DE2751513A1 - Fuel injector system for Diesel engine with auxiliary jet - has jet of oil produced by channel joined to mouth of central bore - Google Patents

Fuel injector system for Diesel engine with auxiliary jet - has jet of oil produced by channel joined to mouth of central bore

Info

Publication number
DE2751513A1
DE2751513A1 DE19772751513 DE2751513A DE2751513A1 DE 2751513 A1 DE2751513 A1 DE 2751513A1 DE 19772751513 DE19772751513 DE 19772751513 DE 2751513 A DE2751513 A DE 2751513A DE 2751513 A1 DE2751513 A1 DE 2751513A1
Authority
DE
Germany
Prior art keywords
jet
central bore
mouth
fuel injector
bore
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.)
Withdrawn
Application number
DE19772751513
Other languages
German (de)
Inventor
Hans-Dieter Schmidt
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19772751513 priority Critical patent/DE2751513A1/en
Publication of DE2751513A1 publication Critical patent/DE2751513A1/en
Withdrawn legal-status Critical Current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
    • F02M61/04—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

Landscapes

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

Abstract

The fuel injector is designed for use in a compression-ignition engine. it discharges a main jet in the axial direction through a central bore in the body, and discharges on or more auxiliary jets at an acute angle to the main one. The auxiliary jet is produced by a channel (4) emanating from the central bore (5), and connected to it at the bore mouth. The design avoids the tendency for sooting up, as happens when the auxiliary jet is discharged through a separate drilling.

Description

"Drosselzapfen-Einspritzventil""Throttle Pin Injector"

Die Erfindung bezieht sich auf ein Drosselzapfen-Einspritzventil für eine luftverdichtende Brennkraftmaschine, mit der ein Hauptstrahl an Kraftstoff durch eine zentrale Bohrung im Ventilkörper in Achsrichtung des Einspritzventiles und mindestens ein nebenstrahl in einem spitzen Winkel dazu abgespritzt wird.The invention relates to a throttle pin injection valve for an air-compressing internal combustion engine, with which a main jet of fuel through a central hole in the valve body in the axial direction of the injection valve and at least one secondary jet is sprayed off at an acute angle to it.

Bei Einspritzventilen dieser Art wird der Nebenstrahl, der zum Beispiel bei Vorkammermaschinen auf eine bestimmte Fläche innerhalb der Vorkammer gerichtet ist, durch eine besondere Bohrung im Ventilkörper abgespritzt. Hierbei ist besonders nachteilig, daß sich diese Bohrung, deren Durchmesser nur einen Bruchteil des Durchmessers der zentralen Bohrung beträgt, unter bestimmten Betriebszuständen der Brennkraftmaschine zeitweise mit Ruß zusetzt und unwirksam wird.In injectors of this type, the secondary jet, for example in pre-chamber machines directed to a certain area within the pre-chamber is sprayed through a special hole in the valve body. This is special disadvantageous that this bore, the diameter of which is only a fraction of the diameter the central bore, under certain operating states of the internal combustion engine temporarily clogs with soot and becomes ineffective.

Aufgabe der Erfindung ist es, diesen Nnciiteil zu beseitigen.The object of the invention is to eliminate this inconvenience.

Erfindungsgemäß wird dicse Aufgabe dadurch gelöst, dn fiir den Nebestrahl ein von der Umfangswandung der zentralen Bohrung ausgehender und mit dieser bis zur Mündung der Bohrung in Verbidung stehender Kanal vorgesehen ist.According to the invention, this object is achieved by dn for the secondary jet one starting from the circumferential wall of the central bore and with this up to at the mouth of the bore in connection standing channel is provided.

Durch die Erfindung wird eine einseitige Erweiterung der zentralen Bohrung erzielt, die zusammen mit der zentralen Bohrung von der Hauptmenge Kraftstoff durchströmt wird, so daß sich Rußablagerungen nicht bilden können. Das Abspritzen eines Nebenstrahles mit einer Teilmenge Kraftstoff in der gewünschten Richtung bleibt voll erhalten.The invention is a one-sided expansion of the central Hole obtained, which together with the central hole of the main amount of fuel is flowed through, so that soot deposits cannot form. The hosing down of a secondary jet with a partial amount of fuel in the desired amount Direction is fully retained.

