EP1831541B1 - Pressure control valve - Google Patents

Pressure control valve Download PDF

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Publication number
EP1831541B1
EP1831541B1 EP05817180A EP05817180A EP1831541B1 EP 1831541 B1 EP1831541 B1 EP 1831541B1 EP 05817180 A EP05817180 A EP 05817180A EP 05817180 A EP05817180 A EP 05817180A EP 1831541 B1 EP1831541 B1 EP 1831541B1
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EP
European Patent Office
Prior art keywords
pressure
valve
regulating valve
valve member
electromagnet
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.)
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Application number
EP05817180A
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German (de)
French (fr)
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EP1831541A1 (en
Inventor
Michael Bitter
Helmut Sattmann
Peter Luckeneder
Johann Schardax
Gerold Neuwirt
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1831541A1 publication Critical patent/EP1831541A1/en
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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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0043—Two-way valves
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators

Definitions

  • the invention relates to an arrangement for adjusting the closing force of a pressure regulating valve with an electromagnet and a movable armature, which finds particular use in a fuel injection system for internal combustion engines for regulating a pressure in a fuel tank.
  • Electromagnets with movable armature are also used as actuators in a variety of applications.
  • Pressure control valves are known in many versions.
  • the pressure control valve is used to regulate the pressure in a fuel tank, with which it is connected via an inlet.
  • the pressure regulating valve has a piston-shaped valve member, which is guided axially displaceably in a bore and which can move against a force, which preferably acts on the valve member as a result of the current in the electromagnet.
  • the force acts in the closing direction, so that the valve member on a Closing element of the pressure control valve is pressed and pressed against a valve seat.
  • the valve member forms an anchor bolt of an electromagnet which can be energized for power control.
  • the energization creates a magnetic field that penetrates the armature of the electromagnet, whereby a magnetic force acts on the anchor bolt.
  • the valve member presses the closing element with this force against the valve seat.
  • the regulation of the pressure in the fuel accumulator is done by adjusting the current in the coil of the electromagnet.
  • the actual pressure thus depends on the characteristics of the electromagnet. These include not only the electromagnetic parameters but also the geometric dimensions. Of particular importance is the air gap between the movable armature and the fixed valve housing, in which the coil of the electromagnet is located. The air gap is determined by the component geometry.
  • the object of the invention is to develop the known from the prior art pressure control valve such that the adjustment of the closing force of the valve in the preassembled state can be done in a precise manner.
  • the object is achieved by the features of claim 1.
  • the distance between the armature and the valve housing is decisive for the penetration of the armature from the magnetic field lines and accordingly for the magnetic force that can be transmitted from the armature and leads to the closing force of the pressure control valve.
  • the detection of this distance is carried out according to the invention by the measurement of a force generated by the magnetic circuit and a displacement measurement in a simultaneous positioning of the valve member. These two physical quantities can be detected very accurately and allow a precise adjustment of the pressure control valve without the influence of mechanical tolerances and the material properties at the electromagnet.
  • the energization of the electromagnet is carried out with the nominal operating point of the pressure control valve corresponding current, so that there are conditions as they occur later in the operation of the pressure control valve.
  • the energization of the electromagnet is controlled, so that feedback effects on the measurements, in particular in the positioning of the valve member, are avoided and constantly present the nominal operating point of the pressure control valve corresponding current.
  • FIG. 1 shows a schematic view of a pressure control valve in longitudinal section to illustrate the operation of the pressure control valve.
  • FIG. 2 is, also in longitudinal section, the pressure control valve only shown with the parts that are important for the interaction with schematically drawn measuring systems for detecting a force and a path.
  • FIG. 1 is a longitudinal section through a schematic representation of a pressure control valve 11 is shown, which may be arranged on a fuel accumulator not shown in the figure.
  • the pressure regulating valve 11 has a housing 12, in which an electromagnet 13 is arranged with a coil winding 14.
  • the coil winding 14 is embedded in soft magnetic material.
  • an anchor bolt 16 of the electromagnet 13 which at its free end as a valve member 17 against a Closing element 18 expresses which closing element 18 in turn is supported on a valve seat 19.
  • a radially extending anchor plate 21 is mounted, which is spaced with a flat bottom 22 to an opposite planar top 23 of the housing 12 by an air gap 24, which does not stand out graphically due to its small dimensions.
  • the air gap 24 is set in the pressure control valve 11 by the axial height of a dial 26 which is arranged between a reference surface 27 of the housing 12 and an opposite bearing surface 28 of a valve seat body 29.
  • pressure control valve 11 whose from the FIG. 1 Parts taken over here are not named again, is provided with a, with the anchor bolt 16 coupled force measuring system 31 and having a positioning pin 32 having Wegmeßsystem 33 which is shown only schematically and with a distance 34 between the reference surface 27 and an end face 36 of the valve member 17 is determined.
  • the solenoid 13 is acted upon by a current corresponding to the nominal operating point of the pressure regulating valve 11.
  • the anchor bolt 16 is displaced in the stationarily fixed housing 12 against the force caused by the energization of the electromagnet 13 until a predetermined opposing force with which the pressure regulating valve 11 is to close at the nominal operating point is reached.
  • This force is controllable by the force measuring system 31 with high accuracy.
  • the aforementioned displacement of the anchor bolt 16 is effected by the positioning pin 32 of the position measuring system 33, which bears against the end face 36 of the valve member 17.
  • the axial distance 34 between the end face 36 of the valve member 17 and the reference surface 27 of the housing 12 of the pressure regulating valve 11 is measured at nominal working point of the pressure control valve 11 by the measuring system 33 with high accuracy.

