DE498386C - Injection nozzle for internal combustion engines - Google Patents

Injection nozzle for internal combustion engines

Info

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
Application number
DESCH76543D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DESCH76543D priority Critical patent/DE498386C/en
Application granted granted Critical
Publication of DE498386C publication Critical patent/DE498386C/en
Expired legal-status Critical Current

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
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/06Fuel-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
    • 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
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • 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
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/29Fuel-injection apparatus having rotating means
    • 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
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07Nozzles and injectors with controllable fuel supply
    • F02M2700/074Injection 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)

PATENTANSPRÜCHE: i. Einspritzdüse für Bremikraftmasehinen mit einer vom Brennstoffdruck gesteuerten, sich nach außen öffnenden Düsennadel, die hinter dem Ventilsitz einen den Spritzkanal mit Spiel durchsetzenden Zapfen besitzt, dadurch gekennzeichnet, daß. das Zapfenende zu einem die ringförmige Spritzöffnung ;ganz oder teilwexst übergreifenden Teller (e) ausgestaltet ist, der bei geschlossenem Ventil von der Düsenmündung absteht und bei der Einspritzung als Streu- und Drosselteller wirkt. PATENT CLAIMS: i. Injection nozzle for Bremikraftmachinen with a fuel pressure-controlled, outward-opening nozzle needle behind the valve seat has a pin penetrating the injection channel with play, thereby marked that. the spigot end to one the annular spray opening; whole or partially overlapping plate (s) is designed, the closed Valve protrudes from the nozzle orifice and acts as a spreading and throttle plate during injection works. 2. Einspritzdüse nach Anspruch i, dadurch gekennzeichnet, daß der Teller (e) gegenüber der Nadel axial verstellbar ist, so daß der Drosselspalt (x) während des Betriebes geregelt wenden kann. 2. Injection nozzle according to claim i, characterized in that the plate (e) is axially adjustable with respect to the needle, so that the throttle gap (x) during of the company regulated. 3. Einspritzdüse nach Anspruch i und 2, dadurch gekennzeichnet, daß der Teller (e) elliptisch geformt ist (Abb. 3 und ¢).3. Injection nozzle according to claim i and 2, characterized characterized in that the plate (e) is elliptically shaped (Fig. 3 and ¢).
DESCH76543D 1926-01-01 1926-01-01 Injection nozzle for internal combustion engines Expired DE498386C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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