EP1284359A1 - High pressure fuel accumulator - Google Patents
High pressure fuel accumulator Download PDFInfo
- Publication number
- EP1284359A1 EP1284359A1 EP02016076A EP02016076A EP1284359A1 EP 1284359 A1 EP1284359 A1 EP 1284359A1 EP 02016076 A EP02016076 A EP 02016076A EP 02016076 A EP02016076 A EP 02016076A EP 1284359 A1 EP1284359 A1 EP 1284359A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure fuel
- base body
- fuel accumulator
- interior
- accumulator 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims description 46
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
Definitions
- An injection system is used to supply an internal combustion engine with fuel.
- memory injection system at the common rail system called memory injection system are pressure generation and Injection decoupled from one another in time and place.
- a separate high pressure pump generates the injection pressure in a central high-pressure fuel reservoir. The start of injection and the injection quantity are controlled by the timing and duration of electrical actuated injectors determined via fuel lines to the high-pressure fuel reservoir are connected.
- DE-A 199 36 533 relates to a high-pressure fuel accumulator for a common rail fuel injection system an internal combustion engine with a tubular base body, which has a blind bore running in the longitudinal direction and a plurality of connections.
- DE-A 199 49 962 describes a high-pressure fuel accumulator for a common rail fuel injection system an internal combustion engine known.
- the high-pressure fuel accumulator has a hollow body, which is equipped with several connection openings is.
- the interior of the base body is flat in the area of the connection openings educated.
- the high-pressure strength of the high-pressure fuel reservoir is mainly due to the Intersections between the connection openings and the base body limited. These intersections are heavily loaded by the internal pressure and pose possible failure points of the high-pressure fuel accumulator. In operation occur there Stress peaks, through which cracks can form in the base body.
- An advantage of the present invention is that the compressive strength of a high-pressure fuel accumulator is increased. It results from the greater resilience of the intersections between the longitudinal bore in the base body of the high-pressure fuel accumulator and the cross holes in its connecting piece.
- a high-pressure power storage for Common rail fuel injection system for internal combustion engines achieved one Includes base body made of a base material with at least one connecting piece.
- the base body contains a longitudinal bore forming an interior and the at least one a connecting piece at least one transverse bore opening into the longitudinal bore.
- the interior of the base body contains in the area of the at least one transverse bore a high-strength additional material.
- an inexpensive base material for the rest of the base body low-strength material can be selected, preferably steel.
- it contains high strength Additional material at least one material from the group of iron materials, ceramic materials and the composite materials.
- Figure 1 shows the cross section through a high-pressure fuel reservoir according to the invention with an inlet part made of a high-strength additional material.
- the high-pressure fuel reservoir shown in cross section comprises a base body 1 from a base material in which the longitudinal bore 2 forms an interior.
- a connecting piece 3 in which there is a transverse bore 4 extends perpendicular to the longitudinal bore 2.
- the cross hole opens into the longitudinal hole 2.
- Crane material lines (not shown) lead to the individual via the connecting piece 3 Injectors that inject the fuel into the combustion chamber of the internal combustion engine.
- the base body 1 contains a Inlet part 5 made of a high-strength additional material. This reinforces the area of intersection of holes, to cause cracking due to stress peaks in this area prevent.
- the base body contains the filler material in the form of at least one inlet part 5.
- an inlet part 5 is to be understood as a part of the additional material that is in a recess in the base material of the base body is inserted. This at least replaces it with a part of its volume is the base material of the one already containing the longitudinal bore 2 Main body 1.
- the inlet part 5 can partially in the through the longitudinal bore 2nd protrude cylindrical interior and reduce its volume.
- an inlet part surrounds each 5 each have a transverse bore 4 on the interior of the base body 1 Side of the cross hole 4.
- the high-strength additional material is targeted and saves money Only in the highly stressed during operation of the high-pressure fuel storage Area of intersection of holes used. For example, it can have twice the diameter of the transverse bore 4.
- FIG. 1 In the preferred embodiment of the present invention shown in FIG. 1 is the interior of the base body 1 in the region of the at least one transverse bore 4 just formed by the additional material.
- the inlet part 5 forms a flat surface 6 in the originally cylindrical interior of the base body 1.