Abstract

A pressure regulating valve in a fuel injection system for internal combustion engines for regulating the pressure in a fuel reservoir in which the operating pressure is adjusted by the dimensioning of an adjusting disk, whose function-determining axial height is ascertained with high precision by a force measuring system and by a travel measuring system by way of ascertaining a spacing between an end face of a valve member of the pressure regulating valve and a reference face of a housing of the pressure regulating valve.

Description

Die Erfindung bezieht sich auf eine Anordnung zur Einstellung der_Schließkraft eines Druckregelventil mit einem Elektromagneten und einem beweglichen Anker, das insbesondere Verwendung findet in einem Kraftstoffeinspritzsystem für Brennkraftmaschinen zur Regelung eines Drucks in einem Kraftstoffspeicher.The invention relates to an arrangement for adjusting the closing force of a pressure regulating valve with an electromagnet and a movable armature, which finds particular use in a fuel injection system for internal combustion engines for regulating a pressure in a fuel tank.

Elektromagnete mit beweglichem Anker werden außerdem als Aktoren in vielfältigen Anwendungen benutzt.Electromagnets with movable armature are also used as actuators in a variety of applications.

Stand der TechnikState of the art

Aus der EP-A-1 065 372 ist ein Druckregelventil mit einem axial verschiebbaren. Ventilglied bekannt, das auf ein Schließelement wirkt, wobei das Ventilglied Teil eines Ankerbolzens eines Elektromagneten bildet. Zur Kalibrierung des Druckregelventils dient eine Einstellscheibe mit vorgebbarer Dicke.From the EP-A-1 065 372 is a pressure control valve with an axially displaceable. Valve member known which acts on a closing element, wherein the valve member forms part of an anchor bolt of an electromagnet. To calibrate the pressure control valve is a shim with predetermined thickness.

Druckregelventile sind in vielfältigen Ausführungen bekannt. Das Druckregelventil dient zur Regelung des Drucks in einem Kraftstoffspeicher, mit dem es über einen Zulauf verbunden ist. Das Druckregelventil weist ein in einer Bohrung axial verschiebbar geführtes kolbenförmiges Ventilglied auf, das sich gegen eine Kraft, die vorzugsweise durch den Strom im Elektromagneten auf das Ventilglied wirkt, bewegen kann. Die Kraft wirkt in Schließrichtung, so dass das Ventilglied auf ein Schließelement des Druckregelventils gedrückt und gegen einen Ventilsitz gepresst wird. Das Ventilglied bildet einen Ankerbolzen eines Elektromagneten, der zur Kraftsteuerung bestrombar ist.Pressure control valves are known in many versions. The pressure control valve is used to regulate the pressure in a fuel tank, with which it is connected via an inlet. The pressure regulating valve has a piston-shaped valve member, which is guided axially displaceably in a bore and which can move against a force, which preferably acts on the valve member as a result of the current in the electromagnet. The force acts in the closing direction, so that the valve member on a Closing element of the pressure control valve is pressed and pressed against a valve seat. The valve member forms an anchor bolt of an electromagnet which can be energized for power control.

