end piece 34th provided, which rests in the second bore 15 of the intake system 3.
  • the end piece 34 is provided on its outer side 35 with a recess 36 which serves as a receptacle for a first seal 37 is formed.
  • the seal 37 is between bore 15 and Between sleeve 17 and recess 36 effectively.
  • a comparable design is arranged on the second end piece 13 of the nozzle body 11.
  • the second end piece 13 rests in a bore 38 of the intermediate sleeve 17, and it has a receptacle for a second seal 39 serving recess 40.
  • the seal 39 is between the bore 38 and the end piece 13 and the recess 40 effectively.
  • the injection nozzle 9 is thus tolerance compensating on the side of the intake system 3 stored.
  • the injection nozzle 9 on the side of the cylinder head 2 by means conical surfaces 41 set positionally, the injector 9 at a distance to the conical surfaces 41 is provided with a radial stop surface 42 which is under the intermediation of a sealing body 43 on a corresponding stop surface 44 of the cylinder head 2 is supported.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Die Erfindung bezieht sich auf eine Halterung für eine Einspritzdüse, insbesondere für Brennkraftmaschinen mit Direkteinspritzung, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a holder for an injection nozzle, in particular for Internal combustion engines with direct injection, according to the preamble of Patent claim 1.

Eine bekannte Einspritzdüse, DE 44 18 001 A1, ist zwischen einem bogenförmigen Saugrohr und einem an einem Zylinderkopf angeschlossenem Flansch festgelegt. Dabei ist die Einspritzdüse als vormontierte Einheit mit dem Zylinderkopf verbunden.A known injection nozzle, DE 44 18 001 A1, is between an arcuate Suction tube and a flange connected to a cylinder head. The injector is connected as a preassembled unit with the cylinder head.

In der DE 28 29 057 A1 werden Einspritzventile behandelt, die einerseits mit ersten Endstücken in eine Sauganlage eingesetzt sind und andererseits mit zweiten Endstücken unter Vermittlung von Schrauben an ein Kraftstoffverteilerrohr angeschlossen sind.In DE 28 29 057 A1 injectors are treated, on the one hand with the first End pieces are inserted into a suction system and on the other hand with second End pieces by means of screws to a fuel rail are connected.

Aufgabe der Erfindung ist es, eine Halterung für eine Einspritzdüse zu schaffen, die zum einen auch bei relativ hohen Einspritzdrücken systemdicht festgelegt und zum anderen leicht montierbar ist.The object of the invention is to provide a holder for an injection nozzle, the on the one hand set system-tight even at relatively high injection pressures and for other is easy to assemble.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten.According to the invention, this object is achieved by the features of patent claim 1 Further, the invention ausgestaltende features are in the dependent claims contain.

Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, daß die Spanneinrichtung mit definierter und in axialer Richtung wirkender Vorspannkraft die Einspritzdüse in Lage hält, wodurch dem - gerade bei Direkteinspritzung für Brennkraftmaschinen der Otto-Bauart - auftretenden Systemdruck Rechnung getragen wird und spezielle Verschraubungen pro Einspritzdüse entfallen können. Auch sorgt die Zwischenhülse dafür, daß stets auftretende Fertigungstoleranzen für die Verbindungsfunktion der Einspritzdüse unschädlich sind. Mit der metallischen Spannhülse, die einfach herstellbar ist, kann dank auch des Faltenbalgs eine gezielte in Richtung Zylinderkopf gerichtete Vorspannkraft bewerkstelligt werden. Auch besteht die Möglichkeit, die Zwischenhülse durch die Einformungen und die Ausnehmungen zwischen Spannhülse und Zwischenhülse bzw. Verlängerung der Spannhülse und Wandungsabschnitt der Saugrohranlage auf einfache Weise vorzumontieren. Die Montage der Einspritzdüse selbst ist dann lediglich nur noch ein einfacher Einführungsvorgang.The advantages achieved by the invention are to be seen in that the Clamping device with defined and acting in the axial direction biasing force the Injection holds in position, whereby the - especially with direct injection for Internal combustion engines of the Otto type - occurring system pressure taken into account and special glands per injector can be omitted. Also provides the Zwischenhülse that always occurring manufacturing tolerances for Connection function of the injector are harmless. With the metallic adapter sleeve, which is easy to produce, thanks also to the bellows a targeted towards Cylinder head directed biasing force can be accomplished. Also exists the Possibility of the intermediate sleeve through the recesses and the recesses between Clamping sleeve and intermediate sleeve or extension of the clamping sleeve and Wall section of the intake manifold easy to pre-assemble. The assembly The injection nozzle itself is then only a simple introduction process.