- the flat surface 6 extends perpendicular to the center line 7 of the transverse bore 4 and parallel to the center line of the Longitudinal bore 2. It is advantageous that the stress peaks in the area of the intersections be minimized.
- Inlet part 5 has a square cross section. It is a cross section of the inlet part 5 in the shape of a rectangle.
- Figure 2 shows the cross section through a high-pressure fuel reservoir according to the invention with an insert made of a high-strength additional material.
- the high-pressure fuel accumulator shown in cross section comprises (analogous to FIG. 1) a base body 1 made of a base material with a connecting piece 3.
- the basic body 1 contains the longitudinal bore 2
- the connecting piece 3 contains the at least one transverse bore 4.
- An insert part 8 is to be understood as an additional part which is inserted into the interior space present through the longitudinal bore 2 in the base body 1.
- the insert 8 reduces the volume of the cylindrical interior of the base body 1 produced by the longitudinal bore 2.
- an insert 8 made of high-strength additional material surrounds a transverse bore 4 on the side of the transverse bore 4 facing the interior of the base body 1.
- an insert 8 surrounds the interior of the base body 1 facing side of all cross bores 4.
- the insert 8 preferably extends along the entire longitudinal bore 2 or along a large part of its length.
- FIG. 2 In the preferred embodiment of the present invention shown in FIG. 2 is the interior of the base body 1 in the region of the at least one transverse bore 4 formed flat by the insert 8. This results for the reasons already mentioned a maximum pressure resistance of the high-pressure fuel accumulator in the range of Intersection of longitudinal and cross bores.
- FIG Insert 8 has a cross section in the form of a circular section.
- the present invention further relates to a method for producing an inventive High-pressure fuel accumulator in which the additional material (in the form of a Inlet part 5 or an insert part 8) by a thermal joining process into the interior of the base body 1 is inserted.
- the additional material can, for example, by Soldering or welding are connected to the base material of the base body 1. It is also conceivable to introduce the additional material as a melt, which then cools and hardens in the interior of the base body 1.
- High-pressure fuel storage is the additional material (in the form of a Inlet or insert part) inserted by gluing into the interior of the base body.
- a non-positive insertion of the additional material into the interior of the is also conceivable Base body 1, for example by pressing in an inlet part.
- the additional material can also be connected to the base material of the base body 1 by sintering.
- the inlet or insert part to be inserted can already be inserted into the interior of the base body 1 include holes, which after its insertion with the cross holes 4 form a continuous opening.
- the cross holes are advantageous only after inserting the additional material through the connecting pieces and drilled through the additional material. This has the advantage that the holes are exactly aligned and can be manufactured in just one step.
- Figure 3 shows various forms of the introduced additional material in an inventive High-pressure fuel storage.
- an inlet part 9 is shown, which in Cross-section has the shape of a circular ring part.
- the inlet part 9 does not protrude into the through the longitudinal bore 2 generated cylindrical interior.
- Figure 3.2 shows a high-pressure fuel accumulator according to the invention with an inlet part 10, which has a circular sector-shaped cross section and partially in the by Longitudinal bore 2 protrudes cylindrical interior of the base body 1.
- FIG. 3.3 shows a high-pressure fuel accumulator according to the invention with an inlet part 11 shown.
- the inlet part 11 has a cross section, the shape of which is a combination represents a circular ring part with a circular section, the circular section Part of the inlet part 11 in the interior of the base body generated by the longitudinal bore 2 1 protrudes. It is advantageous in this preferred embodiment of the present Invention that the inlet part 11 has a flat surface 6 in the originally cylindrical Interior of the base body 1 forms and thereby the pressure resistance of the high-pressure fuel accumulator is maximized in the area of the intersection of holes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Ein Einspritzsystem dient der Versorgung einer Brennkraftmaschine mit Kraftstoff. Bei dem Common-Rail-System genannten Speichereinspritzsystem sind Druckerzeugung und Einspritzung voneinander zeitlich und örtlich entkoppelt. Eine separate Hochdruckpumpe erzeugt den Einspritzdruck in einem zentralen Kraftstoffhochdruckspeicher. Der Einspritzbeginn und die Einspritzmenge werden durch Ansteuerzeitpunkt und -dauer von elektrisch betätigten Injektoren bestimmt, die über Kraftstoffleitungen mit dem Kraftstoffhochdruckspeicher verbunden sind.An injection system is used to supply an internal combustion engine with fuel. at the common rail system called memory injection system are pressure generation and Injection decoupled from one another in time and place. A separate high pressure pump generates the injection pressure in a central high-pressure fuel reservoir. The start of injection and the injection quantity are controlled by the timing and duration of electrical actuated injectors determined via fuel lines to the high-pressure fuel reservoir are connected.