Durch die Bestromung entsteht ein magnetisches Feld, das den Anker des Elektromagneten durchdringt, wodurch eine magnetische Kraft auf den Ankerbolzen wirkt. Das Ventilglied drückt das Schließelement mit dieser Kraft gegen den Ventilsitz.The energization creates a magnetic field that penetrates the armature of the electromagnet, whereby a magnetic force acts on the anchor bolt. The valve member presses the closing element with this force against the valve seat.

Wenn die durch den hydraulischen Druck des Kraftstoffs erzeugte Kraft die Schließkraft, die über das Ventilglied auf das Schließelement ausgeübt wird, überschreitet, wird das Schließelement vom Ventilsitz abgehoben. In diesem Fall fließt Kraftstoff aus dem Kraftstoffspeicher durch den Zulauf über das geöffnete Druckregelventil in einen Entlastungsraum ab.When the force generated by the hydraulic pressure of the fuel exceeds the closing force exerted on the closing element via the valve member, the closing element is lifted off the valve seat. In this case, fuel flows from the fuel reservoir through the inlet via the open pressure regulating valve into a relief chamber.

Bei der Einstellung eines höheren Drucks im Kraftstoffspeicher wird der Strom im Elektromagneten vergrößert, so dass die Schließkraft erhöht wird und somit das Schließelement erst bei einem höheren Druck im Kraftstoffspeicher vom Ventilsitz abhebt und Kraftstoff aus dem Kraftstoffspeicher in den Entlastungsraum abfließen kann.When setting a higher pressure in the fuel tank, the current in the solenoid is increased, so that the closing force is increased and thus the closing element lifts only at a higher pressure in the fuel tank from the valve seat and fuel can flow from the fuel tank in the discharge chamber.

Nachteile des Stands der TechnikDisadvantages of the prior art

Die Regulierung des Drucks in dem Kraftstoffspeicher erfolgt über die Einstellung des Stroms in der Spule des Elektromagneten. Der tatsächliche Druck hängt somit von den Kenngrößen des Elektromagneten ab. Zu diesen gehören außer den elektromagnetischen Parametern auch die geometrischen Abmessungen. Von besonderer Bedeutung ist der Luftspalt zwischen dem beweglichen Anker und dem festen Ventilgehäuse, in dem sich die Spule des Elektromagneten befindet. Der Luftspalt wird durch die Bauteilgeometrie festgelegt.The regulation of the pressure in the fuel accumulator is done by adjusting the current in the coil of the electromagnet. The actual pressure thus depends on the characteristics of the electromagnet. These include not only the electromagnetic parameters but also the geometric dimensions. Of particular importance is the air gap between the movable armature and the fixed valve housing, in which the coil of the electromagnet is located. The air gap is determined by the component geometry.

Um den Druck präzise einstellen zu können, bzw. ein präzises Druckintervall regeln zu können, müssen die Bauteile genau aneinander angepasst sein. Die notwendigen Fertigungstoleranzen sind entsprechend klein, was einen erheblichen Montage- und damit Kostenaufwand bedeutet.In order to be able to set the pressure precisely, or to be able to regulate a precise pressure interval, the components must be precisely matched to one another. The necessary manufacturing tolerances are correspondingly small, which means a considerable assembly and thus cost.

Aufgabe der ErfindungObject of the invention

Die Aufgabe der Erfindung ist es, das aus dem Stand der Technik bekannte Druckregelventil derart weiterzubilden, dass die Einstellung der Schließkraft des Ventils in vormontiertem Zustand in präziser Weise erfolgen kann.The object of the invention is to develop the known from the prior art pressure control valve such that the adjustment of the closing force of the valve in the preassembled state can be done in a precise manner.

