EP2413333B1 - Soupape de réglage de pression - Google Patents

Soupape de réglage de pression Download PDF

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Publication number
EP2413333B1
EP2413333B1 EP11002924.6A EP11002924A EP2413333B1 EP 2413333 B1 EP2413333 B1 EP 2413333B1 EP 11002924 A EP11002924 A EP 11002924A EP 2413333 B1 EP2413333 B1 EP 2413333B1
Authority
EP
European Patent Office
Prior art keywords
valve
magnetic
pressure control
control valve
constriction
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.)
Not-in-force
Application number
EP11002924.6A
Other languages
German (de)
English (en)
Other versions
EP2413333A2 (fr
EP2413333A3 (fr
Inventor
Frank Zelano
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.)
Kendrion Villingen GmbH
Original Assignee
Kendrion Villingen 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 Kendrion Villingen GmbH filed Critical Kendrion Villingen GmbH
Publication of EP2413333A2 publication Critical patent/EP2413333A2/fr
Publication of EP2413333A3 publication Critical patent/EP2413333A3/fr
Application granted granted Critical
Publication of EP2413333B1 publication Critical patent/EP2413333B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • 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
    • F02M63/005—Pressure relief valves
    • F02M63/0052—Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material

Definitions

  • the invention relates to a pressure regulating valve, in particular for a high-pressure accumulator body or a high-pressure pump of a fuel injection system according to the preamble of patent claim 1.
  • Pressure control valves for modern diesel common-rail injection systems must regulate the injection pressure very precisely and require high stability both against high pressure fluctuations and increasingly against increased pressures on the low-pressure side. Furthermore, for new and modern tank systems higher pressures on the low pressure side are needed, which cause a reaction to the high pressure control valve.
  • This pressure regulating valve comprises a housing, an armature assembly with an anchor plate and an anchor bolt.
  • the armature plate and an end face of the housing define a volume which can be filled with medium removed from the high-pressure accumulator.
  • This volume is to be reduced by means of a non-magnetic material, such as a film or coating, to thereby achieve a greater robustness against the occurrence of instabilities, in particular by the influence of constant or varying pressures on the low pressure side.
  • the invention is therefore an object of the invention to provide a pressure control valve of the type mentioned, in which with simple structural and thus cost-effective means improved stability is achieved both against high pressure fluctuations and against high pressures on the low pressure side.
  • This object is achieved by a pressure regulating valve having the features of patent claim 1.
  • Such a pressure regulating valve according to the invention is characterized in that the magnetic circuit of the magnetic coil, which is formed by the area of the valve housing receiving the magnetic coil and by the armature plate, has at least one magnetic constriction.
  • the magnetic constriction is formed as a local reduction of the radial cross section in the region of the magnetic coil receiving recess, preferably by means of one on the radially inner peripheral surface of the magnetic coil receiving recess disposed circumferential groove, which is structurally simple to implement.
  • the reduction in cross section for the magnetic constriction is also provided in the region adjoining the recess radially outward by means of a circumferential groove, arranged either on the radially outer peripheral surface of the recess receiving the magnetic coil or on the outer peripheral surface of the valve housing in the region of the magnetic coil.
  • the anchor plate is designed as a magnetically acting constriction, which also results in a simple realization possibility of the magnetic constriction.
  • the thickness of the anchor plate to form a magnetic constriction can be selected accordingly, so as to achieve a corresponding early saturation in the anchor plate.
  • the pressure control valve 1 comprises a valve housing 2 made of soft magnetic material, which receives a solenoid coil 3 in a substantially cylindrical valve housing part 2a and forms a seat valve 4 in a subsequent, formed with a smaller diameter further cylindrical valve housing part 2b.
  • This pressure control valve 1 is screwed (not shown) with this further valve housing part 2b in a high-pressure accumulator, wherein by means of a seal 5, a pressure-tight connection with the high-pressure accumulator is made.
  • a valve stem 6 is axially movably mounted in an axial valve stem bore 7 of the valve housing 2 by means of two bearings 7a and 7b, which is conically formed at its seat valve side end and there operates a spherical sealing element 8 of the seat valve 4.
  • the valve seat for this valve ball 8 is formed by a valve seat element 9, which is arranged in a blind hole of the valve housing part 2b at the end and has a closable by the valve ball 8 channel 10, which establishes a connection to the high-pressure accumulator via a filter screen 11.
