WO2019233661A1 - Electromagnetically actuatable suction valve and high-pressure fuel pump - Google Patents
Electromagnetically actuatable suction valve and high-pressure fuel pump Download PDFInfo
- Publication number
- WO2019233661A1 WO2019233661A1 PCT/EP2019/059250 EP2019059250W WO2019233661A1 WO 2019233661 A1 WO2019233661 A1 WO 2019233661A1 EP 2019059250 W EP2019059250 W EP 2019059250W WO 2019233661 A1 WO2019233661 A1 WO 2019233661A1
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- WO
- WIPO (PCT)
- Prior art keywords
- valve
- stop element
- armature
- mammal
- recesses
- 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.)
- Ceased
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
- F02M59/368—Pump inlet valves being closed when actuated
-
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0452—Distribution members, e.g. valves
- F04B1/0461—Conical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/102—Disc valves
- F04B53/1035—Disc valves with means for limiting the opening height
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0686—Braking, pressure equilibration, shock absorbing
- F16K31/0693—Pressure equilibration of the armature
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- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
Definitions
- the invention relates to an electromagnetically actuated mammary valve for a high-pressure fuel pump with the features of the preamble of claim 1. Furthermore, the invention relates to a high-pressure fuel pump with an electromagnetically actuated mammalian valve.
- an electromagnetically operable inlet valve for a high-pressure pump in particular a fuel injection system, emerges by way of example, which comprises a valve member movable between an open position and a closed position and an electromagnetic actuator for actuating the valve member.
- the electromagnetic actuator has an armature acting at least indirectly on the valve member and a magnetic coil for acting on the armature.
- the magnet armature is guided in a liftable manner via its outer casing in a recess of a carrier element. Since over the service life of the intake valve of the
- Magnetic anchor performs many strokes that lead to wear on the outer jacket of the armature and / or on the support member, at least one of these surfaces has been smoothed and / or work hardened in a post-processing step. In this way, the robustness of the inlet valve increases. The smoothing also counteracts deposits on the guide surfaces, which could affect the lifting movement of the armature.
- the present invention has for its object to provide an electromagnetically actuated mammalian valve for a high-pressure fuel pump, the highly dynamic armature movements and thus short, reproducible Valve switching times enabled. In this way, valve switching time fluctuations should be counteracted.
- the proposed for a high-pressure fuel pump electromagnetically actuated mammalian valve comprises an annular solenoid for acting on a liftable anchor, the at least partially in one
- valve body is added.
- the valve body has an annular collar on which an annular stop element is supported and at least
- the stop element is in the region of the top, bottom and / or peripheral sides
- Stop element reduced with the anchor when it comes to rest against the stop element. This means that located between the armature and the stop element fluid is not completely displaced when striking the armature. Furthermore, faster fluid can flow in, when the armature moves away from the stop plate during the next stroke. In this way, a hydraulic bonding of the armature is counteracted on the stop element, so that the dynamics of the armature increases.
- Stop element can thus reduced valve switching times and a
- the unevenness of the abutment surface of the stop element does not consist of the front, but is only achieved by the deformation of the stop element when pressed into the annular collar of the valve body or by the interference fit.
- the tensions introduced into the stop element cause the stop element to deform elastically and / or plastically in the weakened areas.
- the stop element may therefore have been originally manufactured with a flat stop surface.
- the weakening recesses can be used in the manufacture of the
- Stop element directly molded or introduced later in a material-removing process.
- the stop surface of the pressed into the annular collar of the valve body stop member at least two elevations or
- Stop element are formed, in the area where it comes in each case to a collection or bulge when pressing the stop element in the annular collar.
- the at least two elevations or bulges preferably result in a circumferential wave profile, so that no continuous, annular contact surface, but individual contact points are created, which are arranged at a certain angular distance from each other.
- the stop element is rotationally symmetrical with respect to an angle a, which is smaller than 360 °.
- the angle a can be, for example, 180 °, 120 °, 90 °, 72 ° or 60 °. This means that when the stop element is rotated by the angle a, it is imaged onto itself.
- the Number of recesses arranged at the same angular distance from each other is accordingly 2, 3, 4, 5 or 6.
- the recesses may be arranged on the outer circumference side, so that they extend from radially outside to radially inside, over the entire height of the
- the recesses may also be formed on the underside facing the annular collar of the plate-shaped portion of the stop element and may be guided radially outward.
- the recesses are formed in a hollow cylindrical portion of the stop element, via which the stop element is pressed into the annular collar. This means that the stresses introduced into the stop element via the press fit are not uniformly distributed and the stop element is correspondingly deformed.
- the recesses may in particular extend from the underside of the hollow cylindrical portion in the direction of the plate-shaped portion. Pass it up to the plate-shaped section, divide the hollow-cylindrical section into stationary arcuate segments.
- the armature in the axial direction is penetrated by at least one flow opening.
- the flow-through allows for a stroke movement of the armature pressure equalization, since it connects above and below the anchor located pressure chambers together. Consequently, the flow-through opening promotes a quick return of the anchor.
