EP1582740A2 - High pressure pump with integrated high pressure accumulator - Google Patents
High pressure pump with integrated high pressure accumulator Download PDFInfo
- Publication number
- EP1582740A2 EP1582740A2 EP05101680A EP05101680A EP1582740A2 EP 1582740 A2 EP1582740 A2 EP 1582740A2 EP 05101680 A EP05101680 A EP 05101680A EP 05101680 A EP05101680 A EP 05101680A EP 1582740 A2 EP1582740 A2 EP 1582740A2
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- EP
- European Patent Office
- Prior art keywords
- pump
- pressure
- accumulator
- pressure accumulator
- high pressure
- 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
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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 is a high pressure seal having.
- a generic high-pressure pump is from the unpublished Patent Application 10360534.7 of the Applicant already known.
- the high-pressure accumulator is from an in the pump housing introduced opening and one in the opening arranged cup-shaped container formed.
- an internal thread is formed and the pot-shaped container has a corresponding with the internal thread External thread on.
- the cup-shaped Container are screwed into the pump housing.
- At the Pump housing and / or cup-shaped container are sealing surfaces to provide a sealing of the high-pressure accumulator to ensure the environment. Due to the high pressures in the Accumulator but it can always come back to that Liquid from the high-pressure accumulator enters the environment.
- the object of the invention is therefore a high-pressure pump with form a high-pressure accumulator, the secure seal the high-pressure accumulator ensures the environment.
- the invention is based on the generic high-pressure pump on that the high pressure seal inside the pump housing is arranged.
- the internal arrangement of High-pressure seal ensures even in the event of a leak, that no fuel in the environment, but at best can get into the pump housing.
- An advantageous embodiment of the invention provides that formed the pump housing and the high pressure accumulator integrally are. Due to the one-piece design of high-pressure pump and high-pressure accumulator results in a particularly low Number of sealing surfaces.
- a further preferred embodiment of the invention sees before that the high-pressure accumulator to at least one high-pressure outlet the high-pressure pump connected in parallel hydraulically is.
- the high pressure accumulator acts as a hydraulic Damper. This is especially beneficial if the High-pressure pump is designed as a radial piston pump, there this design-induced pulsations in the promotion occur.
- the high-pressure pump is preferably a radial piston pump with at least two piston units.
- the pump units V-shaped arranged to each other, preferably with an angular distance of 90 ° to each other.
- the high-pressure accumulator is preferably axial or radially to a drive shaft of the radial piston pump in Pump housing formed.
- the axial or radial arrangement the high-pressure accumulator again allows a very compact Type of high-pressure pump.
- the high-pressure accumulator In such an arrangement particularly easy in the high-pressure pump be introduced.
- 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. Also in case of a leak of the High pressure seal can therefore no liquid in the environment escape.
- the high-pressure pump according to the invention is in particular as a high-pressure fuel pump for common-rail injection systems suitable because in such systems very high Pressures occur and thus special requirements for the seal the high-pressure accumulator are placed.
- the inventive High pressure sealing can meet these requirements correspond.
- 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 arranged to each other 7 on.
- the pump units 7 are at an angular distance arranged at 90 ° to each other.
- the high-pressure accumulator 4 is arranged and formed between the two pump units 7 an angular distance of 45 ° to each pump unit. 7
- the radial piston pump is driven by an eccentric shaft 3, the rotatably disposed in the pump housing 2 is driven.
- the radial piston pump should not be closer be taken as this already from the state of the Technique is well known. For this purpose, for example to the DE 102 28 551 A1 of the applicant.
- the high-pressure accumulator 4 is arranged radially to the drive shaft and formed integrally with the pump housing 2. By the one-piece design of pump housing 2 and high-pressure accumulator 4 results in a very small number Sealing surfaces.
- the high pressure accumulator 4 is through a radial bore 8 formed in the pump housing 2.
- the radial bore 8 is opposite from the high-pressure accumulator 4 Side introduced into the pump housing 2.
- the radial bore 8 is at a right angle to the bearing bore 9 for the Drive shaft 3 is inserted into the pump housing 2.
- the high-pressure accumulator 4 is at its lower end with a high pressure seal 5 closed.
- a high-pressure seal 5 For example, a threaded plug is suitable in the radial bore 8 is screwed.
- the radial bore 8 a corresponding thread on.
- the radial bore 8 is at its open end 10 with a sealing plug 11 closed so that the pump housing 2 to the environment is sealed. These are only the sealing a low pressure seal towards the inside of the pump. At this low pressure seal are much lower Requirements placed as to the high pressure seal 5.
- the high-pressure seal 5 has a leak, the liquid does not get as in the prior art to the environment, but only in the radial bore. 8 and thus into the pump interior. Due to the low pressure seal will prevent the leakage current to the environment can get. This results in a secure seal of the High pressure accumulator 4.
- the high-pressure outlets 12 of the individual pump units 7 are via high pressure lines 13 on the one hand with the high pressure connections 6 and connected to the other with the high-pressure accumulator 4.
- the hydraulic damper ensures a low pulsation Promotion of the fluid.