  • valve housing part 2b In the axial region of the valve seat, the valve housing part 2b on a valve chamber 12 which is connected via radially extending Abêtbohrept 13 in the valve housing part 2b with a tank system (not shown).
  • the valve housing part 2a has an annular cylinder bore 27, so that thereby the end face of the valve housing part 2a an inner annular Operapol matters 14 and an outer annular Operapol matters 15 is formed.
  • This Sectionpol lake 14 and 15 is a pole face 16 of an anchor plate 17 opposite, which is fixedly connected to the valve stem 6.
  • the pressure control valve is adjusted so that between the pole face 16 of the armature plate 17 and the Generalpolfest 14 and 15 on the front side of the valve housing part 2a, a small air gap 20 is formed when the valve stem 6 is in a closing the seat valve 4 position.
  • the anchor plate 17 is acted upon by a compression spring 18 in the direction of the seat valve 4, which is received by a blind hole in a connection part 19 and supported against the same.
  • This connection part 19 is used to limit the stroke of the armature plate 17, for receiving electrical connection lines of the solenoid 3 and as the pressure control valve 1 final housing part.
  • the end face of the valve housing part 2a is extended tubularly for receiving a correspondingly formed cylindrical part 21 of the connecting part 19, wherein a seal 23 is provided for sealing the valve space outwardly between the outer peripheral surface of the cylindrical part 21 and the inner peripheral surface of the tubular extension 22.
  • a hat-shaped end part 24 forms on the side of the connecting part 19 the conclusion, wherein the peripheral edge is crimped with the edge of the extension 22.
  • this pressure regulating valve 1 is connected to, for example, a high-pressure accumulator, its high pressure in the non-energized state of the magnetic coil 3 causes the valve ball 8 to lift off from its valve seat, as a result of which medium can flow out of the high-pressure accumulator via the diversion bores 13.
  • the solenoid 3 By a Energization of the solenoid 3, the armature plate 17 is pulled against the pole faces 14 and 15, thereby the valve ball 8 is pressed into the valve seat of the poppet valve 4 via the valve stem 6, whereby a regulation of the flow in dependence of the coil current and thus a control of the High pressure can be performed.
  • the occurring forces F are in dependence of the size s of the air gap 20 in the characteristic diagram with the coil current as a parameter after FIG. 2 shown.
  • adjusting or adjusting the air gap 20 to the value s 1 as the operating point for the pressure control valve is at energizing the solenoid 3 with a current value of I 1, a force F u1 , at a larger current value I 2, a force F o1 a.
  • the force F u1 disproportionately small compared to the force F o1 .
  • the characteristic slope or the magnetic constant c 1 is correspondingly low. The consequence of this is that the pressure regulating valve does not work stably over high pressure fluctuations and low pressure fluctuations or return pressures over the entire pressure range.
  • This magnetic constriction 26 represents a local necking in the magnetic circuit 25 so that magnetic saturation occurs earlier in this region of the necking.
  • This cross-sectional reduction can also be formed in the radially adjoining the recess 27 to the outside area. So is according to FIG. 1 is on the radially outer peripheral surface 29 of the recess 27, a circumferential groove 26 'is arranged. Instead of on this outer peripheral surface 29, a circumferential groove 26 "can also be realized on the outer circumferential surface 30 of the valve housing part 2a in the region of the magnetic coil 3.
  • the armature plate 17 located in the magnetic circuit 25 can be formed by a corresponding design with a reduced cross-section.
  • a first possibility consists in a reduction of the thickness of the anchor plate 17.
  • Another possibility relates to the design of the peripheral edge region, since it faces with its pole face 16 of the outer Operapol specifications 15 of the end face of the valve housing part 2a and therefore offers to flatten this edge region 31 in radial section, so that the edge region tapers conically outward.
  • the resulting saturation of the magnetic circuit 25 is optimized in such a way that according to FIG. 2 the operating point of the pressure regulating valve 1 can be shifted from the value s 1 (width of the air gap 20) to the value s 2 .
  • the associated force F u2 at this value s 2 is approximately twice as large as the force F u1 at the value s 1 , as is the magnet constant c 2 , while the force F o2 at the current value I 2 has not changed. With this measure, almost a proportionality between the current I and the respective generated force F is achieved, whereby a substantial improvement of the low and high pressure behavior is achieved without significant instabilities or pulsations occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (6)

