EP1989448B1 - Oil-pump and vacuum-pump module - Google Patents

Oil-pump and vacuum-pump module Download PDF

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Publication number
EP1989448B1
EP1989448B1 EP07704538A EP07704538A EP1989448B1 EP 1989448 B1 EP1989448 B1 EP 1989448B1 EP 07704538 A EP07704538 A EP 07704538A EP 07704538 A EP07704538 A EP 07704538A EP 1989448 B1 EP1989448 B1 EP 1989448B1
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EP
European Patent Office
Prior art keywords
pump
housing
oil
module
vacuum pump
Prior art date
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Active
Application number
EP07704538A
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German (de)
French (fr)
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EP1989448A1 (en
Inventor
Robert Klaar
Paulo Cerveira
Ralph JÖRGENS
Michael Rombach
Albert Genster
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Pierburg GmbH
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Pierburg GmbH
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Priority claimed from DE200620002823 external-priority patent/DE202006002823U1/en
Priority claimed from DE200610029553 external-priority patent/DE102006029553A1/en
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP1989448A1 publication Critical patent/EP1989448A1/en
Application granted granted Critical
Publication of EP1989448B1 publication Critical patent/EP1989448B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps

Definitions

  • the invention relates to an oil pump and vacuum pump module for internal combustion engines.
  • Internal combustion engines such as gasoline and diesel engines, have an oil pump for lubricant delivery.
  • the oil pump is driven by an output shaft of the internal combustion engine, which is usually connected to the crankshaft.
  • the oil pump is located within the crankshaft housing or flanged to this.
  • Vacuum pumps are provided for operating vacuum units.
  • the drive of the vacuum pump also takes place via an output shaft of the internal combustion engine, which is usually connected to the camshaft.
  • Vacuum pumps are usually arranged in the region of the cylinder head and flanged to the engine housing in this area.
  • JP 61222857 A discloses a combined oil pump and vacuum pump module which is mounted to a motor housing with a separate retainer.
  • the invention has for its object to simplify the use of oil pumps and vacuum pumps in internal combustion engines and in particular to reduce their assembly costs.
  • a module which comprises both the oil pump and the vacuum pump.
  • the housing parts in particular the housing halves, in such a way that they complement each other.
  • a rotating oil delivery element of the oil pump and a rotating air conveying element of the vacuum pump on a common drive shaft, in particular rotationally fixed are arranged. Both pumps are thus driven by a common shaft. This has the advantage that a drive shaft is eliminated and in particular only the common drive shaft must be stored.
  • One of the two pump housings in particular the first pump housing, has a mounting surface. This runs radially to the axis of the drive shaft.
  • the second pump housing which is in particular the vacuum pump housing, mountable.
  • the mounting surface is not only used for mounting the second pump housing, but also for mounting the entire module, for example on the crankshaft housing. This has the advantage that a single mounting surface is used for two assemblies. As a result, the manufacturing cost can be reduced because only one mounting surface must be edited.
  • the module comprises a first and a second pump housing or two housing halves.
  • the oil pump is arranged in each case one pump housing and the vacuum pump in the other.
  • a first pump housing which is preferably the oil pump housing, has two opposing openings. From these openings protrudes the drive shaft, wherein one of the drive shafts with a drive element, such as a gear, and the other end is connected to a conveying element, in particular the air conveying element of the vacuum pump.
  • the drive shaft is preferably formed integrally.
  • the module can be arranged on the motor housing. It is particularly preferable to arrange the entire module within the motor housing, in particular within the crankshaft housing.
  • a particular cylindrically shaped recess may be provided into which the second pump housing is inserted.
  • a corresponding mounting surface is provided, against which the mounting surface of the module according to the invention is applied.
