DE3502087A1 - ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE - Google Patents

ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE

Info

Publication number
DE3502087A1
DE3502087A1 DE19853502087 DE3502087A DE3502087A1 DE 3502087 A1 DE3502087 A1 DE 3502087A1 DE 19853502087 DE19853502087 DE 19853502087 DE 3502087 A DE3502087 A DE 3502087A DE 3502087 A1 DE3502087 A1 DE 3502087A1
Authority
DE
Germany
Prior art keywords
valve
plug
fuel injection
spacer ring
outlet opening
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Withdrawn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
DE19853502087
Other languages
German (de)
Inventor
Eckhart Dipl.-Ing. 6239 Hofheim Kern
Arnold 6465 Bieber Mann
Gerhard 6234 Hattersheim Ruschek
Horst Dipl.-Ing. 6231 Schwalbach Schlick
Reiner Dipl.-Ing. 6238 Hofheim Weingärtner
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO 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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Priority to DE19853502087 priority Critical patent/DE3502087A1/en
Priority to AT85115127T priority patent/ATE47618T1/en
Priority to EP85115127A priority patent/EP0188702B1/en
Priority to DE8585115127T priority patent/DE3573944D1/en
Publication of DE3502087A1 publication Critical patent/DE3502087A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0639—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature acting as a valve
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • 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

Landscapes

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

Abstract

1. Electromagnetically operable fuel injection valve for injection systems of internal-combustion engines, with a valve housing (1), a plug (4), which is arranged in a valve bore and has a conical circumferential-surface section (15) as metering element, a soft-iron core (11), which is arranged within the valve housing (1) and bears a fixed magnet winding, and an armature, which is coaxial with the latter and opposite it, forming an air gap, and is firmly connected to a control element, controlling the through-flow, the plug (4) being held by an holding member (3), which is arranged in the valve bore, is independent of the closing element and is in contact via a spacer ring (6) with a stop (7) on the outlet side, characterized in that the holding member (3), which forms a unit with the plug (4), is arranged axially displaceably in the valve bore (2) and the plug (4), with the circumferential-surface section (15) widening conically in flow direction, determines with the outlet opening (14) the metering crosssection, in that the stop (7) is arranged detachably on the valve housing (1) and in that the axial position of the holding member (3) can be fixed by the thickness of the spacer ring (6), the spacer ring being interchangeable for other spacer rings of different thickness but the same diameter of the outlet opening (14).

Description

Elektromagnetisch betätigbares Kraftst offeinspritz ventil Electromagnetically operated fuel injection valve

1010

Die Erfindung bezieht sich auf ein elektromagnetisch betätigbares Kraftstoffeinspritzventil für Einspritzanlagen von Brennkraftmaschinen, mit einem Ventilgehäuse, einem in einer Ventilbohrung des Ventilgehäuses angeordneten Zapfen als Zumeßelement, einem innerhalb des Ventilgehäuses angeordneten, eine feststehende Magnetwicklung tragenden Weicheisenkern und einem diesem gleichachsig und unter Bildung eines Luftspaltes gegenüberstehenden Anker, welcher fest mit einem den Durchfluß steuernden Schließglied verbunden ist. Solche Linspritzventile sind in heutigen Einspritzmotoren gebräuchlich und daher allgemein bekannt.The invention relates to an electromagnetically actuated fuel injection valve for injection systems of internal combustion engines, with a valve housing, one arranged in a valve bore of the valve housing Pin as a metering element, one inside the valve housing arranged soft iron core carrying a fixed magnet winding and one coaxial with this and with the formation of an air gap opposite armature, which is fixed to the flow controlling closing member is connected. Such lens injection valves are common in today's injection engines and therefore well known.

Die Einspritzmenge muß bei Brennkraftmaschinen sehr genau bemessen sein. Das macht es erforderlich, jedes Kraftstoffeinspritzventil nach der Montage hinsichtlich seiner Durchflußmenge zu testen und erforderlichenfalls die Durchflußmenge zu erhöhen, indem entweder der gehärtete Zapfen oder die Ventilbohrung nachgeschliffen werden. Diese Arbeiten sind zeitaufwendig und deshalbThe injection quantity must be very high in internal combustion engines be precisely measured. That makes it necessary every Fuel injection valve after assembly with regard to to test its flow rate and if necessary Increase the flow rate by either the hardened The pin or the valve bore grinded will. This work is time consuming and therefore

20 kostenintensiv.20 expensive.

