WO2019211021A1 - Valve device for a high-pressure pump - Google Patents
Valve device for a high-pressure pump Download PDFInfo
- Publication number
- WO2019211021A1 WO2019211021A1 PCT/EP2019/054174 EP2019054174W WO2019211021A1 WO 2019211021 A1 WO2019211021 A1 WO 2019211021A1 EP 2019054174 W EP2019054174 W EP 2019054174W WO 2019211021 A1 WO2019211021 A1 WO 2019211021A1
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- Prior art keywords
- valve
- pressure pump
- valve body
- valve device
- housing
- Prior art date
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Classifications
-
- 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
- F04B53/1087—Valve seats
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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
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
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- 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
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- 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
Definitions
- the invention relates to a valve device, and a high-pressure pump and manufacturing method for producing the valve device and the
- Valve devices for example exhaust valves of a high-pressure pump of a fuel system of an internal combustion engine, are known from the market. Frequently, such valve devices have a valve body pressed into a housing and a movable valve element which rests against a flat sealing seat of the valve body when the valve device is closed with a planar sealing section.
- the present invention is based on the recognition that, in the closed state with a planar sealing section of the valve element on a flat sealing seat of the valve body, there are adhesion forces which depend strongly on the size of the surface with which the sealing section of the valve element comes to rest on the sealing seat of the valve body. These adhesive effects delay the opening of the valve.
- valves are used as outlet valves in high-pressure pumps, pressure peaks occur in the delivery chamber of the pump and the opening of the valve takes place very abruptly in connection, which in addition to a reduced
- the sealing portion is formed as a flat surface and the sealing seat is formed as a conical annular surface, so that the sealing portion rests with closed valve means along a ring line on the sealing seat.
- valve devices according to the invention and the high-pressure pumps according to the invention work quieter and more efficiently than conventional valve devices and high-pressure pumps.
- an object along a ring line is understood as a component which can come between a flat surface and a surface having the shape of a ring cone. If, as a result of the concern, an elastic - but not plastic - deformation of the annular conical surface and / or the flat surface is concerned, the abutment is still considered to be linear, even if the width of the contact line thereby temporarily assumes a value other than zero ,
- the sealing seat and the sealing portion enclose with one another an angle a which is greater than 0.05 ° and / or which is smaller than 2 °.
- High-pressure pumps according to the invention have a valve device of the type described.
- the valve body can in particular be pressed directly or indirectly into the housing of the high-pressure pump.
- the invention also includes a manufacturing method for producing the
- valve device It provides that the valve body initially has a flat sealing seat surface, which can be accomplished with little effort and very high precision. It is further contemplated that the valve body is pressed into the housing, wherein the formerly flat sealing seat surface passes through the acting from outside to inside pressure in the valve body into a conical annular surface. The result is a precise and easy to produce sealing seat surface with the desired geometry.
- the solution according to the invention also has the advantage that a very low roughness of the sealing surfaces can be achieved.
- the pressing of the valve body into the housing takes place with a radial excess of not less than 0.32%.
- a valve body would be introduced, which (unpressed and at the same temperature) has a diameter of not less than 12.038 mm. This excess, which exceeds the previously known, ensures that the desired deformation of the valve body occurs.
- Figure 1 is a simplified schematic of a fuel system with a
- Figure 2 is a simplified sectional view of an embodiment of
- FIG. 3 shows a detailed view of the area designated III in FIG.
- FIG. 1 shows a fuel system 10 of an internal combustion engine in a greatly simplified representation. Fuel is supplied from a fuel tank 12 via a suction line 14, by means of a prefeed pump 16, via a low-pressure line 18, and via an inlet valve 20 to a delivery chamber 23 of a high-pressure pump 24.
- the intake valve 20 is, for example, a quantity control valve and actuated by an electromagnet.
- an electromagnet a piezoactuator or a hydraulic actuator can also be used, for example.
- the high-pressure pump 24 has an outlet valve, which is designed in the form of a valve device 22 described in more detail below.
- the valve device 22 communicates via a high-pressure line 26 with a high-pressure accumulator 28.