  • the module according to the invention can thus be extremely space-saving, in particular within the crankshaft housing, are arranged.
  • the second pump housing is open exclusively in the direction of the mounting surface.
  • the corresponding connections for the pump arranged in the second pump housing, in particular the vacuum pump are thus formed by the first pump housing. This has the advantage that the second pump housing can be made extremely simple. It is particularly preferred to provide a pot-shaped housing, which is produced in particular from a sheet metal, as the second pump housing.
  • the oil pump and the vacuum pump are combined to form a module, it is possible in a simple manner to supply the vacuum pump with lubricant.
  • the two pumps are connected to each other in a preferred embodiment via a lubricant channel. This is promoted by the oil pump lubricant to the vacuum pump. In particular, due to the small distance between the two pumps lubrication of the vacuum pump is ensured in a simple manner.
  • the oil pump and vacuum pump module has a first housing 10, which is the oil pump housing in the illustrated embodiment.
  • a second, cup-shaped housing 12 is formed as a vacuum pump housing.
  • a common drive shaft 14 is rotatably connected to an oil delivery element 16 and an air conveyor element 18.
  • the oil delivery element 16 cooperates with a second delivery element 20 of the oil pump, wherein the oil pump in the illustrated embodiment is a gerotor pump which conveys oil from an oil inlet 22 in the direction of an oil outlet 24.
  • the oil pump housing 10 has two openings 26, 27 from which protrude the two ends of the drive shaft.
  • the opening 26 is closed by a housing cover 28, wherein the drive shaft 14 is slidably mounted in a bearing 30 of the lid 38 and projects through the housing cover 28 therethrough.
  • a drive element 34 is arranged in the form of a sprocket and rotatably connected to the drive shaft 14.
  • the drive element 34 is connected to a motor output shaft, for example via a further gear or a chain.
  • the oil pump 11 is thus arranged completely within the housing 10 closed by the housing cover 28.
  • the vacuum pump 13 which is in particular a rotary vane pump, is arranged substantially inside the cup-shaped housing 12, which is preferably a housing made of sheet metal. In the illustrated embodiment, the vacuum pump housing 2 has no connections of the vacuum pump.
  • the port 36 ( Fig. 1 ) for the vacuum pump is disposed in the first housing 10, that is, in the oil pump housing.
  • a delivery chamber 38 arranged in the vacuum pump housing 12 is connected to the outlet 36 via a channel 40.
  • the first housing 10 has a mounting surface 42, which may be stepped if necessary.
  • the second housing 12 is secured by screws 44. Since the mounting surface 42 according to the invention projects radially beyond the second housing 12, the entire module can be mounted on the remaining mounting surface on or in a crankcase.
  • the assembly is in a crankcase, wherein the second pump housing 12 is inserted into a recess provided in the crankshaft housing recess, so that the remaining mounting surface 42 abuts against a corresponding provided within the crankshaft housing mounting surface.
  • the module can then, for example, by means of screws which through openings 46 ( Fig. 1 ) are mounted by fastening the screws into threads disposed on the mounting surface provided in the crankcase,
  • Another essential aspect of the invention is that in the mounting surface 42, the terminals 24 and 36 are provided for the oil pump 11 and the vacuum pump 13. This has the advantage that at the same time the connections are fluidly connected when mounting the module.
  • the mounting surface 42 is preferably aligned radially to the axis 48 of the drive shaft 14.
  • the mounting surface 42 further represents the parting plane between the two housing halves 10, 12 and the first housing 10 and the second housing 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

An oil-pump and vacuum-pump module for internal combustion engines has an oil pump (11) and a vacuum pump (13). An oil conveying means (16) of the oil pump (11) and an air conveying means (18) of the vacuum pump (13) are arranged on a common drive shaft (14) and are therefore driven jointly via a single shaft. The pump module according to the invention preferably has a common mounting face, with the result that both pumps can be mounted via one mounting face.

Description

Die Erfindung betrifft ein Ölpumpen- und Vakuumpumpenmodul für Brennkraftmaschinen.The invention relates to an oil pump and vacuum pump module for internal combustion engines.