BAD ORiGiNAL ' 'BAD ORiGiNAL ''

Der Erfindung liegt die Aufgabe zugrunde, ein Kraftstetfeinspritzventil nach dem Oberbegriff mit hoher Durchflußgenauigkeit zu schaffen, welches auf einfache und kostengünstige Weise herstellbar ist.The invention is based on the object of a constant fuel injection valve to create according to the generic term with high flow accuracy, which is simple and inexpensive Way is producible.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Zapfen von einem in der Ventilbohrung angeordneten, vom Schließglied unabhängigen, axial verstellbaren Haltekörper gehalten ist und mit einem konischen Bereich in eine Austrittsöffnung ragt.This object is achieved according to the invention in that the pin of one arranged in the valve bore, is held independent of the closing member, axially adjustable holding body and with a conical region in an outlet protrudes.

Durch diese erfindungsgemäße Gestaltung des Kraftstoffeinspritzventils entfällt das bisher notwendige Nacharbeiten an der Zumeßstelle. Die richtige Durchflußmenge wird ausschließlich durch axiales Verschieben des Haltekörpers und damit auch des Zapfens in der Austrittsöffnung erreicht.This design of the fuel injection valve according to the invention the previously necessary reworking at the metering point is no longer necessary. The right flow rate is only made by axially displacing the holding body and thus also the pin in the outlet opening achieved.

Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, daß die Lage des Haltekörpers durch einen gegen einen austrittsseitigen Anschlag anliegenden Distanzring festgelegt ist, welcher die Austrittsöffnung aufweist. Bei dieser Ausführungsform kann die Durchflußmenge einfach durch Verwendung unterschiedlich dicker Distanzringe verändert werden.There is an advantageous embodiment of the invention in that the position of the holding body by a spacer ring resting against a stop on the outlet side is set, which has the outlet opening. In this embodiment, the flow rate can be simple can be changed by using spacer rings of different thicknesses.

Die Erfindung läßt zahlreiche Ausführungsformen zu. Eine davon ist schematisch in der Zeichnung dargestellt und wird nachfolgend beschrieben.The invention allows numerous embodiments. One of which is shown schematically in the drawing and is described below.

Die Zeichnung zeigt im Längsschnitt einen Teilbereich eines lentilgehäuses 1 mit einer Ventilbohrung 2, in der ein Haltekörper 3 eingepreßt ist. Der Haltekörper 3 bildet eine Einfielt mit einem Zapfen 4, der ein Zerstäubungs- und Zumeßelement für das Kraftstoffeinspritzventil darstellt. Zwischen dem Haltekörper 3 und einer vorderen Abnchlußwand 5, die demontierbar ist, befindetThe drawing shows a partial area in longitudinal section a valve housing 1 with a valve bore 2 in which a holding body 3 is pressed in. The holding body 3 forms an inlet with a pin 4, which is an atomizing and metering element for the fuel injection valve represents. Between the holding body 3 and a front end wall 5, which is removable, is located

BAD ORIGINALBATH ORIGINAL

sich ein Distanzring 6. Die Abschlußwand 5 bildet einen vorderen Anschlag 7 für den Distanzring 6.a spacer ring 6. The end wall 5 forms a front stop 7 for the spacer ring 6.

Die Ventilbohrung 2 endet en der dem Zapfen 4 abgewandten Seite mit einem Ventilsitz 8, gegen den ein Plattenventil 9 mittels einer Druckfeder 10 gehalten ist. Dieses Plattenventil 9 vermag sich gegen die Kraft der Druckfeder 10 bis gegen einen Anker 11 zu verschieben, sobald eine nicht darqestellte, den Anker umgebende Magnetspule bestromt wird. Der zu verspritze"de Kraftstoff strömt dann durch den geöffneten Ventilsitz 8, anschließend durch einen Durchlaß 12 im Halte körper 3 und danach zwischen dem Zapfen 4 und dem Distanzring 6 durch eine Austrittsöffnung 14 nach außen.The valve bore 2 ends at the point facing away from the pin 4 Side with a valve seat 8 against which a Plate valve 9 held by means of a compression spring 10 is. This plate valve 9 can counteract the force the compression spring 10 to move against an armature 11, as soon as a not shown, surrounding the anchor Magnet coil is energized. The fuel to be sprayed then flows through the open valve seat 8, then through a passage 12 in the holding body 3 and then between the pin 4 and the spacer ring 6 through an outlet opening 14 to the outside.

Wichtig für die vorliegende Erfindung ist, daß der Zapfen 4 im Bereich der Austrittsöffnung 14 eine konische Mantelfläche 15 hat. Verjüngt sich diese beispielsweise zum Haltekörper 3 hin, so vergrößert sich der freie Quer schnitt der Austrittsöffnung 14, wenn man einen dünneren Distanzring 6 wählt und der Zapfen 4 dadurch weiter aus der Austrittsöffnung 14 ragt.It is important for the present invention that the pin 4 is conical in the region of the outlet opening 14 Has jacket surface 15. If this tapers, for example, towards the holding body 3, the free transverse increases cut the outlet opening 14 if you had a thinner one Selects spacer ring 6 and the pin 4 thereby protrudes further out of the outlet opening 14.