In der Zeichnung wird ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher erläutert ist. Das in den Fig. 1 und 2 dargestellte Ausführungsbeispiel ist dabei nicht Gegenstand der Erfindung, sondern dient lediglich zur Klarstellung des technischen Sachverhalts.In the drawing, an embodiment of the invention is shown below is explained in more detail. The embodiment shown in FIGS. 1 and 2 is thereby not the subject of the invention, but merely serves to clarify the technical Facts.

Es zeigen

Fig. 1
einen Teilquerschnitt eines Zylinderkopfs einer Brennkraftmaschine mit einer Halterung für eine Einspritzdüse,
Fig. 2
eine perspektivische Einzelheit der Fig. 1 in größerem Maßstab,
Fig. 3
eine Ansicht entsprechend Fig. 1 einer Halterung für eine Einspritzdüse und
Fig. 4
eine Einzelheit der Fig. 3 in größerem Maßstab.
Show it
Fig. 1
a partial cross section of a cylinder head of an internal combustion engine with a holder for an injection nozzle,
Fig. 2
a perspective detail of FIG. 1 on a larger scale,
Fig. 3
a view corresponding to FIG. 1 a holder for an injection nozzle and
Fig. 4
a detail of FIG. 3 on a larger scale.

Eine nicht näher dargestellte, beispielsweise mehrzylindrige Brennkraftmaschine 1 der Otto-Bauart umfasst einen Zylinderkopf 2 und eine Sauganlage 3. Die Sauganlage 3 ist mit dem Zylinderkopf 2 verbunden, wobei hierzu der Zylinderkopf 2 mit einer ersten Auflageebene 4 und die Sauganlage 3 mit einer zweiten Auflageebene 5 versehen ist. Mittels der Sauganlage 3 wird über einen mit einer Drosselklappe 6 versehener Kanal 7 einem Brennraum 8 Frischluft zugeführt. In diesen Brennraum 8 wird Kraftstoff, d.h. Benzin, unter Vermittlung einer Einspritzdüse 9 eingebracht, was bedeutet, daß die Brennkraftmaschine mit Direkteinspritzung arbeitet. Zur Gaswechselsteuerung - Frischluft/Abgas- sind im Zylinderkopf 2 nicht gezeigte Ein- und Auslaßventile wirksam.A non-illustrated, for example multi-cylinder internal combustion engine 1 of Otto type comprises a cylinder head 2 and a suction system 3. The suction system 3 is connected to the cylinder head 2, for which purpose the cylinder head 2 with a first Support level 4 and the suction system 3 is provided with a second support level 5. By means of the intake system 3 is provided via a provided with a throttle valve 6 channel. 7 a fresh air supplied to a combustion chamber 8. In this combustion chamber 8 fuel, i. Gasoline, introduced through the intermediary of an injection nozzle 9, which means that the Internal combustion engine with direct injection works. For gas exchange control - Fresh air / exhaust gas are in the cylinder head 2 not shown inlet and outlet valves effective.

