EP2954190B1 - Component having high-pressure bores that lead into one another - Google Patents

Component having high-pressure bores that lead into one another Download PDF

Info

Publication number
EP2954190B1
EP2954190B1 EP14701997.0A EP14701997A EP2954190B1 EP 2954190 B1 EP2954190 B1 EP 2954190B1 EP 14701997 A EP14701997 A EP 14701997A EP 2954190 B1 EP2954190 B1 EP 2954190B1
Authority
EP
European Patent Office
Prior art keywords
bore
duct
central bore
section
component according
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.)
Active
Application number
EP14701997.0A
Other languages
German (de)
French (fr)
Other versions
EP2954190A1 (en
Inventor
Christian Graspeuntner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2954190A1 publication Critical patent/EP2954190A1/en
Application granted granted Critical
Publication of EP2954190B1 publication Critical patent/EP2954190B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M59/44—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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/008—Arrangement of fuel passages inside of injectors
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • 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
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
    • 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
    • F02M2200/8069—Fuel injection apparatus manufacture, repair or assembly involving removal of material from the fuel apparatus, e.g. by punching, hydro-erosion or mechanical operation
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to a component according to the preamble of claim 1.
  • Such a component is known, for example, as the housing of a piston pump of a fuel system. With it, the fuel is compressed to a very high pressure and pressed into a fuel high-pressure accumulator, in particular in a fuel rail ("rail") or in integrated memory of storage injectors. There the fuel is stored under very high pressure. To the fuel manifold, a plurality of injection valves are connected, which inject the fuel directly into respective, the injection valves associated combustion chambers.
  • the invention is therefore based on the object to reduce the cost of the intersection on the first channel without losing the existing voltage levels in terms of advantages.
  • the invention essentially provides for a component of the type mentioned that the central bore passed through the component is and consists of a first, extending over the intersection portion and an adjoining second portion, and that the at least one sub-bore extends only along the first portion and along the second portion no secondary bore is provided.
  • the fact that the central bore is drilled, the number of holes to be made is reduced.
  • the first portion and the second portion of the central bore, which are aligned with each other, are thus formed in a single operation.
  • the cross-sectional enlargement of the first channel is realized in the region of the intersection, ie in the region of the junction of the at least one second channel, by forming at least one secondary bore along the first portion of the central bore, wherein the secondary bore does not extend through the component but instead is designed as a blind hole.
  • a particularly low-tension training succeeds according to a preferred embodiment, when both sides of the central bore each having a cross section of the central bore enlarging secondary bore is formed.
  • the longitudinal axes of the central bore and the two side bores are in this case in a common plane.
  • the at least one secondary bore may have the same bore diameter as the central bore. Alternatively, it is also conceivable that the at least one secondary bore has a smaller bore diameter than the central bore.
  • the provision of secondary bores preferably leads to the cross-sectional area of the first channel being greater than the cross-sectional area of the second channel.
  • the cross-sectional area of the second channel may substantially correspond to the cross-sectional area of the central bore of the first channel.
  • the bore end the at least one secondary bore is formed spherically or with a drilling cone of for example 120 ° - 150 °, in particular 140 °.
  • the central bore at the end of the second section has a high pressure port with an outwardly diverging tapered sealing surface.
  • the first channel is a header bore of a high-pressure piston pump, in particular a radial piston pump of a fuel injection system of an internal combustion engine.
  • FIG. 1 a training of a so-called.
  • Fig. 2 an inventive training in a first sectional view
  • Fig. 3 the training according to Fig. 2 in a sectional view taken along the line III-III of Fig. 2 ,
  • a prior art high pressure medium leading component 1 is shown, eg, a high pressure fuel pump housing of a fuel injection system of an internal combustion engine.
  • the component 1 has a high-pressure connection 2, which has a conical sealing surface 3, which can interact with a corresponding mating surface of the connection pipe.
  • the high pressure port 2 leads to a first channel 4, which is designed as a bore in the housing 1.
  • a second channel 5 which is also designed as a bore.
  • the first channel 4 is formed by a central bore and two side bores which increase the cross-section of the central bore on both sides of the central bore.
  • a section 6 which extends from the high-pressure port 2 to the axis of the second channel 5
  • the axes of the secondary bores extend at an acute angle to the axis of the central bore, resulting in a fan-like arrangement.
  • a section 7 which adjoins directly to the section 6, the axes of the side bores are parallel to the axis of the central bore.
  • the holes of the first section 6 and the Holes of the second portion 7 are drilled from opposite sides of the component 1. In the training according to Fig. 1 Thus, a total of six holes are required. This training is therefore costly and sensitive to manufacturing tolerances.
  • the first channel 4 has a first section 8 and a second section 9, which adjoin one another directly.
  • the first section 8 extends over the intersection of the second channel 5 with the first channel 4, so that the intersection lies completely in the first section 8.
  • the first channel 4 is formed only by the central bore 10
  • the first channel 4 is formed in the first section 8 through the central bore 10 and the side bores 11, as shown in particular in the cross-sectional view Fig. 3 is apparent.
  • the sub-holes 11 can be machined at their end 12 by means of a ball head to obtain a corresponding curved end surface.