- a plurality of decentralized flow openings are formed at the same angular distance from each other in the armature, so that a large total flow cross-section is created.
- the mass of the armature is reduced via the at least one through-flow opening, so that its dynamics continue to increase.
- the armature can be coupled to a liftable valve member of the mammal valve and acted upon in the direction of the valve member by the spring force of a spring.
- the spring force of the spring can be used to return the anchor. This is preferably designed so strong that it exerts an opening force on the valve member via the armature.
- the mammoth valve is preferably integrated in a housing part of the high-pressure fuel pump. In this way, a compact-built high-pressure fuel pump can be created.
- FIG. 1 is a schematic longitudinal section through a mammal valve according to the invention, which is integrated in a high-pressure fuel pump,
- FIG. 2 shows a side view of the stop element of the mammal valve of FIG. 1, FIG.
- FIG. 3 is a perspective view of the stop element of the mammal valve of Fig. 1,
- FIG. 4 is a perspective view of a second stop element
- Fig. 5 is a perspective view of a third stop element
- FIG. 6 is a perspective view of a fourth stop element.
- the illustrated in Fig. 1 electromagnetically actuated mammary valve 1 is integrated into a housing part 13 of a high-pressure fuel pump 2 in such a way that a valve member 11 of the mammal valve 1 via a housing part in the thirteenth trained bore 16 is carried hubbeweglich.
- the mammal valve 1 is used to fill a formed in the housing part 13 Hochdruckelementraums 17 with fuel.
- the high pressure element space 17 via the mammal valve 1 supplied fuel is compressed in the high-pressure element chamber 17 via the lifting movement of a pump piston 18 and then via a
- Outlet valve 19 a high-pressure accumulator (not shown) supplied.
- the valve member 11 of the mammal valve 1 opens into the high-pressure element space 17. In the closing direction, it is acted upon by the spring force of a valve spring 20, which pulls the valve member 11 in the direction of a valve seat 21.
- a valve spring 20 which pulls the valve member 11 in the direction of a valve seat 21.
- another spring 12 is provided, whose spring force is greater than that of the valve spring 20.
- the further spring 12 is supported on the one hand on an armature 4 which can be coupled to the valve member 11, and on the other hand on a pole core 14, which is opposite the armature 4 at a working air gap 15.
- the spring 12 presses the armature 4 against a stop element 7, which is supported on a collar 6 of a valve body 5.
- the stop element 7 defines an end position of the armature 4. In this position, the armature 4 or the spring force of the spring 12 holds the valve member 11 open.
- the magnetic coil 3 is energized, a magnetic field is formed whose magnetic force moves the armature 4 in the direction of the pole core 14 in order to close the working air gap 15. In this case, the armature 4 detaches from the valve member 11, so that the valve spring 20 is able to pull the valve member 11 into the valve seat 21.
- the armature 4 is surrounded by fuel. In order to allow pressure equalization at a stroke of the armature 4, the armature 4 has several in the same
- the mammal valve 1 of FIG. 1 has a stop element 7, which is shown in more detail in Figures 2 and 3.
- FIG. 2 and 3 it can be seen that the stop element 7 a platen-shaped section 7.1 and a hollow cylindrical section 7.2 has.
- the plate-shaped section 7.1 forms a stop surface 9 for the armature 4. Furthermore, the stop element 7 is above the plate-shaped
- Section 7.1 supported on the annular collar 6 of the valve body 5. About the hollow cylindrical section 7.2, the stop element 7 is pressed into the annular collar 6 of the valve body 5.
- the plate-shaped section 7.1 has more outer peripheral side
- Recesses 8 which extends radially inward almost to the
- the recesses 8 lead to a weakening of the stop element 7, so that the
- Stop element 7 deformed when pressed into the annular collar 6 of the valve body 5. As illustrated in FIG. 2 by a line, in the area of the recesses 8, the plate-shaped section 7.1 bulges during pressing in such a way that an uneven stop surface 9 is created. The contact area between the armature 4 and the stop element 7 is reduced in this way, with the result that a hydraulic bonding of the armature 4 is counteracted on the stop element 7.
- Stop element 7 for an inventive mammal valve 1 shown with which the same effect can be achieved.
- the stop element 7 shown in FIG. 4 has recesses 8, which are likewise formed in the plate-shaped section 7.1, but do not extend over the entire height of the plate-shaped section 7.1.
- the recesses 8 are on the abutment surface 9 opposite side, that is arranged on the underside of the plate-shaped bottom side and are guided to the radially outward.
- the stop element 7 has recesses 8 in the hollow cylindrical section 7.2.
- the recesses 8 are arranged at the same angular distance from each other, wherein the angular distance is 90 °.
- the stop element 7 four recesses 8.
- the stop element 7 shown in FIG. 6 has in the hollow cylindrical section 7.2 two large recesses 7, which are opposite to each other.