Für die Einspritzdüse 9 ist eine Halterung 10 vorgesehen, wobei die Einspritzdüse 9 einen Düsenkörper 11 mit einem ersten Endstück 12 und einem zweiten Endstück 13 aufweist. Der Düsenkörper 11 und die Endstücke 12 und 13 weisen eine zylindrische Konfiguration mit kreisförmigem Querschnitt auf. Die Endstücke 12 und 13 wirken mit einer ersten Bohrung 14 und einer zweiten Bohrung 15 zusammen, die in Komponenten der Brennkraftmaschine 1 eingearbeitet sind. Diese Komponenten werden durch den Zylinderkopf 2 und die Sauganlage 3 gebildet.For the injection nozzle 9, a holder 10 is provided, wherein the injection nozzle. 9 a nozzle body 11 having a first end piece 12 and a second end piece 13 having. The nozzle body 11 and the end pieces 12 and 13 have a cylindrical Circular cross-section configuration. The end pieces 12 and 13 cooperate with a first bore 14 and a second bore 15 together, in Components of the internal combustion engine 1 are incorporated. These components are formed by the cylinder head 2 and the intake system 3.

Am Düsenkörper 11 der Einspritzdüse 9 greift eine Spanneinrichtung 16 an, die das erste Endstück 12 mit definierter in axialer Richtung A wirkender Vorspannung in der ersten Bohrung 14 im Zylinderkopf 2 hält. Dagegen arbeitet das zweite Endstück unter Zwischenschaltung einer Zwischenhülse 17 mit der zweiten Bohrung 15 in der Sauganlage 2 zusammen. Die Spanneinrichtung 16 greift an einem radialen Anschlag 18 des Düsenkörpers 11 an. Hierzu ist die Spanneinrichtung 16 mit einem gabelartigen Spannabschnitt 19 versehen, der an dem Anschlag 18 anliegt. Der Spannabschnitt 19 der Spanneinrichtung 16 ist Bestandteil eines plattenartigen Trägers 20, der zwischen der ersten Auflageebene 4 des Zylinderkopfs 2 und der zweiten Auflageebene 5 der Sauganlage 3 eingespannt ist und in Lage gehalten wird.At the nozzle body 11 of the injection nozzle 9 engages a clamping device 16, which is the first end piece 12 with defined acting in the axial direction A bias in the first bore 14 in the cylinder head 2 stops. In contrast, the second tail works under Interposition of an intermediate sleeve 17 with the second bore 15 in the Suction unit 2 together. The clamping device 16 engages a radial stop 18 of the nozzle body 11 at. For this purpose, the clamping device 16 with a provided fork-like clamping portion 19 which rests against the stop 18. Of the Clamping portion 19 of the clamping device 16 is part of a plate-like Carrier 20, between the first support level 4 of the cylinder head 2 and the second support level 5 of the suction system 3 is clamped and held in position.

Gemäß Fig. 3 ist die Spanneinrichtung 16 eine Spannhülse 21, die den Düsenkörper 11 der Einspritzdüse 9 in einem Teilbereich 72 koaxial und mantelartig umgibt; ein andrer Teilbereich 23 des Düsenkörpers 11 liegt frei. Die Spannhülse 21 stützt sich einerseits an einem Anschlag 22 des Düsenkörpers 11 und andererseits an einer Stützebene 23 der Sauganlage 3 ab. Die Spannhülse 21 besteht aus einem geeigneten Metall mit federnden Eigenschaften. Denkbar ist aber auch die Spannhülse 21 aus einem entsprechenden Kunststoff herzustellen. Zur Erzielung einer gezielten Vorspannkraft umfaßt die Spannhülse 21 bereichsweise einen balgartigen Federabschnitt 24, der benachbart der Stützebene 3 der Sauganlage 3 vorgesehen ist.According to Fig. 3, the clamping device 16 is a clamping sleeve 21, which is the nozzle body 11 of the injection nozzle 9 in a partial region 72 coaxially and jacket-like surrounds; one Other portion 23 of the nozzle body 11 is exposed. The clamping sleeve 21 is supported on the one hand to a stop 22 of the nozzle body 11 and on the other hand to a Supporting plane 23 of the intake system 3 from. The clamping sleeve 21 consists of a suitable metal with resilient properties. It is also conceivable, however, the clamping sleeve 21 to produce from a corresponding plastic. To achieve a targeted Biasing force comprises the clamping sleeve 21 partially a bellows Spring section 24 provided adjacent to the support plane 3 of the intake system 3 is.