- the prefeed pump 16 delivers fuel from the fuel tank 12 into the low-pressure line 18
- valve device 22 The function of the valve device 22 is to open in a delivery phase of the high-pressure pump 24 to a fluid connection between the
- High-pressure accumulator 28 can be filled with pressurized fluid.
- the valve device 22 closes in order to prevent undesired reflux of fluid from the high-pressure accumulator 28 into the delivery chamber 23.
- FIGS. 2 and 3 show an embodiment of the valve device 22 and the high-pressure pump 24 according to FIG. 1 in a simplified form
- Valve device 22 are substantially rotationally symmetrical about a longitudinal axis 29 and comprise a housing 30 of the high-pressure pump 24, a pressed into the housing 30 valve body 60 with a sealing seat 32, against which a sealing portion 34 of a valve element 36 with closed valve device 22.
- the valve device 22 has, upstream of the sealing seat 32, a flow channel 38 extending parallel to the longitudinal axis 29.
- the sealing portion 34 is formed as a flat surface and the sealing seat 32 is formed as a conical annular surface, so that the sealing portion 34 rests with closed valve device 22 along a ring line 65 on the sealing seat 32.
- the sealing seat 32 and the sealing portion 34 close in the example an angle a with each other, which is 1 °.
- valve device 22 and the high-pressure pump 24 shown in FIG. 2 are produced in that the valve body 60 initially has a flat sealing seat surface 32, which after pressing the valve body 60 into the housing 30 of FIG
- High pressure pump 28 merges into a conical annular surface.
- the pressing is done in this example with an excess of 0.32%.
- Both the housing 30 and the valve body 60 are made of stainless steel in the example.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a valve device for a high-pressure pump (24), comprising a valve body (60) pressed into a housing (30), and a movable valve element (36) which, with the valve device (22) closed, bears with a sealing portion (34) against a seal seat (32) of the valve body (60), characterised in that the sealing portion (34) is designed as a planar surface and the seal seat (32) is designed as a conical annular surface, such that, with the valve device (22) closed, the sealing portion (34) bears against the seal seat (32) along an annular line (65).
Description
Beschreibung description
Titel title
Ventileinrichtunq für eine Hochdruckpumpe Valve device for a high-pressure pump
Stand der Technik State of the art
Die Erfindung betrifft eine Ventileinrichtung, sowie eine Hochdruckpumpe sowie Fertigungsverfahren zur Herstellung der Ventileinrichtung und der The invention relates to a valve device, and a high-pressure pump and manufacturing method for producing the valve device and the
Hochdruckpumpe. High pressure pump.
Ventileinrichtungen, beispielsweise Auslassventile einer Hochdruckpumpe eines Kraftstoffsystems einer Brennkraftmaschine, sind vom Markt her bekannt. Häufig weisen solche Ventileinrichtungen einen in einem Gehäuse eingepressten Ventilkörper und ein bewegliches Ventilelement auf, das bei geschlossener Ventileinrichtung mit einem planen Dichtabschnitt an einem planen Dichtsitz des Ventilkörpers anliegt. Valve devices, for example exhaust valves of a high-pressure pump of a fuel system of an internal combustion engine, are known from the market. Frequently, such valve devices have a valve body pressed into a housing and a movable valve element which rests against a flat sealing seat of the valve body when the valve device is closed with a planar sealing section.
Offenbarung der Erfindung Disclosure of the invention
Die vorliegende Erfindung beruht auf der Erkenntnis, dass es an Ventilen, die im geschlossen Zustand mit einem planen Dichtabschnitt des Ventilelements an einem planen Dichtsitz des Ventilkörpers anliegen, zu Adhäsionskräften kommt, die stark von der Größe der Fläche abhängen, mit der der Dichtabschnitt des Ventilelements an dem Dichtsitz des Ventilkörpers zur Anlage kommt. Diese Klebeeffekte verzögern das Öffnen des Ventils. The present invention is based on the recognition that, in the closed state with a planar sealing section of the valve element on a flat sealing seat of the valve body, there are adhesion forces which depend strongly on the size of the surface with which the sealing section of the valve element comes to rest on the sealing seat of the valve body. These adhesive effects delay the opening of the valve.