Claims (2)

PatentansprücheClaims 1.)Elektromagnetisch betätigbares Kraftstoffeinspritzven· til für Einspritzanlagen von Brennkraftmaschinen, mit einem Ventilgehäuse, einem in einer Ventilbohrung angeordneten Zapfen als Zumeßelement, einem innerhalb des Ventilgehäuses angeordneten, eine feststehende Magnetwicklung tragenden Weicheisenkern und einem diesem gleichachsig und unter Bildung eines Luftspaltes gegenüberstehenden Anker, welcher fest mit einem den Durchfluß steuernden Schließglied verbunden ist, dadurch gekennzeichnet, daß der Zapfen (4) von einem in der Ventilbohrung (2) angeordneten, vom Schließglied (Plattenventil 9) unabhängigen, axial verstellbaren Haltekörper (3) gehalten ist und mit einer konischen Mantelfläche (15) in eine Austrittsöffnung (14) ragt.1.) Electromagnetically actuated fuel injection valve for injection systems of internal combustion engines, with a valve housing, a pin arranged in a valve bore as a metering element, a soft iron core arranged inside the valve housing, carrying a fixed magnet winding and an armature which is coaxially opposite this and forming an air gap, which is firmly connected to a closing member controlling the flow, characterized in that the pin (4) is held by an axially adjustable holding body (3) which is arranged in the valve bore (2) and is independent of the closing member (plate valve 9) and has a conical outer surface (15) protrudes into an outlet opening (14). 2. Elektromagnetisch betätigbares Kraft stoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Lage des Haltekörpers (3) durch einen gegen einen austrittsseitigen Anschlag (7) anliegenden Distanzring (6) festgelegt ist, welcher die Austrittsöffnung (14) aufweist .2. Electromagnetically actuated fuel injection valve according to claim 1, characterized in that the position of the holding body (3) is determined by a spacer ring (6) which rests against an outlet-side stop (7) and which has the outlet opening (14). BADBATH
DE19853502087 1985-01-23 1985-01-23 ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE Withdrawn DE3502087A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19853502087 DE3502087A1 (en) 1985-01-23 1985-01-23 ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
AT85115127T ATE47618T1 (en) 1985-01-23 1985-11-28 ELECTROMAGNETICALLY ACTUATED FUEL INJECTION VALVE.
EP85115127A EP0188702B1 (en) 1985-01-23 1985-11-28 Electromagnetically actuated fuel injector
DE8585115127T DE3573944D1 (en) 1985-01-23 1985-11-28 Electromagnetically actuated fuel injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853502087 DE3502087A1 (en) 1985-01-23 1985-01-23 ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE

Publications (1)

Publication Number Publication Date
DE3502087A1 true DE3502087A1 (en) 1986-07-24

Family

ID=6260507

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19853502087 Withdrawn DE3502087A1 (en) 1985-01-23 1985-01-23 ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
DE8585115127T Expired DE3573944D1 (en) 1985-01-23 1985-11-28 Electromagnetically actuated fuel injector

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8585115127T Expired DE3573944D1 (en) 1985-01-23 1985-11-28 Electromagnetically actuated fuel injector

Country Status (3)

Country Link
EP (1) EP0188702B1 (en)
AT (1) ATE47618T1 (en)
DE (2) DE3502087A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811003A1 (en) * 1988-03-31 1989-10-12 Pierburg Gmbh Solenoid injection valve for internal combustion engines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539056A1 (en) * 1985-11-04 1987-05-14 Vdo Schindling ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894789C (en) * 1949-12-11 1953-10-29 Daimler Benz Ag Fluid controlled injection nozzle with conical pin for internal combustion engines
US2756107A (en) * 1952-05-16 1956-07-24 Eugene J Korda Fuel injection valve
DE3023757A1 (en) * 1980-06-25 1982-01-21 Robert Bosch Gmbh, 7000 Stuttgart INJECTION VALVE
JPS5862359A (en) * 1981-10-12 1983-04-13 Nippon Denso Co Ltd Electro-magnetic fuel injection valve
JPS58137872U (en) * 1982-03-15 1983-09-16 愛三工業株式会社 electromagnetic fuel injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811003A1 (en) * 1988-03-31 1989-10-12 Pierburg Gmbh Solenoid injection valve for internal combustion engines

Also Published As

Publication number Publication date
EP0188702A1 (en) 1986-07-30
ATE47618T1 (en) 1989-11-15
DE3573944D1 (en) 1989-11-30
EP0188702B1 (en) 1989-10-25

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Legal Events

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8139 Disposal/non-payment of the annual fee