DE-A 199 36 533 betrifft einen Kraftstoffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem einer Brennkraftmaschine mit einem rohrförmigen Grundkörper, der eine in Längsrichtung verlaufende Sacklochbohrung und mehrere Anschlüsse aufweist.DE-A 199 36 533 relates to a high-pressure fuel accumulator for a common rail fuel injection system an internal combustion engine with a tubular base body, which has a blind bore running in the longitudinal direction and a plurality of connections.
Aus DE-A 199 49 962 ist ein Kraftstoffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem einer Brennkraftmaschine bekannt. Der Kraftstoffhochdruckspeicher besitzt einen hohlen Grundkörper, der mit mehreren Anschlussöffnungen ausgestattet ist. Der Innenraum des Grundkörpers ist dabei im Bereich der Anschlussöffnungen eben ausgebildet.DE-A 199 49 962 describes a high-pressure fuel accumulator for a common rail fuel injection system an internal combustion engine known. The high-pressure fuel accumulator has a hollow body, which is equipped with several connection openings is. The interior of the base body is flat in the area of the connection openings educated.
Die Hochdruckfestigkeit des Kraftstoffhochdruckspeichers wird hauptsächlich durch die Verschneidungen zwischen den Anschlussöffnungen und dem Grundkörper beschränkt. Diese Bohrungsverschneidungen werden durch den Innendruck stark belastet und stellen mögliche Versagensstellen des Kraftstoffhochdruckspeichers dar. Im Betrieb treten dort Spannungsspitzen auf, durch die sich Risse in dem Grundkörper bilden können.The high-pressure strength of the high-pressure fuel reservoir is mainly due to the Intersections between the connection openings and the base body limited. These intersections are heavily loaded by the internal pressure and pose possible failure points of the high-pressure fuel accumulator. In operation occur there Stress peaks, through which cracks can form in the base body.
Ein Vorteil der vorliegenden Erfindung ist, dass die Druckfestigkeit eines Kraftstoffhochdruckspeichers erhöht wird. Sie ergibt sich aufgrund einer stärkeren Belastbarkeit der Bohrungsverschneidungen zwischen der Längsbohrung in dem Grundkörper des Kraftstoffhochdruckspeichers und den Querbohrungen in seinem Anschlussstutzen. An advantage of the present invention is that the compressive strength of a high-pressure fuel accumulator is increased. It results from the greater resilience of the intersections between the longitudinal bore in the base body of the high-pressure fuel accumulator and the cross holes in its connecting piece.
Dieser Vorteil wird erfindungsgemäß durch einen Kraftstriffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem für Brennkraftmaschinen erreicht, der einen Grundkörper aus einem Grundwerkstoff mit mindestens einem Anschlussstutzen umfasst. Der Grundkörper enthält dabei eine einen Innenraum bildende Längsbohrung und der mindestens eine Anschlussstutzen mindestens eine in die Längsbohrung mündende Querbohrung. Der Innenraum des Grundkörpers enthält im Bereich der mindestens einen Querbohrung ein hochfestes Zusatzmaterial.According to the invention, this advantage is provided by a high-pressure power storage for Common rail fuel injection system for internal combustion engines achieved one Includes base body made of a base material with at least one connecting piece. The base body contains a longitudinal bore forming an interior and the at least one a connecting piece at least one transverse bore opening into the longitudinal bore. The interior of the base body contains in the area of the at least one transverse bore a high-strength additional material.
