DE435334C - Injection valve with cylindrical needle extension for airless injection - Google Patents

Injection valve with cylindrical needle extension for airless injection

Info

Publication number
DE435334C
DE435334C DEN24286D DEN0024286D DE435334C DE 435334 C DE435334 C DE 435334C DE N24286 D DEN24286 D DE N24286D DE N0024286 D DEN0024286 D DE N0024286D DE 435334 C DE435334 C DE 435334C
Authority
DE
Germany
Prior art keywords
injection
valve
cylindrical needle
airless
needle extension
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
DEN24286D
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 DEN24286D priority Critical patent/DE435334C/en
Application granted granted Critical
Publication of DE435334C publication Critical patent/DE435334C/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
    • F02M61/08Fuel-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 opening in direction of fuel flow

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

Einspritzventil mit zylindrischem Nadelfortsatz für luftlose Einspritzung. Es sind Einspritzventile mit zylindrischem Nadelfortsatz bekannt geworden, die durch Anschmiegen des Brennstoffstrahles an diesen eine bestimmte Strahlform. und -führung zu erzielen suchen. Demgegenüber kennzeichnet sich die Erfindung daadlrch, daß der zylindrische Nadelfortsatz in einem hohlzylindrischen Teil des Ventilkörpers möglichst dichtend. geführt und auf der Oberfläche mit feinen Rillen versehen ist, welche das Austreten des Brennstoffes in beliebig vielen Einzelstrahlen erzwingen. Durch eine derartige Anordnung erden die Vorteile der Mehrlochdüse erreicht, ihre Nachteile aber vermieden; insbesondere entstehen bessere Bearbeitungs- und Reinigungsmöglichkeiten. Die von der Hubhöhe unabhängige, feinste Bemeßbarkeit der -Strahlquerschnitte verbindet sich in vorteilhafter Weise mit dem Fortfall von Leckverlusten und der Vermeidung von jeglicher Stopfbwchsenreibung.Injection valve with cylindrical needle extension for airless injection. Injectors with a cylindrical needle extension are known which are made by The fuel jet snuggles up to this a certain shape of the jet. and leadership seek to achieve. In contrast, the invention is characterized by the fact that the cylindrical needle extension in a hollow cylindrical part of the valve body as possible sealing. and is provided with fine grooves on the surface, which Force the escape of the fuel in any number of individual jets. By Such an arrangement achieves the advantages of the multi-hole nozzle, its disadvantages but avoided; in particular, there are better processing and cleaning options. The finest measurability of the beam cross-sections, which is independent of the lifting height, connects in an advantageous manner with the elimination of leakage losses and the avoidance of them from any friction of the stuffing box.

Die Zeichnung stellt ein Ausführungsbeispiel dar. Im Zylinderdeckel a eines Dieselmotors mit luftloser Einspritzung ist in üblicher Weise. ein. Brennstoffdüseneinsatz b gelagert. In. diesen ist ein Brennstoffventil d so eingebaut, daß . es - nach dem Zylinderinnern. zu öffnet und durch eine starke Feder e für gewöhnlich auf seinen Sitz gezogen wird. An das Ventil schließt sich nach dem Zylinderinnern zu en zylindrischer kolbenähnlicher Fortsatz f an, der in. -einer Höhlung i des Einsatzes möglichst dichtend geführt ist. Auf der Oberfläche befinden sich feine Rillen h. Desgleichen ist der Ventilschaft d mit breiten Rillen. versehen, damit das oberhalb des Ventils zugeführte Brennöl am Ventilschaft entlang dem Ventilsitz zufließen kann.The drawing shows an embodiment. In the cylinder cover a of a diesel engine with airless injection is in the usual way. a. Fuel nozzle insert b stored. In. this is a fuel valve d installed so that. it - after the cylinder interior. to open and is usually pulled onto its seat by a strong spring e. After the inside of the cylinder, a cylindrical piston-like extension f adjoins the valve, which is guided in a cavity i of the insert so as to be as sealing as possible. There are fine grooves h on the surface. Likewise, the valve stem d has wide grooves. provided so that the fuel oil supplied above the valve can flow along the valve seat on the valve stem.