  1. Soupape de régulation de pression (1) en particulier destinée à un corps d'accumulateur haute pression ou à une pompe de refoulement haute pression d'un système d'injection de carburant comprenant :
    - un carter de soupape (2, 2a, 2b) ayant un perçage axial (7) destiné à recevoir un poussoir de soupape (6) ainsi qu'un évidement (27) de réception d'une bobine magnétique (3), entourant le perçage du poussoir de soupape (7),
    - une plaque d'induit (17) reliée au poussoir de soupape (6), et
    - un siège de soupape (4) en liaison fonctionnelle avec le poussoir de soupape (6), le circuit magnétique (25) de la bobine magnétique (3) qui est formé par la zone du carter de soupape (2, 2a, 2b) recevant la bobine magnétique (2) et par la plaque d'induit (17) comportant au moins un étranglement magnétique (26, 26', 26", 17, 31),
    caractérisé en ce que
    - l'étranglement magnétique (26, 26', 26") est réalisé sous la forme d'une réduction locale de la section radiale dans la zone de l'évidement (27) de réception de la bobine magnétique (3), et la réduction de section de l'étranglement magnétique (26', 26") étant formée dans la zone radiale se connectant radialement vers l'extérieur à l'évidement (27) au moyen d'une rainure (26") périphérique s'étendant sur la surface périphérique externe (30) du carter de soupape (2, 2a, 2b) dans la zone de la bobine magnétique (3).
  2. Soupape de régulation de pression (1) conforme à la revendication 1,
    caractérisée en ce que
    la réduction de section de l'étranglement magnétique est formée au moyen d'une rainure périphérique (26) s'étendant sur la surface périphérique interne radiale (28) de l'évidement (27).
  3. Soupape de régulation de pression conforme à la revendication 2,
    caractérisée en ce que
    la réduction de section de l'étranglement magnétique est formée au moyen d'une rainure périphérique (26') située sur la surface périphérique externe radiale de l'évidement (27).
  4. Soupape de régulation de pression (1) conforme à l'une des revendications précédentes,
    caractérisée en ce que
    la plaque d'induit (17) est réalisée sous la forme d'un étranglement magnétique.
  5. Soupape de régulation de pression (1) conforme à la revendication 4,
    caractérisée en ce que
    l'épaisseur de la plaque d'induit (17) est choisie de manière adaptée pour former un étranglement magnétique.
  6. Soupape de régulation de pression conforme à la revendication 4 ou 5,
    caractérisée en ce que
    la plaque d'induit (17) est réalisée avec un bord périphérique (13) comprenant un aplatissement pour former l'étranglement magnétique (31).
EP11002924.6A 2010-07-07 2011-04-07 Soupape de réglage de pression Not-in-force EP2413333B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010026501A DE102010026501A1 (de) 2010-07-07 2010-07-07 Druckregelventil

Publications (3)

Publication Number Publication Date
EP2413333A2 EP2413333A2 (fr) 2012-02-01
EP2413333A3 EP2413333A3 (fr) 2015-01-28
EP2413333B1 true EP2413333B1 (fr) 2018-01-24

Family

ID=44773922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11002924.6A Not-in-force EP2413333B1 (fr) 2010-07-07 2011-04-07 Soupape de réglage de pression

Country Status (4)

Country Link
EP (1) EP2413333B1 (fr)
DE (1) DE102010026501A1 (fr)
ES (1) ES2666224T3 (fr)
HU (1) HUE036572T2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015109077A1 (de) * 2015-06-09 2016-12-15 Kendrion (Villingen) Gmbh Volumenstromgeregeltes Sitzventil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704579A1 (de) * 1987-02-13 1988-08-25 Bosch Gmbh Robert Magnetventil fuer kraftstoffeinspritzpumpen von brennkraftmaschinen
JP2003156169A (ja) * 2001-09-04 2003-05-30 Denso Corp 電磁式流体制御装置
DE10225162A1 (de) * 2002-06-06 2003-12-18 Thomas Magnete Gmbh Magnetanordnung
DE102007011050A1 (de) * 2007-03-07 2008-09-11 Robert Bosch Gmbh Magnetkreis für Magnetventil
DE102007013525A1 (de) 2007-03-21 2008-09-25 Robert Bosch Gmbh Druckregelventil
US8083206B2 (en) * 2008-07-08 2011-12-27 Caterpillar Inc. Precision ground armature assembly for solenoid actuator and fuel injector using same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2413333A2 (fr) 2012-02-01
EP2413333A3 (fr) 2015-01-28
ES2666224T3 (es) 2018-05-03
DE102010026501A1 (de) 2012-01-12
HUE036572T2 (hu) 2018-07-30

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