Kommen derartige Ventile als Auslassventile in Hochdruckpumpen zum Einsatz, treten Drucküberhöhungen im Förderraum der Pumpe auf und das Öffnen des Ventils erfolgt in Anschluss sehr abrupt, was neben einem verminderten If such valves are used as outlet valves in high-pressure pumps, pressure peaks occur in the delivery chamber of the pump and the opening of the valve takes place very abruptly in connection, which in addition to a reduced
Fördergrad der Pumpe und Verschleiß auch mit unerwünschten Geräuschen
einhergeht. Pump delivery rate and wear even with unwanted noise accompanied.
Erfindungsgemäß ist vorgesehen, dass der Dichtabschnitt als plane Fläche ausgebildet ist und der Dichtsitz als konische Ringfläche ausgebildet ist, sodass der Dichtabschnitt bei geschlossener Ventileinrichtung entlang einer Ringlinie an dem Dichtsitz anliegt. According to the invention it is provided that the sealing portion is formed as a flat surface and the sealing seat is formed as a conical annular surface, so that the sealing portion rests with closed valve means along a ring line on the sealing seat.
Adhäsionskräfte zwischen dem Dichtabschnitt des Ventilelements und dem Dichtsitz des Ventilkörpers können so weitestgehend vermieden werden und das Ventil öffnet verzögerungsfrei. Es kommt in diesem Zusammenhang nicht zu unerwünschten Geräuschen. Die erfindungsgemäßen Ventileinrichtungen und die erfindungsgemäßen Hochdruckpumpen arbeiten leiser und wirkungsvoller als herkömmliche Ventileinrichtungen und Hochdruckpumpen. Adhesive forces between the sealing portion of the valve element and the sealing seat of the valve body can be avoided as much as possible and the valve opens instantaneously. There is no unwanted noise in this context. The valve devices according to the invention and the high-pressure pumps according to the invention work quieter and more efficiently than conventional valve devices and high-pressure pumps.
Unter einem Anliegen entlang einer Ringlinie wird vorliegend ein Anliegen verstanden, zu dem es zwischen einer ebenen Fläche und einer Fläche mit der Form eines Ringkonus kommen kann. Kommt es in Folge des Anliegens zu einer elastischen - nicht aber plastischen - Verformung der ringkonischen Fläche und/oder der ebenen Fläche, wird das Anliegen insbesondere weiterhin als linienförmig aufgefasst, selbst wenn die Breite der Berühr-Linie hierdurch vorübergehend einen von Null verschiedenen Wert annimmt. In the present case, an object along a ring line is understood as a component which can come between a flat surface and a surface having the shape of a ring cone. If, as a result of the concern, an elastic - but not plastic - deformation of the annular conical surface and / or the flat surface is concerned, the abutment is still considered to be linear, even if the width of the contact line thereby temporarily assumes a value other than zero ,
In einer vorteilhaften Weiterbildung ist vorgesehen, dass der Dichtsitz und der Dichtabschnitt miteinander einen Winkel a einschließen, der größer ist als 0,05° und/oder der kleiner als 2° ist. Mit solch kleinen Winkeln resultieren bereits die oben erläuterten vorteilhaften Wirkungen; anderseits lassen sich solche In an advantageous development, it is provided that the sealing seat and the sealing portion enclose with one another an angle a which is greater than 0.05 ° and / or which is smaller than 2 °. With such small angles, the above-described advantageous effects already result; on the other hand, such can be
Ventileinrichtungen leicht und präzise fertigen, siehe unten. Easy and precise manufacture of valve equipment, see below.
Erfindungsgemäße Hochdruckpumpen weisen eine Ventileinrichtung der beschriebenen Art auf. Der Ventilkörper kann insbesondere unmittelbar oder mittelbar in das Gehäuse der Hochdruckpumpe eingepresst sein. High-pressure pumps according to the invention have a valve device of the type described. The valve body can in particular be pressed directly or indirectly into the housing of the high-pressure pump.