Description

Die Erfindung betrifft ein Bauelement gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a component according to the preamble of claim 1.

Ein derartiges Bauelement ist beispielsweise als Gehäuse einer Kolbenpumpe eines Kraftstoffsystems bekannt. Mit ihr wird der Kraftstoff auf einen sehr hohen Druck verdichtet und in einen Kraftstoff-Hochdruckspeicher, insbesondere in eine Kraftstoff-Sammelleitung ("Rail") oder in integrierte Speicher von Speicherinjektoren gepresst. Dort ist der Kraftstoff unter sehr hohem Druck gespeichert. An die Kraftstoff-Sammelleitung sind mehrere Einspritzventile angeschlossen, welche den Kraftstoff direkt in jeweilige, den Einspritzventilen zugeordnete Brennräume einspritzen.Such a component is known, for example, as the housing of a piston pump of a fuel system. With it, the fuel is compressed to a very high pressure and pressed into a fuel high-pressure accumulator, in particular in a fuel rail ("rail") or in integrated memory of storage injectors. There the fuel is stored under very high pressure. To the fuel manifold, a plurality of injection valves are connected, which inject the fuel directly into respective, the injection valves associated combustion chambers.

Bei den bekannten Bauelementen dieser Art (siehe z.B. DE 10 2008 040383 A1 ) wird der Kraftstoff in Förderräumen, welche in dem Gehäuse vorhanden sind, von entsprechenden Kolben verdichtet. Über Strömungskanäle, welche in Form von Bohrungen in das Gehäuse oder in Gehäuseteile der Hochdruck-Kraftstoffpumpe eingebracht sind, gelangt der hochverdichtete Kraftstoff von den einzelnen Förderräumen zu einem gemeinsamen Auslass, dem sogenannten Pumpensammler. Aus jedem Förderraum mündet ein Strömungskanal bzw. eine Bohrung in den Pumpensammler, wobei die Strömungskanäle in einem Winkel >0° zum Pumpensammler stehen. Am Schnittbereich der Strömungskanäle mit dem Pumpensammler wird jeweils eine Bohrungsverschneidung ausgebildet.In the known components of this type (see, eg DE 10 2008 040383 A1 ), the fuel in delivery chambers, which are present in the housing, compressed by corresponding piston. About flow channels, which are introduced in the form of holes in the housing or housing parts of the high-pressure fuel pump, the highly compressed fuel from the individual delivery chambers to a common outlet, the so-called pump collector. From each delivery chamber, a flow channel or a hole opens into the pump collector, wherein the flow channels at an angle> 0 ° to the pump collector stand. At the intersection of the flow channels with the pump collector a bore intersection is formed in each case.