Lösung der AufgabeSolution of the task

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Der Abstand zwischen Anker und Ventilgehäuse ist bestimmend für die Durchdringung des Ankers von den magnetischen Feldlinien und dementsprechend für die magnetische Kraft, die von dem Anker übertragen werden kann und zur Schließkraft des Druckregelventils führt. Die Erfassung dieses Abstands erfolgt erfindungsgemäß durch die Messung einer von dem Magnetkreis erzeugten Kraft und aus einer Wegmessung bei einer gleichzeitig stattfindenden Positionierung des Ventilglieds. Diese beiden physikalische Größen lassen sich sehr genau erfassen und erlauben eine präzise Einstellung des Druckregelventils ohne Einflüsse von mechanischen Toleranzen und den Stoffeigenschaften am Elektromagneten.The object is achieved by the features of claim 1. The distance between the armature and the valve housing is decisive for the penetration of the armature from the magnetic field lines and accordingly for the magnetic force that can be transmitted from the armature and leads to the closing force of the pressure control valve. The detection of this distance is carried out according to the invention by the measurement of a force generated by the magnetic circuit and a displacement measurement in a simultaneous positioning of the valve member. These two physical quantities can be detected very accurately and allow a precise adjustment of the pressure control valve without the influence of mechanical tolerances and the material properties at the electromagnet.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Druckregelventils möglich.The measures listed in the dependent claims advantageous refinements and improvements of the claim 1 pressure control valve are possible.

Gemäß vorteilhafter Ausgestaltung erfolgt die Bestromung des Elektromagneten mit einem dem Nennarbeitspunkt des Druckregelventils entsprechendem Strom, so dass hier Verhältnisse vorliegen, wie sie auch später im Betrieb des Druckregelventils auftreten.According to an advantageous embodiment, the energization of the electromagnet is carried out with the nominal operating point of the pressure control valve corresponding current, so that there are conditions as they occur later in the operation of the pressure control valve.

Auch vorteilhaft ist, dass die Bestromung des Elektromagneten geregelt erfolgt, so dass Rückkopplungseffekte auf die Messungen, insbesondere bei der Positionierung des Ventilgliedes, vermieden werden und ständig der dem Nennarbeitspunkt des Druckregelventil entsprechende Strom vorliegt.It is also advantageous that the energization of the electromagnet is controlled, so that feedback effects on the measurements, in particular in the positioning of the valve member, are avoided and constantly present the nominal operating point of the pressure control valve corresponding current.

Weitere vorteilhafte Ausgestaltungen gehen aus der nachfolgenden Beschreibung sowie den Ansprüchen hervor.Further advantageous embodiments will become apparent from the following description and the claims.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der Figurenbeschreibung näher erläutert. Figur 1 zeigt eine schematische Ansicht eines Druckregelventils im Längsschnitt zur Verdeutlichung der Arbeitsweise des Druckregelventils. In der Figur 2 ist, ebenfalls im Längsschnitt, das Druckregelventil nur noch mit den Teilen dargestellt, die für das Zusammenwirken mit schematisiert eingezeichneten Meßsystemen zur Erfassung einer Kraft und eines Weges von Bedeutung sind.An embodiment of the invention is illustrated in the drawing and explained in more detail in the description of the figures. FIG. 1 shows a schematic view of a pressure control valve in longitudinal section to illustrate the operation of the pressure control valve. In the FIG. 2 is, also in longitudinal section, the pressure control valve only shown with the parts that are important for the interaction with schematically drawn measuring systems for detecting a force and a path.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In Figur 1 ist ein Längsschnitt durch eine schematische Darstellung eines Druckregelventils 11 gezeigt, das an einem in der Figur nicht dargestelltem Kraftstoffspeicher angeordnet sein kann.In FIG. 1 is a longitudinal section through a schematic representation of a pressure control valve 11 is shown, which may be arranged on a fuel accumulator not shown in the figure.