Durch das gezielte Einbringen des hochfesten Zusatzmaterials im Bereich der Bohrungsverschneidungen, die die Schwachstelle des Kraftstoffhochdruckspeichers darstellen, kann in vorteilhafter Weise als Grundwerkstoff für den restlichen Grundkörper ein kostengünstiges niederfestes Material gewählt werden, bevorzugt Stahl.Through the targeted introduction of the high-strength additional material in the area of the drilling intersections, which can represent the weak point of the high-pressure fuel reservoir an inexpensive base material for the rest of the base body low-strength material can be selected, preferably steel.
In einer bevorzugten Ausführungsform der vorliegenden Erfindung enthält das hochfeste Zusatzmaterial mindestens ein Material aus der Gruppe der Eisenwerkstoffe, der Keramikwerkstoffe und der Verbundwerkstoffe.In a preferred embodiment of the present invention, it contains high strength Additional material at least one material from the group of iron materials, ceramic materials and the composite materials.
Anhand der Zeichnungen wird die Erfindung nachstehend näher erläutert.The invention is explained in more detail below with the aid of the drawings.
Es zeigt:
Figur 1- Den Querschnitt durch einen erfindungsgemäßen Kraftstoffhochdruck-speicher mit Einlassteil,
Figur 2- den Querschnitt durch einen erfindungsgemäßen Kraftstoffhochdruckspeicher mit Einlegeteil und
- Figur 3
- verschiedene Formen des eingebrachten Zusatzmaterials in einem erfindungsgemäßen Kraftstoffhochdruckspeicher.
- Figure 1
- The cross section through a high-pressure fuel accumulator according to the invention with an inlet part,
- Figure 2
- the cross section through a high-pressure fuel accumulator according to the invention with insert and
- Figure 3
- Various forms of the additional material introduced in a high-pressure fuel reservoir according to the invention.
Figur 1 zeigt den Querschnitt durch einen erfindungsgemäßen Kraftstoffhochdruckspeicher mit einem Einlassteil aus einem hochfesten Zusatzmaterial. Figure 1 shows the cross section through a high-pressure fuel reservoir according to the invention with an inlet part made of a high-strength additional material.
Der im Querschnitt dargestellte Kraftstoffhochdruckspeicher umfasst einen Grundkörper 1
aus einem Grundwerkstoff, in dem die Längsbohrung 2 einen Innenraum bildet. An dem
Grundkörper 1 ist ein Anschlussstutzen 3 ausgebildet, in dem sich eine Querbohrung 4
senkrecht zur Längsbohrung 2 erstreckt. Die Querbohrung mündet in die Längsbohrung 2.
Über den Anschlussstutzen 3 führen (nicht dargestellte) Kranstoffleitungen zu den einzelnen
Injektoren, die den Kraftstoff in den Brennraum der Brennkraftmaschine einspritzen. In
dem Bereich des Innenraumes des Grundkörpers 1, in dem sich die Bohrungverschneidungen
der Längsbohrung 2 mit der Querbohrung 4 befinden, enthält der Grundkörper 1 ein
Einlassteil 5 aus einem hochfesten Zusatzmaterial. Dieses verstärkt den Bereich der Bohrungsverschneidungen,
um eine Rißbildung durch Spannungsspitzen in diesem Bereich zu
verhindern.The high-pressure fuel reservoir shown in cross section comprises a
In dieser bevorzugten Ausführungsform der vorliegenden Erfindung enthält der Grundkörper
den Zusatzwerkstoff in der Form mindestens eines Einlassteils 5. Unter einem Einlassteil
5 ist dabei ein Teil aus dem Zusatzmaterial zu verstehen, das in eine Vertiefung in
dem Grundwerkstoff des Grundkörpers eingefügt ist. Dadurch ersetzt es zumindest mit
einem Teil seines Volumens das Grundmaterial des bereits die Längsbohrung 2 enthaltenden
Grundkörpers 1. Teilweise kann das Einlassteil 5 in den durch die Längsbohrung 2