Die Erfindung umfasst auch ein Fertigungsverfahren zur Herstellung der The invention also includes a manufacturing method for producing the
Ventileinrichtung. Es sieht vor, dass der Ventilkörper zunächst eine plane Dichtsitzfläche aufweist, was sich mit geringem Aufwand und sehr hoher Präzision bewerkstelligen lässt. Es ist ferner vorgesehen, dass der Ventilkörper
in das Gehäuse eingepresst wird, wobei die vormals plane Dichtsitzfläche durch den von außen nach innen wirkenden Druck im Ventilkörper in eine konische Ringfläche übergeht. Es resultiert eine präzise und einfach zu fertigende Dichtsitzfläche mit der gewünschten Geometrie. Das geschilderte Valve device. It provides that the valve body initially has a flat sealing seat surface, which can be accomplished with little effort and very high precision. It is further contemplated that the valve body is pressed into the housing, wherein the formerly flat sealing seat surface passes through the acting from outside to inside pressure in the valve body into a conical annular surface. The result is a precise and easy to produce sealing seat surface with the desired geometry. The described
Fertigungsverfahren ist wesentlich einfacher als die Herstellung der gleichen Bauteilgeometrie mittels spanender Feinbearbeitung. Im Vergleich zu letzterer hat die erfiundungsgemäße Lösung überdies den Vorteil, dass eine sehr geringe Rauheit der Dichtflächen erreicht werden kann. Manufacturing process is much easier than the production of the same component geometry by means of machining fine machining. Compared to the latter, the solution according to the invention also has the advantage that a very low roughness of the sealing surfaces can be achieved.
Es ist insbesondere vorgesehen, dass das Einpressen des Ventilkörpers in das Gehäuse mit einem radialen Übermaß von nicht weniger als 0,32% erfolgt. In eine Ausnehmung des Gehäuses mit dem Durchmesser von beispielsweise 12,000 mm würde also ein Ventilkörper eingebracht, der (unverpresst und bei gleicher Temperatur) einen Durchmesser von nicht weniger als 12,038 mm aufweist. Durch dieses über das Vorbekannte hinausgehende Übermaß wird sichergestellt, dass die gewünschte Verformung des Ventilkörpers eintritt. It is particularly provided that the pressing of the valve body into the housing takes place with a radial excess of not less than 0.32%. In a recess of the housing with the diameter of, for example, 12,000 mm so a valve body would be introduced, which (unpressed and at the same temperature) has a diameter of not less than 12.038 mm. This excess, which exceeds the previously known, ensures that the desired deformation of the valve body occurs.
Es zeigen: Show it:
Figur 1 ein vereinfachtes Schema eines Kraftstoffsystems mit einer Figure 1 is a simplified schematic of a fuel system with a
Hochdruckpumpe und einer Ventileinrichtung; High pressure pump and a valve device;
Figur 2 eine vereinfachte Schnittdarstellung einer Ausführungsform der Figure 2 is a simplified sectional view of an embodiment of
Ventileinrichtung gemäß Figur 1 in geschlossenem Zustand; und Valve device according to Figure 1 in the closed state; and
Figur 3 eine Detailansicht des in der Figur 2 mit III bezeichneten Bereichs. FIG. 3 shows a detailed view of the area designated III in FIG.
Figur 1 zeigt ein Kraftstoffsystem 10 einer Brennkraftmaschine in einer stark vereinfachten Darstellung. Aus einem Kraftstofftank 12 wird Kraftstoff über eine Saugleitung 14, mittels einer Vorförderpumpe 16, über eine Niederdruckleitung 18, und über ein Einlassventil 20 einem Förderraum 23 einer Hochdruckpumpe 24 zugeführt. FIG. 1 shows a fuel system 10 of an internal combustion engine in a greatly simplified representation. Fuel is supplied from a fuel tank 12 via a suction line 14, by means of a prefeed pump 16, via a low-pressure line 18, and via an inlet valve 20 to a delivery chamber 23 of a high-pressure pump 24.
Das Einlassventil 20 ist beispielsweise ein Mengensteuerventil und von einem Elektromagneten betätigbar. Alternativ zu einem Elektromagneten kann auch beispielsweise ein Piezoaktor oder ein hydraulischer Aktor verwendet werden.