- the injector lines may be directly, i. without additional Adapter parts such as double nipple to the high pressure pump 1 are connected. This results in advantageously a particularly secure seal between the pump housing 1 and the injector lines.
- throttle 14 For further pulsation damping can in the high pressure output. 6 an additional throttle 14 may be formed. As throttle 14 is particularly suitable for a simple aperture, which in the High-pressure outlet is introduced. The aperture 14 can be special simply formed by a stepped bore in the pump housing 2 be.
- 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 integrally formed. hereby In a particularly advantageous manner, the pressure generation, Print forwarding, pressure storage and pressure distribution realized to the injector in a component. The number of high-pressure interfaces is thus on a minimum reduced.
- Figure 2 shows an external view of a high-pressure pump with integrated High-pressure accumulator largely identical to the High pressure pump of Figure 1 is.
- the high pressure pump only an axially arranged high-pressure accumulator 4.
- the axially arranged high-pressure accumulator 4 takes the height of the High pressure pump 1 off, resulting in an even more compact design results.
- the invention is not limited to the embodiments limited. That's the way it is, for example also possible that the high pressure outputs 6 and the high pressure accumulator 4 not hydraulically parallel, but connected in series are.
- high pressure outlets are on the high pressure accumulator 4 provided.
- the supply lines and high pressure outlets can preferably be formed in, on the high-pressure accumulator, Stiffening ribs are formed.
- V-shaped arrangement of the pump units 7 is it is also possible, an arrangement with an angular distance to provide 180 ° to each other.
- an arrangement with Two pump units is also an arrangement with only one or several, for example, three at an angular distance of each 120 ° staggered pump units conceivable.
- Role shocks For stroke transmission from the drive shaft to the individual Positive displacement piston of the pump units are preferred Role shocks.
- the roller tappets offer the advantage of having camshafts can be used with very steep ramps and also the wear is minimized.
- the proposed high-pressure pump discloses due to the internal Arrangement of the high-pressure seal in the pump housing thus a particularly secure sealing of the high-pressure accumulator opposite 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)
Abstract
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 is a high pressure seal having.
Eine gattungsgemäße Hochdruckpumpe ist aus der nicht vorveröffentlichten Patentanmeldung 10360534.7 der Anmelderin bereits bekannt. Der Hochdruckspeicher ist dabei von einer in das Pumpengehäuse eingebrachten Öffnung und einem in der Öffnung angeordneten topfförmigen Behälter gebildet. In der Öffnung im Pumpengehäuse ist ein Innengewinde ausgebildet und der topfförmige Behälter weist ein mit dem Innengewinde korrespondierendes Außengewinde auf. Hierdurch kann der topfförmige Behälter in das Pumpengehäuse eingeschraubt werden. Am Pumpengehäuse und/oder am topfförmigen Behälter sind Dichtflächen vorzusehen, die ein Abdichten des Hochdruckspeichers zur Umgebung gewährleisten. Aufgrund der hohen Drücke im Druckspeicher kann es aber immer wieder dazu kommen, dass Flüssigkeit aus dem Hochdruckspeicher in die Umgebung gelangt.A generic high-pressure pump is from the unpublished Patent Application 10360534.7 of the Applicant already known. The high-pressure accumulator is from an in the pump housing introduced opening and one in the opening arranged cup-shaped container formed. 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 on. As a result, the cup-shaped Container are screwed into the pump housing. At the Pump housing and / or cup-shaped container are sealing surfaces to provide a sealing of the high-pressure accumulator to ensure the environment. Due to the high pressures in the Accumulator but it can always come back to that Liquid from the high-pressure accumulator enters the environment.
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 a high-pressure pump with form a high-pressure accumulator, the secure seal the high-pressure accumulator ensures the environment.
Die Aufgabe wird gelöst durch den unabhängigen Patentanspruch 1. The object is achieved by the independent claim 1.
Vorteilhafte Ausgestaltung der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiment of the invention are in the subclaims specified.
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 is based on the generic high-pressure pump on that the high pressure seal inside the pump housing is arranged. The internal arrangement of High-pressure seal ensures even in the event of a leak, that no fuel in the environment, but at best can get into the pump housing.
Eine vorteilhafte 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.An advantageous embodiment of the invention provides that formed the pump housing and the high pressure accumulator integrally are. Due to the one-piece design of high-pressure pump and high-pressure accumulator results in a particularly low Number of sealing surfaces.
Eine weitere 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 further preferred embodiment of the invention sees before that the high-pressure accumulator to at least one high-pressure outlet the high-pressure pump connected in parallel hydraulically is. By the parallel connection of high-pressure accumulator and high pressure output, the high pressure accumulator acts as a hydraulic Damper. This is especially beneficial if the High-pressure pump is designed as a radial piston pump, there this design-induced pulsations in the promotion occur.
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 special preferred embodiment of the invention are the pump units V-shaped arranged to each other, preferably with an angular distance of 90 ° to each other. By the v-shaped Arrangement of the pump units results in a particularly compact Type, as between the pump units advantageous 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 preferably axial or radially to a drive shaft of the radial piston pump in Pump housing formed. The axial or radial arrangement the high-pressure accumulator again allows a very compact Type of high-pressure pump. In addition, the high-pressure accumulator In such an arrangement particularly easy in the high-pressure pump be introduced.