erzeugten zylindrischen Innenraum hineinragen und dessen Volumen verringern.In this preferred embodiment of the present invention, the base body contains
the filler material in the form of at least one inlet part 5. Under an inlet part
5 is to be understood as a part of the additional material that is in a recess in
the base material of the base body is inserted. This at least replaces it with
a part of its volume is the base material of the one already containing the
In einer bevorzugten Ausführungsform der vorliegenden Erfindung umgibt je ein Einlassteil
5 je eine Querbohrung 4 an der dem Innenraum des Grundkörpers 1 zugewandten
Seite der Querbohrung 4. Das hochfeste Zusatzmaterial wird dabei gezielt und in kostensparender
Weise nur in dem in Betrieb des Kraftstoffhochdruckspeichers hoch beanspruchten
Bereich der Bohrungsverschneidungen eingesetzt. Es kann beispielsweise den
zweifachen Durchmesser der Querbohrung 4 besitzen.In a preferred embodiment of the present invention, an inlet part surrounds each
5 each have a transverse bore 4 on the interior of the
In der in Figur 1 dargestellten bevorzugten Ausführungsform der vorliegenden Erfindung
ist der Innenraum des Grundkörpers 1 im Bereich der mindestens einen Querbohrung 4
durch das Zusatzmaterial eben ausgebildet. Das Einlassteil 5 bildet dabei eine ebene Fläche
6 in dem ursprünglich zylindrischen Innenraum des Grundkörpers 1. Die ebene Fläche 6
erstreckt sich senkrecht zur Mittellinie 7 der Querbohrung 4 und parallel zur Mittellinie der
Längsbohrung 2. Vorteilhaft ist dabei, dass die Spannungsspitzen im Bereich der Bohrungsverschneidungen
minimiert werden. Je größer das Verhältnis zwischen dem Innendurchmesser
des Grundkörpers 1 und dem Innendurchmesser der Querbohrung 4 ist, um so
höher ist die Druckfestigkeit des Kraftstoffhochdruckspeichers. Durch die ebene Fläche 6
im Innenraum des Grundkörpers 1 im Bereich der Querbohrung 4 wird ein unendlich großer
Innendurchmesser des Grundkörpers simuliert und dadurch die Druckfestigkeit des
Kraftstoffhochdruckspeichers in diesem Bereich maximiert. In the preferred embodiment of the present invention shown in FIG. 1
is the interior of the
In der in Figur 1 dargestellten Ausführungsförm der vorliegenden Erfindung weist das Einlassteil 5 einen viereckigen Querschnitt auf. Dabei handelt es sich um einen Querschnitt des Einlassteils 5 in der Form eines Rechtecks.In the embodiment of the present invention shown in FIG Inlet part 5 has a square cross section. It is a cross section of the inlet part 5 in the shape of a rectangle.
Figur 2 zeigt den Querschnitt durch einen erfindungsgemäßen Kraftstoffhochdruckspeicher mit einem Einlegeteil aus einem hochfesten Zusatzmaterial.Figure 2 shows the cross section through a high-pressure fuel reservoir according to the invention with an insert made of a high-strength additional material.
Der im Querschnitt dargestellte Kraftstoffhochdruckspeicher umfasst (analog zu Figur 1)
einen Grundkörper 1 aus einem Grundwerkstoff mit einem Anschlussstutzen 3. Der
Grundkörper 1 enthält die Längsbohrung 2, der Anschlussstutzen 3 enthält die mindestens
eine Querbohrung 4. In dieser bevorzugten Ausführungsform der vorliegenden Erfindung
liegt der Zusatzwerkstoff in dem Grundkörper 1 in der Form eines Einlegeteils 8 vor. Unter
einem Einlegeteil 8 ist dabei ein zusätzliches Teil zu verstehen, das in den durch die
Längsbohrung 2 im Grundkörper 1 vorliegenden Innenraum eingefügt ist. Das Einlegeteil 8
reduziert das Volumen des durch die Längsbohrung 2 erzeugten zylindrischen Innenraums
des Grundkörpers 1.