Die Hochdruckpumpe 24 weist ein Auslassventil auf, das in Form einer nachfolgend detaillierter beschriebenen Ventileinrichtung 22 ausgebildet ist. Die Ventileinrichtung 22 kommuniziert über eine Hochdruckleitung 26 mit einem Hochdruckspeicher 28. The intake valve 20 is, for example, a quantity control valve and actuated by an electromagnet. As an alternative to an electromagnet, a piezoactuator or a hydraulic actuator can also be used, for example. The high-pressure pump 24 has an outlet valve, which is designed in the form of a valve device 22 described in more detail below. The valve device 22 communicates via a high-pressure line 26 with a high-pressure accumulator 28.
Beim Betrieb des Kraftstoffsystems 10 fördert die Vorförderpumpe 16 Kraftstoff vom Kraftstofftank 12 in die Niederdruckleitung 18. Dabei bestimmt das During operation of the fuel system 10, the prefeed pump 16 delivers fuel from the fuel tank 12 into the low-pressure line 18
Einlassventil 20 die dem Förderraum 23 der Hochdruckpumpe 24 zugeführte Kraftstoffmenge. Inlet valve 20, the delivery chamber 23 of the high pressure pump 24 supplied amount of fuel.
Die Funktion der Ventileinrichtung 22 besteht darin, in einer Förderphase der Hochdruckpumpe 24 zu öffnen, um eine Fluidverbindung zwischen dem The function of the valve device 22 is to open in a delivery phase of the high-pressure pump 24 to a fluid connection between the
Förderraum 23 und dem Hochdruckspeicher 28 herzustellen, damit der Conveying chamber 23 and the high-pressure accumulator 28 produce, so that the
Hochdruckspeicher 28 mit druckbeaufschlagtem Fluid gefüllt werden kann. In einer Saugphase der Hochdruckpumpe 24 schließt die Ventileinrichtung 22, um einen unerwünschten Rückfluss von Fluid aus dem Hochdruckspeicher 28 in den Förderraum 23 zu verhindern. High-pressure accumulator 28 can be filled with pressurized fluid. In a suction phase of the high-pressure pump 24, the valve device 22 closes in order to prevent undesired reflux of fluid from the high-pressure accumulator 28 into the delivery chamber 23.
Die Figuren 2 und 3 zeigen eine Ausführungsform der Ventileinrichtung 22 und der Hochdruckpumpe 24 gemäß Figur 1 in einer vereinfachten FIGS. 2 and 3 show an embodiment of the valve device 22 and the high-pressure pump 24 according to FIG. 1 in a simplified form
Schnittdarstellung. Die in der Zeichnung dargestellten Elemente der Sectional view. The elements of the illustrated in the drawing
Ventileinrichtung 22 sind im Wesentlichen rotationssymmetrisch um eine Längsachse 29 ausgeführt und umfassen ein Gehäuse 30 der Hochdruckpumpe 24, einen in das Gehäuse 30 eingepressten Ventilkörper 60 mit einem Dichtsitz 32, an dem ein Dichtabschnitt 34 eines Ventilelements 36 bei geschlossener Ventileinrichtung 22 anliegt. Valve device 22 are substantially rotationally symmetrical about a longitudinal axis 29 and comprise a housing 30 of the high-pressure pump 24, a pressed into the housing 30 valve body 60 with a sealing seat 32, against which a sealing portion 34 of a valve element 36 with closed valve device 22.
Die Ventileinrichtung 22 weist stromaufwärts des Dichtsitzes 32 einen sich parallel zu der Längsachse 29 erstreckenden Strömungskanal 38 auf. The valve device 22 has, upstream of the sealing seat 32, a flow channel 38 extending parallel to the longitudinal axis 29.
Der Dichtabschnitt 34 ist als plane Fläche ausgebildet ist und der Dichtsitz 32 ist als konische Ringfläche ausgebildet, sodass der der Dichtabschnitt 34 bei geschlossener Ventileinrichtung 22 entlang einer Ringlinie 65 an dem Dichtsitz 32 anliegt. The sealing portion 34 is formed as a flat surface and the sealing seat 32 is formed as a conical annular surface, so that the sealing portion 34 rests with closed valve device 22 along a ring line 65 on the sealing seat 32.
