EP1831541A1 - Pressure control valve - Google Patents

Pressure control valve

Info

Publication number
EP1831541A1
EP1831541A1 EP05817180A EP05817180A EP1831541A1 EP 1831541 A1 EP1831541 A1 EP 1831541A1 EP 05817180 A EP05817180 A EP 05817180A EP 05817180 A EP05817180 A EP 05817180A EP 1831541 A1 EP1831541 A1 EP 1831541A1
Authority
EP
European Patent Office
Prior art keywords
pressure control
control valve
valve
pressure
valve member
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.)
Granted
Application number
EP05817180A
Other languages
German (de)
French (fr)
Other versions
EP1831541B1 (en
Inventor
Michael Bitter
Helmut Sattmann
Peter Luckeneder
Johann Schardax
Gerold Neuwirt
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.)
Robert Bosch GmbH
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 EP1831541A1 publication Critical patent/EP1831541A1/en
Application granted granted Critical
Publication of EP1831541B1 publication Critical patent/EP1831541B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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 a pressure control 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 storage.
  • Electromagnets with movable armature are also used as actuators in a variety of applications.
  • Pressure control valves are known in many versions.
  • the pressure regulating valve is used to regulate the pressure in a fuel reservoir 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 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.
  • Figure 1 shows a schematic view of a pressure control valve in longitudinal section to illustrate the operation of the pressure control valve.
  • FIG. 2 also in longitudinal section, the pressure regulating valve is shown only with the parts which are important for the interaction with schematically drawn measuring systems for detecting a force and a path.
  • FIG. 1 shows a longitudinal section through a schematic illustration of a pressure regulating valve 11 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 in the pressure regulating valve 11 by the axial height of a
  • Shim 26 which is disposed between a reference surface 27 of the housing 12 and an opposite bearing surface 28 of a valve seat body 29, adjusted.
  • Anchor plate 21 and the anchor bolt 16 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
  • the pressure control valve 11 shown in longitudinal section in FIG. 2, whose parts are taken from FIG. 1, is provided with a force measuring system 31 coupled to the anchor bolt 16 and a position measuring system 33 having a positioning pin 32, which is shown only diagrammatically and with which 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 control 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.
  • Position measuring system 33 with high accuracy of 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)

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

Druckregelventil Pressure control valve
Die Erfindung bezieht sich auf ein 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 a pressure control 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 storage.
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
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 regulating valve is used to regulate the pressure in a fuel reservoir 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 imWhen setting a higher pressure in the
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.Fuel accumulator, the current in the electromagnet is increased, so that the closing force is increased and thus the closing element lifts only at a higher pressure in the fuel reservoir from the valve seat and fuel can flow from the fuel storage in the discharge chamber.
Nachteile des Stands der Technik 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.Disadvantages of the prior art The regulation of the pressure in the fuel storage takes place via the adjustment of 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. ZeichnungFurther advantageous embodiments will become apparent from the following description and the claims. drawing
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. Figure 1 shows a schematic view of a pressure control valve in longitudinal section to illustrate the operation of the pressure control valve. In FIG. 2, also in longitudinal section, the pressure regulating valve is shown only with the parts which 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.FIG. 1 shows a longitudinal section through a schematic illustration of a pressure regulating valve 11 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 einerAt 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 in the pressure regulating valve 11 by the axial height of a
Einstellscheibe 26, die zwischen einer Referenzfläche 27 des Gehäuses 12 und einer gegenüberliegenden Auflagefläche 28 eines Ventilsitzkörpers 29 angeordnet ist, eingestellt.Shim 26, which is disposed between a reference surface 27 of the housing 12 and an opposite bearing surface 28 of a valve seat body 29, adjusted.
Durch Bestromung des Elektromagneten 13 werden dieBy energizing the electromagnet 13, the
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.Anchor plate 21 and the anchor bolt 16 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. 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.The pressure control valve 11, shown in longitudinal section in FIG. 2, whose parts are taken from FIG. 1, is provided with a force measuring system 31 coupled to the anchor bolt 16 and a position measuring system 33 having a positioning pin 32, which is shown only diagrammatically and with which a distance 34 between the reference surface 27 and an end face 36 of the valve member 17 is determined. To determine the distance 34 for the dimensioning of the axial height of the still to be inserted shim 26, which is shown in the figure 1, the solenoid 13 is acted upon by a current corresponding to the nominal operating point of the pressure control 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 dasUpon reaching the controlled by the force measuring 31 predetermined counterforce is in the nominal operating point of the pressure control valve 11 by the
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.Position measuring system 33 with high accuracy of 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.
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 desDue 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
KraftstoffSpeichers in engen Grenzen einhaltbar ist. Fuel storage is within reasonable limits.

