DE498386C - Injection nozzle for internal combustion engines - Google Patents
Injection nozzle for internal combustion enginesInfo
- Publication number
- DE498386C DE498386C DESCH76543D DESC076543D DE498386C DE 498386 C DE498386 C DE 498386C DE SCH76543 D DESCH76543 D DE SCH76543D DE SC076543 D DESC076543 D DE SC076543D DE 498386 C DE498386 C DE 498386C
- Authority
- DE
- Germany
- Prior art keywords
- plate
- injection nozzle
- injection
- nozzle
- needle
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/29—Fuel-injection apparatus having rotating means
-
- 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 Brennkraftmaschinen Die Erfindung betrifft eine Einspritzdüse für Brennkraftmaschinen mit einer in bekannter Weise vom Brennstoffdruck gesteuerten, sich nach außen öffnenden Düsennadel, die hinter dem Ventilsitz einen den Spritzkanal mit Spiel durchsetzenden Zapfen besitzt.Injection nozzle for internal combustion engines The invention relates to a Injection nozzle for internal combustion engines with a fuel pressure in a known manner controlled, outwardly opening nozzle needle, which behind the valve seat a has the injection channel with clearance penetrating pin.
Erfindungsgemäß ist das Ende dieses, Zapfens zu einem die ringförmige Spritzöffnung ganz oder teilweise übergreifenden Teller ausgestaltet, der bei geschlossenem Ventil von der Düsenmündung absteht. Dieser Teller wirkt hei der Einspritzung, und zwar auch bei der kleinsten Brennstoffmenge, als Streu-und Drosselteller, so daß der Brennstoff einerseits nicht durchfallen kann und andererseits fein verteilt wird. Der Teller kann zur Regelung des Drosselspaltes während des Betriebes gegenüber der Nadel axial verstellbar sein.According to the invention, the end of this pin is an annular one Injection opening designed entirely or partially overlapping plate, which when closed Valve protrudes from the nozzle mouth. This plate acts as the injection, and even with the smallest amount of fuel, as a spreading and throttle plate, so that the fuel on the one hand cannot fall through and on the other hand it is finely distributed will. The plate can be used to regulate the throttle gap during operation the needle be axially adjustable.
Die Zeichnung zeigt in Abb. i eine Ausführungsform der Erfindung im Höhenschnitt. Abb. 2 ist ein Querschnitt nach der Linie A-B in Abb. i.The drawing shows in Fig. I an embodiment of the invention in Vertical cut. Fig. 2 is a cross-section along the line A-B in Fig. I.
Abb. 3 zeigt eine weitere Ausführungsform im Höhenschnitt. Abb. 4 ist eine Ansicht von unten zu Abb. 3, und Abb. 5 ist ein Höhenschnitt nach der Linie C-D in Abb. 4.Fig. 3 shows a further embodiment in vertical section. Fig. 4 Figure 3 is a bottom view of Figure 3 and Figure 5 is a vertical section along the line C-D in Fig. 4.
Im Düsenkörper a sitzt eine Hülse b mit Mantellängsrillen c; d ist das in der Hülse b geführte Brennstoffventil, welches von der Düsennnadel ä durchsetzt ist, die in bekannter Weise hinter dem Ventilsitz i einen den Spritzkanal mit Spiel durchsetzenden Zapfen f besitzt. Das Brennstoffventil d ist im Brennstoffraum L bei lt abgesetzt.In the nozzle body a sits a sleeve b with longitudinal grooves c; d is the fuel valve guided in the sleeve b, through which the nozzle needle ä passes, which in a known manner has a pin f passing through the injection channel behind the valve seat i. The fuel valve d is set down in the fuel chamber L at lt.
Der Nadelzapfen f ist erfindungsgemäß an seinem hinteren Ende zu einem die ringförmige Spritzöffnung übergreifenden runden Teller e ausgestaltet, welcher bei geschlossenem Ventil d mit einem Spalt x von der Diisenmündung absteht. Das vordere Ende des Zapfens f ist in die Düsennadel eingeschraubt, deren vorderes Ende mit einem Bund auf dem Brennstoffventil aufsitzt und so nach außen ragt, daß die Düsennadel rechts oder links gedreht werden kann. Eine Feder k preßt das Ventil d gegen seinen Sitz i. According to the invention, the needle pin f is configured at its rear end to form a round plate e which overlaps the annular spray opening and which protrudes from the nozzle opening with a gap x when the valve d is closed. The front end of the pin f is screwed into the nozzle needle, the front end of which rests with a collar on the fuel valve and protrudes outward so that the nozzle needle can be turned to the right or left. A spring k presses the valve d against its seat i.