Der Dichtsitz 32 und der Dichtabschnitt 34 schließen im Beispiel einen Winkel a
miteinander ein, der 1 ° beträgt. The sealing seat 32 and the sealing portion 34 close in the example an angle a with each other, which is 1 °.
Die in der Figur 2 gezeigte Ventileinrichtung 22 und die Hochdruckpumpe 24 sind hergestellt, indem der Ventilkörper 60 zunächst eine plane Dichtsitzfläche 32 aufweist, die nach dem Einpressen des Ventilkörpers 60 in das Gehäuse 30 derThe valve device 22 and the high-pressure pump 24 shown in FIG. 2 are produced in that the valve body 60 initially has a flat sealing seat surface 32, which after pressing the valve body 60 into the housing 30 of FIG
Hochdruckpumpe 28 in eine konische Ringfläche übergeht. Das Einpressen erfolgt in diesem Beispiel mit einem Übermaß von 0,32%. Sowohl das Gehäuse 30 als auch der Ventilkörper 60 bestehen im Beispiel aus rostfreiem Stahl.
High pressure pump 28 merges into a conical annular surface. The pressing is done in this example with an excess of 0.32%. Both the housing 30 and the valve body 60 are made of stainless steel in the example.
Claims
1 . Ventileinrichtung für eine Hochdruckpumpe (24), mit einem in einem 1 . Valve device for a high-pressure pump (24), with one in one
Gehäuse (30) eingepressten Ventilkörper (60), einem beweglichen Housing (30) pressed valve body (60), a movable
Ventilelement (36), das bei geschlossener Ventileinrichtung (22) mit einem Dichtabschnitt (34) an einem Dichtsitz (32) des Ventilkörpers (60) anliegt, dadurch gekennzeichnet, dass der Dichtabschnitt (34) als plane Fläche ausgebildet ist und der Dichtsitz (32) als konische Ringfläche ausgebildet ist, sodass der Dichtabschnitt (34) bei geschlossener Ventileinrichtung (22) entlang einer Ringlinie (65) an dem Dichtsitz (32) anliegt. Valve element (36) which bears against a sealing seat (32) of the valve body (60) when the valve device (22) is closed, characterized in that the sealing section (34) is designed as a planar surface and the sealing seat (32 ) is formed as a conical annular surface, so that the sealing portion (34) with closed valve device (22) along a ring line (65) against the sealing seat (32).
2. Ventileinrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der 2. Valve device according to claim 1, characterized in that the
Dichtsitz (32) und der Dichtabschnitt (34) miteinander einen Winkel (a) einschließen, der größer ist als 0,05° und/oder der kleiner als 2° ist. Seal seat (32) and the sealing portion (34) together include an angle (a) which is greater than 0.05 ° and / or is less than 2 °.
3. Hochdruckpumpe eines Kraftstoffsystems (10) einer Brennkraftmaschine, umfassend ein Auslassventil zum Auslassen von Kraftstoff aus einem Förderraum (23) der Hochdruckpumpe (24), dadurch gekennzeichnet, dass das Auslassventil eine Ventileinrichtung (22) nach wenigstens einem der voranstehenden Ansprüche ist. 3. High-pressure pump of a fuel system (10) of an internal combustion engine, comprising an outlet valve for discharging fuel from a delivery chamber (23) of the high-pressure pump (24), characterized in that the outlet valve is a valve device (22) according to at least one of the preceding claims.
4. Hochdruckpumpe nach Anspruch 3, dadurch gekennzeichnet, dass das Gehäuse (30) ein Gehäuse (30) der Hochdruckpumpe (24) ist. 4. High-pressure pump according to claim 3, characterized in that the housing (30) is a housing (30) of the high-pressure pump (24).