- the hollow cylindrical section 7.2 is therefore formed only by two circular arc-shaped segments. Over this, a deformation force is introduced into the stop element 7 during pressing into the annular collar 6, so that this deforms accordingly.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Beschreibung description
Titel: Title:
Elektromagnetisch betätigbares Säugventil und Kraftstoff-Hochdruckpumpe Electromagnetically operated mammal valve and high-pressure fuel pump
Die Erfindung betrifft ein elektromagnetisch betätigbares Säugventil für eine Kraftstoff-Hochdruckpumpe mit den Merkmalen des Oberbegriffs des Anspruchs 1. Ferner betrifft die Erfindung eine Kraftstoff-Hochdruckpumpe mit einem elektromagnetisch betätigbaren Säugventil. The invention relates to an electromagnetically actuated mammary valve for a high-pressure fuel pump with the features of the preamble of claim 1. Furthermore, the invention relates to a high-pressure fuel pump with an electromagnetically actuated mammalian valve.
Stand der Technik State of the art
Aus der DE 10 2016 211 679 Al geht beispielhaft ein elektromagnetisch betätigbares Einlassventil für eine Hochdruckpumpe, insbesondere eines Kraftstoffeinspritzsystems, hervor, das ein zwischen einer Öffnungsstellung und einer Schließstellung bewegbares Ventilglied sowie einen elektromagnetischen Aktor zur Betätigung des Ventilglieds umfasst. Der elektromagnetische Aktor weist einen zumindest mittelbar auf das Ventilglied wirkenden Magnetanker und eine Magnetspule zur Einwirkung auf den Magnetanker auf. Der Magnetanker ist über seinen Außenmantel in einer Ausnehmung eines Trägerelements hubbeweglich geführt. Da über die Betriebsdauer des Einlassventils der From DE 10 2016 211 679 A1, an electromagnetically operable inlet valve for a high-pressure pump, in particular a fuel injection system, emerges by way of example, which comprises a valve member movable between an open position and a closed position and an electromagnetic actuator for actuating the valve member. The electromagnetic actuator has an armature acting at least indirectly on the valve member and a magnetic coil for acting on the armature. The magnet armature is guided in a liftable manner via its outer casing in a recess of a carrier element. Since over the service life of the intake valve of the
Magnetanker viele Hubbewegungen ausführt, die zu einem Verschleiß am Außenmantel des Magnetankers und/oder am Trägerelement führen, ist zumindest eine dieser Oberflächen in einem Nachbearbeitungsschritt geglättet und/oder kaltverfestigt worden. Auf diese Weise erhöht sich die Robustheit des Einlassventils. Die Glättung wirkt zudem Ablagerungen an den Führungsflächen entgegen, welche die Hubbewegung des Magnetankers beeinträchtigen könnten. Magnetic anchor performs many strokes that lead to wear on the outer jacket of the armature and / or on the support member, at least one of these surfaces has been smoothed and / or work hardened in a post-processing step. In this way, the robustness of the inlet valve increases. The smoothing also counteracts deposits on the guide surfaces, which could affect the lifting movement of the armature.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein elektromagnetisch betätigbares Säugventil für eine Kraftstoff-Hochdruckpumpe anzugeben, das hoch dynamische Ankerbewegungen und damit kurze, reproduzierbare Ventilschaltzeiten ermöglicht. Auf diese Weise soll Ventilschaltzeitschwankungen entgegengewirkt werden. The present invention has for its object to provide an electromagnetically actuated mammalian valve for a high-pressure fuel pump, the highly dynamic armature movements and thus short, reproducible Valve switching times enabled. In this way, valve switching time fluctuations should be counteracted.
Zur Lösung der Aufgabe wird das elektromagnetisch betätigbare Säugventil mit den Merkmalen des Anspruchs 1 vorgeschlagen. Vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen. Ferner wird eine Kraftstoff-Hochdruckpumpe mit einem solchen Säugventil angegeben. To solve the problem, the electromagnetically actuated mammalian valve with the features of claim 1 is proposed. Advantageous developments of the invention can be found in the dependent claims. Further, a high pressure fuel pump is provided with such a mammalian valve.
Offenbarung der Erfindung Disclosure of the invention
Das für eine Kraftstoff-Hochdruckpumpe vorgeschlagene elektromagnetisch betätigbare Säugventil umfasst eine ringförmige Magnetspule zur Einwirkung auf einen hubbeweglichen Anker, der zumindest abschnittsweise in einem The proposed for a high-pressure fuel pump electromagnetically actuated mammalian valve comprises an annular solenoid for acting on a liftable anchor, the at least partially in one
Ventilkörper aufgenommen ist. Der Ventilkörper weist einen Ringbund auf, an dem ein ringförmiges Anschlagelement abgestützt und zumindest Valve body is added. The valve body has an annular collar on which an annular stop element is supported and at least
abschnittsweise in den Ringbund eingepresst ist. Erfindungsgemäß ist das Anschlagelement im Bereich von ober-, unter- und/oder umfangseitig partially pressed into the annular collar. According to the invention, the stop element is in the region of the top, bottom and / or peripheral sides
angeordneten Ausnehmungen gezielt geschwächt und verformt, so dass das Anschlagelement eine dem Anker zugewandte unebene Anschlagfläche ausbildet. arranged recesses selectively weakened and deformed, so that the stop element forms an anchor facing the uneven stop surface.