Der Eintritt des Brennöles erfolgt durch das Rohr k, an das die nicht gezeichnete Brennsteffpumpe angeschlossen ist.The entry of the fuel oil takes place through the pipe k, to which the not drawn fuel pump is connected.

Die Wirkung ist die folgende: Beim Druckhub der Brennstoffpumpe wird das Ventil aufgedrückt. Das Öl gelangt durch den Sitz hindurch, tritt aber nicht an der ganzen Fläche, sondern nur durch die Rillen h in, fieinen Strahlen in den Zylinder eint. Zwar schließt der Fortsatz f in der Bohrung i nicht vollständig dicht, da aber der Widerstand in dien ' Rillen kleiner ist als an dem glatten Umfange des Fortsatzes f, wird der Austritt des Öles nur durch die Rillernh erfolgen. Im übrigen hat man es in der Hand:, durch genügiende Länge des Fortsatzes f die Berührungsfläche zwischen diesem und der Höhlung i so zu vergräß-ern, daß eine genügende Labyrin;thdichtung an allen Stellen des Umfanges mit Ausnahme der Rillen geschaffen wird.The effect is as follows: During the pressure stroke of the fuel pump, the valve pushed open. The oil passes through the seat but does not step on the whole surface, but only through the grooves in, fieein rays in the Cylinder unites. Although the extension f does not close completely tightly in the bore i, but since the resistance in the grooves is smaller than on the smooth circumference of the Continuation f, the oil will only escape through the Rillernh. Furthermore if you have it in your hand: the contact surface by sufficient length of the extension f between this and the cavity i to be enlarged so that a sufficient labyrin; th seal is created at all points of the circumference with the exception of the grooves.

Abb. a zeigt leine geänderte Ausführungsform teilweise im Schnitt durch den Unteren Test. der Einspritzvorrichtung. Bei ihr sind die Rillen schräg oder, genauer gesprochen, schraubenförmig ausgeführt. Infolgedessen werden die Brennstoffstrahlen schräg in den Zylinder hinein. gerichtet und daher nach allen Seiten, hin. auf einem großen Streukegel verteilt, s,o daß dadurch die Wirkuaig einer Mehrlochdüse mit brausenaxtig gestellten Bohrung-ed ierreicht wird.Fig. A shows a modified embodiment partially in section through the lower test. the injector. Her grooves are sloping or, more precisely, executed helically. As a result, the fuel jets become obliquely into the cylinder. directed and therefore in all directions. on one large scatter cone distributed, s, o that thereby the effect of a multi-hole nozzle with drilled hole-ed is reached.

Claims (1)

PATENT-ANSPRÜcHE: i. Einspritzventil mit zylindrischem Na,delforfisatz für luftlose Einspritzung, dadurch gekennzeichnet, daß der zylindrische Nadelfortsatz in seinem hohlzylindrischen Teil des Ventilkörpers möglichst dichtend geführt und auf der Oberfläche mit feinen Rillen. @) versehen ist, welche das Aus-, treten des Brennstoffes in beliebig vielen Einzelstrahlen erzwingen. z. Einspritzventil nach Anspruch i, gekennzeichnet durch Schrägstellung der Rillen (h), so daß die austretenden Brennstoffstrahlen auf einem Kegelmantel im Brennraum verteilt werden (Abb. z). PATENT CLAIMS: i. Injection valve with cylindrical needle valve set for airless injection, characterized in that the cylindrical needle extension is guided in its hollow cylindrical part of the valve body so as to be as sealing as possible and on the surface with fine grooves. @) is provided, which force the exit of the fuel in any number of individual jets. z. Injection valve according to Claim i, characterized by the inclined position of the grooves (h) so that the exiting fuel jets are distributed over a conical surface in the combustion chamber (Fig. Z).
DEN24286D 1925-03-07 1925-03-07 Injection valve with cylindrical needle extension for airless injection Expired DE435334C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN24286D DE435334C (en) 1925-03-07 1925-03-07 Injection valve with cylindrical needle extension for airless injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN24286D DE435334C (en) 1925-03-07 1925-03-07 Injection valve with cylindrical needle extension for airless injection

