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DE489509C - Injection nozzle for internal combustion engines - Google Patents

Injection nozzle for internal combustion engines

Info

Publication number
DE489509C
DE489509C DED58356D DED0058356D DE489509C DE 489509 C DE489509 C DE 489509C DE D58356 D DED58356 D DE D58356D DE D0058356 D DED0058356 D DE D0058356D DE 489509 C DE489509 C DE 489509C
Authority
DE
Germany
Prior art keywords
nozzle
needle
combustion engines
membrane
internal combustion
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
DED58356D
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.)
FRIEDR DECKEL
MASCHB
PRAEZ SMECHANIK
Original Assignee
FRIEDR DECKEL
MASCHB
PRAEZ SMECHANIK
Publication date
Priority to DED58356D priority Critical patent/DE489509C/en
Application granted granted Critical
Publication of DE489509C publication Critical patent/DE489509C/en
Expired legal-status Critical Current

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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • 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
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • 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

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 Gggenstand vorlieg oder Erfindung ist eine durcK den ' für Brennskdruck Ver ,er e(nnungskraftmaschinen, gesteüerte Ein- insbesöndere .nvt.- tloser Einspritzung, bei welcher die.-,, #tung des 'Düsenraumes gegen den Düsenkörper durch eine mit der Düsennadel verbundene Membran erfolgt. Bei den bekannten Ausführungen dieser Art ist die Düsennadel in besonderen festen Lagern starr geführt. Dies hat aber den Nachteil, daß der erforderliche dichte Sitz der Nadel im Düsenplättchen nur schwer zu erreichen ist.Injection nozzle for internal combustion engines Subject matter of the present or invention is one through the 'for combustion pressure Ver, er e (nominal engines, controlled input in particular .nvt.- free injection, at which the.- ,, # respect of the 'nozzle space takes place against the nozzle body through a membrane connected to the nozzle needle. In the known designs of this type, the nozzle needle is rigidly guided in special fixed bearings. However, this has the disadvantage that the required tight fit of the needle in the nozzle plate is difficult to achieve.

Dieser Nachteil wird nach der Erfindung dadurch vermieden, daß die Düsennadel ohne Verwendung einer festen Führung lediglich an der Membran selbst gelagert ist, und zwar wird diese Lagerung in der Weise gelenkig ausgebildet, daß sich die Nadel nach Art eines freien Pendels allseitig bewegen kann. Auf diese Weise werden die Beanspruchungen der Membran auf ein Mindestmaß verringert. Eine unerwünschte Verstellung der Nadel wird der weiteren Erfindung gemäß durch eine - bewegliche Führung begrenzt, die die Düsennadel nur mit geringem Spiel umgibt und sich mit dieser seitlich verschieben kann, wobei die Möglichkeit der Verschiebung durch eine Feder gedämpft wird.This disadvantage is avoided according to the invention in that the nozzle needle is only mounted on the membrane itself without the use of a fixed guide, and this mounting is articulated in such a way that the needle can move in all directions like a free pendulum. In this way, the stresses on the membrane are reduced to a minimum. An undesired adjustment of the needle is limited according to the further invention by a movable guide which surrounds the nozzle needle with little play and can move laterally with it, the possibility of displacement being dampened by a spring.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.An exemplary embodiment of the invention is shown in the drawing.

An den Düsenkörper i wird durch eine Überwurfmutter 2 und das Zwischenstück 3 die Membran 4. angepraß , in welcher ein Stutzen 5 eingenietet ist. Die Düsennadel 6 ist an ihrem oberen Ende halbkugelig abgerundet und wird durch einem Stift 7 in einer Pfanne des Stutzens 5 gehalten. Die Bohrung für den Stift 7 ist etwas ballig ausge, bildet, damit eine allseitige Pendelbewegung möglich ist. Das untere Endei der Düsennadel ist ebenfalls halbkugelig und dichtet in der konisch ausgebildeten öffnung des Düsenplättchens B. Der Anpressungsdruck wird durch eine oberhalb der Membran angeordnete Feder 9 erzeugt und von dem Stutzen 5 auf die Nadel 6 ühertragen. Der Düsenkörper i enthält die, Brennstoffleitung io, die über ringförmige Kanäle i i, 12 und Bohrungen. 13 der Membran q. sowie Leitungen 15 mit dem Düsenvorraum 16 in Verbindung steht.` Bei einem Anstieg des Brennstoffdrukkes weicht die; Membran q. nach oben aus und hebt dadurch die Nadel 6 von dem Düsenplättchen ab, so daß der Einspritzvorgang beginnt. Beim Nachlassem des Brennstoffdruckes kann sieh die Nadel- -infolge ihrer pendelndem Aufhängung selbsttätig in. der Bohrung des Düsenplä.ttchezs zentrieren. Damit beim Anliebean unnötige Pendelbewegungen verhindeirt werden, ist das untere Ende der Nadel in der Hülse 17 geführt, deren seitliche Vexschiebbarkeit durch den von einer Feder 18 erzeugten Reibungswiderstand gedämpft ist; die hierzu nötige Federspannung wird durch Versuche ermittelt. In der Hülse 17 vorgesehene öffnungen i9 gestatten den Durchtritt des Brennstoffs.The membrane 4, in which a connecting piece 5 is riveted, is pressed onto the nozzle body i by means of a union nut 2 and the intermediate piece 3. The nozzle needle 6 is rounded hemispherically at its upper end and is held in a socket of the connector 5 by a pin 7. The hole for the pin 7 is somewhat convex, forms so that an all-round pendulum movement is possible. The lower end of the nozzle needle is also hemispherical and seals in the conical opening of the nozzle plate B. The contact pressure is generated by a spring 9 arranged above the membrane and transmitted from the connector 5 to the needle 6. The nozzle body i contains the fuel line io, which has annular channels ii, 12 and bores. 13 of the membrane q. as well as lines 1 5 with the nozzle antechamber 16 is in connection.` When the fuel pressure rises, the; Membrane q. upwards and thereby lifts the needle 6 from the nozzle plate, so that the injection process begins. When the fuel pressure drops, the needle can automatically center in the bore of the nozzle plate due to its pendulous suspension. So that unnecessary pendulum movements are prevented when the patient is in love, the lower end of the needle is guided in the sleeve 17, the lateral displacement of which is dampened by the frictional resistance generated by a spring 18; the spring tension required for this is determined through experiments. Openings 19 provided in the sleeve 17 allow the fuel to pass through.

