EP1582740B1 - High pressure pump with integrated high pressure accumulator - Google Patents
High pressure pump with integrated high pressure accumulator Download PDFInfo
- Publication number
- EP1582740B1 EP1582740B1 EP05101680A EP05101680A EP1582740B1 EP 1582740 B1 EP1582740 B1 EP 1582740B1 EP 05101680 A EP05101680 A EP 05101680A EP 05101680 A EP05101680 A EP 05101680A EP 1582740 B1 EP1582740 B1 EP 1582740B1
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- EP
- European Patent Office
- Prior art keywords
- pump
- pressure
- pressure accumulator
- high pressure
- accumulator
- 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.)
- Expired - Fee Related
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Classifications
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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
Definitions
- the invention relates to a high-pressure pump with a pump housing and a high-pressure accumulator integrated in the pump housing, wherein the high-pressure accumulator has a high-pressure seal.
- a generic high pressure pump is from the US 6,186,118 known. Another high pressure pump is from the unpublished patent application 10360534.7 the applicant already known.
- the high-pressure accumulator is formed by an opening introduced into the pump housing and a pot-shaped container arranged in the opening. In the opening in the pump housing, an internal thread is formed and the pot-shaped container has a corresponding with the internal thread external thread. As a result, the cup-shaped container can be screwed into the pump housing.
- On the pump housing and / or cup-shaped container sealing surfaces are provided to ensure a sealing of the high-pressure accumulator to the environment. Due to the high pressures in the accumulator but it can happen again and again that liquid from the high-pressure accumulator enters the environment.
- the object of the invention is therefore to form a high pressure pump with a high-pressure accumulator, which ensures a secure seal of the high-pressure accumulator to the environment.
- the invention builds on the generic high-pressure pump in that the high-pressure seal is arranged inside the pump housing.
- the internal arrangement of the high-pressure seal ensures even in the event of a leak, that no fuel can get into the environment, but at best into the pump housing.
- the embodiment of the invention provides that the pump housing and the high pressure accumulator are integrally formed.
- the one-piece design of the high-pressure pump and high-pressure accumulator results in a particularly small number of sealing surfaces.
- a preferred embodiment of the invention provides that the high pressure accumulator is hydraulically connected in parallel to at least one high pressure outlet of the high pressure pump. Due to the parallel connection of high-pressure accumulator and high-pressure outlet, the high-pressure accumulator acts as a hydraulic damper. This is particularly advantageous if the high-pressure pump is designed as a radial piston pump, since in this case pulsations occur during the delivery due to the design.
- the high-pressure pump is preferably a radial piston pump with at least two piston units.
- the pump units are arranged in a V-shape to each other, preferably at an angular distance of 90 ° to each other.
- the v-shaped arrangement of the pump units results in a particularly compact Design, as between the pump units advantageously the high-pressure accumulator can be accommodated.
- the high-pressure accumulator is formed axially or radially relative to a drive shaft of the radial piston pump in the pump housing.
- the axial or radial arrangement of the high pressure accumulator in turn allows a very compact design of the high pressure pump.
- the high pressure accumulator can be particularly easily introduced into the high pressure pump in such an arrangement.
- the invention is thus characterized by the fact that the high-pressure seal is arranged inside the pump housing. This results in a secure seal of the high-pressure accumulator to the environment. Even in the case of a leak of the high-pressure seal thus no liquid can escape into the environment.
- the high-pressure pump according to the invention is particularly suitable as a high-pressure fuel pump for common rail injection systems, since in such systems very high pressures occur and thus special demands are placed on the sealing of the high-pressure accumulator.
- the high-pressure seal according to the invention can meet these requirements.
- FIG. 1 shows a radial section through a high-pressure pump 1 according to the invention.
- the sectional plane lies in a plane with the high-pressure lines 13.
- the high-pressure pump 1 comprises a pump housing 2 and a high-pressure accumulator 4 integrated in the pump housing 2.
- the high-pressure accumulator lies in a radial plane located further back for the cutting plane and is therefore shown only by dashed lines.