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. Also in case of a leak of the High pressure seal can therefore no liquid in the environment escape. The high-pressure pump according to the invention is in particular as a high-pressure fuel pump for common-rail injection systems suitable because in such systems very high Pressures occur and thus special requirements for the seal the high-pressure accumulator are placed. The inventive High pressure sealing can meet these requirements correspond.
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 cross-figure below provided 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-pressure pump 1 according to the invention. The sectional plane lies in a plane with the high-
The high-pressure pump 1 comprises a
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 high-pressure pump 1 is designed as a radial piston pump
and has two V-shaped pump units arranged to each other
7 on. The pump units 7 are at an angular distance
arranged at 90 ° to each other. The high-
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 DE 102 28 551 A1 der Anmelderin hingewiesen.The radial piston pump is driven by an
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.By the arrangement of the high-
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 can in the high pressure output. 6
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-pressure pump 1 is advantageously designed as a monoblock.
In this case, the cylinder heads and the
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. Figure 2 shows an external view of a high-pressure pump with integrated
High-pressure accumulator largely identical to the
High pressure pump of Figure 1 is. In contrast to the high pressure pump
according to Figure 1, the high pressure pump only
an 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
limited. That's the way it is, for example
also possible that the
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 is it is also possible, an arrangement with an angular distance to provide 180 ° to each other. In addition to an arrangement with Two pump units is also an arrangement with only one or several, for example, three at an angular distance of each 120 ° staggered pump units 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 Positive displacement piston of the pump units are preferred Role shocks. The roller tappets offer the advantage of having camshafts can be used with very steep ramps 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.The proposed high-pressure pump discloses due to the internal Arrangement of the high-pressure seal in the pump housing thus a particularly secure sealing of the high-pressure accumulator opposite 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 (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410015266 DE102004015266A1 (en) | 2004-03-29 | 2004-03-29 | High pressure pump with integrated high pressure accumulator |
| DE102004015266 | 2004-03-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1582740A2 true EP1582740A2 (en) | 2005-10-05 |
| EP1582740A3 EP1582740A3 (en) | 2006-01-18 |
| EP1582740B1 EP1582740B1 (en) | 2007-07-04 |
Family
ID=34877635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05101680A Not-in-force 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011104052A3 (en) * | 2010-02-24 | 2012-06-28 | Robert Bosch Gmbh | High pressure pump and high pressure accumulator |
| US9593653B2 (en) | 2015-01-21 | 2017-03-14 | Ford Global Technologies, Llc | Direct injection fuel pump system |
Families Citing this family (2)
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US6398315B1 (en) * | 1997-11-14 | 2002-06-04 | Continental Teves Ag & Co. Ohg | Hydraulic unit for slip-controlled brake systems |
| WO2002084105A1 (en) * | 2001-04-18 | 2002-10-24 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel system of a direct injection internal combustion engine, fuel system and internal combustion engine |
| EP1302655A2 (en) * | 2001-10-12 | 2003-04-16 | C.R.F. Società Consortile per Azioni | Device for fluidtight connection of a fitting to an internal combustion engine fuel injector |
Family Cites Families (4)
| 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 |
| DE20109077U1 (en) * | 2001-05-31 | 2001-08-30 | FEV Motorentechnik GmbH, 52078 Aachen | Piston pump with storage space to generate a demand-driven flow |
-
2004
- 2004-03-29 DE DE200410015266 patent/DE102004015266A1/en not_active Withdrawn
-
2005
- 2005-03-04 EP EP05101680A patent/EP1582740B1/en not_active Not-in-force
- 2005-03-04 DE DE200550000953 patent/DE502005000953D1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6398315B1 (en) * | 1997-11-14 | 2002-06-04 | Continental Teves Ag & Co. Ohg | Hydraulic unit for slip-controlled brake systems |
| 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 |
| WO2002084105A1 (en) * | 2001-04-18 | 2002-10-24 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel system of a direct injection internal combustion engine, fuel system and internal combustion engine |
| EP1302655A2 (en) * | 2001-10-12 | 2003-04-16 | C.R.F. Società Consortile per Azioni | Device for fluidtight connection of a fitting to an internal combustion engine fuel injector |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 01, 31. Januar 2000 (2000-01-31) & JP 11 294292 A (DENSO CORP; TOYOTA MOTOR CORP), 26. Oktober 1999 (1999-10-26) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011104052A3 (en) * | 2010-02-24 | 2012-06-28 | Robert Bosch Gmbh | High pressure pump and high pressure accumulator |
| US9593653B2 (en) | 2015-01-21 | 2017-03-14 | Ford Global Technologies, Llc | Direct injection fuel pump system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1582740B1 (en) | 2007-07-04 |
| DE102004015266A1 (en) | 2005-10-20 |
| EP1582740A3 (en) | 2006-01-18 |
| DE502005000953D1 (en) | 2007-08-16 |
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