Die Spannhülse 21 weist im Bereich der Zwischenhülse 17 eine Einformung 25 auf, die in eine nutartige Ausnehmung 26 der besagten Zwischenhülse 17 federnd eingreift. Dadurch arbeiten die Einformung 25 und die Ausnehmung 26 form- und kraftschlüssig zusammen. Außerdem ist die Spannhülse 21 mit einer Verlängerung 27 versehen, die einen Wandabschnitt 28 der Sauganlage 3 übergreift und unter Federspannung an diesem Wandabschnitt anliegt. Die Verlängerung 27 besitzt eine Einformung 29, die in eine Ausformung 30 des Wandabschnitts 28 eingreift, wodurch die Einformung 29 und die Ausformung 30 formschlüssig zusammenarbeiten.The clamping sleeve 21 has a recess 25 in the region of the intermediate sleeve 17, in a groove-like recess 26 of said intermediate sleeve 17 resiliently intervenes. As a result, the indentation 25 and the recess 26 form and work non-positively together. In addition, the clamping sleeve 21 with an extension 27th provided, which engages over a wall portion 28 of the intake system 3 and under Spring tension applied to this wall section. The extension 27 has a Indentation 29 which engages in a formation 30 of the wall portion 28, whereby the indentation 29 and the molding 30 cooperate positively.

Die Sauganlage 3 ist benachbart der Zwischenhülse 17 mit einem Kraftstoffversorgungskanal 31 versehen, der aus einem Stück mit der Sauganlage 3 hergestellt ist. Der Kraftstoffversorgungskanal 31 weist im Querschnitt gesehen eine ovale Form mit Längsseiten 32,33 auf die in etwa in Längsrichtung B-B des Kanals 7 bzw. einer Mittellängsebene von letzterem ausgerichtet sind.The suction system 3 is adjacent to the intermediate sleeve 17 with a Fuel supply channel 31 provided, the one-piece with the intake system. 3 is made. The fuel supply passage 31 has a cross-sectional view oval shape with longitudinal sides 32,33 on the approximately in the longitudinal direction B-B of the channel. 7 or a central longitudinal plane of the latter are aligned.

An der Zwischenhülse 17 ist ein der Sauganlage 3 zugekehrtes Endstück 34 vorgesehen, das in der zweiten Bohrung 15 der Sauganlage 3 ruht. Das Endstück 34 ist an seiner Außenseite 35 mit einer Ausnehmung 36 versehen, die als Aufnahme für eine erste Dichtung 37 ausgebildet ist. Die Dichtung 37 ist zwischen Bohrung 15 und Zwischenhülse 17 bzw. Ausnehmung 36 wirksam. Eine vergleichbare Ausführung ist am zweiten Endstück 13 des Düsenkörpers 11 angeordnet. Das zweite Endstück 13 ruht in einer Bohrung 38 der Zwischenhülse 17, und es weist eine als Aufnahme für eine zweite Dichtung 39 dienende Ausnehmung 40 auf. Die Dichtung 39 ist zwischen der Bohrung 38 und dem Endstück 13 bzw. der Ausnehmung 40 wirksam. At the intermediate sleeve 17 is a suction system 3 facing end piece 34th provided, which rests in the second bore 15 of the intake system 3. The end piece 34 is provided on its outer side 35 with a recess 36 which serves as a receptacle for a first seal 37 is formed. The seal 37 is between bore 15 and Between sleeve 17 and recess 36 effectively. A comparable design is arranged on the second end piece 13 of the nozzle body 11. The second end piece 13 rests in a bore 38 of the intermediate sleeve 17, and it has a receptacle for a second seal 39 serving recess 40. The seal 39 is between the bore 38 and the end piece 13 and the recess 40 effectively.