- the high pressure pump 1 is designed as a radial piston pump and has two V-shaped pump units 7 arranged to one another.
- the pump units 7 are arranged at an angular distance of 90 ° to each other.
- the high-pressure accumulator 4 is arranged between the two pump units 7 and forms an angular distance of 45 ° to each pump unit 7.
- the radial piston pump is driven by an eccentric shaft 3 which is rotatably arranged in the pump housing 2.
- eccentric shaft 3 which is rotatably arranged in the pump housing 2.
- the high-pressure accumulator 4 is arranged radially to the drive shaft and formed integrally with the pump housing 2. Due to the one-piece design of pump housing 2 and high-pressure accumulator 4 results in a very small number of sealing surfaces.
- the high-pressure accumulator 4 is formed by a radial bore 8 in the pump housing 2.
- the radial bore 8 is thereby introduced from the high-pressure accumulator 4 opposite side in the pump housing 2.
- the radial bore 8 is introduced at a right angle to the bearing bore 9 for the drive shaft 3 in the pump housing 2.
- the high pressure accumulator 4 is closed at its lower end with a high pressure seal 5.
- a high-pressure seal 5 for example, a threaded plug is screwed into the radial bore 8.
- the radial bore 8 has a corresponding thread.
- the radial bore 8 is closed at its open end 10 with a sealing plug 11, so that the pump housing 2 is sealed to the environment.
- the seal is merely a low-pressure seal towards the inside of the pump.
- the liquid does not reach the environment as in the prior art, but only in the radial bore 8 and thus in the pump interior.
- the low-pressure seal prevents the leakage current from reaching the environment. This results in a secure seal of the high-pressure accumulator. 4
- the high-pressure outlets 12 of the individual pump units 7 are connected via high-pressure lines 13 to the high-pressure connections 6 on the one hand and to the high-pressure accumulator 4 on the other hand.
- this acts as a hydraulic damper.
- the hydraulic damper ensures a low-pulsation delivery of the fluid.
- the injector lines can be directly, i. be connected to the high-pressure pump 1 without additional adapter parts such as double nipple. This results in an advantageous manner a particularly secure seal between the pump housing 1 and the injector lines.
- an additional throttle 14 may be formed in the high-pressure outlet 6.
- a throttle 14 is in particular a simple aperture, which is introduced into the high-pressure outlet.
- the aperture 14 may be particularly easily formed by a stepped bore in the pump housing 2.
- the high-pressure pump 1 is advantageously designed as a monoblock.
- the cylinder heads and the pump housing 2 and the high pressure accumulator 4 are integrally formed.
- the pressure generation, pressure transfer, pressure storage and the pressure distribution to the injector is realized in a single component in a particularly advantageous manner.
- the number of high-pressure interfaces is thus reduced to a minimum.
- FIG. 2 shows an external view of a high-pressure pump with integrated high-pressure accumulator which is largely identical to the high-pressure pump according to FIG.
- the high-pressure pump has only one axially arranged high-pressure accumulator 4. Due to the axially arranged high-pressure accumulator 4, the height of the high pressure pump 1 decreases, resulting in an even more compact design.
- the invention is not limited to the embodiments.
- the high-pressure outputs 6 and the high-pressure accumulator 4 are not connected in parallel hydraulically but in series.
- high-pressure outlets are provided on the high-pressure accumulator 4.
- the supply lines and high pressure outlets can preferably be formed in, formed on the high-pressure accumulator, stiffening ribs.
- V-shaped arrangement of the pump units 7 it is also possible to provide an arrangement with an angular distance of 180 ° to each other.
- an arrangement with two pump units and an arrangement with only one or more, for example, three at an angular distance of 120 ° offset from each other pump units is conceivable.
- roller joints For stroke transmission from the drive shaft to the individual displacer of the pump units are preferably roller joints.
- the roller tappets have the advantage that camshafts with very steep ramps can be used and also the wear is minimized.
- the proposed high-pressure pump Due to the internal arrangement of the high-pressure seal in the pump housing, the proposed high-pressure pump thus discloses a particularly secure sealing of the high-pressure accumulator with respect to the environment.