Brennkraftmaschinen, wie Otto- und Dieselmotoren, weisen eine Ölpumpe zur Schmiermittelförderung auf. Die Ölpumpe wird von einer Abtriebswelle der Brennkraftmaschine, die üblicherweise mit der Kurbelwelle verbunden ist, angetrieben. Die Ölpumpe ist innerhalb des Kurbelwellengehäuses angeordnet oder an dieses angeflanscht.Internal combustion engines, such as gasoline and diesel engines, have an oil pump for lubricant delivery. The oil pump is driven by an output shaft of the internal combustion engine, which is usually connected to the crankshaft. The oil pump is located within the crankshaft housing or flanged to this.

Zum Betreiben von Vakuumaggregaten sind Vakuumpumpen vorgesehen. Der Antrieb der Vakuumpumpe erfolgt ebenfalls über eine Abtriebswelle der Brennkraftmaschine, die üblicherweise mit der Nockenwelle verbunden ist. Vakuumpumpen sind üblicherweise im Bereich des Zylinderkopfs angeordnet und in diesem Bereich an das Motorgehäuse angeflanscht.Vacuum pumps are provided for operating vacuum units. The drive of the vacuum pump also takes place via an output shaft of the internal combustion engine, which is usually connected to the camshaft. Vacuum pumps are usually arranged in the region of the cylinder head and flanged to the engine housing in this area.

Aus DE 101 49 388 ist es bekannt, zwei Fluidpumpen, d.h. zwei Ölpumpen, miteinander zu koppeln. Hierbei ist eine erste Ölpumpe an das Kurbelwellengehäuse angeflanscht. Die Antriebswelle der Ölpumpe ist einerseits mit der Abtriebswelle der Brennkraftmaschine verbunden und weist andererseits eine Verbindungsmöglichkeit auf. Diese Verbindungs- oder Kopplungsmöglichkeit der Antriebswelle ist an dem dem Kurbelwellengehäuse abgewandten Ende der Antriebswelle vorgesehen. Über diese Kupplung kann eine weitere Ölpumpe mit der ersten Ölpumpe verbunden werden. Hierdurch soll ein modularer Aufbau von Ölpumpen erzielt werden, so dass, je nach Anwendungsgebiet, die gewünschte Förderleistung durch Kombination zweier Standard-Ölpumpen erzielt werden kann. Hierbei ist es erforderlich, dass die erste Ölpumpe einen Montageflansch zur Verbindung mit einer zweiten Ölpumpe aufweist. Ein weiterer Montageflansch muss an dem Kurbelwellengehäuse zur Montage der ersten Ölpumpe vorgesehen sein. Bei Montageflanschen handelt es sich um bearbeitete Oberflächen, so dass hierdurch die Fertigungskosten erhöht werden.Out DE 101 49 388 It is known to couple two fluid pumps, ie two oil pumps, to one another. Here, a first oil pump is flanged to the crankcase. The drive shaft of the oil pump is on the one hand connected to the output shaft of the internal combustion engine and on the other hand has a connection possibility. This connection or coupling possibility of the drive shaft is at the crankshaft housing provided opposite end of the drive shaft. About this coupling, another oil pump can be connected to the first oil pump. This is to achieve a modular design of oil pumps, so that, depending on the field of application, the desired delivery rate can be achieved by combining two standard oil pumps. In this case, it is necessary for the first oil pump to have a mounting flange for connection to a second oil pump. Another mounting flange must be provided on the crankshaft housing for mounting the first oil pump. Mounting flanges are machined surfaces, thereby increasing manufacturing costs.

In JP 61222857 A ist ein kombiniertes Ölpumpen- und Vakuumpumpenmodul offenbart, das mit einer separaten Haltevorrichtung an einem Motorgehäuse montiert wird.In JP 61222857 A discloses a combined oil pump and vacuum pump module which is mounted to a motor housing with a separate retainer.