Das Druckregelventil 11 weist ein Gehäuse 12 auf, in dem ein Elektromagnet 13 mit einer Spulenwicklung 14 angeordnet ist. Die Spulenwicklung 14 ist in weichmagnetisches Material eingebettet.The pressure regulating valve 11 has a housing 12, in which an electromagnet 13 is arranged with a coil winding 14. The coil winding 14 is embedded in soft magnetic material.

In einer axialen Ausnehmung des Gehäuses 12 befindet sich ein Ankerbolzen 16 des Elektromagneten 13, welcher an seinem freien Ende als Ventilglied 17 gegen ein Schließelement 18 drückt, welches Schließelement 18 sich wiederum auf einem Ventilsitz 19 abstützt.In an axial recess of the housing 12 is an anchor bolt 16 of the electromagnet 13, which at its free end as a valve member 17 against a Closing element 18 expresses which closing element 18 in turn is supported on a valve seat 19.

An dem anderen Ende des axial gerichteten Ankerbolzens 16 ist eine radial verlaufende Ankerplatte 21 angebracht, die mit einer planen Unterseite 22 zu einer gegenüberliegenden planen Oberseite 23 des Gehäuses 12 durch einen Luftspalt 24, der aufgrund seiner geringen Ausmaße zeichnerisch nicht hervortritt, beabstandet ist. Der Luftspalt 24 wird bei dem Druckregelventil 11 durch die axiale Höhe einer Einstellscheibe 26, die zwischen einer Referenzfläche 27 des Gehäuses 12 und einer gegenüberliegenden Auflagefläche 28 eines Ventilsitzkörpers 29 angeordnet ist, eingestellt.At the other end of the axially directed anchor bolt 16 is a radially extending anchor plate 21 is mounted, which is spaced with a flat bottom 22 to an opposite planar top 23 of the housing 12 by an air gap 24, which does not stand out graphically due to its small dimensions. The air gap 24 is set in the pressure control valve 11 by the axial height of a dial 26 which is arranged between a reference surface 27 of the housing 12 and an opposite bearing surface 28 of a valve seat body 29.

Durch Bestromung des Elektromagneten 13 werden die Ankerplatte 21 und der Ankerbolzen 16 von magnetischen Flußlinien durchdrungen, wodurch eine magnetische Kraft wirkt, die das Ventilglied 17 gegen das Schließelement 18 sowie den Ventilsitz 19 drückt. Die Größe dieser Kraft ist abhängig von der Größe des Luftspaltes 24.By energizing the electromagnet 13, the armature plate 21 and the anchor bolt 16 are penetrated by magnetic flux lines, whereby a magnetic force acts, which presses the valve member 17 against the closing element 18 and the valve seat 19. The size of this force is dependent on the size of the air gap 24th

Das in der Figur 2 im Längsschnitt dargestellte Druckregelventil 11, dessen von der Figur 1 übernommenen Teile hier nicht nochmals benannt werden, ist mit einem, mit dem Ankerbolzen 16 gekoppelten Kraftmeßsystem 31 und mit einem Positionierstift 32 aufweisenden Wegmeßsystem 33 versehen, der nur schematisiert dargestellt ist und mit dem ein Abstand 34 zwischen der Referenzfläche 27 und einer Stirnfläche 36 des Ventilgliedes 17 ermittelt wird.That in the FIG. 2 in longitudinal section shown pressure control valve 11, whose from the FIG. 1 Parts taken over here are not named again, is provided with a, with the anchor bolt 16 coupled force measuring system 31 and having a positioning pin 32 having Wegmeßsystem 33 which is shown only schematically and with a distance 34 between the reference surface 27 and an end face 36 of the valve member 17 is determined.