Die Einspritzdüse 9 ist somit auf der Seite der Sauganlage 3 toleranzausgleichend gelagert. Dagegen ist die Einspritzdüse 9 auf der Seite des Zylinderkopfs 2 mittels konischer Flächen 41 lagemäßig festgelegt, wobei die Einspritzdüse 9 mit Abstand zu den konischen Flächen 41 mit einer radialen Anschlagfläche 42 versehen ist, die sich unter Vermittlung eines Dichtkörpers 43 an einer korrespondierenden Anschlagfläche 44 des Zylinderkopfs 2 abstützt.The injection nozzle 9 is thus tolerance compensating on the side of the intake system 3 stored. In contrast, the injection nozzle 9 on the side of the cylinder head 2 by means conical surfaces 41 set positionally, the injector 9 at a distance to the conical surfaces 41 is provided with a radial stop surface 42 which is under the intermediation of a sealing body 43 on a corresponding stop surface 44 of the cylinder head 2 is supported.

Claims (10)

  1. An internal-combustion engine, especially with direct fuel injection, comprising a cylinder head (2), an intake system (3) and an injection nozzle with a nozzle body (11), the cylindrical first and second end pieces (12, 13) of which co-operate with first and second bores (14, 15) formed in the cylinder head (2) and the intake system (3), and comprising a holder for the injection nozzle (9), characterised in that a clamping device in the form of a clamping sleeve (21) engages the nozzle body (11) of the injection nozzle (9) and holds the first end piece (12) in position in the first bore (14) of the cylinder head (2) of the internal-combustion engine (1) with defined bias acting in the axial direction (A) of the injection nozzle (9), wherein the clamping sleeve (21) surrounds at least part of the nozzle body (11) of the injection nozzle (9) and is supported on a stop (22) of the nozzle body (11) and on a supporting plane (23) of the intake system (3).
  2. An internal-combustion engine according to claim 1, characterised in that the clamping sleeve (21) is made of metal.
  3. An internal-combustion engine according to claim 1 or 2, characterised in that part of the clamping sleeve (21) is provided with a bellows-type resilient portion (24).
  4. An internal-combustion engine according to any one of the preceding claims, characterised in that the second end piece (13) co-operates with the second bore (15) of the intake system (3) by means of an intermediate sleeve (17), and in that the clamping sleeve (21) is provided, in the region of the intermediate sleeve (17), with an indentation (25) which engages in a groove-type recess (26) of the intermediate sleeve (17) in such a way that the indentation (25) and the recess (26) co-operate positively and frictionally.
  5. An internal-combustion engine according to any one of the preceding claims, characterised in that the clamping sleeve (21) has an extension (27) which engages over a wall portion (28) of the intake system (3), the extension (27) resting against the wall portion (28) under spring tension.
  6. An internal-combustion engine according to claim 5, characterised in that the extension (27) is provided with an indentation (29) which engages in a depression (30) of the wall portion (28) in such a way that the indentation (29) and the depression (30) co-operate positively.
  7. An internal-combustion engine according to any one of the preceding claims, characterised in that a fuel supply duct (31) is provided adjacent to the intermediate sleeve (17) in the intake system (3) and is formed in one piece with the intake system (3).
  8. An internal-combustion engine according to claim 7, characterised in that the fuel supply duct (31) has a substantially oval shape, wherein longitudinal sides (32, 33) of the fuel supply duct (31) are substantially in alignment with the longitudinal direction of a duct (7) of the intake system (3).
  9. An internal-combustion engine according to any one of claims 4 to 8, characterised in that a first seal (37) is provided between an end piece (34) of the intermediate sleeve (17) and the second bore (15) of the intake system (3), and a second seal (39) is provided between a bore (38) in the intermediate sleeve (17) and the second end piece (13) of the injection nozzle (9).
  10. An internal-combustion engine according to claim 1, characterised in that the clamping device (21) engages a radial stop (22) of the nozzle body (11).
EP00119246A 1999-10-12 2000-09-06 Holder for an injector Expired - Lifetime EP1092864B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19949080 1999-10-12
DE19949080A DE19949080B4 (en) 1999-10-12 1999-10-12 Holder for an injection nozzle