5. Verfahren zur Herstellung einer Ventileinrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Ventilkörper (60) zunächst eine plane Dichtsitzfläche (32) aufweist, die nach dem Einpressen des 5. A method for producing a valve device according to one of claims 1 or 2, characterized in that the valve body (60) initially has a flat sealing seat surface (32), which after the pressing of the
Ventilkörpers (60) in das Gehäuse (30) in eine konische Ringfläche übergeht
Valve body (60) in the housing (30) merges into a conical annular surface
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das Einpressen des Ventilkörpers in das Gehäuse mit einem radialen Übermaß von nicht weniger als 0,32% erfolgt. 6. The method according to claim 5, characterized in that the pressing of the valve body takes place in the housing with a radial excess of not less than 0.32%.
7. Verfahren zur Herstellung einer Hochdruckpumpe nach einem der 7. A method for producing a high-pressure pump according to one of
Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der Ventilkörper (60) zunächst eine plane Dichtsitzfläche (32‘) aufweist, die nach dem Einpressen des Ventilkörpers (60) in ein Gehäuse (30) der Hochdruckpumpe (28) in eine konische Ringfläche übergeht. Claims 3 or 4, characterized in that the valve body (60) initially has a flat sealing seat surface (32 '), which after pressing the valve body (60) into a housing (30) of the high-pressure pump (28) merges into a conical annular surface.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass das Einpressen des Ventilkörpers in das Gehäuse mit einem radialen Übermaß von nicht weniger als 0,32% erfolgt.
8. The method according to claim 7, characterized in that the pressing of the valve body takes place in the housing with a radial excess of not less than 0.32%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018206763.5 | 2018-05-02 | ||
| DE102018206763.5A DE102018206763A1 (en) | 2018-05-02 | 2018-05-02 | Valve device for a high-pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019211021A1 true WO2019211021A1 (en) | 2019-11-07 |
Family
ID=65529681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2019/054174 WO2019211021A1 (en) | 2018-05-02 | 2019-02-20 | Valve device for a high-pressure pump |
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| Country | Link |
|---|---|
| DE (1) | DE102018206763A1 (en) |
| WO (1) | WO2019211021A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006051570A1 (en) * | 2006-11-02 | 2008-05-08 | Schaeffler Kg | Inserted check valve, particularly for use in hydraulic or pneumatic system, has spring unit, which is supported opposite to closing body at stepless form-fit holding element inserted in housing for adjusting closing pressure |
| DE102011005487A1 (en) * | 2011-03-14 | 2012-09-20 | Robert Bosch Gmbh | Valve device, in particular outlet valve of a high-pressure fuel pump of an internal combustion engine |
| EP2183476B1 (en) * | 2007-07-30 | 2013-03-27 | Robert Bosch GmbH | Fuel injection valve with improved tightness on the sealing seat of a pressure-compensated control valve |
| DE102013204563A1 (en) * | 2013-03-15 | 2014-09-18 | Robert Bosch Gmbh | High-pressure fuel pump with an outlet valve arranged between a delivery chamber and an outlet |
-
2018
- 2018-05-02 DE DE102018206763.5A patent/DE102018206763A1/en not_active Withdrawn
-
2019
- 2019-02-20 WO PCT/EP2019/054174 patent/WO2019211021A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006051570A1 (en) * | 2006-11-02 | 2008-05-08 | Schaeffler Kg | Inserted check valve, particularly for use in hydraulic or pneumatic system, has spring unit, which is supported opposite to closing body at stepless form-fit holding element inserted in housing for adjusting closing pressure |
| EP2183476B1 (en) * | 2007-07-30 | 2013-03-27 | Robert Bosch GmbH | Fuel injection valve with improved tightness on the sealing seat of a pressure-compensated control valve |
| DE102011005487A1 (en) * | 2011-03-14 | 2012-09-20 | Robert Bosch Gmbh | Valve device, in particular outlet valve of a high-pressure fuel pump of an internal combustion engine |
| DE102013204563A1 (en) * | 2013-03-15 | 2014-09-18 | Robert Bosch Gmbh | High-pressure fuel pump with an outlet valve arranged between a delivery chamber and an outlet |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018206763A1 (en) | 2019-11-07 |
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