Publications (1)

Publication Number Publication Date
DE435334C true DE435334C (en) 1926-10-11

Family

ID=7342947

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN24286D Expired DE435334C (en) 1925-03-07 1925-03-07 Injection valve with cylindrical needle extension for airless injection

Country Status (1)

Country Link
DE (1) DE435334C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830591C (en) * 1939-06-13 1952-02-07 Daimler Benz Ag Injection nozzles, in particular for internal combustion engines
DE916244C (en) * 1940-09-17 1954-08-05 Daimler Benz Ag Fuel injector
WO1986000668A1 (en) * 1984-07-03 1986-01-30 Baralaba Pty Ltd Fuel injector
DE4006488A1 (en) * 1990-03-02 1991-09-05 Daimler Benz Ag Fuel injection nozzle body - has compression ignition engine and longitudinal slit formed in side of piston
DE4017391A1 (en) * 1990-05-30 1991-12-12 Man Nutzfahrzeuge Ag CROSS-SECTIONAL MULTI-JET INJECTION NOZZLE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830591C (en) * 1939-06-13 1952-02-07 Daimler Benz Ag Injection nozzles, in particular for internal combustion engines
DE916244C (en) * 1940-09-17 1954-08-05 Daimler Benz Ag Fuel injector
WO1986000668A1 (en) * 1984-07-03 1986-01-30 Baralaba Pty Ltd Fuel injector
DE4006488A1 (en) * 1990-03-02 1991-09-05 Daimler Benz Ag Fuel injection nozzle body - has compression ignition engine and longitudinal slit formed in side of piston
DE4017391A1 (en) * 1990-05-30 1991-12-12 Man Nutzfahrzeuge Ag CROSS-SECTIONAL MULTI-JET INJECTION NOZZLE

Similar Documents

Publication Publication Date Title
DE69500878T2 (en) Pressure valve
EP0354905B1 (en) Fuel injection nozzle for internal combustion engines
DE19547423B4 (en) Fuel injection valve for internal combustion engines
DE68910775T2 (en) Fuel injector with variable fuel spray shape.
EP1181445B1 (en) Fuel injection valve for internal combustion engines
DE19755057A1 (en) Fuel injection nozzle for self-igniting internal combustion engines
DE3107826A1 (en) FUEL INJECTION DEVICE OPERATED BY THE COMPRESSION PRESSURE FOR INTERNAL COMBUSTION ENGINES
DE2749378A1 (en) FUEL INJECTOR
DE435334C (en) Injection valve with cylindrical needle extension for airless injection
DE2301744A1 (en) FUEL INJECTOR
DE3734587A1 (en) Fuel injection nozzle for internal combustion engines
DE3810467C2 (en)
DE10319980A1 (en) Fuel injector for diesel vehicles adds closed base to hollow needle to cover all injection ports as linked to inner needle via groove-issuing connection hole.
DE102004044820A1 (en) Fuel injection valve for direct injection of fuel into combustion chamber of internal combustion engine, has nozzle body with castellated structure around its periphery
EP1471249B1 (en) Device for damping the closing of an injector needle of a fuel injector
DE3843840C2 (en)
DE2809414C2 (en) Fuel injection valve for an air-compressing internal combustion engine
DE2726300A1 (en) IC engine fuel injection nozzle - in which most of needle valve closing force is exerted by fuel
DE3740283A1 (en) Injection valve
AT394760B (en) Fuel injection nozzle for internal combustion engines
AT394761B (en) FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
EP0118816B1 (en) Fuel injection nozzle for internal-combustion engines
DE19930832A1 (en) Fuel injector
DE2052311C3 (en) Fuel injector for internal combustion engines
EP0351631B1 (en) Control device for a fuel injection nozzle