CH322016A - Device for cooling the injection nozzles of internal combustion engines - Google Patents
Device for cooling the injection nozzles of internal combustion enginesInfo
- Publication number
- CH322016A CH322016A CH322016DA CH322016A CH 322016 A CH322016 A CH 322016A CH 322016D A CH322016D A CH 322016DA CH 322016 A CH322016 A CH 322016A
- Authority
- CH
- Switzerland
- Prior art keywords
- jacket
- cooling
- socket
- internal combustion
- combustion engines
- 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
-
- 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
- F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
- F02M2700/07—Nozzles and injectors with controllable fuel supply
- F02M2700/077—Injectors having cooling or heating means
Landscapes
- 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
Einrichtung zum Kühlen der Einspritzdüsen von Verbrennungsmotoren Verbrennungskraftmaschinen, insbesondere Dieselmotoren, die mit Kesselheizölen oder Dieselölen mit grossem Verkohlungsrückstand und grossem Asphaltgehalt betrieben werden, sind der Ablagerung von Verkohlungsrück- ständen an ihren Einspritzdüsen unterworfen. Zur Vermeidung dieses Nachteils muss die Düse kräftig gekühlt werden.
Die Erfindung bezweckt eine Einrichtung zu schaffen, mittels welcher eine kräftige Küh lung der Düse erreicht wird, und die von ein fachem Aufbau und leicht zu handhaben und zu unterhalten ist.
Auf der Zeichnung ist ein Ausführungs beispiel einer erfindungsgemässen Kühleinrich tung im Vertikalschnitt dargestellt.
Das Einspritzventil 1, dessen unteres Ende 2 als Zerstäuberdüse ausgebildet ist, ist von einem Mantel 3 umgeben, der aus korrosions festem Material besteht, z. B. rostfreiem Stahl. Durch Kanäle 4 und 5 in diesem Mantel wird ein Kühlmedium, z. B. Wasser, iii den ringför- inigen Raum zwischen dem unteren Ende des Mantels und einer wärmeleitenden Buchse 7, die auch als Sitz der Einspritzdüse dient, ge bracht. Diese Buchse sollte aus verhältnis mässig weichem 11aterial mit besserer Wärme leitfähigkeit, als Stahl z. B. Kupfer oder einer Kupferlegierung, hergestellt sein.
Wenn die Buchse 7 durch das Einspritz- ventil gegen ihren Sitz im Mantel gepresst wird, so kann das Kühlmedium im Raum 6 nicht in den Zylinderverbrennungsraum 8 ge langen, und die heissen Verbrennungsgase können auch nicht in den Kühlraum eindrin gen.
Der obere Teil der Buchse 7 ist in den Man tel 3 eingepresst und das Einspritzventil kann daher leicht entfernt werden, ohne die Buchse von ihrem Sitz zu lösen. Nichtdestoweniger kann die Buchse erforderlichenfalls ohne Schwierigkeiten herausgenommen werden.
In der gezeigten Darstellung wird das Einspritzventil von denselben Stiftschrauben 9 und 10 in seiner Lage gehalten, die den Man tel gegen seinen Sitz im Zylinderkopf pressen. Der Oberteil 9 der Stiftschrauben, der das Ein- spritzventil in Stellung hält, ist gegenüber dem unteren Teil von reduziertem Durchmes ser, um den richtigen Druck zwischen Düse 2 und Buchse 7 zu gewährleisten, der nicht zu hoch sein darf.
Device for cooling the injection nozzles of internal combustion engines Internal combustion engines, in particular diesel engines which are operated with boiler oils or diesel oils with a large carbon residue and a large asphalt content, are subject to the deposition of carbon residues on their injection nozzles. To avoid this disadvantage, the nozzle must be strongly cooled.
The invention aims to provide a device by means of which a powerful Küh treatment of the nozzle is achieved, and which is of a simple structure and easy to handle and maintain.
In the drawing, an embodiment example of a cooling device according to the invention is shown in vertical section.
The injection valve 1, the lower end 2 of which is designed as an atomizer nozzle, is surrounded by a jacket 3, which consists of corrosion-resistant material, for. B. stainless steel. Through channels 4 and 5 in this jacket, a cooling medium, for. B. water, iii the ringför- inigen space between the lower end of the jacket and a thermally conductive sleeve 7, which also serves as the seat of the injection nozzle, ge brought. This socket should be made of relatively moderately soft 11material with better thermal conductivity than steel z. B. copper or a copper alloy.
If the socket 7 is pressed against its seat in the jacket by the injection valve, the cooling medium in space 6 cannot reach the cylinder combustion space 8, and the hot combustion gases cannot penetrate into the cooling space either.
The upper part of the socket 7 is pressed into the Man tel 3 and the injection valve can therefore be easily removed without loosening the socket from its seat. Nevertheless, if necessary, the socket can be taken out without difficulty.
In the illustration shown, the injection valve is held in its position by the same studs 9 and 10, which press the Man tel against its seat in the cylinder head. The upper part 9 of the studs, which holds the injection valve in position, has a reduced diameter compared to the lower part in order to ensure the correct pressure between nozzle 2 and socket 7, which must not be too high.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE322016X | 1953-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH322016A true CH322016A (en) | 1957-05-31 |
Family
ID=20307869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH322016D CH322016A (en) | 1953-04-21 | 1954-04-21 | Device for cooling the injection nozzles of internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH322016A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480623A (en) * | 1982-11-05 | 1984-11-06 | Lucas Industries Public Limited Company | Liquid fuel injection pump |
-
1954
- 1954-04-21 CH CH322016D patent/CH322016A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480623A (en) * | 1982-11-05 | 1984-11-06 | Lucas Industries Public Limited Company | Liquid fuel injection pump |
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