Auf Grund des in den hochdruckführenden Bauteilen von Kraftstoffeinspritzsystemen herrschenden Drucks von bis zu 2200 bar entstehen Spannungen in den die Medien führenden Rohren oder Kanälen. Bei Rohren treten dabei axiale Spannungen, radiale Spannungen und Spannungen in Umfangsrichtung auf, von denen die Spannungen in Umfangsrichtung den größten Anteil an der Rohrbelastung haben. An Bohrungsverschneidungen entstehen insbesondere bei spitzen Winkeln durch die Überlagerung der Spannungen aus beiden oder mehreren Bohrungen besonders hohe Spannungen in Form von Zugspannungen im Material. Das Spannungsmaximum wird direkt an der Verschneidungskante erreicht. Diese Stellen sind besonders bei nicht konstanten Drücken, also bei schwellender Belastung, stark bruchgefährdet. Es ist deshalb in erster Linie erforderlich, die Umfangsspannungen zu reduzieren.Due to the pressure of up to 2,200 bar prevailing in the high-pressure components of fuel injection systems, stresses develop in the pipes or ducts carrying the media. In the case of pipes, axial stresses, radial stresses and stresses occur in the circumferential direction, of which the stresses in the circumferential direction have the largest share of the pipe load. At bore intersections particularly at acute angles caused by the superposition of the voltages from two or more holes particularly high voltages in the form of tensile stresses in the material. The maximum stress is reached directly at the intersection edge. These points are particularly at non-constant pressures, so with swelling load, high risk of breakage. It is therefore necessary first of all to reduce the hoop stresses.

In diesem Zusammenhang ist bereits vorgeschlagen worden, den Querschnitt des ersten Kanals zumindest im Bereich der Einmündung des zweiten Kanals zu vergrößern, indem ausgehend von einer Zentralbohrung wenigstens eine, insbesondere zwei den Querschnitt der Zentralbohrung vergrößernde Nebenbohrungen eingebracht werden. Wenn die Längsachsen der Nebenbohrungen und der Zentralbohrung jeweils einen spitzen Winkel miteinander einschließen, spricht man auch von einer "Fächerverschneidung" oder einer "Fernrohrverschneidung". Die Längsachsen der Zentralbohrung und der Nebenbohrungen konvergieren hierbei in Richtung zu einem Hochdruckanschluss des ersten Kanals. Nachteilig bei dieser Ausbildung ist der Umstand, dass die Zentralbohrung und die Nebenbohrungen jeweils von beiden Seiten des Bauteils gebohrt werden müssen, was zu einer hohen Empfindlichkeit gegenüber Fertigungstoleranzen und zu hohen Kosten führt.In this connection, it has already been proposed to increase the cross-section of the first channel at least in the region of the junction of the second channel by starting at least one, in particular two, the cross-section of the central bore enlarging secondary bores are introduced from a central bore. If the longitudinal axes of the sub-holes and the central hole each include an acute angle with each other, one speaks of a "Fächerverschneidung" or a "telescope intersection". The longitudinal axes of the central bore and the sub-bores converge toward a high-pressure port of the first channel. A disadvantage of this design is the fact that the central bore and the secondary bores must be drilled from both sides of the component, which leads to a high sensitivity to manufacturing tolerances and high costs.

Der Erfindung liegt somit die Aufgabe zugrunde, den Aufwand für die Verschneidung am ersten Kanal zu verringern ohne die hinsichtlich des Spannungsniveaus bestehenden Vorteile zu verlieren.The invention is therefore based on the object to reduce the cost of the intersection on the first channel without losing the existing voltage levels in terms of advantages.

