DE19711779A1 - Electromagnetic injection valve for internal combustion engines - Google Patents

Electromagnetic injection valve for internal combustion engines

Info

Publication number
DE19711779A1
DE19711779A1 DE1997111779 DE19711779A DE19711779A1 DE 19711779 A1 DE19711779 A1 DE 19711779A1 DE 1997111779 DE1997111779 DE 1997111779 DE 19711779 A DE19711779 A DE 19711779A DE 19711779 A1 DE19711779 A1 DE 19711779A1
Authority
DE
Germany
Prior art keywords
ball
valve
injection valve
electromagnetic injection
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.)
Withdrawn
Application number
DE1997111779
Other languages
German (de)
Inventor
Richard Bertsch
Thomas Bertsch
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE1997103836 external-priority patent/DE19703836C2/en
Application filed by Individual filed Critical Individual
Priority to DE1997111779 priority Critical patent/DE19711779A1/en
Publication of DE19711779A1 publication Critical patent/DE19711779A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature

Landscapes

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

Abstract

An electromagnetic injection valve has the axial lifting movement operating a dosing valve opening inwards. The dosing valve has a ball operated through a lifting spring. The ball is connected to the lifting spring through a bell adaptor welded on both sides. For lift limitation of the ball, a hat shell is mounted on the valve body.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von den in den Anmeldeunterlagen 197 03 836.0-13 beschriebe­ nen Stand der Technik.The invention is based on the description in the application documents 197 03 836.0-13 state of the art.

Vorteile der ErfindungAdvantages of the invention

Abweichend von der Erfindungsmeldung 197 03 836.0-13 bei der ein nach außen öffnen­ des Zumeßventil zum Einsatz kommt, wird bei dieser Ausführungsvariante ein nach innen öffnendes Zumeßventil verwendet.Deviating from the invention message 197 03 836.0-13 in which one opens outwards of the metering valve is used, this version is an inward opening metering valve used.

Durch die Umkehrung der Bewegungsrichtung bei der Ventilöffnung kann eine rationelle Ventilgruppe, bestückt mit einer Präzisionskugel als Dichtelement und einer stromabwärts nachgeschalteter Zumeßblende die gegen Kontaminierung unempfindlich ist, zum Einsatz kommen.By reversing the direction of movement when opening the valve, a rational Valve group, equipped with a precision ball as a sealing element and one downstream downstream metering orifice which is insensitive to contamination come.

Neben den bereits in der Erfindungsmeldung 197 03 836.0-13 genannten Vorteilen be­ züglich der Anordnung des Magnetkreises und der Huberzeugung ergeben sich durch die Kombination mit einem nach innen öffnenden Zumeßventils in der vorgestellten Ausfüh­ rungsvariante weitere wirtschaftliche Vorteile gegenüber konventionellen Einspritzventi­ len.In addition to the advantages already mentioned in the invention application 197 03 836.0-13 regarding the arrangement of the magnetic circuit and the stroke generation result from the Combination with an inward opening metering valve in the version shown variant further economic advantages compared to conventional injection valves len.

Zeichnungdrawing

Seite 5: Schnittbild Einspritzventil komplett,
Seite 6: Schnittbild Ventilgruppe vergrößert dargestellt.Page 5: Cross section of the injection valve complete
Page 6: Sectional view of valve group enlarged.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Fig. 1 zeigt ein Schnittbild des Ausführungsbeispiels mit einer außen anliegenden Ma­ gnetspule. Durch Aktivierung der Magnetspule 11 wird der Anker 12 in Aufwärtsrichtung bewegt. Die fest mit dem Anker und Spannbuchse 13 verbundene Hubfeder 14 beschreibt einen Kreisbogen um den Drehpunkt 15. Durch die Vergrößerung des Winkels α in ei­ nem rechtwinkeligen Dreieck verkürzt sich die anliegend Kathete und führt so zu einer axialen Huberzeugung welche zur Betätigung der Ventilkugel verwendet wird. Die glei­ che Kathetenreduzierung erfolgt unter ähnliche Bedingungen auf der anderen Schenkelsei­ te 16 der Hubfeder. Über einen Blockenadapter 45 ist die Hubfeder fest mit der Ventil­ kugel 46 verbunden. Die Spannbuchse 13 ist wiederum fest mit dem aus unmagnetischem Werkstoff gefertigten Mantelrohr 20 verbunden. Fig. 1 shows a sectional view of the embodiment with an external magnetic coil. By activating the magnetic coil 11 , the armature 12 is moved in the upward direction. The lifting spring 14 , which is firmly connected to the armature and clamping bush 13 , describes an arc around the pivot point 15 . By increasing the angle α in a right-angled triangle, the adjacent cathete is shortened and thus leads to an axial stroke generation which is used to actuate the valve ball. The same catheter reduction takes place under similar conditions on the other side leg 16 of the lifting spring. Via a block adapter 45 , the lifting spring is firmly connected to the valve ball 46 . The clamping bush 13 is in turn firmly connected to the jacket tube 20 made of non-magnetic material.

