DE347725C - Injection nozzle for internal combustion engines - Google Patents
Injection nozzle for internal combustion enginesInfo
- Publication number
- DE347725C DE347725C DENDAT347725D DE347725DD DE347725C DE 347725 C DE347725 C DE 347725C DE NDAT347725 D DENDAT347725 D DE NDAT347725D DE 347725D D DE347725D D DE 347725DD DE 347725 C DE347725 C DE 347725C
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- internal combustion
- needle
- combustion engines
- nozzle body
- 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
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/06—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves being furnished at seated ends with pintle or plug shaped extensions
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M2700/074—Injection valve actuated by fuel pressure for pressurised fuel supply
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
Einspritzdüse für Verbrennungskraftmaschinen. Gegenstand der Erfindung ist eine Düse von Verbrennungskraftmaschinen, bei denen der Brennstoff ohne Zuhilfenahme von Einblaseluft unmittelbar in den Zylinder eingestäubt wird.Injection nozzle for internal combustion engines. Subject of the invention is a nozzle of internal combustion engines, in which the fuel is unassisted is dusted directly into the cylinder by injection air.
Eine derartige Düse besteht im wesentlichen aus einem Nadelventfl, das an dem der Nadel gegenüberliegenden Ende einen federbelasteten Kolben aufweist, der beim Druckhub der Brennstoffpumpe angehoben wird und das Nadelventil öffnet. Die Nadel hat bei kleineren Motoren nur einen Durchmesser von etwa r nim. Ihre genaue Zentrierung in dem zu ihrer Aufnahme an der Mündung der Düse gebohrten Loch gleichen Durchmessers bereitete bisher große Schwierigkeiten, weil das die erwähnte feine Bohrung aufweisende Stück in den Düsenkörper unmittelbar eingeschraubt wurde. Selbst auf der Drehbank geschnittene Verschraubungen ergeben aber nur zufällig eine genaue Zentrierung, die ün vorliegenden Falle deshalb erforderlich ist, weil der erwähnte Steuerkolben der Nadel im Düsenkörper eingeschliffen ist und nicht im geringsten nachgeben kann. Die vorerwähnte Schwierigkeit wird durch den Erlindungsgegenstand dadurch behoben, daß das die erwähnte feine Bohrung aufweisende Stück ziemlich lose in den Düsenkörper eingesetzt ist und einen tellerventflartigen Sitz aufweist, der gegen einen entsprechenden Sitz des Düsenkörpers durch eine g#_eignete Verschraubung angepreßt wird. Hierdurch kann sich das Einsatzstück beim Anschrauben seitlich etwas verschieben und sich zur Nadel genau zentrisch einstellen.Such a nozzle essentially consists of a needle valve, which has a spring-loaded piston at the end opposite the needle, which is raised during the pressure stroke of the fuel pump and opens the needle valve. In the case of smaller motors, the needle only has a diameter of about r nim. Your exact Centering in the hole drilled to accommodate them at the mouth of the nozzle Diameter has so far caused great difficulties, because the aforementioned fine Bore having piece was screwed directly into the nozzle body. Self Screw connections cut on the lathe only give an exact one by chance Centering, which is necessary in the present case because the aforementioned The control piston of the needle is ground in the nozzle body and not in the least can give way. The aforementioned difficulty is posed by the subject matter of the invention remedied by the fact that the piece having the aforementioned fine bore is rather loose is inserted into the nozzle body and has a plate valve-like seat that against a corresponding seat of the nozzle body by means of a suitable screw connection is pressed. As a result, the insert can move a little to the side when it is screwed on shift and adjust to the needle exactly centric.
Auf der beiliegenden Zeichnung ist eine solche Anordnung in einer beispielsweisen Ausführungsform schematisch dargestellt. Es bedeutet a den Düsenkörper, in den der Kolben b des Düsenventils dicht eingeschliffen und durch eine Feder c belastet ist. Das Düsenventil hat seinen Sitz in einem in den Düsenkörper eingesetzten Einsatzstück d (s. vergrößerte Zeichnung der Düsenmündung in Abb. 2), in dessen in den Zylinder führende Bohrung e eine feine Nadel ' f hineinragt. Um ein stets genau zentrisches Eindringen dieser Nadel in die Bohrung e zu erzielen, ist das Einsatzstück in den Düsenkörper ziemlich lose eingepaßt, so daß es sich seitlich nach allen Richtungen um ein weniges verschieben läßt. Es wird durch die in den Düsenkörper eindringende Verschraubung g vermittelst seines tellerartigen Sitzes k gegen eine entsprechende Sitzfläche des Düsenkörpers angepreßt und dadurch abgedichtet.Such an arrangement is shown schematically in an exemplary embodiment in the accompanying drawing. It means a the nozzle body into which the piston b of the nozzle valve is ground tight and loaded by a spring c. The nozzle valve is seated in an insert piece d inserted into the nozzle body (see enlarged drawing of the nozzle orifice in Fig. 2), into the bore e of which a fine needle ' f protrudes into the cylinder. In order to always achieve an exactly centric penetration of this needle into the bore e, the insert piece is fitted rather loosely into the nozzle body, so that it can be shifted a little laterally in all directions. It is pressed against a corresponding seat surface of the nozzle body by the screw connection g penetrating into the nozzle body by means of its plate-like seat k and thus sealed.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE347725T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE347725C true DE347725C (en) | 1922-01-24 |
Family
ID=6256543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT347725D Expired DE347725C (en) | Injection nozzle for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE347725C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2655140A (en) * | 1947-12-01 | 1953-10-13 | Lee Royal | Fuel injection apparatus |
DE2746010A1 (en) * | 1977-10-13 | 1979-04-19 | Maschf Augsburg Nuernberg Ag | FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES |
US4213568A (en) * | 1977-03-08 | 1980-07-22 | Robert Bosch Gmbh | Fuel injection nozzle |
-
0
- DE DENDAT347725D patent/DE347725C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2655140A (en) * | 1947-12-01 | 1953-10-13 | Lee Royal | Fuel injection apparatus |
US4213568A (en) * | 1977-03-08 | 1980-07-22 | Robert Bosch Gmbh | Fuel injection nozzle |
DE2746010A1 (en) * | 1977-10-13 | 1979-04-19 | Maschf Augsburg Nuernberg Ag | FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES |
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