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WO1990005847A1 - Fuel injection nozzle for internal combustion engines - Google Patents

Fuel injection nozzle for internal combustion engines Download PDF

Info

Publication number
WO1990005847A1
WO1990005847A1 PCT/EP1989/001252 EP8901252W WO9005847A1 WO 1990005847 A1 WO1990005847 A1 WO 1990005847A1 EP 8901252 W EP8901252 W EP 8901252W WO 9005847 A1 WO9005847 A1 WO 9005847A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection nozzle
chamber
induction coil
closing spring
support
Prior art date
Application number
PCT/EP1989/001252
Other languages
German (de)
French (fr)
Inventor
Kurt Seifert
Karl Hofmann
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1990005847A1 publication Critical patent/WO1990005847A1/en

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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention is based on a fuel injection nozzle according to the preamble of claim 1.
  • a known injection nozzle of this type EP-Bl 99 991
  • the chamber formed in the nozzle holder for receiving the closing spring and the induction coil is provided with an annular shoulder which supports the closing spring with its end facing away from the valve needle and at which the chamber merges into a section with a smaller diameter, which receives the induction coil.
  • there is a diameter for the induction coil which is smaller than it should be with regard to the minimum wall thickness of the nozzle holder and which in some cases forces compromises in the design of the induction coil and the evaluation circuit.
  • the arrangement according to the invention with the characterizing features of claim 1 has the advantage that the upstream of the support for the closing spring in the nozzle holder is present. whose space can be optimally used to house the induction coil. To a certain extent, the lying support bolt divides the continuous chamber into a spring chamber and a chamber of approximately the same diameter for the induction coil and forms the spring chamber floor with its support surface.
  • FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
  • the single figure shows the injection nozzle according to the embodiment, partly in longitudinal section and partly in side view.
  • the injection nozzle has a nozzle holder 10 against which an intermediate plate 11 and a nozzle body 12 are clamped by a union nut 13.
  • a valve needle 14 is displaceably mounted in the nozzle body 12, on which a closing spring 16 acts via a pressure piece 15 and is accommodated in a chamber 17 of the nozzle holder 10.
  • the valve needle 14 cooperates with an inward-facing valve seat in the nozzle body 12 and executes its opening stroke against the direction of flow of the fuel.
  • the guide bore of the valve needle 14 is expanded at one point to a pressure chamber, in the area of which the valve needle 14 has a pressure shoulder and via channels in the intermediate disk 11 and the nozzle holder 10, and via a filter 19 with a fuel connection piece 20 of the nozzle senhalters 10 is connected.
  • valve Needle 14 attacking fuel pressure pushes the valve needle 14 upward against the force of the closing spring 16 until a shoulder 21 on the valve needle 14 abuts the lower end face of the intermediate plate 11 and limits the further upward stroke of the valve needle 14.
  • the closing spring 16 is supported by a spring washer 24 on the flat bottom surface 25 of a recess 26 of a support bolt 27 which is rotatably mounted in a blind bore 28 of the nozzle holder 10.
  • the blind bore 28 is sealed to the outside by an O-ring which is embedded in an annular groove of the support bolt 27.
  • the chamber 17 of the nozzle holder 10 continues, crossing the blind bore 28, with a slightly reduced diameter up to a housing shoulder 29.
  • an induction coil 30 which is part of a needle movement sensor, which is used to detect the start of injection and / or the injection stroke or the injection duration.
  • the induction coil 30 has a coil body 31 which is connected to a flange part 32 made of magnetically conductive material and touching the wall of the chamber 17.
  • the flange part 32 is provided with a central bore through which an anchor bolt 33, which dips into the coil former 31, is guided with a slight radial play.
  • the anchor bolt 33 can be connected to the pressure piece 15 in one piece or via an elongated connecting member 34, so that it moves with the valve needle 14 in both directions.
  • a coil core 36 dips into the coil body 31 from above, which is frictionally engaged in a bore 37 of the nozzle holder 10 is seated and its axial position can be adjusted by a screw 38 accessible from the outside.
  • the anchor bolt 33 is passed through a central bore 40 in the transverse support bolt 27 and is surrounded there by a helical spring 41 which is supported on the spring washer 24 at the bottom and engages on the flange part 32 at the top.
  • the helical spring 41 presses the induction coil 30 against the housing shoulder 29 in a shake-proof manner.
  • the induction coil 30 is provided with connection contacts 42, which are located in a lateral recess 43 in the nozzle holder 10.
  • a leak oil bore 44 is passed through the coil core 36 and is connected to a leak oil connection bore 46 via a channel 45 in the nozzle holder 10.
  • the magnetic field of the induction coil 30 leads over the surrounding area of the nozzle holder 10, the flange part 32, the coil core 36, the armature bolt 33 and the air gap which is formed between the coil core 36 and the armature bolt 33.
  • the anchor bolt 33 moves back and forth with the valve needle 14 while constantly changing the air gap to the coil core 36, as a result of which the desired signals of the needle movement are generated.
  • the diameter of the induction coil 30 is approximately equal to the outer diameter of the closing spring 16, so that more space is available for the formation and accommodation of the induction coil 30 than in the known designs with a stepped chamber in the nozzle holder 10.