- the proposed high-pressure pump is suitable for high-pressure fuel pump, in particular radial piston high-pressure pump in common-rail injection systems.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Hochdruckpumpe mit einem Pumpengehäuse und einem in das Pumpengehäuse integrierten Hochdruckspeicher, wobei der Hochdruckspeicher eine Hochdruckabdichtung aufweist.The invention relates to a high-pressure pump with a pump housing and a high-pressure accumulator integrated in the pump housing, wherein the high-pressure accumulator has a high-pressure seal.
Eine gattungsgemäße Hochdruckpumpe ist aus dem
Aufgabe der Erfindung ist es daher eine Hochdruckpumpe mit einem Hochdruckspeicher auszubilden, die eine sichere Abdichtung des Hochdruckspeichers zur Umgebung gewährleistet.The object of the invention is therefore to form a high pressure pump with a high-pressure accumulator, which ensures a secure seal of the high-pressure accumulator to the environment.
Die Aufgabe wird gelöst durch den unabhängigen Patentanspruch 1.The object is solved by the
Vorteilhafte Ausgestaltung der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.
Die Erfindung baut auf der gattungsgemäßen Hochdruckpumpe dadurch auf, dass die Hochdruckabdichtung im Pumpengehäuse innenliegend angeordnet ist. Die innenliegende Anordnung der Hochdruckabdichtung gewährleistet selbst bei einer Undichtigkeit, dass kein Kraftstoff in die Umgebung, sondern allenfalls in das Pumpengehäuse gelangen kann.The invention builds on the generic high-pressure pump in that the high-pressure seal is arranged inside the pump housing. The internal arrangement of the high-pressure seal ensures even in the event of a leak, that no fuel can get into the environment, but at best into the pump housing.
Die Ausgestaltung der Erfindung sieht vor, dass das Pumpengehäuse und der Hochdruckspeicher einstückig ausgebildet sind. Durch die einstückige Ausbildung von Hochdruckpumpe und Hochdruckspeicher ergibt sich eine besonders geringe Anzahl an Dichtflächen.The embodiment of the invention provides that the pump housing and the high pressure accumulator are integrally formed. The one-piece design of the high-pressure pump and high-pressure accumulator results in a particularly small number of sealing surfaces.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, dass der Hochdruckspeicher zu wenigstens einem Hochdruckausgang der Hochdruckpumpe hydraulisch parallel geschaltet ist. Durch die Parallelschaltung von Hochdruckspeicher und Hochdruckausgang wirkt der Hochdruckspeicher als hydraulischer Dämpfer. Dies ist besonders vorteilhaft, wenn die Hochdruckpumpe als Radialkolbenpumpe ausgebildet ist, da hierbei konstruktionsbedingt Pulsationen bei der Förderung auftreten.A preferred embodiment of the invention provides that the high pressure accumulator is hydraulically connected in parallel to at least one high pressure outlet of the high pressure pump. Due to the parallel connection of high-pressure accumulator and high-pressure outlet, the high-pressure accumulator acts as a hydraulic damper. This is particularly advantageous if the high-pressure pump is designed as a radial piston pump, since in this case pulsations occur during the delivery due to the design.
Erfindungsgemäß bevorzugt ist die Hochdruckpumpe eine Radialkolbenpumpe mit wenigstens zwei Kolbeneinheiten. In einer besonders bevorzugten Ausgestaltung der Erfindung sind die Pumpeneinheiten v-förmig zueinander angeordnet, vorzugsweise mit einem Winkelabstand von 90° zueinander. Durch die v-förmige Anordnung der Pumpeneinheiten ergibt sich eine besonders kompakte Bauform, da zwischen den Pumpeneinheiten vorteilhaft der Hochdruckspeicher untergebracht werden kann.According to the invention, the high-pressure pump is preferably a radial piston pump with at least two piston units. In a particularly preferred embodiment of the invention, the pump units are arranged in a V-shape to each other, preferably at an angular distance of 90 ° to each other. The v-shaped arrangement of the pump units results in a particularly compact Design, as between the pump units advantageously the high-pressure accumulator can be accommodated.
