DE7025384U - FUEL INJECTION VALVE FOR PISTON ENGINE WITH PRE-INJECTION AND MAIN INJECTION. - Google Patents

FUEL INJECTION VALVE FOR PISTON ENGINE WITH PRE-INJECTION AND MAIN INJECTION.

Info

Publication number
DE7025384U
DE7025384U DE7025384U DE7025384U DE7025384U DE 7025384 U DE7025384 U DE 7025384U DE 7025384 U DE7025384 U DE 7025384U DE 7025384 U DE7025384 U DE 7025384U DE 7025384 U DE7025384 U DE 7025384U
Authority
DE
Germany
Prior art keywords
shut
injection
fuel
needle
hollow
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
DE7025384U
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DE7025384U priority Critical patent/DE7025384U/en
Publication of DE7025384U publication Critical patent/DE7025384U/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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Maschrnenfabrik Augsburg-Nürnberg Aktiengesellschaft 89 Augsburg, Stadtbachstrafle 1Maschrnenfabrik Augsburg-Nürnberg Aktiengesellschaft 89 Augsburg, Stadtbachstrafle 1

G 70 I , 384.8G 70 I , 384.8

(Gm. B. 980) Augsburg, den 21. Mai 1971(Gm. B. 980) Augsburg, May 21, 1971

Brenne toff-Einspritzventil für Kolbenbvenskraft« maschinen mit Vor- und HaupteinspritzungFuel injection valve for piston force « machines with pilot and main injection

Die Neuerung betrifft eia Brennstoff-Einspritzventil für Kolbenbrennkraftmaschinen mit mehreren, getrennt gesteuerten 12nd bei unterschiedlichen Betriebebedingungen öffnenden Einspritssystemen, bei dem um ein nadeiförmiges Abeperrelement herum wenigstens ein weiteres hohlzylindrisches Absperrelement konzentrisch angeordnet ist, wobei jedes Absperreleaoent zur Steuerung d*»r Breni .stoffzufuhr für je ein separat gesteuertes System von Düsenbohrungen vorgesehen ist.The innovation concerns a fuel injection valve for piston internal combustion engines with several, separately controlled 12nd injection systems that open under different operating conditions the at least one further hollow cylindrical shut-off element arranged concentrically around a needle-shaped shut-off element is, with each shut-off relay for controlling the fuel supply intended for a separately controlled system of nozzle bores is.

Eine derartige Anordnung ist beispielsweise aus der amerikanischen Patentschrift 1 834 061 bekannt. Dabei bildet jedes Abeperrelement einen Dichtsitz mit einem festen Teil des Düesakörper», so da* durch. die Führung des inneren nadelförsaigen Absperrelerottmts im hohlsy lindrischen äußeren Absperr element eine Doppelp&ssung vorliegt» die eine exakte Führung des inneren nadeiförmigen Absperrelements relativ zu seinem Dichtsitz im Düsenkörper erschwert.Such an arrangement is for example from the American Patent specification 1,834,061 known. Each barrier element forms a sealing seat with a fixed part of the nozzle body », so there * through. the management of the inner needle-like shut-off valve in the hohlsy Lindrian outer shut-off element there is a double flush an exact guidance of the inner needle-shaped shut-off element relative to its sealing seat in the nozzle body is difficult.

702538^12.8.71702538 ^ 12.8.71

ιοί. oanrr «iio Äuigäüo wi ncusitüufj, ääa IDutötöuöu SOiCiiSr -fach»ιοί. oanrr «iio Äuigäüo wi ncusitüufj, ääa IDutötöuöu SOiCiiSr -subject"

Doppel- oder Mehrpassungen bei Einspritzventilen der eingangs bezeichneten Art zu vermeiden.Double or multiple fits in injection valves of the type mentioned at the beginning Kind of avoid.

Diese Aufgabe wird gemäß der Neuerung dadurch gelöst, daß das nadelförmige Absperrelement bereite oberhalb des Sitzes des ihn umgebenden hohlzylindrischen Absperrelements endet, so daß lediglich das am weitesten auße&jliegende hohlzylindrische Absperrelement in seiner Schließstellung am Ventilkörper in einem konischen Dicht-β it ζ aufliegt, während die weiter innen/Liegenden Abeperrelemente vollständig in dem jeweils weiter außenjliegenden Absperrelement gelagert sind.This object is achieved according to the innovation in that the needle-shaped Shut-off element ready above the seat of the hollow-cylindrical shut-off element surrounding it ends, so that only the furthest out & present hollow cylindrical shut-off element in its closed position on the valve body in a conical seal-β it ζ rests on, while the barrier elements further inside / lying completely are stored in the shut-off element located further out.