Zur Ermittlung des Abstandes 34 für die Dimensionierung der axialen Höhe der noch einzufügenden Einstellscheibe 26, die in der Figur 1 gezeigt ist, wird der Elektromagnet 13 mit einem Strom beaufschlagt, der dem Nennarbeitspunkt des Druckregelventils 11 entspricht. Aus diesem Grundzustand heraus wird in dem ortsfest fixierten Gehäuse 12 der Ankerbolzen 16 solange gegen die durch die Bestromung des Elektromagneten 13 hervorgerufenen Kraft verschoben, bis eine vorgegebene Gegenkraft, mit der das Druckregelventil 11 im Nennarbeitspunkt schließen soll, erreicht ist. Diese Kraft ist durch das Kraftmeßsystem 31 mit hoher Genauigkeit kontrollierbar.To determine the distance 34 for the dimensioning of the axial height of the yet to be inserted shim 26, in the FIG. 1 is shown, the solenoid 13 is acted upon by a current corresponding to the nominal operating point of the pressure regulating valve 11. For this basic state, the anchor bolt 16 is displaced in the stationarily fixed housing 12 against the force caused by the energization of the electromagnet 13 until a predetermined opposing force with which the pressure regulating valve 11 is to close at the nominal operating point is reached. This force is controllable by the force measuring system 31 with high accuracy.

Die vorgenannte Verschiebung des Ankerbolzens 16 erfolgt durch den Positionierstift 32 des Wegmeßsystems 33, der an Stirnfläche 36 des Ventilgliedes 17 anliegt.The aforementioned displacement of the anchor bolt 16 is effected by the positioning pin 32 of the position measuring system 33, which bears against the end face 36 of the valve member 17.

Mit dem Erreichen der durch das Kraftmeßsystem 31 kontrollierten vorgegebenen Gegenkraft wird im Nennarbeitspunkt des Druckregelventils 11 durch das Wegmeßsystem 33 mit hoher Genauigkeit der axiale Abstand 34 zwischen der Stirnfläche 36 des Ventilgliedes 17 und der Referenzfläche 27 des Gehäuses 12 des Druckregelventils 11 gemessen.With the achievement of the predetermined counterforce controlled by the force measuring system 31, the axial distance 34 between the end face 36 of the valve member 17 and the reference surface 27 of the housing 12 of the pressure regulating valve 11 is measured at nominal working point of the pressure control valve 11 by the measuring system 33 with high accuracy.

Aufgrund der Präzisionsmessungen des Wegmeßsystems 33 und der dieses steuernde Kraftmeßsystems 31 sind die Voraussetzungen für eine hochgenaue Ermittlung des Abstandes 34 und der damit ableitbaren axialen Höhe der Einstellscheibe 26 gegeben, so dass damit der von dem Druckregelventil 11 überwachte Druck des Kraftstoffspeichers in engen Grenzen einhaltbar ist.Due to the precision measurements of the position measuring system 33 and this controlling force measuring system 31, the conditions for a highly accurate determination of the distance 34 and the thus deducible axial height of the shim 26 are given, so that thus of the Pressure control valve 11 monitored pressure of the fuel reservoir can be maintained within narrow limits.

Claims (3)

  1. Arrangement for setting the closing force of a pressure-regulating valve, in particular for a fuel injection system for internal combustion engines, in order to regulate the pressure in a fuel accumulator, with a valve member (17) which is guided axially displaceably in a recess of a housing (12) of the pressure-regulating valve (11) and which acts on a closing element (18) which can be pressed against a valve seat (19), the valve member (17) forming part of an armature bolt (16) of an electromagnet (13), to which current can be applied, and a setting disc (26) being used for setting the pressure-regulating valve, characterized in that the positioning of the valve member (17) is detected by a displacement measurement system (33) and the counterforce which is in this case to be maintained is detected by a force measurement system (31), and the clearance (34) between the valve member (17) and a reference face (27) of the housing (12) is determined by the displacement measurement system (33), in the case of a stipulated application of current to the electromagnet (13) and a simultaneous positioning of the valve member (17) up to a stipulated counterforce, for the purpose of dimensioning the setting disc (26) for the pressure-regulating valve, via which setting disc an air gap (24) determining the actuating force of the pressure-regulating valve (11) is set.
  2. Arrangement according to Claim 1, characterized in that the stipulated application of current to the electromagnet (13) takes place with a current which corresponds to the nominal operating point of the pressure-regulating valve (11).
  3. Arrangement according to Claim 2, characterized in that the application of current takes place in a regulated manner.
EP05817180A 2004-12-23 2005-11-22 Pressure control valve Active EP1831541B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062004A DE102004062004A1 (en) 2004-12-23 2004-12-23 Pressure control valve
PCT/EP2005/056150 WO2006069860A1 (en) 2004-12-23 2005-11-22 Pressure control valve