Zur Lösung dieser Aufgabe sieht die Erfindung bei einem Bauteil der eingangs genannten Art im Wesentlichen vor, dass die Zentralbohrung durch das Bauelement hindurchgeführt ist und aus einem ersten, sich über die Verschneidung erstreckenden Abschnitt und einem daran anschließenden zweiten Abschnitt besteht, und dass die wenigstens eine Nebenbohrung sich lediglich entlang des ersten Abschnittes erstreckt und entlang des zweiten Abschnitts keine Nebenbohrung vorgesehen ist. Dadurch, dass die Zentralbohrung durchgebohrt ist, wird die Anzahl der vorzunehmenden Bohrungen verringert. Der erste Abschnitt und der zweite Abschnitt der Zentralbohrung, die miteinander fluchten, werden somit in einem einzigen Arbeitsschritt ausgebildet. Die Querschnittsvergrößerung des ersten Kanals wird im Bereich der Verschneidung, d.h. im Bereich der Einmündung des wenigstens einen zweiten Kanals, dadurch realisiert, dass entlang des ersten Abschnitts der Zentralbohrung wenigsten eine Nebenbohrung ausgebildet wird, wobei die Nebenbohrung sich nicht durch das Bauteil hindurch erstreckt, sondern als Sackloch ausgebildet ist. Bei der erfindungsgemäßen Ausbildung reicht es somit aus, die wenigstens eine Nebenbohrung nur von einer Seite des Bauteils her zu bohren, sodass die Anzahl der vorzunehmenden Bohrungen insgesamt erheblich reduziert werden kann.To solve this problem, the invention essentially provides for a component of the type mentioned that the central bore passed through the component is and consists of a first, extending over the intersection portion and an adjoining second portion, and that the at least one sub-bore extends only along the first portion and along the second portion no secondary bore is provided. The fact that the central bore is drilled, the number of holes to be made is reduced. The first portion and the second portion of the central bore, which are aligned with each other, are thus formed in a single operation. The cross-sectional enlargement of the first channel is realized in the region of the intersection, ie in the region of the junction of the at least one second channel, by forming at least one secondary bore along the first portion of the central bore, wherein the secondary bore does not extend through the component but instead is designed as a blind hole. In the embodiment according to the invention, it is therefore sufficient to drill the at least one secondary bore only from one side of the component, so that the total number of holes to be made can be considerably reduced overall.

Eine besonders spannungsarme Ausbildung gelingt gemäß einer bevorzugten Weiterbildung, wenn beiderseits der Zentralbohrung jeweils eine den Querschnitt der Zentralbohrung vergrößernde Nebenbohrung ausgebildet ist. Bevorzugt liegen die Längsachsen der Zentralbohrung und der zwei Nebenbohrungen hierbei in einer gemeinsamen Ebene.A particularly low-tension training succeeds according to a preferred embodiment, when both sides of the central bore each having a cross section of the central bore enlarging secondary bore is formed. Preferably, the longitudinal axes of the central bore and the two side bores are in this case in a common plane.

Die wenigstens eine Nebenbohrung kann den gleichen Bohrungsdurchmesser aufweisen wie die Zentralbohrung. Alternativ ist es aber auch denkbar, dass die wenigstens eine Nebenbohrung einen kleineren Bohrungsdurchmesser aufweist als die Zentralbohrung.The at least one secondary bore may have the same bore diameter as the central bore. Alternatively, it is also conceivable that the at least one secondary bore has a smaller bore diameter than the central bore.

Das Vorsehen von Nebenbohrungen führt jedenfalls bevorzugt dazu, dass die Querschnittsfläche des ersten Kanals größer ist als die Querschnittsfläche des zweiten Kanals. Insbesondere kann die Querschnittsfläche des zweiten Kanals im Wesentlichen der Querschnittsfläche der Zentralbohrung des ersten Kanals entsprechen.In any case, the provision of secondary bores preferably leads to the cross-sectional area of the first channel being greater than the cross-sectional area of the second channel. In particular, the cross-sectional area of the second channel may substantially correspond to the cross-sectional area of the central bore of the first channel.

Um die Spannungsspitzen an der Verschneidung des Nebenbohrungsendes mit der Zentralbohrung zu verringern, sieht eine bevorzugte Weiterbildung vor, dass das Bohrungsende der wenigstens einen Nebenbohrung sphärisch oder mit einem Bohrkegel von z.B. 120° - 150°, insbesondere 140° ausgebildet ist.In order to reduce the voltage peaks at the intersection of the secondary bore end with the central bore, a preferred development provides that the bore end the at least one secondary bore is formed spherically or with a drilling cone of for example 120 ° - 150 °, in particular 140 °.