Erfindungsgemäß bevorzugt ist der Hochdruckspeicher axial oder radial zu einer Antriebswelle der Radialkolbenpumpe im Pumpengehäuse ausgebildet. Die axiale bzw. radial Anordnung des Hochdruckspeichers ermöglicht wiederum eine sehr kompakte Bauform der Hochdruckpumpe. Zudem kann der Hochdruckspeicher bei einer derartigen Anordnung besonders einfach in die Hochdruckpumpe eingebracht werden.According to the invention, the high-pressure accumulator is formed axially or radially relative to a drive shaft of the radial piston pump in the pump housing. The axial or radial arrangement of the high pressure accumulator in turn allows a very compact design of the high pressure pump. In addition, the high pressure accumulator can be particularly easily introduced into the high pressure pump in such an arrangement.
Die Erfindung zeichnet sich somit dadurch aus, dass die Hochdruckabdichtung im Pumpengehäuse innenliegend angeordnet ist. Hierdurch ergibt sich eine sichere Abdichtung des Hochdruckspeichers zur Umgebung. Auch im Falle einer Undichtigkeit der Hochdruckabdichtung kann somit keine Flüssigkeit in die Umgebung austreten. Die erfindungsgemäße Hochdruckpumpe ist insbesondere als Kraftstoffhochdruckpumpe für Common-Rail-Einspritzsysteme geeignet, da bei solchen Systemen sehr hohe Drücke auftreten und damit besondere Anforderungen an die Abdichtung des Hochdruckspeichers gestellt werden. Die erfindungsgemäße Hochdruckabdichtung kann diesen Anforderungen entsprechen.The invention is thus characterized by the fact that the high-pressure seal is arranged inside the pump housing. This results in a secure seal of the high-pressure accumulator to the environment. Even in the case of a leak of the high-pressure seal thus no liquid can escape into the environment. The high-pressure pump according to the invention is particularly suitable as a high-pressure fuel pump for common rail injection systems, since in such systems very high pressures occur and thus special demands are placed on the sealing of the high-pressure accumulator. The high-pressure seal according to the invention can meet these requirements.
Ausführungsbeispiele und weitere Vorteile der Erfindung werden im folgenden anhand der Zeichnungen erläutert. Es zeigt schematisch:
- Figur 1:
- einen Radialschnitt durch eine erfindungsgemäße Hochdruckpumpe mit radial angeordnetem Hochdruckspeicher und
- Figur 2:
- eine Außenansicht einer erfindungsgemäßen Hochdruckpumpe mit einem axial angeordneten Hochdruckspeicher.
- FIG. 1:
- a radial section through a high-pressure pump according to the invention with radially arranged high-pressure accumulator and
- FIG. 2:
- an external view of a high-pressure pump according to the invention with an axially arranged high-pressure accumulator.
Funktionsgleiche Elemente sind nachfolgend figurenübergreifend mit den gleichen Bezugszeichen versehen.Functionally identical elements are provided below across the figures with the same reference numerals.
Figur 1 zeigt einen Radialschnitt durch eine erfindungsgemäße Hochdruckpumpe 1. Die Schnittebene liegt in einer Ebene mit den Hochdruckleitungen 13.