Durch die unebene Anschlagfläche wird der Kontaktbereich des Due to the uneven stop surface, the contact area of the
Anschlagelements mit dem Anker verringert, wenn dieser zur Anlage an dem Anschlagelement gelangt. Das heißt, dass zwischen dem Anker und dem Anschlagelement befindliches Fluid beim Anschlägen des Ankers nicht vollständig verdrängt wird. Ferner kann schneller Fluid nachströmen, wenn sich der Anker beim nächsten Hub von der Anschlagplatte wegbewegt. Auf diese Weise wird einem hydraulischen Kleben des Ankers am Anschlagelement entgegengewirkt, so dass die Dynamik des Ankers steigt. Stop element reduced with the anchor when it comes to rest against the stop element. This means that located between the armature and the stop element fluid is not completely displaced when striking the armature. Furthermore, faster fluid can flow in, when the armature moves away from the stop plate during the next stroke. In this way, a hydraulic bonding of the armature is counteracted on the stop element, so that the dynamics of the armature increases.
Durch Reduzierung des Kontaktbereichs zwischen dem Anker und dem By reducing the contact area between the armature and the
Anschlagelement können somit reduzierte Ventilschaltzeiten sowie eine Stop element can thus reduced valve switching times and a
Reduzierung der Ventilschaltzeitschwankungen erzielt werden. Die Unebenheit der Anschlagfläche des Anschlagelements besteht dabei nicht von vorne herein, sondern wird erst durch die Verformung des Anschlagelements beim Einpressen in den Ringbund des Ventilkörpers bzw. durch den Presssitz erreicht. Die hierüber in das Anschlagelement eingebrachten Spannungen bewirken, dass sich das Anschlagelement in den geschwächten Bereichen elastisch und/oder plastisch verformt. Das Anschlagelement kann demnach ursprünglich mit einer ebenen Anschlagfläche gefertigt worden sein. Die der Schwächung dienenden Ausnehmungen können bei der Fertigung des Reduction of the valve timing fluctuations can be achieved. The unevenness of the abutment surface of the stop element does not consist of the front, but is only achieved by the deformation of the stop element when pressed into the annular collar of the valve body or by the interference fit. The tensions introduced into the stop element cause the stop element to deform elastically and / or plastically in the weakened areas. The stop element may therefore have been originally manufactured with a flat stop surface. The weakening recesses can be used in the manufacture of the
Anschlagelements direkt mit eingeformt oder in einem materialabtragenden Verfahren nachträglich eingebracht worden sein. Stop element directly molded or introduced later in a material-removing process.
Bevorzugt weist die Anschlagfläche des in den Ringbund des Ventilkörpers eingepressten Anschlagelements mindestens zwei Erhebungen oder Preferably, the stop surface of the pressed into the annular collar of the valve body stop member at least two elevations or
Aufwölbungen auf. Das heißt, dass mindestens zwei Ausnehmungen im Bulges on. This means that at least two recesses in the
Anschlagelement ausgebildet sind, im Bereich derer es beim Einpressen des Anschlagelements in den Ringbund jeweils zu einer Erhebung oder Aufwölbung kommt. Die mindestens zwei Erhebungen bzw. Aufwölbungen ergeben vorzugsweise ein umlaufendes Wellenprofil, so dass keine durchgehende, ringförmige Kontaktfläche, sondern einzelne Kontaktpunkte geschaffen werden, die in einem bestimmten Winkelabstand zueinander angeordnet sind. Stop element are formed, in the area where it comes in each case to a collection or bulge when pressing the stop element in the annular collar. The at least two elevations or bulges preferably result in a circumferential wave profile, so that no continuous, annular contact surface, but individual contact points are created, which are arranged at a certain angular distance from each other.
Des Weiteren wird vorgeschlagen, dass die ober-, unter- und/oder umfangseitig in das Anschlagelement eingebrachten Ausnehmungen im gleichen Furthermore, it is proposed that the recesses introduced at the top, bottom and / or peripherally into the stop element in the same
Winkelabstand zueinander angeordnet sind. Dadurch ist sichergestellt, dass das Anschlagelement beim Einpressen in den Ringbund gleichmäßig verformt wird. Bei der Verformung entstehende Erhebungen oder Aufwölbungen sind demnach ebenfalls in gleichem Winkelabstand zueinander angeordnet, was den Vorteil aufweist, dass das Anschlagelement beim Anschlägen des Ankers gleichmäßig belastet wird. Angular distance from each other are arranged. This ensures that the stop element is uniformly deformed during pressing in the annular collar. Elevations or bulges arising during the deformation are therefore likewise arranged at the same angular distance from one another, which has the advantage that the stop element is uniformly loaded when the armature is struck.