Um den Anschluss von Hochdruckmedium führenden Leitungen in einfacher Weise zu ermöglichen, kann weiters vorgesehen sein, dass die Zentralbohrung am Ende des zweiten Abschnittes einen Hochdruckanschluss mit einer nach außen hin divergierenden kegeligen Dichtfläche aufweist.In order to enable the connection of high-pressure medium-carrying lines in a simple manner, can further be provided that the central bore at the end of the second section has a high pressure port with an outwardly diverging tapered sealing surface.

Eine bevorzugte Anwendung der vorliegenden Erfindung liegt darin, dass der erste Kanal eine Sammlerbohrung einer Hochdruckkolbenpumpe, insbesondere Radialkolbenpumpe eines Kraftstoffeinspritzsystems einer Verbrennungskraftmaschine ist.A preferred application of the present invention is that the first channel is a header bore of a high-pressure piston pump, in particular a radial piston pump of a fuel injection system of an internal combustion engine.

Die Erfindung wird nachfolgend anhand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen näher erläutert. In dieser zeigen Fig. 1 eine Ausbildung einer sog. Fächerverschneidung gemäß dem Stand der Technik, Fig. 2 eine erfindungsgemäße Ausbildung in einer ersten Schnittansicht und Fig. 3 die Ausbildung gemäß Fig. 2 in einer Schnittansicht entlang der Linie III-III der Fig. 2.The invention will be explained in more detail with reference to embodiments shown schematically in the drawing. In this show Fig. 1 a training of a so-called. Fächerverschneidung according to the prior art, Fig. 2 an inventive training in a first sectional view and Fig. 3 the training according to Fig. 2 in a sectional view taken along the line III-III of Fig. 2 ,

In Fig. 1 wird ein Hochdruckmedium führendes Bauteil 1 nach dem Stand der Technik gezeigt, z.B. ein Gehäuse einer Hochdruck- Kraftstoffpumpe eines Kraftstoffeinspritzsystems einer Verbrennungskraftmaschine. Das Bauteil 1 weist einen Hochdruckanschluss 2 auf, der eine kegelige Dichtfläche 3 aufweist, die mit einer entsprechenden Gegenfläche des Anschlussrohrs zusammenwirken kann. Der Hochdruckanschluss 2 führt zu einem ersten Kanal 4, der als Bohrung im Gehäuse 1 ausgeführt ist. In den ersten Kanal 4 mündet rechtwinkelig ein zweiter Kanal 5 ein, der ebenfalls als Bohrung ausgeführt ist. Um im Bereich der Verschneidung zwischen dem ersten Kanal 4 und dem zweiten Kanal 5 eine Querschnittsvergrößerung zu erreichen, ist der erste Kanal 4 von einer Zentralbohrung und zwei beiderseits der Zentralbohrung angeordneten, den Querschnitt der Zentralbohrung vergrößernden Nebenbohrungen gebildet. In einem Abschnitt 6, der sich vom Hochdruckanschluss 2 zur Achse des zweiten Kanals 5 erstreckt, verlaufen die Achsen der Nebenbohrungen in einem spitzen Winkel zur Achse der Zentralbohrung, sodass sich eine fächerartige Anordnung ergibt. In einem Abschnitt 7, der unmittelbar an den Abschnitt 6 anschließt, verlaufen die Achsen der Nebenbohrungen parallel zur Achse der Zentralbohrung. Die Bohrungen des ersten Abschnitts 6 und die Bohrungen des zweiten Abschnitts 7 werden von gegenüberliegenden Seiten des Bauteils 1 aus gebohrt. Bei der Ausbildung gemäß Fig. 1 sind somit insgesamt sechs Bohrungen erforderlich. Diese Ausbildung ist daher kostenintensiv und empfindlich auf Fertigungstoleranzen.In Fig. 1 For example, a prior art high pressure medium leading component 1 is shown, eg, a high pressure fuel pump housing of a fuel injection system of an internal combustion engine. The component 1 has a high-pressure connection 2, which has a conical sealing surface 3, which can interact with a corresponding mating surface of the connection pipe. The high pressure port 2 leads to a first channel 4, which is designed as a bore in the housing 1. In the first channel 4 opens a right angle a second channel 5, which is also designed as a bore. In order to achieve a cross-sectional enlargement in the region of the intersection between the first channel 4 and the second channel 5, the first channel 4 is formed by a central bore and two side bores which increase the cross-section of the central bore on both sides of the central bore. In a section 6 which extends from the high-pressure port 2 to the axis of the second channel 5, the axes of the secondary bores extend at an acute angle to the axis of the central bore, resulting in a fan-like arrangement. In a section 7, which adjoins directly to the section 6, the axes of the side bores are parallel to the axis of the central bore. The holes of the first section 6 and the Holes of the second portion 7 are drilled from opposite sides of the component 1. In the training according to Fig. 1 Thus, a total of six holes are required. This training is therefore costly and sensitive to manufacturing tolerances.