Ähnliche kombinierte Ölpumpen- und Vakuumpumpenmodule sind bekannt aus US 4,497,618 und WO2004/092588 A1 .Similar combined oil pump and vacuum pump modules are known from US 4,497,618 and WO2004 / 092588 A1 ,

Der Erfindung liegt die Aufgabe zugrunde, den Einsatz von Ölpumpen sowie von Vakuumpumpen bei Brennkraftmaschinen zu vereinfachen und insbesondere deren Montageaufwand zu verringern.The invention has for its object to simplify the use of oil pumps and vacuum pumps in internal combustion engines and in particular to reduce their assembly costs.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Anspruchs 1.The object is achieved according to the invention by the features of claim 1.

Erfindungsgemäß ist ein Modul geschaffen, das sowohl die Ölpumpe als auch die Vakuumpumpe umfasst. Durch die Zusammenfassung der Ölpumpe und der Vakuumpumpe zu einem gemeinsamen ggf. vormontierbaren Modul ist der Montageaufwand erheblich verringert. Auch ist es hierdurch möglich, die Gehäuseteile, insbesondere die Gehäusehälften derart zu gestalten, dass sich diese ergänzen. Dies hat den Vorteil, dass keine zwei gesonderten Gehäuse hergestellt werden müssen. Besonders bevorzugt ist es hierbei, dass ein rotierendes Ölförderelement der Ölpumpe und ein rotierendes Luftförderelement der Vakuumpumpe auf einer gemeinsamen Antriebswelle, insbesondere drehfest, angeordnet sind. Beide Pumpen werden somit über eine gemeinsame Welle angetrieben. Dies hat den Vorteil, dass eine Antriebswelle entfällt und insbesondere nur die gemeinsame Antriebswelle gelagert werden muss.According to the invention, a module is provided which comprises both the oil pump and the vacuum pump. By combining the oil pump and the vacuum pump to a common, possibly preassembled module assembly costs are significantly reduced. This also makes it possible to design the housing parts, in particular the housing halves, in such a way that they complement each other. This has the advantage that no two separate housing must be made. It is particularly preferred that a rotating oil delivery element of the oil pump and a rotating air conveying element of the vacuum pump on a common drive shaft, in particular rotationally fixed, are arranged. Both pumps are thus driven by a common shaft. This has the advantage that a drive shaft is eliminated and in particular only the common drive shaft must be stored.

Eines der beiden Pumpengehäuse, insbesondere das erste Pumpengehäuse, weist eine Montagefläche auf. Diese verläuft radial zur Achse der Antriebswelle. Auf diese Montagefläche ist das zweite Pumpengehäuse, bei dem es sich insbesondere um das Vakuumpumpengehäuse handelt, montierbar. Die Montagefläche dient nicht nur zur Montage des zweiten Pumpengehäuses, sondern auch zur Montage des gesamten Moduls, beispielsweise an dem Kurbelwellengehäuse. Dies hat den Vorteil, dass eine einzige Montagefläche für zwei Montagen genutzt wird. Hierdurch können die Herstellungskosten verringert werden, da nur eine Montagefläche bearbeitet werden muss.One of the two pump housings, in particular the first pump housing, has a mounting surface. This runs radially to the axis of the drive shaft. On this mounting surface, the second pump housing, which is in particular the vacuum pump housing, mountable. The mounting surface is not only used for mounting the second pump housing, but also for mounting the entire module, for example on the crankshaft housing. This has the advantage that a single mounting surface is used for two assemblies. As a result, the manufacturing cost can be reduced because only one mounting surface must be edited.

Vorzugsweise umfasst das Modul ein erstes und ein zweites Pumpengehäuse bzw. zwei Gehäusehälften. Hierbei ist es bevorzugt, dass in jeweils einem Pumpengehäuse die Ölpumpe und in dem anderen die Vakuumpumpe angeordnet ist. Ein erstes Pumpengehäuse, bei dem es sich vorzugsweise um das Ölpumpengehäuse handelt, weist zwei einander gegenüberliegende Öffnungen auf. Aus diesen Öffnungen ragt die Antriebswelle, wobei eine der Antriebswellen mit einem Antriebselement, wie einem Zahnrad, und das andere Ende mit einem Förderelement, insbesondere dem Luftförderelement der Vakuumpumpe verbunden ist. Hierbei ist die Antriebswelle vorzugsweise einstückig ausgebildet.Preferably, the module comprises a first and a second pump housing or two housing halves. In this case, it is preferred that the oil pump is arranged in each case one pump housing and the vacuum pump in the other. A first pump housing, which is preferably the oil pump housing, has two opposing openings. From these openings protrudes the drive shaft, wherein one of the drive shafts with a drive element, such as a gear, and the other end is connected to a conveying element, in particular the air conveying element of the vacuum pump. Here, the drive shaft is preferably formed integrally.