In einer bevorzugten Ausführungsform der vorliegenden Erfindung umgibt je ein Einlegeteil
8 aus hochfestem Zusatzmaterial je eine Querbohrung 4 an der dem Innenraum des
Grundkörpers 1 zugewandten Seite der Querbohrung 4. In einer anderen bevorzugten Ausführungsform
der vorliegenden Erfindung umgibt ein Einlegeteil 8 die dem Innenraum des
Grundkörpers 1 zugewandte Seite aller Querbohrungen 4. Dabei erstreckt sich das Einlegeteil
8 vorzugsweise entlang der gesamten Längsbohrung 2 oder entlang einem großen
Teil ihrer Länge.The high-pressure fuel accumulator shown in cross section comprises (analogous to FIG. 1) a
In a preferred embodiment of the present invention, an insert 8 made of high-strength additional material surrounds a transverse bore 4 on the side of the transverse bore 4 facing the interior of the
In der in Figur 2 dargestellten bevorzugten Ausführungsform der vorliegenden Erfindung
ist der Innenraum des Grundkörpers 1 im Bereich der mindestens einen Querbohrung 4
durch das Einlegeteil 8 eben ausgebildet. Dadurch ergibt sich aus bereits genannten Gründen
eine maximale Druckfestigkeit des Kraftstoffhochdruckspeichers in dem Bereich der
Verschneidungen von Längs- und Querbohrungen.In the preferred embodiment of the present invention shown in FIG. 2
is the interior of the
In der in Figur 2 dargestellten Ausführungsform der vorliegenden Erfindung weist das Einlegeteil 8 einen Querschnitt in der Form eines Kreisabschnitts auf.In the embodiment of the present invention shown in FIG Insert 8 has a cross section in the form of a circular section.
Femer betrifft die vorliegende Erfindung ein Verfahren zur Herstellung eines erfindungsgemäßen
Kraftstoffhochdruckspeichers bei dem das Zusatzmaterial (in der Form eines
Einlassteils 5 oder eines Einlegeteils 8) durch ein thermisches Fügeverfahren in den Innenraum
des Grundkörpers 1 eingefügt wird. Das Zusatzmaterial kann beispielsweise durch
Verlöten oder Verschweißen mit dem Grundmaterial des Grundkörpers 1 verbunden werden.
Denkbar ist auch ein Einbringen des Zusatzmaterials als Schmelze, die anschließend
im Innenraum des Grundkörpers 1 abkühlt und aushärtet.The present invention further relates to a method for producing an inventive
High-pressure fuel accumulator in which the additional material (in the form of a
Inlet part 5 or an insert part 8) by a thermal joining process into the interior
of the
In einem weiteren bevorzugten erfindungsgemäßen Verfahren zur Herstellung eines erfindungsgemäßen Kraftstoffhochdruckspeichers wird das Zusatzmaterial (in der Form eines Einlass- oder Einlegeteils) durch Kleben in den Innenraum des Grundkörpers eingefügt.In a further preferred process according to the invention for producing a process according to the invention High-pressure fuel storage is the additional material (in the form of a Inlet or insert part) inserted by gluing into the interior of the base body.
Denkbar ist auch ein kraftschlüssiges Einfügen des Zusatzmaterials in den Innenraum des
Grundkörpers 1, beispielsweise durch Einpressen eines Einlassteils. Das Zusatzmaterial
kann ferner durch Sintern mit dem Grundwerkstoff des Grundkörpers 1 verbunden werden.A non-positive insertion of the additional material into the interior of the is also conceivable
Das einzufügende Einlass- oder Einlegeteil kann bereits vor dem Einfügen in den Innenraum
des Grundkörpers 1 Bohrungen umfassen, die nach seinem Einfügen mit den Querbohrungen
4 eine durchgehende Öffnung bilden. In vorteilhafter Weise werden die Querbohrungen
erst nach dem Einfügen des Zusatzmaterials durch die Anschlussstutzen und
durch das Zusatzmaterial gebohrt. Dies hat den Vorteil, dass die Bohrungen exakt übereinanerliegen
und in nur einem Arbeitsschritt gefertigt werden können.The inlet or insert part to be inserted can already be inserted into the interior
of the
Figur 3 zeigt verschiedene Formen des eingebrachten Zusatzmaterials in einem erfindungsgemäßen