In der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel dargestellt. Es zeigen: Fig. 1 einen Längsschnitt durch einen Ventilkörper im Abspritzbereich und Jig. 2 eine Ansicht auf den Ventilkörper gemaß Pfeilrichtung 11 aus Fig. 1.In the drawing, the subject matter of the invention is in one embodiment shown. The figures show: FIG. 1 a longitudinal section through a valve body in the spray-off area and jig. 2 shows a view of the valve body in the direction of arrow 11 from FIG. 1.

Nach den Fig. 1 uiid 2 ist der Ventilkörper 1 eines Drasselzapfen-Einspritzventiles für eine luftverdichtende Brennkraftmaschine im Abspritzbereich im Anschluß an einen Dichtkegel @ für die Ventilnadel mit einer zentralen Bohrung 3 versehen.According to FIGS. 1 and 2, the valve body 1 is a throttle pin injection valve for an air-compressing internal combustion engine in the injection area following a Provide the sealing cone @ for the valve needle with a central hole 3.

Durch die Bohrung 3 tritt beim Abspritzen von Kraftstoff der Hauptstrahl aus. Zum Abspritzen eines nebestrahles an Kreftstoff unter dem Winkel α ist anstelle einer besonderen Bohrung ein Kanal 4 vorgesehen, der von der Umfaungswandung der Bohrung 3 ausgeht und mit der Bohrung bis zu deren Mündung in Verbindung steht.When fuel is sprayed off, the main jet passes through the bore 3 the end. For spraying off a fog jet of fuel at the angle α is instead of a special bore, a channel 4 is provided which extends from the surrounding wall the bore 3 goes out and is in communication with the bore up to its mouth.

Beim Abspritzen von Kraftstoff strömt sowohl durch die Bohrung 3 als auch durch den mit ihr zusammenhängenden Kanal 4 die Hauptmenge Kraftstoff, so daß sich im Kanal keine Rußablagerungen festsetzen können.When spraying fuel flows through both the bore 3 and also through the channel 4 connected to it, the main amount of fuel, so that no soot deposits can settle in the sewer.

LeerseiteBlank page

Claims (1)

Patentanspruch Drosselzapfen-Einspritzventil für eine luftverdichtende Brennkraftmaschine, mit der ein Hauptstrahl an Kraftstoff durch eine zentrale Bohrung im Ventilkörper in Achsrichtung des Einspritzventiles und mindestens ein Nebenstrahl in einem spitzen Winkel dazu abgespritzt wird dadurch gekennvon zeichnet, daß für den Nebenstrahl ein/ der Umfangswandung der zentralen Bohrung (3) ausgehender und mit dieser @i@ zur Mündung der Bohrung in Verbindung stehender Kanal (4) vorgesehen ist.Claim throttle pin injection valve for an air-compressing Internal combustion engine, with which a main jet of fuel through a central bore in the valve body in the axial direction of the injection valve and at least one secondary jet hosed at an acute angle to it is characterized by the fact that for the secondary beam on / the circumferential wall of the central bore (3) outgoing and with this @ i @ channel (4) connected to the mouth of the bore is provided is.
DE19772751513 1977-11-18 1977-11-18 Fuel injector system for Diesel engine with auxiliary jet - has jet of oil produced by channel joined to mouth of central bore Withdrawn DE2751513A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772751513 DE2751513A1 (en) 1977-11-18 1977-11-18 Fuel injector system for Diesel engine with auxiliary jet - has jet of oil produced by channel joined to mouth of central bore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772751513 DE2751513A1 (en) 1977-11-18 1977-11-18 Fuel injector system for Diesel engine with auxiliary jet - has jet of oil produced by channel joined to mouth of central bore

Publications (1)

Publication Number Publication Date
DE2751513A1 true DE2751513A1 (en) 1979-05-23

Family

ID=6024020

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772751513 Withdrawn DE2751513A1 (en) 1977-11-18 1977-11-18 Fuel injector system for Diesel engine with auxiliary jet - has jet of oil produced by channel joined to mouth of central bore

Country Status (1)

Country Link
DE (1) DE2751513A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926050C (en) * 1946-08-28 1955-04-04 Sir Harry Ralph Ricardo Cone nozzle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926050C (en) * 1946-08-28 1955-04-04 Sir Harry Ralph Ricardo Cone nozzle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DD-Zeitschrift, Kraftfahrzeugtechnik, H.5, Mai 1952, S.149 *

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