Das Modul kann an dem Motorgehäuse angeordnet sein. Besonders bevorzugt ist es, das gesamte Modul innerhalb des Motorgehäuses, insbesondere innerhalb des Kurbelwellengehäuses, anzuordnen. Hierzu kann in dem Kurbelwellengehäuse eine insbesondere zylindrisch ausgebildete Vertiefung vorgesehen sein, in die das zweite Pumpengehäuse gesteckt wird. In der Ebene der Öffnung oder Vertiefung bzw. Ausnehmung ist eine entsprechende Montagefläche vorgesehen, an der die Montagefläche des erfindungsgemäßen Moduls anliegt. Das erfindungsgemäße Modul kann somit äußerst platzsparend, insbesondere innerhalb des Kurbelwellengehäuses, angeordnet werden. Vorzugsweise ist das zweite Pumpengehäuse ausschließlich in Richtung der Montagefläche offen. Die entsprechenden Anschlüsse für die in dem zweiten Pumpengehäuse angeordnete Pumpe, insbesondere die Vakuumpumpe, sind somit durch das erste Pumpengehäuse ausgebildet. Dies hat den Vorteil, dass das zweite Pumpengehäuse äußerst einfach ausgebildet sein kann. Besonders bevorzugt ist es, als zweites Pumpengehäuse ein topfförmiges Gehäuse, das insbesondere aus einem Metallblech hergestellt ist, vorzusehen.The module can be arranged on the motor housing. It is particularly preferable to arrange the entire module within the motor housing, in particular within the crankshaft housing. For this purpose, in the crankshaft housing a particular cylindrically shaped recess may be provided into which the second pump housing is inserted. In the plane of the opening or recess or recess, a corresponding mounting surface is provided, against which the mounting surface of the module according to the invention is applied. The module according to the invention can thus be extremely space-saving, in particular within the crankshaft housing, are arranged. Preferably, the second pump housing is open exclusively in the direction of the mounting surface. The corresponding connections for the pump arranged in the second pump housing, in particular the vacuum pump, are thus formed by the first pump housing. This has the advantage that the second pump housing can be made extremely simple. It is particularly preferred to provide a pot-shaped housing, which is produced in particular from a sheet metal, as the second pump housing.

Da erfindungsgemäß die Ölpumpe und die Vakuumpumpe zu einem Modul zusammengefasst sind, ist es auf einfache Weise möglich, die Vakuumpumpe mit Schmiermittel zu versorgen. Hierzu sind die beiden Pumpen in bevorzugter Ausführungsform über einen Schmiermittelkanal miteinander verbunden. Durch diesen wird von der Ölpumpe Schmiermittel zu der Vakuumpumpe gefördert. Insbesondere aufgrund des geringen Abstands der beiden Pumpen ist auf einfache Weise eine Schmierung der Vakuumpumpe sichergestellt.Since according to the invention the oil pump and the vacuum pump are combined to form a module, it is possible in a simple manner to supply the vacuum pump with lubricant. For this purpose, the two pumps are connected to each other in a preferred embodiment via a lubricant channel. This is promoted by the oil pump lubricant to the vacuum pump. In particular, due to the small distance between the two pumps lubrication of the vacuum pump is ensured in a simple manner.

Nachfolgend wird die Erfindung anhand einer bevorzugten Ausführungsform unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.The invention will be explained in more detail with reference to a preferred embodiment with reference to the accompanying drawings.