Kraftstoffhochdruckspeicher. In Figur 3.1 ist ein Einlassteil 9 dargestellt, das im
Querschnitt die Form eines Kreisringteils aufweist. In dieser bevorzugten Ausführungsform
der vorliegenden Erfindung ragt das Einlassteil 9 nicht in den durch die Längsbohrung 2
erzeugten zylindrischen Innenraum.Figure 3 shows various forms of the introduced additional material in an inventive
High-pressure fuel storage. In Figure 3.1, an inlet part 9 is shown, which in
Cross-section has the shape of a circular ring part. In this preferred embodiment
According to the present invention, the inlet part 9 does not protrude into the through the
Figur 3.2 zeigt einen erfindungsgemäßen Kraftstoffhochdruckspeicher mit einem Einlassteil
10, das einen kreissektorförmigen Querschnitt besitzt und teilweise in den durch die
Längsbohrung 2 erzeugten zylindrischen Innenraum des Grundkörpers 1 hineinragt.Figure 3.2 shows a high-pressure fuel accumulator according to the invention with an inlet part
10, which has a circular sector-shaped cross section and partially in the by
Longitudinal bore 2 protrudes cylindrical interior of the
In Figur 3.3 ist ein erfindungsgemäßer Kraftstoffhochdruckspeicher mit einem Einlassteil
11 gezeigt. Das Einlassteil 11 weist einen Querschnitt auf, dessen Form eine Kombination
eines Kreisringteils mit einem Kreisabschnitt darstellt, wobei der kreisabschnittförmige
Teil des Einlassteils 11 in den durch die Längsbohrung 2 erzeugten Innenraum des Grundkörpers
1 hineinragt. Vorteilhaft ist bei dieser bevorzugten Ausführungsform der vorliegenden
Erfindung, dass das Einlassteil 11 eine ebene Fläche 6 in dem ursprünglich zylindrischen
Innenraum des Grundkörpers 1 bildet und dadurch die Druckfestigkeit des Kraftstoffhochdruckspeichers
im Bereich der Bohrungsverschneidungen maximiert wird. FIG. 3.3 shows a high-pressure fuel accumulator according to the invention with an inlet part
11 shown. The inlet part 11 has a cross section, the shape of which is a combination
represents a circular ring part with a circular section, the circular section
Part of the inlet part 11 in the interior of the base body generated by the
- 11
- Grundkörperbody
- 22
- Längsbohrunglongitudinal bore
- 33
- Anschlussstutzenspigot
- 44
- Querbohrungcross hole
- 55
- Einlassteilinlet portion
- 66
- ebene Flächeflat surface
- 77
- Mittellinie der QuerbohrungCenter line of the cross hole
- 88th
- Einlegeteilinsert
- 99
-
Einlassteil 1
Inlet part 1 - 1010
-
Einlassteil 2
Inlet part 2 - 1111
- Einlassteil 3Inlet part 3
Claims (11)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10140057 | 2001-08-16 | ||
| DE10140057A DE10140057B4 (en) | 2001-08-16 | 2001-08-16 | High-pressure fuel storage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1284359A1 true EP1284359A1 (en) | 2003-02-19 |
| EP1284359B1 EP1284359B1 (en) | 2008-10-08 |
Family
ID=7695520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02016076A Expired - Lifetime EP1284359B1 (en) | 2001-08-16 | 2002-07-19 | High pressure fuel accumulator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20030056760A1 (en) |
| EP (1) | EP1284359B1 (en) |
| JP (1) | JP3825727B2 (en) |
| DE (2) | DE10140057B4 (en) |
| ES (1) | ES2311040T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2865504A1 (en) * | 2004-01-22 | 2005-07-29 | Denso Corp | High pressure fuel container for high pressure fuel injection system of diesel engine of motor vehicle, has protection unit formed from material having mechanical resistance greater than resistance of material of common rail case |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50302044D1 (en) * | 2002-10-23 | 2006-02-02 | Waertsilae Nsd Schweiz Ag | Pressure accumulator for a common rail system |
| DE10333721B4 (en) * | 2003-07-23 | 2005-07-07 | Benteler Automobiltechnik Gmbh | Fuel rail with a connection piece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000073908A (en) * | 1998-09-01 | 2000-03-07 | Denso Corp | High pressure fuel supply system |