Claims

A N S P R U C H E
1. Druckregelventil, insbesondere für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen zur Regelung des Drucks in einem KraftstoffSpeicher, mit einem, in einer Ausnehmung eines Gehäuses (12) des1. Pressure control valve, in particular for a fuel injection system for internal combustion engines for regulating the pressure in a fuel storage, with a, in a recess of a housing (12) of the
Druckregelventils (11) axial verschiebbar geführten Ventilglied (17) , das auf ein Schließelement (18) wirkt, welches gegen einen Ventilsitz (19) pressbar ist, wobei das Ventilglied (17) Teil eines Ankerbolzens (16) eines Elektromagneten (13) bildet, der bestrombar ist, dadurch gekennzeichnet, dass ein Abstand (34) zwischen dem Ventilglied (17) und einer Referenzfläche (27) des GehäusesPressure control valve (11) axially displaceably guided valve member (17) acting on a closing element (18) which is pressed against a valve seat (19), wherein the valve member (17) forms part of an anchor bolt (16) of an electromagnet (13), is energized, characterized in that a distance (34) between the valve member (17) and a reference surface (27) of the housing
(12) bei einer vorgegebenen Bestromung des Elektromagneten(12) at a given energization of the electromagnet
(13) und einer gleichzeitigen Positionierung des Ventilgliedes (17) bis zu einer vorgegebenen Gegenkraft ermittelt wird.(13) and a simultaneous positioning of the valve member (17) is determined up to a predetermined counterforce.
2. Druckregelventil nach Anspruch 1, dadurch gekennzeichnet:, dass die vorgegebene Bestromung des Elektromagneten (13) mit einem, dem Nennarbeitspunkt des Druckregelventils (11) entsprechendem Strom erfolgt. 2. Pressure control valve according to claim 1, characterized in that: the predetermined energization of the electromagnet (13) with a, the nominal operating point of the pressure regulating valve (11) corresponding current takes place.
3. Druckregelventil nach Anspruch 2, dadurch gekennzeichnet, dass die Bestromung geregelt erfolgt.3. Pressure control valve according to claim 2, characterized in that the current is regulated.
4. Druckregelventil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Positionierung des Ventilgliedes (17) durch ein Wegmeßsystem (33) und die dabei zu einzuhaltende Gegenkraft durch ein Kraftmeßsystem (31) erfasst wird.4. Pressure control valve according to one of the preceding claims, characterized in that the positioning of the valve member (17) by a position measuring system (33) and thereby to be observed counterforce by a force measuring system (31) is detected.
5. Druckregelventil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass durch das Wegmeßsystem (33) der Abstand (34) zwischen dem Ventilglied (17) und der Referenzfläche (27) zur Dimensionierung einer Einstellscheibe (26) für das Druckregelventil ermittelt wird, über die ein die Stellkraft des Druckregelventils (11) bestimmender Luftspalt (24) eingestellt wird. 5. Pressure control valve according to one of the preceding claims, characterized in that by the distance measuring system (33), the distance (34) between the valve member (17) and the reference surface (27) for dimensioning a shim (26) is determined for the pressure control valve over the a the force of the pressure control valve (11) determining the air gap (24) is set.
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 true EP1831541A1 (en) 2007-09-12
EP1831541B1 EP1831541B1 (en) 2009-10-28

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

Country Status (6)

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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)

Families Citing this family (6)

* 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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006069860A1 *

Also Published As

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JP2008525697A (en) 2008-07-17
JP4532565B2 (en) 2010-08-25
EP1831541B1 (en) 2009-10-28
US7721712B2 (en) 2010-05-25
DE502005008427D1 (en) 2009-12-10
US20100018501A1 (en) 2010-01-28
DE102004062004A1 (en) 2006-07-13
WO2006069860A1 (en) 2006-07-06
ATE447105T1 (en) 2009-11-15

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