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 aim of the invention is to obtain a fuel injection nozzle for internal combustion engines which affords maximum space for developing and lodging the induction coil (30) in the nozzle holder (10). To achieve this aim, it is proposed that the diameter of the chamber (17) in the nozzle holder (10) which houses the closing spring (16) and the induction coil (30) should be at least approximately constant and that the closing spring (16) should abut on a supporting bolt (27) which traverses the chamber (17). Preferred field of application: diesel engines.

Description

Kraf stoff-Einspritzdüse für BrennkraftmaschinenFuel injector for internal combustion engines
Stand der TechnikState of the art
Die Erfindung geht aus von einer Kraftstoff-Einspritzdüse nach der Gattung des Anspruchs 1. Bei einer bekannten Einspritzdüse dieser Gattung (EP-Bl 99 991) ist die im Düsenhalter gebildete Kammer zur Aufnahme der Schließfeder und der Induktionsspule mit einer Ring¬ schulter versehen, an welcher sich die Schließfeder mit ihren von der Ventilnadel abgekehrten Ende abstützt und an welcher die Kammer in einen im Durchmesser kleineren Abschnitt übergeht, der die In¬ duktionsspule aufnimmt. Bei dieser Ausführung ergibt sich ein Durch¬ messer für die Induktionsspule, der kleiner ist, als er mit Rück¬ sicht auf die Mindestwandstärke des Düsenhalters sein müßte, und der in manchen Fällen zu Kompromissen bei der Auslegung der Induktions¬ spule und der Auswerteschaltung zwingt.The invention is based on a fuel injection nozzle according to the preamble of claim 1. In a known injection nozzle of this type (EP-Bl 99 991), the chamber formed in the nozzle holder for receiving the closing spring and the induction coil is provided with an annular shoulder which supports the closing spring with its end facing away from the valve needle and at which the chamber merges into a section with a smaller diameter, which receives the induction coil. In this embodiment there is a diameter for the induction coil which is smaller than it should be with regard to the minimum wall thickness of the nozzle holder and which in some cases forces compromises in the design of the induction coil and the evaluation circuit.
Vorteile der Erfindung -Advantages of the invention -
Die erfindungsgemäße Anordnung mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß der im Düsenhalter stromauf der gehäusefesten λbstützung für die Schließfeder vorhan- dene Platz optimal für die Unterbringung der Induktionsspule genutzt werden kann. Der guerliegende Stützbolzen teilt gewissermaßen die durchgehende Kammer in eine Federkaimner und eine im Durchmesser an¬ nähernd gleiche Kammer für die Induktionsspule auf und bildet mit seiner Stützfläche den Federkammerboden.The arrangement according to the invention with the characterizing features of claim 1 has the advantage that the upstream of the support for the closing spring in the nozzle holder is present. whose space can be optimally used to house the induction coil. To a certain extent, the lying support bolt divides the continuous chamber into a spring chamber and a chamber of approximately the same diameter for the induction coil and forms the spring chamber floor with its support surface.
Durch die in den Unteransprüchen enthaltenen Merkmale sind vorteil¬ hafte Heiterbildungen der Anordnung nach dem Anspruch 1 möglich.Due to the features contained in the subclaims, advantageous cheering of the arrangement according to claim 1 is possible.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung darge¬ stellt und in der nachfolgenden Beschreibung näher erläutert. Die einzige Figur zeigt die Einspritzdüse nach dem Ausführungsbeispiel teils im Längsschnitt und teils in Seitenansicht.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The single figure shows the injection nozzle according to the embodiment, partly in longitudinal section and partly in side view.
Beschreibung des AusführungsbeispielesDescription of the embodiment