Bei der erfindungsgemäßen Ausbildung gemäß Fig. 2 hingegen sind nur drei Bohrungen erforderlich, ohne dass das Spannungsniveau im Bereich der Verschneidung negativ beeinflusst wird. Der erste Kanal 4 weist einen ersten Abschnitt 8 und einen zweiten Abschnitt 9 auf, die unmittelbar aneinander anschließen. Der erste Abschnitt 8 erstreckt sich hierbei über die Verschneidung des zweiten Kanals 5 mit dem ersten Kanal 4, sodass die Verschneidung vollständig im ersten Abschnitt 8 liegt. Im zweiten Abschnitt 9 wird der erste Kanal 4 lediglich durch die Zentralbohrung 10 gebildet, wohingegen der erste Kanal 4 im ersten Abschnitt 8 durch die Zentralbohrung 10 und die Nebenbohrungen 11 gebildet wird, wie dies insbesondere in der Querschnittsansicht gemäß Fig. 3 ersichtlich ist. Die Nebenbohrungen 11 können an ihrem Ende 12 mit Hilfe eines Kugelkopfes bearbeitet werden, um eine entsprechende gekrümmte Endfläche zu erhalten.In the embodiment according to the invention Fig. 2 however, only three holes are required without affecting the voltage level in the area of the intersection. The first channel 4 has a first section 8 and a second section 9, which adjoin one another directly. In this case, the first section 8 extends over the intersection of the second channel 5 with the first channel 4, so that the intersection lies completely in the first section 8. In the second section 9, the first channel 4 is formed only by the central bore 10, whereas the first channel 4 is formed in the first section 8 through the central bore 10 and the side bores 11, as shown in particular in the cross-sectional view Fig. 3 is apparent. The sub-holes 11 can be machined at their end 12 by means of a ball head to obtain a corresponding curved end surface.

Claims (10)