Die Hochdruckpumpe 1 umfasst ein Pumpengehäuse 2 und einen in das Pumpengehäuse 2 integrierten Hochdruckspeicher 4. Der Hochdruckspeicher liegt dabei in einer zur Schnitteben weiter zurückliegenden Radialeben und ist daher nur gestrichelt dargestellt.FIG. 1 shows a radial section through a high-
The high-
Die Hochdruckpumpe 1 ist als Radialkolbenpumpe ausgebildet und weist zwei v-förmig zueinander angeordnete Pumpeneinheiten 7 auf. Die Pumpeneinheiten 7 sind in einem Winkelabstand von 90° zueinander angeordnet. Der Hochdruckspeicher 4 ist zwischen den beiden Pumpeneinheiten 7 angeordnet und bildet einen Winkelabstand von je 45° zu jeder Pumpeneinheit 7.The
Die Radialkolbenpumpe wird von einer Exzenterwelle 3, die drehbar im Pumpengehäuse 2 angeordnet ist angetrieben. Auf die Funktionsweise der Radialkolbenpumpe soll hier nicht näher eingegangen werden, da dies bereits aus dem Stand der Technik hinreichend bekannt ist. Hierzu sei beispielsweise auf die
Der Hochdruckspeicher 4 ist radial zur Antriebswelle angeordnet und einstückig mit dem Pumpengehäuse 2 ausgebildet. Durch die einstückige Ausbildung von Pumpengehäuse 2 und Hochdruckspeicher 4 ergibt sich eine besonders geringe Anzahl an Dichtflächen. Der Hochdruckspeicher 4 wird durch eine Radialbohrung 8 im Pumpengehäuse 2 ausgebildet. Die Radialbohrung 8 wird dabei von der dem Hochdruckspeicher 4 gegenüberliegenden Seite in das Pumpengehäuse 2 eingebracht. Die Radialbohrung 8 ist dabei in einem rechten Winkel zur Lagerbohrung 9 für die Antriebswelle 3 in das Pumpengehäuse 2 eingebracht. Der Hochdruckspeicher 4 wird an seinem unteren Ende mit einer Hochdruckabdichtung 5 verschlossen. Als Hochdruckabdichtung 5 eignet sich beispielsweise ein Gewindestopfen der in die Radialbohrung 8 eingeschraubt wird. Hierzu weist die Radialbohrung 8 ein korrespondierendes Gewinde auf. Die Radialbohrung 8 wird an ihrem offenen Ende 10 mit einem Verschlussstopfen 11 verschlossen, so dass das Pumpengehäuse 2 zur Umgebung hin abgedichtet ist. Dabei handelt es sich bei der Abdichtung lediglich um eine Niederdruckabdichtung zum Pumpeninneren hin. An diese Niederdruckabdichtung werden wesentlich geringere Anforderungen gestellt als an die Hochdruckabdichtung 5. Im Falle, dass die Hochdruckabdichtung 5 eine Undichtigkeit aufweist, gelangt die Flüssigkeit nicht wie beim Stand der Technik an die Umgebung, sondern lediglich in die Radialbohrung 8 und somit in das Pumpeninnere. Durch die Niederdruckabdichtung wird verhindert, dass der Leckagestrom an die Umgebung gelangen kann. Somit ergibt sich eine sichere Abdichtung des Hochdruckspeichers 4.The high-
Die Hochdruckabgänge 12 der einzelnen Pumpeneinheiten 7 sind über Hochdruckleitungen 13 zum einen mit den Hochdruckanschlüssen 6 und zum anderen mit dem Hochdruckspeicher 4 verbunden. Durch die Parallelschaltung der Hochdruckausgänge 6 mit dem Hochdruckspeicher 4 wirkt dieser als hydraulischer Dämpfer. Der hydraulischer Dämpfer sorgt für eine pulsationsarme Förderung des Fluides.The high-
Durch die Anordnung der Hochdruckausgänge 6 am Pumpengehäuse 2 können die Injektorleitungen direkt d.h. ohne zusätzliche Adapterteile wie beispielsweise Doppelnippel an die Hochdruckpumpe 1 angeschlossen werden. Hierdurch ergibt sich in vorteilhafter Weise eine besonders sichere Abdichtung zwischen dem Pumpengehäuse 1 und den Injektorleitungen.Due to the arrangement of the high-pressure exits 6 on the
Zur weiteren Pulsationsdämpfung kann im Hochdruckausgang 6 eine zusätzliche Drossel 14 ausgebildet sein. Als Drossel 14 eignet sich insbesondere eine einfache Blende, die in den Hochdruckausgang eingebracht ist. Die Blende 14 kann besonders einfach durch eine Stufenbohrung im Pumpengehäuse 2 ausgebildet sein.For further pulsation damping, an