Publications (3)

Publication Number Publication Date
EP1092864A2 EP1092864A2 (en) 2001-04-18
EP1092864A3 EP1092864A3 (en) 2004-01-14
EP1092864B1 true EP1092864B1 (en) 2005-07-13

Family

ID=7925322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119246A Expired - Lifetime EP1092864B1 (en) 1999-10-12 2000-09-06 Holder for an injector

Country Status (5)

Country Link
US (1) US6708672B1 (en)
EP (1) EP1092864B1 (en)
JP (1) JP2001132581A (en)
DE (2) DE19949080B4 (en)
ES (1) ES2241533T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10157010A1 (en) * 2001-11-21 2003-06-05 Bosch Gmbh Robert fuel injection system
EP1375895A2 (en) * 2002-06-26 2004-01-02 Robert Bosch Gmbh Apparatus for mixture formation in the intake system of internal combustion engines
US7107969B2 (en) * 2004-09-28 2006-09-19 Ford Global Technologies, Llc Twist-lock fuel injector assembly
JP2006200417A (en) * 2005-01-19 2006-08-03 Sanoh Industrial Co Ltd Fuel injection rail
EP2187040B1 (en) * 2005-03-03 2013-01-09 Robert Bosch GmbH Fuel injection system
DE102005037007A1 (en) * 2005-08-05 2007-02-08 Robert Bosch Gmbh fuel injector
DE102017221203A1 (en) * 2017-11-27 2019-05-29 Hyundai Motor Company A fuel injection system and method of operating a fuel injection system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829057A1 (en) * 1978-07-01 1980-01-10 Bosch Gmbh Robert FUEL INJECTION SYSTEM
CA1213803A (en) * 1983-04-27 1986-11-12 Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co., Ltd .) Fuel injection system
DE3739108A1 (en) * 1987-11-19 1989-06-01 Opel Adam Ag INTERNAL COMBUSTION ENGINE WITH A FUEL INJECTION SYSTEM
US5465699A (en) * 1993-06-01 1995-11-14 Volkswagen Ag Intake pipe arrangement for an internal combustion engine having individual arc-shaped cylinder intake pipes
US5394850A (en) * 1993-11-19 1995-03-07 Siemens Electric Limited Top-feed fuel injector mounting in an integrated air-fuel system
US5682859A (en) * 1996-01-22 1997-11-04 Siemens Automotive Corporation Method and arrangement for mounting fuel rails
US5718205A (en) * 1996-06-27 1998-02-17 Kia Motors Corporation Fuel injection system with variable injection position
DE19628326A1 (en) * 1996-07-13 1998-01-15 Dolmar Gmbh Two=stroke piston ported internal combustion engine for chain saw
DE19735665A1 (en) * 1997-06-25 1999-01-07 Bosch Gmbh Robert Fuel injection system
DE19758817B4 (en) * 1997-12-17 2010-08-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Holder for a fuel injection valve on the cylinder head of an internal combustion engine
IT1306311B1 (en) * 1998-07-01 2001-06-04 Magneti Marelli Spa COUPLING SYSTEM BETWEEN ENGINE HEAD, INJECTOR AND FUEL COLLECTOR.

Also Published As

Publication number Publication date
DE19949080B4 (en) 2005-11-17
EP1092864A2 (en) 2001-04-18
DE50010700D1 (en) 2005-08-18
EP1092864A3 (en) 2004-01-14
ES2241533T3 (en) 2005-11-01
DE19949080A1 (en) 2001-04-19
JP2001132581A (en) 2001-05-15
US6708672B1 (en) 2004-03-23

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