Die Einspritzdüse hat einen Düsenhalter 10, gegen den eine Zwischen¬ platte 11 und ein Düsenkörper 12 durch eine Überwurfmutter 13 ge¬ spannt sind. Im Düsenkörper 12 ist eine Ventilnadel 14 verschiebbar gelagert, auf welche über ein Druckstück 15 eine Schließfeder 16 einwirkt, die in einer Kammer 17 des Düsenhalters 10 untergebracht ist. Die Ventilnadel 14 arbeitet mit einem nach innen gekehrten Ven¬ tilsitz im Düsenkörper 12 zusammen und führt ihren Öffnungshub ent¬ gegen der Strömungsrichtung des Kraftstoffs aus. Die Führungsbohrung der Ventilnadel 14 ist an einer Stelle zu einem Druckraum erweitert, in dessen Bereich die Ventilnadel 14 eine Druckschulter hat und der über Kanäle in der Zwischenscheibe 11 und dem Düsenhalter 10, sowie über ein Filter 19 mit einem Kraftstoff-Anschlußstutzen 20 des Dü¬ senhalters 10 verbunden ist. Der an der Druckschulter der Ventil- nadel 14 angreifende Kraftstoffdruck schiebt die Ventilnadel 14 ent¬ gegen der Kraft der Schließfeder 16 nach oben, bis eine Schulter 21 an der Ventilnadel 14 gegen die untere Stirnseite der Zwischenschei¬ be 11 stößt und den weiteren Aufwärtshub der Ventilnadel 14 begrenzt.The injection nozzle has a nozzle holder 10 against which an intermediate plate 11 and a nozzle body 12 are clamped by a union nut 13. A valve needle 14 is displaceably mounted in the nozzle body 12, on which a closing spring 16 acts via a pressure piece 15 and is accommodated in a chamber 17 of the nozzle holder 10. The valve needle 14 cooperates with an inward-facing valve seat in the nozzle body 12 and executes its opening stroke against the direction of flow of the fuel. The guide bore of the valve needle 14 is expanded at one point to a pressure chamber, in the area of which the valve needle 14 has a pressure shoulder and via channels in the intermediate disk 11 and the nozzle holder 10, and via a filter 19 with a fuel connection piece 20 of the nozzle senhalters 10 is connected. The on the pressure shoulder of the valve Needle 14 attacking fuel pressure pushes the valve needle 14 upward against the force of the closing spring 16 until a shoulder 21 on the valve needle 14 abuts the lower end face of the intermediate plate 11 and limits the further upward stroke of the valve needle 14.
Die Schließfeder 16 stützt sich über eine Federscheibe 24 an der ebenen Bodenfläche 25 einer Ausnehmung 26 eines Stützbolzens 27 ab, der in einer Sackbohrung 28 des Düsenhalters 10 drehbar gelagert ist. Die Sackbohrung 28 ist nach außen durch einen O-Ring abgedich¬ tet, welcher in einer Ringnut des Stützbolzens 27 eingelassen ist. Die auf den Stützbolzen 27 ausgeübte Druckkraft der Schließfeder 16 hält im Zusammenwirken mit der in die Ausnehmung 26 und die Kammer 17 eingreifenden Federscheibe 24 den Stützbolzen 27 gegen Verdrehen und Verschieben gesichert in der Sackbohrung 28 fest.The closing spring 16 is supported by a spring washer 24 on the flat bottom surface 25 of a recess 26 of a support bolt 27 which is rotatably mounted in a blind bore 28 of the nozzle holder 10. The blind bore 28 is sealed to the outside by an O-ring which is embedded in an annular groove of the support bolt 27. The pressure force of the closing spring 16 exerted on the support bolt 27, in cooperation with the spring washer 24 engaging in the recess 26 and the chamber 17, holds the support bolt 27 securely in the blind bore 28 against rotation and displacement.
Die Kammer 17 des Düsenhalters 10 setzt sich, die Sackbohrung 28 kreuzend, mit einem leicht reduzierten Durchmesser bis zu einer Ge¬ häuseschulter 29 nach oben fort. Im oberen Abschnitt der Kammer 17 sitzt eine Induktionsspule 30, die Teil eines Nadelbewegungsfühlers ist, der zum Erfassen des Einspritzbeginns und/oder des Einspritz¬ hubes bzw. der Einspritzdauer dient. Die Induktionsspule 30 hat ei¬ nen Spulenkörper 31, der mit einem die Wand der Kammer 17 berühren¬ den Flanschteil 32 aus magnetisch leitfähigem Stoff verbunden ist. Der Flanschteil 32 ist mit einer zentralen Bohrung versehen, durch die ein in den Spulenkörper 31 eintauchender Ankerbolzen 33 mit ge¬ ringem radialen Spiel hindurchgeführt ist. Der Ankerbolzen 33 kann mit dem Druckstück 15 einstückig oder über ein gestrecktes Verbin¬ dungsglied 34 