| DE19936533A1 (en) | 1999-08-03 | 2001-02-15 | Bosch Gmbh Robert | High pressure fuel accumulator |
| DE19948338A1 (en) * | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Process for processing a high-pressure fuel accumulator, high-pressure fuel accumulator and connecting piece for using the method |
| DE19949962A1 (en) | 1999-10-16 | 2001-04-26 | Bosch Gmbh Robert | Fuel high pressure storage for a common-rail fuel injection system of IC engine with hollow basic body which is equipped with several connection openings |
| DE10103195A1 (en) * | 2000-01-25 | 2001-08-02 | Usui Kokusai Sangyo Kk | Common management |
| DE10103250A1 (en) * | 2000-01-26 | 2001-08-09 | Usui Kokusai Sangyo Kk | Common line for diesel engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2575624B2 (en) * | 1985-07-25 | 1997-01-29 | 臼井国際産業 株式会社 | Method for manufacturing thick thin polymerized metal pipe for high pressure fuel injection pipe |
| US4716875A (en) * | 1986-08-18 | 1988-01-05 | Troncoso Fernando Jr | Safety plug device for fuel lines |
| JP2796551B2 (en) * | 1989-02-07 | 1998-09-10 | 臼井国際産業株式会社 | Thick and small-diameter fuel injection pipe and method of manufacturing the same |
| DE59701747D1 (en) * | 1996-08-24 | 2000-06-29 | Volkswagen Ag | Device for distributing fuel for an internal combustion engine |
| US6584959B2 (en) * | 1999-05-27 | 2003-07-01 | Itt Manufacturing Enterprises, Inc. | Thick walled convoluted tubing for use in fuel feed and return applications |
| DE19933254A1 (en) * | 1999-07-15 | 2001-01-25 | Bosch Gmbh Robert | Connection piece and housing, in particular high-pressure fuel accumulator, with prestressed welded connection piece for a fuel injection system for internal combustion engines |
| JP2001295723A (en) * | 2000-04-13 | 2001-10-26 | Denso Corp | Pressure accumulation type fuel injection device |
-
2001
- 2001-08-16 DE DE10140057A patent/DE10140057B4/en not_active Expired - Fee Related
-
2002
- 2002-07-19 DE DE50212856T patent/DE50212856D1/en not_active Expired - Fee Related
- 2002-07-19 EP EP02016076A patent/EP1284359B1/en not_active Expired - Lifetime
- 2002-07-19 ES ES02016076T patent/ES2311040T3/en not_active Expired - Lifetime
- 2002-08-14 JP JP2002236671A patent/JP3825727B2/en not_active Expired - Fee Related
- 2002-08-15 US US10/219,363 patent/US20030056760A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000073908A (en) * | 1998-09-01 | 2000-03-07 | Denso Corp | High pressure fuel supply system |
| DE19936533A1 (en) | 1999-08-03 | 2001-02-15 | Bosch Gmbh Robert | High pressure fuel accumulator |
| DE19948338A1 (en) * | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Process for processing a high-pressure fuel accumulator, high-pressure fuel accumulator and connecting piece for using the method |
| DE19949962A1 (en) | 1999-10-16 | 2001-04-26 | Bosch Gmbh Robert | Fuel high pressure storage for a common-rail fuel injection system of IC engine with hollow basic body which is equipped with several connection openings |
| DE10103195A1 (en) * | 2000-01-25 | 2001-08-02 | Usui Kokusai Sangyo Kk | Common management |
| DE10103250A1 (en) * | 2000-01-26 | 2001-08-09 | Usui Kokusai Sangyo Kk | Common line for diesel engine |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2865504A1 (en) * | 2004-01-22 | 2005-07-29 | Denso Corp | High pressure fuel container for high pressure fuel injection system of diesel engine of motor vehicle, has protection unit formed from material having mechanical resistance greater than resistance of material of common rail case |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2311040T3 (en) | 2009-02-01 |
| DE10140057A1 (en) | 2003-03-06 |
| JP2003083200A (en) | 2003-03-19 |
| EP1284359B1 (en) | 2008-10-08 |
| DE10140057B4 (en) | 2007-08-30 |
| DE50212856D1 (en) | 2008-11-20 |
| JP3825727B2 (en) | 2006-09-27 |
| US20030056760A1 (en) | 2003-03-27 |
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