Vorteilhafterweise ist das Anschlagelement drehsymmetrisch in Bezug auf einen Winkel a ausgebildet, der kleiner als 360° ist. Der Winkel a kann beispielsweise 180°, 120°, 90°, 72° oder 60° betragen. Das heißt, dass bei einer Drehung des Anschlagelements um den Winkel a es auf sich selbst abgebildet wird. Die Anzahl der im gleichen Winkelabstand zueinander angeordneten Ausnehmungen beträgt dementsprechend 2, 3, 4, 5 oder 6. Advantageously, the stop element is rotationally symmetrical with respect to an angle a, which is smaller than 360 °. The angle a can be, for example, 180 °, 120 °, 90 °, 72 ° or 60 °. This means that when the stop element is rotated by the angle a, it is imaged onto itself. The Number of recesses arranged at the same angular distance from each other is accordingly 2, 3, 4, 5 or 6.
Gemäß einer bevorzugten Ausführungsform der Erfindung sind die zur According to a preferred embodiment of the invention, the
Schwächung vorgesehenen Ausnehmungen in einem die Anschlagfläche ausbildenden plattenförmigen Abschnitt des Anschlagelements ausgebildet. Die Anordnung der Ausnehmungen erfolgt demnach in dem zu verformenden Abschnitt. Die Verformung ist dadurch gut kontrollierbar. Beispielsweise können die Ausnehmungen außenumfangseitig angeordnet sein, so dass sie sich von radial außen nach radial innen, und zwar über die gesamte Höhe des Weakening provided recesses formed in a stop surface forming plate-shaped portion of the stop element. The arrangement of the recesses takes place accordingly in the section to be deformed. The deformation is thus easily controlled. For example, the recesses may be arranged on the outer circumference side, so that they extend from radially outside to radially inside, over the entire height of the
plattenförmigen Abschnitts erstrecken. Die Ausnehmungen können aber auch an der dem Ringbund zugewandten Unterseite des plattenförmigen Abschnitts des Anschlagelements ausgebildet und bis nach radial außen geführt sein. plate-shaped portion extend. However, the recesses may also be formed on the underside facing the annular collar of the plate-shaped portion of the stop element and may be guided radially outward.
Alternativ oder ergänzend wird vorgeschlagen, dass die Ausnehmungen in einem hohlzylinderförmigen Abschnitt des Anschlagelements ausgebildet sind, über den das Anschlagelement in den Ringbund eingepresst ist. Das heißt, dass die über den Presssitz in das Anschlagelement eingebrachten Spannungen nicht gleichmäßig verteilt sind und das Anschlagelement entsprechend verformt wird. Die Ausnehmungen können sich insbesondere von der Unterseite des hohlzylinderförmigen Abschnitts in Richtung des plattenförmigen Abschnitts erstrecken. Reichen sie bis an den plattenförmigen Abschnitt heran, unterteilen sie den hohlzylinderförmigen Abschnitt in stehenbleibende kreisbogenförmige Segmente. Alternatively or additionally, it is proposed that the recesses are formed in a hollow cylindrical portion of the stop element, via which the stop element is pressed into the annular collar. This means that the stresses introduced into the stop element via the press fit are not uniformly distributed and the stop element is correspondingly deformed. The recesses may in particular extend from the underside of the hollow cylindrical portion in the direction of the plate-shaped portion. Pass it up to the plate-shaped section, divide the hollow-cylindrical section into stationary arcuate segments.
Darüber hinaus wird vorgeschlagen, dass der Anker in axialer Richtung von mindestens einer Durchströmöffnung durchsetzt ist. Die Durchströmöffnung ermöglicht bei einer Hubbewegung des Ankers einen Druckausgleich, da sie ober- und unterhalb des Ankers gelegene Druckräume miteinander verbindet. Folglich fördert die Durchströmöffnung eine schnelle Rückstellung des Ankers. Vorzugsweise sind mehrere dezentral angeordnete Durchströmöffnungen in gleichem Winkelabstand zueinander im Anker ausgebildet, so dass ein großer Gesamtströmungsquerschnitt geschaffen wird. Über die mindestens eine Durchströmöffnung wird zugleich die Masse des Ankers reduziert, so dass dessen Dynamik weiter steigt. Bevorzugt ist der Anker mit einem hubbeweglichen Ventilglied des Säugventils koppelbar und in Richtung des Ventilglieds von der Federkraft einer Feder beaufschlagt. Die Federkraft der Feder kann zur Rückstellung des Ankers genutzt werden. Diese ist vorzugsweise so stark ausgelegt, dass sie über den Anker eine öffnende Kraft auf das Ventilglied ausübt. In addition, it is proposed that the armature in the axial direction is penetrated by at least one flow opening. The flow-through allows for a stroke movement of the armature pressure equalization, since it connects above and below the anchor located pressure chambers together. Consequently, the flow-through opening promotes a quick return of the anchor. Preferably, a plurality of decentralized flow openings are formed at the same angular distance from each other in the armature, so that a large total flow cross-section is created. At the same time, the mass of the armature is reduced via the at least one through-flow opening, so that its dynamics continue to increase. Preferably, the armature can be coupled to a liftable valve member of the mammal valve and acted upon in the direction of the valve member by the spring force of a spring. The spring force of the spring can be used to return the anchor. This is preferably designed so strong that it exerts an opening force on the valve member via the armature.