An Stelle des runden Tellers e kann auch, wie aus Abb. 3 bis 5 ersichtlich, ein oval oder elliptisch geformter Teller Verwendung finden.Instead of the round plate e, as can be seen in Figs. 3 to 5, an oval or elliptical plate can be used.
Der unter Druck eingespritzte Brennstoff wirkt auf die Ventilfläche h ein und hebt damit das Ventil hoch, so daß der Brennstoff durch den ringförmigen Spritzkanal uild den Spalt x austreten kann. Er trifft dabei auf den die Spritzöffnung übergreifenden Teller e und wird durch diesen stets gedrosselt sowie zerstreut und damit fein verteilt, selbst dann, wenn nur eine kleine Menge Brennstoff unter geringem Druck eingespritzt wird. Die Drosselung und Zerstäubung des Brennstoffes tritt also auch dann. auf, wenn der Drossel-und Streuteller nur wenig angehoben wird. Mit dem Nachlassen des Brennstoffdruckes vergrößert sich der Drosselspalt x, doch bleiben Drosselung und Streuung des Brennstoffes bestehen. Erfordern .die Betriebsverhältnisse, z. B. längerer Leerlauf, eine rinderung des Drosselspaltes x, so. kann. diese durd Drehen der Nadel g während des Betriebes erfolgen. Die Nadel wirkt dann als Schraubenmutter, welche den Nadelzapfen e, f axial verstellt.The fuel injected under pressure acts on the valve surface h and thus lifts the valve so that the fuel can exit through the annular spray channel uild the gap x. In doing so, it hits the plate e which extends over the injection opening and is always throttled and dispersed and thus finely distributed by it, even if only a small amount of fuel is injected under low pressure. The throttling and atomization of the fuel also occurs then. on when the throttle and spreading plate is raised only a little. When the fuel pressure drops, the throttle gap x increases, but the throttling and dispersion of the fuel remain. Require the operating conditions, e.g. B. longer idle, a reduction of the throttle gap x, so. can. this is done by turning the needle g during operation. The needle then acts as a screw nut which axially adjusts the needle pin e, f.
Die elliptische oder ovale Form des Drossel- und Streutellers ermöglicht eine unterschiedliche Formgebung des Brennstoff streukegeis, um für bestimmte Verhältnisse des Ver#brennungraumes einen Ausgleich zu finden, z. B. bei doppelt wirkenden Brennkraftmaschinen.The elliptical or oval shape of the throttle and spreading plate makes it possible a different shape of the fuel streukegeis in order for certain conditions to find a balance in the combustion chamber, e.g. B. in double-acting internal combustion engines.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH76543D DE498386C (en) | 1926-01-01 | 1926-01-01 | Injection nozzle for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH76543D DE498386C (en) | 1926-01-01 | 1926-01-01 | Injection nozzle for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE498386C true DE498386C (en) | 1930-05-21 |
Family
ID=7441411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH76543D Expired DE498386C (en) | 1926-01-01 | 1926-01-01 | Injection nozzle for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE498386C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE757316C (en) * | 1938-07-21 | 1951-07-26 | Bosch Gmbh Robert | Injection nozzle |
US4417694A (en) * | 1980-10-22 | 1983-11-29 | The Bendix Corporation | Injector valve with contoured valve seat and needle valve interface |
FR3112186A1 (en) * | 2020-07-02 | 2022-01-07 | Schrader | Pressure regulator for spraying a fluid and associated process |
-
1926
- 1926-01-01 DE DESCH76543D patent/DE498386C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE757316C (en) * | 1938-07-21 | 1951-07-26 | Bosch Gmbh Robert | Injection nozzle |
US4417694A (en) * | 1980-10-22 | 1983-11-29 | The Bendix Corporation | Injector valve with contoured valve seat and needle valve interface |
FR3112186A1 (en) * | 2020-07-02 | 2022-01-07 | Schrader | Pressure regulator for spraying a fluid and associated process |
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