Ein Ausführungebeispiel der Neuerung wird nachstehend anhand der Zeichnung beschrieben.An exemplary embodiment of the innovation is described below with reference to the drawing.

Ein Ventilkörper 1 um schließt ein nadeiförmiges inneres Absperrelement 2 und ein äußeres hohlzylindrisches Absperrelement 3, in welchem das nadeiförmige Absperrelement 2 vollständig gelagert ist. Durch eine Zuleitung 4 gelangt Brennstoff in einen das äußere hohlzylindrische Abiperrelemeni 3 umgebenden Sammelraum 5, von wo er durch Bohrungen 6 durch die Wand des Absperrelements 3 hindurch und über einen das nadelförmige Absperrelement 2 umgebenden Zugang 7 einen Ringraum 8 erreicht, welcher in der dargestellten Weise die Spitze des nadeiförmigen Absperrelements 2 oberhalb seines Dichtsitzes 9 ti» hohlzylindrischen Abaperrelement 3 umgibt. Über die Zuleitung 10 gelangt für die Haupteinepritzung Brennstoff unmittelbar in einen Ringraum 11, welche? die Spitze des hohlzylindrischen Absperrelements 3 oberhalb seines Dichtsitzes 12 umgibt.A valve body 1 includes a needle-shaped inner shut-off element 2 and an outer hollow cylindrical shut-off element 3, in which the needle-shaped shut-off element 2 is completely supported. By a Feed line 4 reaches fuel into a collecting space 5 surrounding the outer hollow cylindrical Abiperrelemeni 3, from where it is fed through bores 6 through the wall of the shut-off element 3 and via an access 7 surrounding the needle-shaped shut-off element 2 Annular space 8 is reached, which in the manner shown the tip of the needle-shaped shut-off element 2 above its sealing seat 9 ti »hollow cylindrical Abaperrelement 3 surrounds. About the supply line 10, for the main injection, fuel arrives directly in an annular space 11, which one? the tip of the hollow cylindrical shut-off element 3 surrounds above its sealing seat 12.

Bei ansteigendem Brennstoffdruck hebt nun zunächst das nadeiförmige Abs pe rr element 2 von seinem Dichtsitz 9 ab, wodurch der Brennstoff über n.vn& zentrale Bohrung 13 und ein Sackloch 14 im Düsenträger 15 die Düsenöffnungen 16 erreichen kann. Bei weiter ansteigendem Brennstoffdruck hebt auch das hohl zylindrische Ab-• perrelement 3 von seinem Dichte it ε 12 ab, wodurch für den im Ringraum 11 anstehenden Brennstoff der Zugang zur Verbindungsleitung 17, zu einem Ringkanal 18 im Düsenträger 15 und damit su Düsenbohrungen 19 freigegeben vrird. Gleichzeitig wird auch der Zugang vom Ringraum 11 in das Sackloch 9 frei.When the fuel pressure rises, the needle-shaped Abs pe rr element 2 first lifts from its sealing seat 9, whereby the fuel can reach the nozzle openings 16 via n .vn & central bore 13 and a blind hole 14 in the nozzle carrier 15. When the fuel pressure continues to rise, the hollow cylindrical shut-off element 3 also lifts from its density it ε 12, whereby access to the connecting line 17, to an annular channel 18 in the nozzle carrier 15 and thus nozzle bores 19 is released for the fuel in the annular space 11 . At the same time, access from the annular space 11 into the blind hole 9 is also free.

Die an sich schon geringe Baubreite dieser Anordnung könnte weiter reduziert werden, wenn auf die Zuleitungen 4 und 10 für den Brennstoff im Material des Ventilkörpers 1 verzichtet wird, und statt dessen die Brennstoffzuführung durch das nadeiförmige Absperrelement 2 hindurch vorgenommen wird. Der im Ringraum 8 anstehende Brennstoff könnte in diesem Falle durch einfach herzustellende Verbindung β bohrungen in dem hohlzylindrischen Absperrelement 3 in den Ringraum 11 gelangen.The already small overall width of this arrangement could be further be reduced if on the feed lines 4 and 10 for the fuel in the material of the valve body 1 is dispensed with, and instead the fuel supply through the needle-shaped shut-off element 2 is made through. In this case, the fuel in the annular space 8 could be produced by a connection that is easy to produce β holes in the hollow cylindrical shut-off element 3 in reach the annular space 11.