Die darüber hinaus vorgeschlagene Kraftstoff-Hochdruckpumpe für ein The additionally proposed high-pressure fuel pump for a
Kraftstoffeinspritzsystem zeichnet sich dadurch aus, dass sie ein Fuel injection system is characterized by the fact that they
erfindungsgemäßes Säugventil aufweist. Das Säugventil ist dabei bevorzugt in ein Gehäuseteil der Kraftstoff-Hochdruckpumpe integriert. Auf diese Weise kann eine kompakt bauende Kraftstoff-Hochdruckpumpe geschaffen werden. Has inventive mammal valve. The mammoth valve is preferably integrated in a housing part of the high-pressure fuel pump. In this way, a compact-built high-pressure fuel pump can be created.
Bevorzugte Ausführungsformen der Erfindung werden nachfolgend anhand der beigefügten Zeichnungen näher erläutert. Diese zeigen: Preferred embodiments of the invention are explained below with reference to the accompanying drawings. These show:
Fig. 1 einen schematischen Längsschnitt durch ein erfindungsgemäßes Säugventil, das in eine Kraftstoff-Hochdruckpumpe integriert ist, 1 is a schematic longitudinal section through a mammal valve according to the invention, which is integrated in a high-pressure fuel pump,
Fig. 2 eine Seitenansicht des Anschlagelements des Säugventils der Fig. 1, FIG. 2 shows a side view of the stop element of the mammal valve of FIG. 1, FIG.
Fig. 3 eine perspektivische Darstellung des Anschlagelements des Säugventils der Fig. 1, 3 is a perspective view of the stop element of the mammal valve of Fig. 1,
Fig. 4 eine perspektivische Darstellung eines zweiten Anschlagelements, 4 is a perspective view of a second stop element,
Fig. 5 eine perspektivische Darstellung eines dritten Anschlagelements und Fig. 5 is a perspective view of a third stop element and
Fig. 6 eine perspektivische Darstellung eines vierten Anschlagelements. 6 is a perspective view of a fourth stop element.
Ausführliche Beschreibung der Zeichnungen Detailed description of the drawings
Das in der Fig. 1 dargestellte elektromagnetisch betätigbare Säugventil 1 ist in ein Gehäuseteil 13 einer Kraftstoff-Hochdruckpumpe 2 in der Weise integriert, dass ein Ventilglied 11 des Säugventils 1 über eine im Gehäuseteil 13 ausgebildete Bohrung 16 hubbeweglich geführt ist. Das Säugventil 1 dient der Befüllung eines im Gehäuseteil 13 ausgebildeten Hochdruckelementraums 17 mit Kraftstoff. Der dem Hochdruckelementraum 17 über das Säugventil 1 zugeführte Kraftstoff wird im Hochdruckelementraum 17 über die Hubbewegung eines Pumpenkolbens 18 komprimiert und anschließend über ein The illustrated in Fig. 1 electromagnetically actuated mammary valve 1 is integrated into a housing part 13 of a high-pressure fuel pump 2 in such a way that a valve member 11 of the mammal valve 1 via a housing part in the thirteenth trained bore 16 is carried hubbeweglich. The mammal valve 1 is used to fill a formed in the housing part 13 Hochdruckelementraums 17 with fuel. The high pressure element space 17 via the mammal valve 1 supplied fuel is compressed in the high-pressure element chamber 17 via the lifting movement of a pump piston 18 and then via a
Auslassventil 19 einem Hochdruckspeicher (nicht dargestellt) zugeführt. Outlet valve 19 a high-pressure accumulator (not shown) supplied.
