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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/043—Injectors 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)
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)
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 |
-
1933
- 1933-02-25 CH CH167276D patent/CH167276A/en unknown
Cited By (3)
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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