Claims (1)

A η β ρ γA η β ρ γ Brennstoff-Einspritzventil für Kolbenbrennkraftmaschinen mit mehreren, getrennt gesteuerten und bei unterschiedlichen Betriebsbedingungen öffnenden Einspritz system, bei dem nm ein nadeiförmiges Absperrelement herum wenigstens ein weiteres hohlzylindrisches Absperrelement konzentrisch angeordnet ist, wobei jedes Absperrlement zur Steuerung der Brennstoffzufuhr für je ein separat gesteuertes System von Düsenbohrungen vorgesehen ist, dadurch gekennzeichnet, daß das nadeiförmige Absperreleraent (2) bereits oberhalb des Sitzes des ihn umgebenden hohlzylindrischen Absperrelements (3) endet, so daß lediglich das am weitesten außenufegende hohlzylindrische Absperrelement (3) in seiner Schließstellung axn Ventilkörper (l) in einem konischen Dicht-β it ζ (12) aufliegt, während die weiter innnnßiegenden Ab-0perrelemente (2) vollständig in dem jeweils weiter außen liegenden Absperrelement (3) gelagert sind.Fuel injection valve for piston internal combustion engines with several, separately controlled injection systems that open under different operating conditions, in which a needle-shaped shut-off element is arranged concentrically around at least one further hollow-cylindrical shut-off element, each shut-off element being provided to control the fuel supply for a separately controlled system of nozzle bores is, characterized in that the needle-shaped shut-off element (2) already ends above the seat of the hollow-cylindrical shut-off element (3) surrounding it, so that only the most outer hollow-cylindrical shut-off element (3) in its closed position axn valve body (l) in a conical seal -β it ζ (12) rests, while the further inner blocking elements (2) are completely supported in the respective further outer blocking element (3).
DE7025384U 1970-07-07 1970-07-07 FUEL INJECTION VALVE FOR PISTON ENGINE WITH PRE-INJECTION AND MAIN INJECTION. Expired DE7025384U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE7025384U DE7025384U (en) 1970-07-07 1970-07-07 FUEL INJECTION VALVE FOR PISTON ENGINE WITH PRE-INJECTION AND MAIN INJECTION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7025384U DE7025384U (en) 1970-07-07 1970-07-07 FUEL INJECTION VALVE FOR PISTON ENGINE WITH PRE-INJECTION AND MAIN INJECTION.

Publications (1)

Publication Number Publication Date
DE7025384U true DE7025384U (en) 1971-08-12

Family

ID=34174649

Family Applications (1)

Application Number Title Priority Date Filing Date
DE7025384U Expired DE7025384U (en) 1970-07-07 1970-07-07 FUEL INJECTION VALVE FOR PISTON ENGINE WITH PRE-INJECTION AND MAIN INJECTION.

Country Status (1)

Country Link
DE (1) DE7025384U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944339A1 (en) * 1979-11-02 1981-05-14 Volkswagenwerk Ag, 3180 Wolfsburg IC engine with two spark plugs per cylinder - has fuel injector directing separate fuel jets at plugs during idling
DE2759403C2 (en) * 1977-09-01 1988-09-29 Gebrueder Sulzer Ag, Winterthur, Ch
DE4419185A1 (en) * 1994-06-01 1995-12-07 Man Nutzfahrzeuge Ag Injection valve for air-compressing internal combustion engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759403C2 (en) * 1977-09-01 1988-09-29 Gebrueder Sulzer Ag, Winterthur, Ch
DE2944339A1 (en) * 1979-11-02 1981-05-14 Volkswagenwerk Ag, 3180 Wolfsburg IC engine with two spark plugs per cylinder - has fuel injector directing separate fuel jets at plugs during idling
DE4419185A1 (en) * 1994-06-01 1995-12-07 Man Nutzfahrzeuge Ag Injection valve for air-compressing internal combustion engines

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