Entgegen der Hubbewegung wirkt eine axial verschiebbare Federgabel 18 welche sich einseitig auf einer schiefen Ebene 17 und am anderen Ende in zwei Schlitzen der Spann­ buchse 13 abstützt. Durch axiales Verschieben des Federgabel kann der auf den Stützbol­ zen 19 und den Anker 12 wirkende Federdruck auf den gewünschten Sollwert für die Grö­ ße der Schließkraft des Zumeßventils und der dynamischen Flußmenge eingestellt werden.Counter to the lifting movement acts an axially displaceable suspension fork 18 which is supported on one side on an inclined plane 17 and at the other end in two slots of the clamping bush 13 . By axially moving the suspension fork, the spring pressure acting on the support bolt 19 and the armature 12 can be set to the desired setpoint for the size of the closing force of the metering valve and the dynamic flow rate.

Nach dem Einstellvorgang wird die Federgabel in der Spannbuchse 13 fest fixiert. O-Ring 10 ist auf der Zuflußseite des EME angeordnet und dichtet den Kraftstoffzufluß ab. Ein weiterer O-Ring 21 dichtet das EME zum Saugrohr hin ab. Bei dem erfindungsgemäßen EME besteht die Möglichkeit diesen O-Ring in unterschiedlichen axialer Positionen anzuordnen um so den bestmöglichsten Abspritzpunkt im Saugrohr zu ermöglichen.After the adjustment process, the suspension fork is firmly fixed in the clamping bush 13 . O-ring 10 is located on the inflow side of the EME and seals the fuel inflow. Another O-ring 21 seals the EME from the intake manifold. With the EME according to the invention, it is possible to arrange this O-ring in different axial positions in order to enable the best possible spray point in the intake manifold.

Auf Seite 6, Fig. 4 werden die Einzelheiten des Zumeßventils gezeigt. Eine über den Glockenadapter 45 fest mit der Hubfeder 14 und dem Anker 12 verbundene Kugel 46 wird über die radiale Huberzeugung geöffnet und in ihrem Hub durch die Huthülse 44 auf den gewünschten Öffnungshub begrenzt. Über eine stromabwärts von der Dichtkugel im Ventilkörper 41 integrierte Zumeßblende 47 wird die Kraftstoffmenge zugemessen. Über die Kanäle 43 und 42 strömt der Kraftstoff vor den Dichtsitz des Zumeßventils.The details of the metering valve are shown on page 6, FIG. 4. A ball 46 , which is firmly connected to the lifting spring 14 and the armature 12 via the bell adapter 45 , is opened via the radial stroke generation and its stroke is limited to the desired opening stroke by the hat sleeve 44 . The fuel quantity is metered in via a metering orifice 47 integrated downstream of the sealing ball in the valve body 41 . The fuel flows via the channels 43 and 42 in front of the sealing seat of the metering valve.

Claims (4)

1. Elektromagnetische Einspritzventile (EME) nach den Ansprüchen 1-6 von Patentan­ meldung 197 03 836.0-13.1. Electromagnetic injection valves (EME) according to claims 1-6 of Patentan message 197 03 836.0-13. 2. EME nach Anspruch 1 dadurch gekennzeichnet, daß die axiale Hubbewegung ein nach innen öffnendes Zumeßventil betätigt.2. EME according to claim 1, characterized in that the axial stroke movement after internal metering valve actuated. 3. Zumeßventil dadurch gekennzeichnet, daß über die Hubfeder eine Kugel welche über einen beidseitig angeschweißten Glockenadapter mit der Hubfeder verbunden ist, betä­ tigt wird.3. metering valve, characterized in that a ball which over the lift spring a bell adapter welded on both sides is connected to the lift spring is done. 4. Zumeßventil nach Anspruch 3 dadurch gekennzeichnet, daß zur Hubbegrenzung der Ventilkugel eine Huthülse direkt an dem Ventilkörper montiert wird.4. metering valve according to claim 3, characterized in that to limit the stroke A hat sleeve is mounted directly on the valve body.
DE1997111779 1997-02-01 1997-03-21 Electromagnetic injection valve for internal combustion engines Withdrawn DE19711779A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997111779 DE19711779A1 (en) 1997-02-01 1997-03-21 Electromagnetic injection valve for internal combustion engines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997103836 DE19703836C2 (en) 1997-02-01 1997-02-01 Electromagnetic injection valve for internal combustion engines
DE1997111779 DE19711779A1 (en) 1997-02-01 1997-03-21 Electromagnetic injection valve for internal combustion engines

Publications (1)

Publication Number Publication Date
DE19711779A1 true DE19711779A1 (en) 1998-10-22

Family

ID=26033585

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997111779 Withdrawn DE19711779A1 (en) 1997-02-01 1997-03-21 Electromagnetic injection valve for internal combustion engines

Country Status (1)

Country Link
DE (1) DE19711779A1 (en)

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