Das Ventilglied 11 des Säugventils 1 öffnet in den Hochdruckelementraum 17 hinein. In Schließrichtung wird es von der Federkraft einer Ventilfeder 20 beaufschlagt, die das Ventilglied 11 in Richtung eines Ventilsitzes 21 zieht. Um das Säugventil 1 entgegen der Federkraft der Ventilfeder 20 zu öffnen oder geöffnet zu halten, ist eine weitere Feder 12 vorgesehen, deren Federkraft größer als die der Ventilfeder 20 ist. Die weitere Feder 12 ist einerseits an einem mit dem Ventilglied 11 koppelbaren Anker 4, andererseits an einem Polkern 14 abgestützt, der dem Anker 4 an einem Arbeitsluftspalt 15 gegenüberliegt. Bleibt eine zur Einwirkung auf den Anker 4 vorgesehene Magnetspule 3 unbestromt, drückt die Feder 12 den Anker 4 gegen ein Anschlagelement 7, das an einem Ringbund 6 eines Ventilkörpers 5 abgestützt ist. Das Anschlagelement 7 definiert eine Endlage des Ankers 4. In dieser Lage hält der Anker 4 bzw. die Federkraft der Feder 12 das Ventilglied 11 geöffnet. Wird die Magnetspule 3 bestromt, bildet sich ein Magnetfeld aus, dessen Magnetkraft den Anker 4 in Richtung des Polkerns 14 bewegt, um den Arbeitsluftspalt 15 zu schließen. Dabei löst sich der Anker 4 vom Ventilglied 11, so dass die Ventilfeder 20 das Ventilglied 11 in den Ventilsitz 21 zu ziehen vermag. The valve member 11 of the mammal valve 1 opens into the high-pressure element space 17. In the closing direction, it is acted upon by the spring force of a valve spring 20, which pulls the valve member 11 in the direction of a valve seat 21. To open the mammal valve 1 against the spring force of the valve spring 20 or keep it open, another spring 12 is provided, whose spring force is greater than that of the valve spring 20. The further spring 12 is supported on the one hand on an armature 4 which can be coupled to the valve member 11, and on the other hand on a pole core 14, which is opposite the armature 4 at a working air gap 15. Remains a provided for acting on the armature 4 solenoid 3 de-energized, the spring 12 presses the armature 4 against a stop element 7, which is supported on a collar 6 of a valve body 5. The stop element 7 defines an end position of the armature 4. In this position, the armature 4 or the spring force of the spring 12 holds the valve member 11 open. When the magnetic coil 3 is energized, a magnetic field is formed whose magnetic force moves the armature 4 in the direction of the pole core 14 in order to close the working air gap 15. In this case, the armature 4 detaches from the valve member 11, so that the valve spring 20 is able to pull the valve member 11 into the valve seat 21.
Der Anker 4 ist von Kraftstoff umströmt. Um bei einem Hub des Ankers 4 einen Druckausgleich zu ermöglichen, weist der Anker 4 mehrere in gleichem The armature 4 is surrounded by fuel. In order to allow pressure equalization at a stroke of the armature 4, the armature 4 has several in the same
Winkelabstand zueinander angeordnete Durchströmöffnungen 10 auf, die den Arbeitsluftspalt 15 mit einem Zulaufbereich 22 der Hochdruckpumpe 2 verbinden. Somit kann Kraftstoff aus dem Arbeitsluftspalt 15 in Richtung des Zulaufbereichs verdrängt werden. Dadurch steigt die Dynamik des Ankers 4. Angular distance from each other arranged flow openings 10, which connect the working air gap 15 with an inlet region 22 of the high-pressure pump 2. Thus, fuel can be displaced from the working air gap 15 in the direction of the inlet region. As a result, the dynamics of the armature 4 increases.
Um die Dynamik des Ankers 4 weiter zu steigern, weist das Säugventil 1 der Fig. 1 ein Anschlagelement 7 auf, das in den Figuren 2 und 3 näher dargestellt ist.In order to further increase the dynamics of the armature 4, the mammal valve 1 of FIG. 1 has a stop element 7, which is shown in more detail in Figures 2 and 3.
Den Figuren 2 und 3 ist zu entnehmen, dass das Anschlagelement 7 einen platenförmigen Abschnit 7.1 und einen hohlzylinderförmigen Abschnit 7.2 aufweist. Der platenförmige Abschnit 7.1 bildet eine Anschlagfläche 9 für den Anker 4 aus. Ferner ist das Anschlagelement 7 über den platenförmigen Figures 2 and 3 it can be seen that the stop element 7 a platen-shaped section 7.1 and a hollow cylindrical section 7.2 has. The plate-shaped section 7.1 forms a stop surface 9 for the armature 4. Furthermore, the stop element 7 is above the plate-shaped
Abschnit 7.1 am Ringbund 6 des Ventilkörpers 5 abgestützt. Über den hohlzylinderförmigen Abschnit 7.2 ist das Anschlagelement 7 in den Ringbund 6 des Ventilkörpers 5 eingepresst. Section 7.1 supported on the annular collar 6 of the valve body 5. About the hollow cylindrical section 7.2, the stop element 7 is pressed into the annular collar 6 of the valve body 5.
Der platenförmige Abschnit 7.1 weist außenumfangseitig mehrere The plate-shaped section 7.1 has more outer peripheral side
Ausnehmungen 8 auf, die sich nach radial innen bis fast an den Recesses 8, which extends radially inward almost to the
hohlzylinderförmigen Abschnit 7.2 erstrecken. Die Ausnehmungen 8 führen zu einer Schwächung des Anschlagelements 7, so dass sich das hollow cylindrical section 7.2 extend. The recesses 8 lead to a weakening of the stop element 7, so that the
Anschlagelement 7 beim Einpressen in den Ringbund 6 des Ventilkörpers 5 verformt. Wie in der Fig. 2 durch eine Linie verdeutlicht, wölbt sich im Bereich der Ausnehmungen 8 der platenförmige Abschnit 7.1 beim Einpressen derart auf, dass eine unebene Anschlagfläche 9 geschaffen wird. Der Kontaktbereich zwischen dem Anker 4 und dem Anschlagelement 7 wird auf diese Weise reduziert, was zur Folge hat, dass einem hydraulischen Kleben des Ankers 4 am Anschlagelement 7 entgegengewirkt wird. Stop element 7 deformed when pressed into the annular collar 6 of the valve body 5. As illustrated in FIG. 2 by a line, in the area of the recesses 8, the plate-shaped section 7.1 bulges during pressing in such a way that an uneven stop surface 9 is created. The contact area between the armature 4 and the stop element 7 is reduced in this way, with the result that a hydraulic bonding of the armature 4 is counteracted on the stop element 7.
