CH167276A - Fuel injector. - Google Patents

Fuel injector.

Info

Publication number
CH167276A
CH167276A CH167276DA CH167276A CH 167276 A CH167276 A CH 167276A CH 167276D A CH167276D A CH 167276DA CH 167276 A CH167276 A CH 167276A
Authority
CH
Switzerland
Prior art keywords
fuel
joint
cooling
supply line
chamber
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Gebr Sulzer
Original Assignee
Sulzer 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 Sulzer Ag filed Critical Sulzer Ag
Publication of CH167276A publication Critical patent/CH167276A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M53/00Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04Injectors with heating, cooling, or thermally-insulating means
    • F02M53/043Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

  

      Br        ennstoffeinspritzvorr        ichtung.       Die Erfindung     betrifft    eine     Brennstoffein-          spritzvorrichtung,    bei der eine die Einspritz  düse und die     Brennstoffzuleitung    voneinander  trennende Fuge einerseits in den Brennstoff  raum, anderseits in einen Kühlraum mündet  und besteht darin, dass in der Fuge ein an  eine Ableitung angeschlossener Ringraum so  ausgespart ist, dass er die     brennstoffseitige     Mündung der Fuge umschliesst, zum Zweck,  ein Übertreten von in die Fuge eindringen  dem Brennstoff in den     Kühlraum    zu vermeiden.  



  Ein Ausführungsbeispiel des Erfindungs  gegenstandes ist auf der Zeichnung im Schnitt  dargestellt.  



       rx    ist das Gehäuse,<I>b</I> die Einspritzdüse,  c die     Brennstoffzuleitung    der Düse, d der  Kühlraum, e die     Kühlwasserzuleitung    und f  die     Kühlwasserableitung    einer gekühlten       Brennstoffeinspritzvorrichtung,    bei der die  Brennstoffzuleitung in einem die Düse in  üblicher Weise dichtend an das Gehäuse  anpressenden Körper     g    ausgespart ist, und  bei der eine zwischen Düse und     Anpresskör-          per    sich hinziehende Fuge lt einerseits in die    unter hohem Druck stehenden Brennstoff  räume, anderseits in den Kühlraum mündet.

    i ist ein im Düsenkörper ausgesparter, mit  Brennstoff angefüllter Ringraum, der den  Zweck hat, die Brennstoffzuleitung und ihre  im Düsenkörper angeordnete Fortsetzung auch  dann miteinander zu verbinden, wenn die  Körper<I>b</I> und     g    gegeneinander verdreht sind.       k    ist eine die Einspritzung steuernde Brenn  stoffnadel und l eine im Körper     g    geführte  Betätigungsstange der Nadel. Bei diesen Ein  richtungen bestand bisher der Übelstand,  dass in die Fuge     1c    eindringender     Brennstoff     durch die Fuge in den Kühlraum übertreten  und dadurch die Kühlwirkung erheblich ver  schlechtern konnte.

   Um diesem Übelstand  abzuhelfen, ist im     Anpresskörper        g    ein die       Brennstoffräume    umschliessender Ringraum     2n     angeordnet, der durch die Bohrung n an den  unter Atmosphärendruck stehenden, und in  einen Ablauf mündenden Ringraum o ange  schlossen ist. Auf diese Weise wird der in  die Fuge eindringende     Brennstoff,    bevor er  in den Kühlraum übertreten kann,     abgeführt         und eine Beeinträchtigung der Kühlwirkung  wird mit Sicherheit vermieden.



      Fuel injection device. The invention relates to a fuel injection device in which a joint separating the injection nozzle and the fuel supply line opens into the fuel chamber on the one hand, and into a cooling chamber on the other hand, and consists in that an annular space connected to a discharge line is recessed in the joint so that it encloses the opening of the joint on the fuel side, for the purpose of preventing the fuel from entering the joint into the cooling space.



  An embodiment of the subject invention is shown in section on the drawing.



       rx is the housing, <I> b </I> the injection nozzle, c the fuel supply line of the nozzle, d the cooling chamber, e the cooling water supply line and f the cooling water drainage line of a cooled fuel injection device, in which the fuel supply line in one of the nozzle seals in the usual way the housing pressing body g is recessed, and in which a joint extending between the nozzle and the pressing body opens into the fuel spaces under high pressure on the one hand and into the cooling space on the other.

    i is an annular space which is recessed in the nozzle body and filled with fuel, the purpose of which is to connect the fuel supply line and its continuation arranged in the nozzle body with one another even when the bodies <I> b </I> and g are twisted against each other. k is a fuel needle controlling the injection and l is an actuating rod of the needle guided in the body g. With these devices, there was previously the drawback that fuel penetrating into the joint 1c could pass through the joint into the cooling space and thereby considerably impair the cooling effect.

   In order to remedy this inconvenience, an annular space 2n surrounding the fuel spaces is arranged in the pressure body g, which is connected through the bore n to the annular space o which is under atmospheric pressure and opens into a drain. In this way, the fuel penetrating into the joint is discharged before it can pass into the cooling space, and impairment of the cooling effect is definitely avoided.

 

Claims (1)

PATENTANSPRUCH: Brennstoffeinspritzvorrichtung, bei der eine die Einspritzdüse und die Brennstoffzuleitung voneinander trennende Fuge einerseits in den Brennstoffraum, anderseits in einen Kühlraum mündet, dadurch gekennzeichnet, dass in der Fuge ein an eine Ableitung angeschlossener Ringraum so ausgespart ist, dass er die brenn- stoffseitige Mündung der Fuge umschliesst, zum Zweck, ein Übertreten von in die Fuge eindringendem Brennstoff in den Kühlraum zu vermeiden. PATENT CLAIM: Fuel injection device in which a joint separating the injection nozzle and the fuel supply line opens into the fuel chamber on the one hand and into a cooling chamber on the other, characterized in that an annular chamber connected to a discharge line is cut out in the joint in such a way that it forms the fuel-side opening the joint encloses, for the purpose of preventing fuel penetrating into the joint from entering the cooling space.
CH167276D 1933-02-25 1933-02-25 Fuel injector. CH167276A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH167276T 1933-02-25

Publications (1)

Publication Number Publication Date
CH167276A true CH167276A (en) 1934-02-15

Family

ID=4419715

Family Applications (1)

Application Number Title Priority Date Filing Date
CH167276D CH167276A (en) 1933-02-25 1933-02-25 Fuel injector.

Country Status (1)

Country Link
CH (1) CH167276A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000638B (en) * 1952-12-18 1957-01-10 Verwertungsgesellschaft Dr Ing Liquid-cooled injection nozzles for internal combustion engines
US4094465A (en) * 1976-02-20 1978-06-13 Societe D'etudes De Machines Thermiques S.E.M.T. Method and device for obviating the risk of injection fuel leakage, more particularly into the cooling system of diesel engine injectors
EP0845592A1 (en) * 1996-12-02 1998-06-03 Wärtsilä NSD Schweiz AG Cooling element and fuel injector with cooling element for an internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000638B (en) * 1952-12-18 1957-01-10 Verwertungsgesellschaft Dr Ing Liquid-cooled injection nozzles for internal combustion engines
US4094465A (en) * 1976-02-20 1978-06-13 Societe D'etudes De Machines Thermiques S.E.M.T. Method and device for obviating the risk of injection fuel leakage, more particularly into the cooling system of diesel engine injectors
EP0845592A1 (en) * 1996-12-02 1998-06-03 Wärtsilä NSD Schweiz AG Cooling element and fuel injector with cooling element for an internal combustion engine

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