Die Hochdruckpumpe 1 ist vorteilhaft als Monoblock ausgeführt. Dabei sind die Zylinderköpfe und das Pumpengehäuse 2 sowie der Hochdruckspeicher 4 einstückig ausgebildet. Hierdurch wird in besonders vorteilhafter Weise die Druckerzeugung, Druckweiterleitung, Druckspeicherung sowie die Druckverteilung zu den Injektorleitung in einem Bauteil realisiert. Die Anzahl der Hochdruckschnittstellen wird damit auf ein Minimum reduziert.The high-
Figur 2 zeigt eine Außenansicht einer Hochdruckpumpe mit integriertem Hochdruckspeicher die weitgehend identisch mit der Hochdruckpumpe nach Figur 1 ist. Im Gegensatz zu der Hochdruckpumpe nach Figur 1 weist die Hochdruckpumpe lediglich einen axial angeordneten Hochdruckspeicher 4 auf. Durch den axial angeordneten Hochdruckspeicher 4 nimmt die Bauhöhe der Hochdruckpumpe 1 ab, wodurch sich eine noch kompaktere Bauform ergibt.FIG. 2 shows an external view of a high-pressure pump with integrated high-pressure accumulator which is largely identical to the high-pressure pump according to FIG. In contrast to the high-pressure pump according to FIG. 1, the high-pressure pump has only one axially arranged high-
Die Erfindung ist selbstverständlich nicht auf die Ausführungsbeispiele beschränkt. So ist es beispielsweise auch möglich, dass die Hochdruckausgänge 6 und der Hochdruckspeicher 4 nicht hydraulisch parallel, sondern in Reihe geschaltet sind. In diesem Fall sind Hochdruckabgänge am Hochdruckspeicher 4 vorgesehen. Die Zuleitungen und Hochdruckabgänge können dabei bevorzugt in, am Hochdruckspeicher ausgebildeten, Versteifungsrippen ausgebildet werden.Of course, the invention is not limited to the embodiments. For example, it is also possible that the high-
Anstelle der v-förmigen Anordnung der Pumpeneinheiten 7 ist es ebenfalls möglich, eine Anordnung mit einem Winkelabstand von 180° zueinander vorzusehen. Neben einer Anordnung mit zwei Pumpeneinheiten ist auch eine Anordnung mit nur einer oder mehreren beispielsweise drei in einem Winkelabstand von je 120° zueinander versetzten Pumpeneinheiten denkbar.Instead of the V-shaped arrangement of the pump units 7, it is also possible to provide an arrangement with an angular distance of 180 ° to each other. In addition to an arrangement with two pump units and an arrangement with only one or more, for example, three at an angular distance of 120 ° offset from each other pump units is conceivable.
Zur Hubübertragung von der Antriebswelle zu den einzelnen Verdrängerkolben der Pumpeneinheiten eignen sich bevorzugt Rollenstöße. Die Rollenstößel bieten den Vorteil, dass Nockenwellen mit sehr steilen Rampen verwendet werden können und zudem der Verschleiß minimiert wird.For stroke transmission from the drive shaft to the individual displacer of the pump units are preferably roller joints. The roller tappets have the advantage that camshafts with very steep ramps can be used and also the wear is minimized.
Die vorgeschlagene Hochdruckpumpe offenbart auf Grund der innenliegenden Anordnung der Hochdruckabdichtung im Pumpengehäuse somit eine besonders sichere Abdichtung des Hochdruckspeichers gegenüber der Umgebung. Die vorgeschlagene Hochdruckpumpe eignet sich für Kraftstoffhochdruckpumpe, insbesondere Radialkolbenhochdruckpumpe in Common-Rail-Einspritzsystemen.Due to the internal arrangement of the high-pressure seal in the pump housing, the proposed high-pressure pump thus discloses a particularly secure sealing of the high-pressure accumulator with respect to the environment. The proposed high-pressure pump is suitable for high-pressure fuel pump, in particular radial piston high-pressure pump in common-rail injection systems.
Claims (4)
- Radial piston pump (1) having at least two pump units (7) and having a pump housing (2) and a high pressure accumulator (4) integrated into the pump housing (2), with the high pressure accumulator (4) featuring a high pressure seal (5), which is arranged inside the pump housing (2), characterized in that the pump housing (2) and the high pressure accumulator (4) are designed to be one piece.