  1. Component (1), in particular housing of a high pressure fuel pump, in which there are a first high pressure duct (4) and at least one second high pressure duct (5), the longitudinal axis of the first duct lying at an acute or right angle with respect to the longitudinal axis of the second duct, and the second duct opening into the first duct, with the result that an intersection is formed, the first duct being formed by a central bore (10) and at least one auxiliary bore (11) which enlarges the cross section of the central bore, the central bore (10) consisting of a first section (8) which extends over the intersection and a second section (9) which adjoins it, and the at least one auxiliary bore (11) extending merely along the first section (8) and no auxiliary bore being provided along the second section (9), characterized in that the longitudinal axis of the auxiliary bore (11) and the longitudinal axis of the central bore (10) run parallel to one another, and in that the central bore (10) is guided through the component (1).
  2. Component according to Claim 1, characterized in that in each case one auxiliary bore (11) which enlarges the cross section of the central bore (10) is configured on both sides of the central bore (10).
  3. Component according to Claim 2, characterized in that the longitudinal axes of the central bore (10) and of the two auxiliary bores (11) lie in a common plane.
  4. Component according to Claim 1, 2 or 3, characterized in that the at least one auxiliary bore (11) has the same bore diameter as the central bore (10).
  5. Component according to Claim 1, 2 or 3, characterized in that the at least one auxiliary bore (11) has a smaller bore diameter than the central bore (10).
  6. Component according to one of Claims 1 to 5, characterized in that the cross-sectional area of the first section of the first duct (4) is greater than the cross-sectional area of the second duct (5).
  7. Component according to one of Claims 1 to 6, characterized in that the cross-sectional area of the second duct (5) corresponds substantially to the cross-sectional area of the central bore (10) of the first duct (4).
  8. Component according to one of Claims 1 to 7, characterized in that the bore end (12) of the at least one auxiliary bore (11) is configured so as to be spherical or with a bore taper of, for example, 140°.
  9. Component according to one of Claims 1 to 8, characterized in that, at the end of the second section (9), the central bore (10) has a high pressure connector (2) with a conical sealing face (3) which diverges towards the outside.
  10. Component according to one of Claims 1 to 9, characterized in that the first duct (4) is a collector bore of a high pressure piston pump, in particular an in-line piston pump or radial piston pump of a fuel injection system of an internal combustion engine.
EP14701997.0A 2013-02-05 2014-01-29 Component having high-pressure bores that lead into one another Active EP2954190B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA88/2013A AT512893B1 (en) 2013-02-05 2013-02-05 Component with intermeshing high pressure holes
PCT/EP2014/051675 WO2014122052A1 (en) 2013-02-05 2014-01-29 Component having high-pressure bores that lead into one another

Publications (2)

Publication Number Publication Date
EP2954190A1 EP2954190A1 (en) 2015-12-16
EP2954190B1 true EP2954190B1 (en) 2016-12-14

Family

ID=49919835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14701997.0A Active EP2954190B1 (en) 2013-02-05 2014-01-29 Component having high-pressure bores that lead into one another

Country Status (7)

Country Link
US (1) US9677521B2 (en)
EP (1) EP2954190B1 (en)
JP (1) JP6069525B2 (en)
KR (1) KR102062613B1 (en)
CN (1) CN104981604B (en)
AT (1) AT512893B1 (en)
WO (1) WO2014122052A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201516152D0 (en) * 2015-09-11 2015-10-28 Delphi Int Operations Lux Srl Fuel pump housing
DE102016211228A1 (en) * 2016-06-23 2017-12-28 Robert Bosch Gmbh High pressure fuel pump with a housing and method for processing channels of a housing of a high pressure fuel pump

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768840A (en) * 1946-07-01 1956-10-30 Kobe Inc Tubing system for fluid operated pumps
GB8914478D0 (en) 1989-06-23 1989-08-09 Lucas Ind Plc Fuel injection nozzle
EP0982493B1 (en) 1998-08-27 2003-09-24 Wärtsilä Schweiz AG Method of making a fuel injection nozzle and fuel injection nozzle
DE19925380A1 (en) 1999-06-02 2000-12-07 Volkswagen Ag Fuel injection valve for internal combustion engines
DE10152230A1 (en) * 2001-10-20 2003-04-30 Bosch Gmbh Robert High pressure resistant injector body
JP4119812B2 (en) * 2003-09-19 2008-07-16 ボッシュ株式会社 Fuel injection valve
DE102004018937A1 (en) 2004-04-20 2005-11-17 Robert Bosch Gmbh Fuel injection valve e.g. for direct injecting of fuel into combustion chamber of internal combustion engine, has body with valve seat surface cooperating to sealing seat with opening and lateral end of valve has protective layer
GB0602742D0 (en) * 2005-06-06 2006-03-22 Delphi Tech Inc Machining method
EP1927751B1 (en) * 2006-11-27 2009-02-11 Delphi Technologies, Inc. Housing with intersecting passages
JP4404124B2 (en) * 2007-09-11 2010-01-27 株式会社デンソー pump
WO2009111896A2 (en) * 2008-03-13 2009-09-17 Ganser-Hydromag Ag High-pressure delivery pump having a cylinder head, particularly for injection systems for internal combustion engines
DE102008040383A1 (en) * 2008-07-14 2010-01-21 Robert Bosch Gmbh High pressure resistant fuel injector
EP2320084B1 (en) * 2009-11-06 2012-09-12 Delphi Technologies Holding S.à.r.l. Housing with intersecting passages for high pressure fluid applications
AT509177B1 (en) * 2009-11-23 2013-09-15 Bosch Gmbh Robert PRESSURE TUBE FITTINGS FOR COMMON RAIL INJECTION SYSTEM
DE102010028046A1 (en) * 2010-04-21 2011-10-27 Robert Bosch Gmbh high pressure pump
ES2848158T3 (en) * 2011-02-23 2021-08-05 Carrier Corp Ejector and method of operating a system with such an ejector