verbunden sein, so daß er sich mit der Ventilnadel 14 in beiden Richtungen mitbewegt. In den Spulenkörper 31 taucht von oben ein Spulenkern 36 ein, der reibungsschlüssig in einer Bohrung 37 des Düsenhalters 10 sitzt und dessen axiale Lage durch eine von außen zugängliche Schraube 38 einstellbar ist.The chamber 17 of the nozzle holder 10 continues, crossing the blind bore 28, with a slightly reduced diameter up to a housing shoulder 29. In the upper section of the chamber 17 there is an induction coil 30, which is part of a needle movement sensor, which is used to detect the start of injection and / or the injection stroke or the injection duration. The induction coil 30 has a coil body 31 which is connected to a flange part 32 made of magnetically conductive material and touching the wall of the chamber 17. The flange part 32 is provided with a central bore through which an anchor bolt 33, which dips into the coil former 31, is guided with a slight radial play. The anchor bolt 33 can be connected to the pressure piece 15 in one piece or via an elongated connecting member 34, so that it moves with the valve needle 14 in both directions. A coil core 36 dips into the coil body 31 from above, which is frictionally engaged in a bore 37 of the nozzle holder 10 is seated and its axial position can be adjusted by a screw 38 accessible from the outside.
Der Ankerbolzen 33 ist durch eine zentrale Bohrung 40 im querliegen¬ den Stützbolzen 27 hindurchgeführt und dort von einer Schraubenfeder 41 umgeben, die sich unten an der Federscheibe 24 abstützt und oben am Flanschteil 32 angreift. Die Schraubenfeder 41 drückt die Induk¬ tionsspule 30 schüttelfest an die Gehäuseschulter 29 an. Die Induk¬ tionsspule 30 ist mit Anschlußkontakten 42 versehen, die sich in einer seitlichen Ausnehmung 43 des Düsenhalters 10 befinden. Durch den Spulenkern 36 ist eine Leckölbohrung 44 hindurchgeführt, die über einen Kanal 45 im Düsenhalter 10 mit einer Lecköl-Anschluß- bohrung 46 verbunden ist.The anchor bolt 33 is passed through a central bore 40 in the transverse support bolt 27 and is surrounded there by a helical spring 41 which is supported on the spring washer 24 at the bottom and engages on the flange part 32 at the top. The helical spring 41 presses the induction coil 30 against the housing shoulder 29 in a shake-proof manner. The induction coil 30 is provided with connection contacts 42, which are located in a lateral recess 43 in the nozzle holder 10. A leak oil bore 44 is passed through the coil core 36 and is connected to a leak oil connection bore 46 via a channel 45 in the nozzle holder 10.
Das magnetische Feld der Induktionsspule 30 führt über den umgeben¬ den Bereich des Düsenhalters 10, das Flanschteil 32, den Spulenkern 36, den Ankerbolzen 33 und den Luftspalt, der zwischen dem- Spulen¬ kern 36 und dem Ankerbolzen 33 gebildet ist. Im Betrieb der Ein¬ spritzdüse bewegt sich der Ankerbolzen 33 unter ständigem Verändern des Luftspaltes zum Spulenkern 36 mit der Ventilnadel 14 hin und her, wodurch die gewünschten Signale der Nadelbewegung erzeugt wer¬ den. Der Durchmesser der Induktionsspule 30 ist annähernd gleich dem Außendurchmesser der Schließfeder 16, so daß für die Ausbildung und Unterbringung der Induktionsspule 30 mehr Platz zur Verfügung steht als bei der bekannten Ausführungen mit abgestufter Kammer im Düsen¬ halter 10. The magnetic field of the induction coil 30 leads over the surrounding area of the nozzle holder 10, the flange part 32, the coil core 36, the armature bolt 33 and the air gap which is formed between the coil core 36 and the armature bolt 33. When the injection nozzle is in operation, the anchor bolt 33 moves back and forth with the valve needle 14 while constantly changing the air gap to the coil core 36, as a result of which the desired signals of the needle movement are generated. The diameter of the induction coil 30 is approximately equal to the outer diameter of the closing spring 16, so that more space is available for the formation and accommodation of the induction coil 30 than in the known designs with a stepped chamber in the nozzle holder 10.