In den nachfolgenden Figuren sind weitere Ausführungsformen eines In the following figures, further embodiments of a
Anschlagelements 7 für ein erfindungsgemäßes Säugventil 1 dargestellt, mit denen die gleiche Wirkung erzielbar ist. Stop element 7 for an inventive mammal valve 1 shown, with which the same effect can be achieved.
Das in der Fig. 4 dargestellte Anschlagelement 7 weist Ausnehmungen 8 auf, die ebenfalls im platenförmigen Abschnit 7.1 ausgebildet sind, sich allerdings nicht über die gesamte Höhe des platenförmigen Abschnits 7.1 erstrecken. Die Ausnehmungen 8 sind auf der der Anschlagfläche 9 abgewandten Seite, das heißt auf der Unterseite des platenförmigen unterseitig angeordnet und sind bis nach radial außen geführt. The stop element 7 shown in FIG. 4 has recesses 8, which are likewise formed in the plate-shaped section 7.1, but do not extend over the entire height of the plate-shaped section 7.1. The recesses 8 are on the abutment surface 9 opposite side, that is arranged on the underside of the plate-shaped bottom side and are guided to the radially outward.
Das in der Fig. 5 dargestellte Anschlagelement 7 weist Ausnehmungen 8 im hohlzylinderförmigen Abschnit 7.2 auf. Die Ausnehmungen 8 sind in gleichem Winkelabstand zueinander angeordnet, wobei der Winkelabstand 90° beträgt. Insgesamt weist das Anschlagelement 7 vier Ausnehmungen 8 auf. Das in der Fig. 6 dargestellte Anschlagelement 7 weist im hohlzylinderförmigen Abschnitt 7.2 zwei großflächige Ausnehmungen 7, die einander gegenüberliegen. Der hohlzylinderförmige Abschnitt 7.2 wird daher nur noch durch zwei kreisbogenförmige Segmente gebildet. Hierüber wird beim Einpressen in den Ringbund 6 eine Verformungskraft in das Anschlagelement 7 eingeleitet, so dass sich dieses entsprechend verformt. 5 has recesses 8 in the hollow cylindrical section 7.2. The recesses 8 are arranged at the same angular distance from each other, wherein the angular distance is 90 °. Overall, the stop element 7 four recesses 8. The stop element 7 shown in FIG. 6 has in the hollow cylindrical section 7.2 two large recesses 7, which are opposite to each other. The hollow cylindrical section 7.2 is therefore formed only by two circular arc-shaped segments. Over this, a deformation force is introduced into the stop element 7 during pressing into the annular collar 6, so that this deforms accordingly.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018208885.3 | 2018-06-06 | ||
| DE102018208885.3A DE102018208885A1 (en) | 2018-06-06 | 2018-06-06 | Electromagnetically operated suction valve and high-pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019233661A1 true WO2019233661A1 (en) | 2019-12-12 |
Family
ID=66182558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2019/059250 Ceased WO2019233661A1 (en) | 2018-06-06 | 2019-04-11 | Electromagnetically actuatable suction valve and high-pressure fuel pump |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102018208885A1 (en) |
| WO (1) | WO2019233661A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010061793A1 (en) * | 2009-12-29 | 2011-06-30 | Robert Bosch GmbH, 70469 | Electromagnetically actuated switching valve, in particular quantity control valve in particular for controlling the delivery rate of a high-pressure fuel pump |
| DE102016208973A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
| DE102016208961A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
| DE102016208956A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
| DE102016211679A1 (en) | 2016-06-29 | 2018-01-04 | Robert Bosch Gmbh | Electromagnetically actuated inlet valve and high-pressure pump with inlet valve |
| DE102016214884A1 (en) * | 2016-08-10 | 2018-02-15 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
-
2018
- 2018-06-06 DE DE102018208885.3A patent/DE102018208885A1/en active Pending
-
2019
- 2019-04-11 WO PCT/EP2019/059250 patent/WO2019233661A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010061793A1 (en) * | 2009-12-29 | 2011-06-30 | Robert Bosch GmbH, 70469 | Electromagnetically actuated switching valve, in particular quantity control valve in particular for controlling the delivery rate of a high-pressure fuel pump |
| DE102016208973A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
| DE102016208961A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
| DE102016208956A1 (en) * | 2016-05-24 | 2017-11-30 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
| DE102016211679A1 (en) | 2016-06-29 | 2018-01-04 | Robert Bosch Gmbh | Electromagnetically actuated inlet valve and high-pressure pump with inlet valve |
| DE102016214884A1 (en) * | 2016-08-10 | 2018-02-15 | Robert Bosch Gmbh | Electromagnetically operated suction valve and high-pressure fuel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018208885A1 (en) | 2019-12-12 |
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