- Radial piston pump (1) according to claim 1,
characterised in that
the high pressure accumulator (4) is hydraulically connected in parallel to at least one high-pressure output (6) of the radial piston pump (1). - Radial piston pump (1) according to one of the preceding claims, characterized in that the pump units (7) are arranged in a V-shape to one another, preferably at an angular distance of 90°.
- Radial piston pump (1) as claimed in one of the preceding claims, characterized in that the high pressure accumulator (4) is designed to be axial or radial to a drive shaft (3) of the radial piston pump (1) in the pump housing (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004015266 | 2004-03-29 | ||
| DE200410015266 DE102004015266A1 (en) | 2004-03-29 | 2004-03-29 | High pressure pump with integrated high pressure accumulator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1582740A2 EP1582740A2 (en) | 2005-10-05 |
| EP1582740A3 EP1582740A3 (en) | 2006-01-18 |
| EP1582740B1 true EP1582740B1 (en) | 2007-07-04 |
Family
ID=34877635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05101680A Expired - Fee Related EP1582740B1 (en) | 2004-03-29 | 2005-03-04 | High pressure pump with integrated high pressure accumulator |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1582740B1 (en) |
| DE (2) | DE102004015266A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007039892A1 (en) | 2007-08-23 | 2009-02-26 | Continental Automotive Gmbh | Injection system for an internal combustion engine |
| DE102009000964A1 (en) * | 2009-02-18 | 2010-08-19 | Robert Bosch Gmbh | High pressure fuel pump for an internal combustion engine |
| DE102010002291A1 (en) * | 2010-02-24 | 2011-08-25 | Robert Bosch GmbH, 70469 | High pressure pump and high pressure accumulator |
| US9593653B2 (en) | 2015-01-21 | 2017-03-14 | Ford Global Technologies, Llc | Direct injection fuel pump system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4240590A1 (en) * | 1992-12-03 | 1994-06-09 | Uraca Pumpen | Positive displacement pump |
| DE19527402A1 (en) * | 1995-07-27 | 1997-01-30 | Teves Gmbh Alfred | pump |
| DE19605781B4 (en) * | 1996-02-16 | 2005-04-28 | Zahnradfabrik Friedrichshafen | Radial piston pump |
| JP4369617B2 (en) * | 1997-11-14 | 2009-11-25 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | Hydraulic device for slip control type brake device |
| JPH11294292A (en) * | 1998-04-15 | 1999-10-26 | Denso Corp | Accumulator type fuel injection device |
| US6186118B1 (en) * | 1999-11-10 | 2001-02-13 | Delphi Technologies, Inc. | Integrated fuel rail and direct injection fuel pump |
| DE10118884A1 (en) * | 2001-04-18 | 2002-11-07 | Bosch Gmbh Robert | High-pressure fuel pump for a fuel system of a direct-injection internal combustion engine, fuel system and internal combustion engine |
| DE20109077U1 (en) * | 2001-05-31 | 2001-08-30 | FEV Motorentechnik GmbH, 52078 Aachen | Piston pump with storage space to generate a demand-driven flow |
| ITTO20010968A1 (en) * | 2001-10-12 | 2003-04-12 | C R F Societa Con Sortile Per | SEALING CONNECTION DEVICE OF A FITTING ON A FUEL INJECTOR FOR ENDOTHERMAL ENGINES. |
-
2004
- 2004-03-29 DE DE200410015266 patent/DE102004015266A1/en not_active Withdrawn
-
2005
- 2005-03-04 EP EP05101680A patent/EP1582740B1/en not_active Expired - Fee Related
- 2005-03-04 DE DE200550000953 patent/DE502005000953D1/en active Active
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004015266A1 (en) | 2005-10-20 |
| EP1582740A3 (en) | 2006-01-18 |
| DE502005000953D1 (en) | 2007-08-16 |
| EP1582740A2 (en) | 2005-10-05 |
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