Claims

Ansprüche Expectations
1. Kraftstoff-Einspritzdüse für Brennkraftmaschinen, mit einem Dü¬ senkörper, in welchem ein Ventilsitz gebildet und eine Ventilnadel verschiebbar geführt ist, die von einer Schließfeder und entgegenge¬ setzt dazu vom Kraftstoffdruck beaufschlagt ist und sich beim Öff¬ nungshub entgegen der Strömungsrichtung des Kraftstoffs bewegt, und ferner mit einem Düsenhalter, an welchem der Düsenkörper festge¬ spannt ist und der eine Kammer zur Aufnahme der an einer gehäusefe¬ sten Schulter sich abstützenden Schließfeder und einer der nadel- hub- bzw. nadelgeschwindigkeitsabhängigen Signalgabe dienenden In¬ duktionsspule hat, welcher ein von der Ventilnadel beeinflußter An¬ kerbolzen und ein Spulenkern zugeordnet sind, gegen den sich der An¬ ker beim Öffnungshub bewegt, dadurch gekennzeichnet, daß die Kammer (17) zur Aufnahme der Schließfeder (16) und der Induktionsspule (30} durchgehend einen mindest annähernd gleichbleibenden Durchmesser hat. und daß die gehäusefeste Schulter (25) zur Abstützung der Schließfe¬ der (16) an einem die Kammer (17) durchquerenden Stützbolzen (27) gebildet ist, welcher mit einem zentralen Durchgang (20) für den An¬ kerbolzen (33) versehen ist. 1. Fuel injection nozzle for internal combustion engines, with a nozzle body, in which a valve seat is formed and a valve needle is displaceably guided, which is acted upon by a closing spring and opposed to it by the fuel pressure and during the opening stroke against the flow direction of the fuel moved, and further with a nozzle holder, on which the nozzle body is clamped and which has a chamber for receiving the closing spring, which is supported on a housing-fixed shoulder, and an induction coil which serves for the needle stroke-dependent or needle-speed-dependent signaling, which an anchor bolt influenced by the valve needle and a coil core are assigned, against which the anchor moves during the opening stroke, characterized in that the chamber (17) for receiving the closing spring (16) and the induction coil (30} continuously at least one has approximately the same diameter and that the housing te shoulder (25) for supporting the closing spring (16) is formed on a support bolt (27) which crosses the chamber (17) and which is provided with a central passage (20) for the anchor bolt (33).
2. Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, daß der querliegende Stützbolzen (27) mit einer Randausnehmung (26) versehen ist, die eine ebene Bodenfläche (25) hat, welche als Auflage für ei¬ ne beidseitig mit ebenen Stützflächen versehene Federscheibe (24) dient.2. Injection nozzle according to claim 1, characterized in that the transverse support pin (27) is provided with an edge recess (26) which has a flat bottom surface (25) which as a support for ei¬ ne provided on both sides with flat support surfaces spring washer (24th ) serves.
3. Einspritzdüse nach Anspruch 2, dadurch gekennzeichnet, daß im zentralen Durchgang (40) des Stützbolzens (27) eine den λnkerbolzen (33) umgebende Feder (41) angeordnet ist, die sich an der Feder¬ scheibe (24) abstützt und die Induktionsspule (30) gegen eine ge¬ häusefeste Schulter (29) drückt.3. Injection nozzle according to claim 2, characterized in that in the central passage (40) of the support bolt (27) a λnkerbolzen (33) surrounding spring (41) is arranged, which is supported on the Feder¬ disc (24) and the induction coil (30) presses against a housing-fixed shoulder (29).
4. Einspritzdüse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Stützbolzen (27) in einer Sackbohrung (28) des Düsenhalters (10) drehbar gelagert ist, die nach außen durch ei¬ nen O-Ring zwischen Stützbolzen (27) und Bohrungswand abgedichtet ist. 4. Injection nozzle according to one of the preceding claims, characterized in that the support bolt (27) is rotatably mounted in a blind bore (28) of the nozzle holder (10), which is outwardly through an egg-ring between the support bolt (27) and the bore wall is sealed.
PCT/EP1989/001252 1988-11-18 1989-10-20 Fuel injection nozzle for internal combustion engines WO1990005847A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3839036.1 1988-11-18
DE19883839036 DE3839036A1 (en) 1988-11-18 1988-11-18 FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Publications (1)