Claims (2)

PATENTANSPRÜCHE: i. Durch den Brennstoffdruck gesteuerte Einspritzdüse für Verbreinnungskraftmaschinen, insbesondere mit luftloser Einspritzung, bei welcher eine Membran zur Abdichtung des Düsenvorraums dient, dadurch. gekennzeichnet, daß, die Düsennadel an der Membran derart gelenkig gelagert ist, daß sie sich nach Art eines freien Pendels allseitig bewegen kann. PATENT CLAIMS: i. Injector controlled by fuel pressure for combustion engines, especially with airless injection, in which a membrane is used to seal the nozzle vestibule, thereby. characterized that, the nozzle needle is articulated on the membrane in such a way that it can be moved according to Art a free pendulum can move in all directions. 2. Einspritzdüse nach Anspruch i, dadurch gekennzeichnet, daß, die Beweglichkeit der Düsennadel durch eine federbelastete Führungshülse gedämpft ist.2. Injection nozzle according to claim i, characterized characterized in that the mobility of the nozzle needle by a spring-loaded Guide sleeve is damped.
DED58356D Injection nozzle for internal combustion engines Expired DE489509C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED58356D DE489509C (en) Injection nozzle for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED58356D DE489509C (en) Injection nozzle for internal combustion engines

Publications (1)

Publication Number Publication Date
DE489509C true DE489509C (en) 1930-01-17

Family

ID=7057401

Family Applications (1)

Application Number Title Priority Date Filing Date
DED58356D Expired DE489509C (en) Injection nozzle for internal combustion engines

Country Status (1)

Country Link
DE (1) DE489509C (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639193A (en) * 1947-02-05 1953-05-19 American Bosch Corp Fuel injection device
DE913369C (en) * 1951-04-10 1954-06-10 Bruno Tavola Injection nozzles for liquids, in particular for fuels for operating internal combustion engines
DE925436C (en) * 1952-03-25 1955-03-21 Georg Dipl-Ing Groetsch Lossless injection nozzle, especially for internal combustion engines
US2865675A (en) * 1956-04-13 1958-12-23 Vernon D Roosa Fuel injection nozzle
DE1090031B (en) * 1956-04-13 1960-09-29 Roosa Vernon D Fuel injector for internal combustion engines
DE1102482B (en) * 1958-06-14 1961-03-16 Motorpal Jihlava Np Fuel injection nozzle for internal combustion engines
DE1212352B (en) * 1960-02-20 1966-03-10 Orange G M B H L Fuel injection valve with fuel-controlled valve needle
US3958757A (en) * 1974-04-13 1976-05-25 Daimler-Benz Aktiengesellschaft Injection valve
DE2929032A1 (en) * 1978-11-30 1980-06-04 Aisan Ind FUEL DELIVERY DEVICE FOR AN INTERNAL COMBUSTION ENGINE WITH FUEL INJECTION

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639193A (en) * 1947-02-05 1953-05-19 American Bosch Corp Fuel injection device
DE913369C (en) * 1951-04-10 1954-06-10 Bruno Tavola Injection nozzles for liquids, in particular for fuels for operating internal combustion engines
DE925436C (en) * 1952-03-25 1955-03-21 Georg Dipl-Ing Groetsch Lossless injection nozzle, especially for internal combustion engines
US2865675A (en) * 1956-04-13 1958-12-23 Vernon D Roosa Fuel injection nozzle
DE1090031B (en) * 1956-04-13 1960-09-29 Roosa Vernon D Fuel injector for internal combustion engines
DE1102482B (en) * 1958-06-14 1961-03-16 Motorpal Jihlava Np Fuel injection nozzle for internal combustion engines
DE1212352B (en) * 1960-02-20 1966-03-10 Orange G M B H L Fuel injection valve with fuel-controlled valve needle
US3958757A (en) * 1974-04-13 1976-05-25 Daimler-Benz Aktiengesellschaft Injection valve
DE2929032A1 (en) * 1978-11-30 1980-06-04 Aisan Ind FUEL DELIVERY DEVICE FOR AN INTERNAL COMBUSTION ENGINE WITH FUEL INJECTION

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