Publications (2)

Publication Number Publication Date
EP1831541A1 EP1831541A1 (en) 2007-09-12
EP1831541B1 true EP1831541B1 (en) 2009-10-28

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EP05817180A Active EP1831541B1 (en) 2004-12-23 2005-11-22 Pressure control valve

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US (1) US7721712B2 (en)
EP (1) EP1831541B1 (en)
JP (1) JP4532565B2 (en)
AT (1) ATE447105T1 (en)
DE (2) DE102004062004A1 (en)
WO (1) WO2006069860A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011654A1 (en) * 2007-03-09 2008-09-11 Continental Automotive Gmbh Method and device for volume flow control of an injection system
DE102009047649A1 (en) * 2009-12-08 2011-06-09 Robert Bosch Gmbh Pressure control valve for regulating the pressure in a high pressure fuel accumulator of an internal combustion engine
FR2973076A1 (en) * 2011-03-25 2012-09-28 Bosch Gmbh Robert PRESSURE REGULATOR, DIESEL INJECTION DEVICE COMPRISING SUCH A REGULATOR, DIESEL ENGINE COMPRISING SUCH AN INJECTION DEVICE AND VEHICLE COMPRISING SUCH AN ENGINE
EP2535554A1 (en) 2011-06-15 2012-12-19 Delphi Technologies Holding S.à.r.l. Electro-valve for discharging common rail
FR2999658A1 (en) * 2012-12-18 2014-06-20 Delphi Technologies Holding HIGH PRESSURE VALVE
FR3030638B1 (en) * 2014-12-23 2017-01-13 Bosch Gmbh Robert PRESSURE REGULATOR FOR A HIGH-PRESSURE RAMP OF A FUEL INJECTION SYSTEM

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Publication number Priority date Publication date Assignee Title
IT1296144B1 (en) * 1997-11-18 1999-06-09 Elasis Sistema Ricerca Fiat ADJUSTABLE DOSING VALVE FOR ONE FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINES.
DE19905722A1 (en) * 1998-02-24 1999-08-26 Hoerbiger Ventilwerke Gmbh Adjustable electromagnetic gas valve for gas fueled internal combustion engine
IT1308779B1 (en) * 1999-07-02 2002-01-10 Elasis Sistema Ricerca Fiat DEVICE FOR ADJUSTING THE DELIVERY PRESSURE OF A PUMP, SUITABLE FOR FUEL SUPPLY TO A COMBUSTION ENGINE
DE10107115B4 (en) * 2001-02-14 2004-09-30 Robert Bosch Gmbh Pressure control valve
JP2003097749A (en) * 2001-09-26 2003-04-03 Denso Corp Electromagnetic fluid control device
DE10214084A1 (en) * 2002-03-28 2003-10-30 Bosch Gmbh Robert Adjustable pressure control valve for fuel injection systems
US7099136B2 (en) * 2002-10-23 2006-08-29 Seale Joseph B State space control of solenoids
DE10334615A1 (en) * 2003-07-29 2005-02-17 Robert Bosch Gmbh Pressure control valve for storage fuel injection system
JP2005291411A (en) * 2004-04-01 2005-10-20 Toyoda Mach Works Ltd Excess flow valve
US7441546B2 (en) * 2005-07-28 2008-10-28 Denso Corporation Valve apparatus

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JP2008525697A (en) 2008-07-17
EP1831541A1 (en) 2007-09-12
ATE447105T1 (en) 2009-11-15
WO2006069860A1 (en) 2006-07-06
DE502005008427D1 (en) 2009-12-10
US7721712B2 (en) 2010-05-25
US20100018501A1 (en) 2010-01-28
JP4532565B2 (en) 2010-08-25
DE102004062004A1 (en) 2006-07-13

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