Publication Number Publication Date
WO1990005847A1 true WO1990005847A1 (en) 1990-05-31

Family

ID=6367433

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1989/001252 WO1990005847A1 (en) 1988-11-18 1989-10-20 Fuel injection nozzle for internal combustion engines

Country Status (4)

Country Link
EP (1) EP0444057A1 (en)
JP (1) JPH04501755A (en)
DE (1) DE3839036A1 (en)
WO (1) WO1990005847A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017005581A1 (en) * 2015-07-09 2017-01-12 Delphi International Operations Luxembourg S.À R.L. Fuel injector having external setting of the coil spring
CN110959676A (en) * 2018-09-30 2020-04-07 内蒙古伊利实业集团股份有限公司 Fermented milk product containing bifidobacterium lactis and application thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638339B4 (en) * 1996-09-19 2008-10-02 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
JP6248788B2 (en) 2014-04-28 2017-12-20 シンフォニアテクノロジー株式会社 Wafer mapping apparatus and load port having the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049635B (en) * 1959-01-29 Daimler-Benz Aktiengesellschaft, Stuttgart-Untertürkheim Device for electrically measuring the stroke of nozzle needles for fuel injection nozzles of internal combustion engines
EP0132623A2 (en) * 1983-07-26 1985-02-13 Robert Bosch Gmbh Fuel injector for internal-combustion engines
DE3509375A1 (en) * 1985-03-15 1986-09-25 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
DE2554987C2 (en) * 1975-12-06 1987-02-12 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection nozzle for internal combustion engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049635B (en) * 1959-01-29 Daimler-Benz Aktiengesellschaft, Stuttgart-Untertürkheim Device for electrically measuring the stroke of nozzle needles for fuel injection nozzles of internal combustion engines
DE2554987C2 (en) * 1975-12-06 1987-02-12 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection nozzle for internal combustion engines
EP0132623A2 (en) * 1983-07-26 1985-02-13 Robert Bosch Gmbh Fuel injector for internal-combustion engines
DE3509375A1 (en) * 1985-03-15 1986-09-25 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017005581A1 (en) * 2015-07-09 2017-01-12 Delphi International Operations Luxembourg S.À R.L. Fuel injector having external setting of the coil spring
FR3038662A1 (en) * 2015-07-09 2017-01-13 Delphi Int Operations Luxembourg Sarl FUEL INJECTOR WITH EXTERNAL SPRING SPRING SPRING
US10400730B2 (en) 2015-07-09 2019-09-03 Delphi Technologies Ip Limited Fuel injector having external setting of the coil spring
CN110959676A (en) * 2018-09-30 2020-04-07 内蒙古伊利实业集团股份有限公司 Fermented milk product containing bifidobacterium lactis and application thereof

Also Published As

Publication number Publication date
EP0444057A1 (en) 1991-09-04
DE3839036A1 (en) 1990-05-23
JPH04501755A (en) 1992-03-26

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