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
CN104981604A (en) 2015-10-14
JP2016505118A (en) 2016-02-18
CN104981604B (en) 2018-04-24
EP2954190A1 (en) 2015-12-16
US20150369191A1 (en) 2015-12-24
KR20150112993A (en) 2015-10-07
AT512893A4 (en) 2013-12-15
WO2014122052A1 (en) 2014-08-14
KR102062613B1 (en) 2020-01-06
AT512893B1 (en) 2013-12-15
JP6069525B2 (en) 2017-02-01
US9677521B2 (en) 2017-06-13

Similar Documents

Publication Publication Date Title
WO2018050881A1 (en) Check valve, high-pressure component and high-pressure fuel pump
EP2954190B1 (en) Component having high-pressure bores that lead into one another
EP3322903A1 (en) Double-acting hydraulic cylinder
DE4437927C2 (en) Solenoid valve-controlled fuel injection device with an injection nozzle for fuel injection into the combustion chamber of a diesel internal combustion engine
DE10247958A1 (en) Fuel injection device for an internal combustion engine
EP4310399A1 (en) Nozzle device for adding fuel to a combustor of a gas turbine assembly and gas turbine assembly
EP3571387B1 (en) High-pressure accumulator of a high-pressure fuel injection system
WO2020020961A1 (en) Connection piece for a fuel injector in an internal combustion engine
EP1117923A1 (en) High-pressure fuel accumulator
DE10261737A1 (en) Component subject to internal pressure, in particular for fuel injection for internal combustion engines with a high-pressure fuel pump
DE10307529A1 (en) Fuel filter for a motor vehicle's fuel injection system has a rod-shaped filter body guided on its ends in a supply channel
DE102011101770A1 (en) Assembly has solid body and intersection of high-pressure fluid channel with another high-pressure fluid channel is formed in solid body
WO2007073984A1 (en) Component for use in fuel injection systems
EP1260704B1 (en) Accumulator fuel injection system with high pressure components having an increased mechanical strength
DE10022378A1 (en) Motor fuel injector body has an inflow channel from the common rail which opens into the ring zone through a recess in the zone wall for increased pressure resistance
EP1153216B1 (en) Connector and housing for a fuel injection system
DE102012220610A1 (en) injector
DE102016201600B4 (en) High-pressure fuel pump and fuel injection system
DE10128715B4 (en) High-pressure fuel line
DE102006036103A1 (en) Tube arrangement for fuel injection system of internal-combustion engine in motor vehicle, has fluid channel in slot wall section flowing in slot of another fluid channel so that axial direction is inclined around angle of inclination
DE102007047518B4 (en) An inlet connector
DE10218025B4 (en) Throttling device, in particular for a high-pressure force injection device for an internal combustion engine
DE10029425B4 (en) Bore arrangement with an intersection formed from at least three bores and method for the production thereof
DE102021202697A1 (en) High-pressure accumulator line for a fuel injection system, fuel injection system and use of a throttle element in a high-pressure accumulator line
DE102019105537A1 (en) Sleeve for passing water around an injector into a combustion chamber

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150907

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160920

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 853822

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502014002201

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170314

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170315

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170414

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170414

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170314

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502014002201

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170214

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

26N No opposition filed

Effective date: 20170915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170129

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170129

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 853822

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161214

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20230130

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230131

Year of fee payment: 10

Ref country code: DE

Payment date: 20230324

Year of fee payment: 10

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230509