Es zeigen:

Fig. 1
eine schematische perspektivische Ansicht des erfindungsgemäßen Moduls,
Fig. 2
eine schematische Seitenansicht des Moduls, und
Fig. 3
einen schematischen Längsschnitt des in Fig. 2 dargestellten Moduls.
Show it:
Fig. 1
a schematic perspective view of the module according to the invention,
Fig. 2
a schematic side view of the module, and
Fig. 3
a schematic longitudinal section of the in Fig. 2 illustrated module.

Das erfindungsgemäße Ölpumpen- und Vakuumpumpenmodul weist ein erstes Gehäuse 10 auf, bei dem es sich im dargestellten Ausführungsbeispiel um das Ölpumpengehäuse handelt. Ein zweites, topfförmig ausgebildetes Gehäuse 12 ist als Vakuumpumpengehäuse ausgebildet. Eine gemeinsame Antriebswelle 14 ist drehfest mit einem Ölförderelement 16 sowie einem Luftförderelement 18 verbunden. Das Ölförderelement 16 wirkt mit einem zweiten Förderelement 20 der Ölpumpe zusammen, wobei es sich bei der Ölpumpe im dargestellten Ausführungsbeispiel um eine Gerotorpumpe handelt, die Öl von einem Öleinlass 22 in Richtung eines Ölauslasses 24 fördert.The oil pump and vacuum pump module according to the invention has a first housing 10, which is the oil pump housing in the illustrated embodiment. A second, cup-shaped housing 12 is formed as a vacuum pump housing. A common drive shaft 14 is rotatably connected to an oil delivery element 16 and an air conveyor element 18. The oil delivery element 16 cooperates with a second delivery element 20 of the oil pump, wherein the oil pump in the illustrated embodiment is a gerotor pump which conveys oil from an oil inlet 22 in the direction of an oil outlet 24.

Das Ölpumpengehäuse 10 weist zwei Öffnungen 26, 27 auf, aus denen die beiden Enden der Antriebswelle hervorstehen. Die Öffnung 26 ist durch einen Gehäusedeckel 28 verschlossen, wobei die Antriebswelle 14 in einem Lager 30 des Deckels 38 gleitgelagert ist und durch den Gehäusedeckel 28 hindurch ragt. Auf dem aus dem Gehäusedeckel 28 herausstehenden Ende 32 der Antriebswelle 14 ist ein Antriebselement 34 in Form eines Kettenrads angeordnet und drehfest mit der Antriebswelle 14 verbunden. Das Antriebselement 34 ist mit einer Motorabtriebswelle, beispielsweise über ein weiteres Zahnrad oder eine Kette, verbunden.The oil pump housing 10 has two openings 26, 27 from which protrude the two ends of the drive shaft. The opening 26 is closed by a housing cover 28, wherein the drive shaft 14 is slidably mounted in a bearing 30 of the lid 38 and projects through the housing cover 28 therethrough. On the protruding from the housing cover 28 end 32 of the drive shaft 14, a drive element 34 is arranged in the form of a sprocket and rotatably connected to the drive shaft 14. The drive element 34 is connected to a motor output shaft, for example via a further gear or a chain.

Die Ölpumpe 11 ist somit vollständig innerhalb des von dem Gehäusedeckel 28 verschlossenen Gehäuses 10 angeordnet.The oil pump 11 is thus arranged completely within the housing 10 closed by the housing cover 28.

Die Vakuumpumpe 13, bei der es sich insbesondere um eine Drehschieberpumpe handelt, ist im Wesentlichen innerhalb des topfförmigen Gehäuses 12, bei dem es sich vorzugsweise um ein Gehäuse aus Metallblech handelt, angeordnet. In der dargestellten Ausführungsform weist das Vakuumpumpengehäuse 2 keine Anschlüsse der Vakuumpumpe auf. Der Anschluss 36 (Fig. 1) für die Vakuumpumpe ist in dem ersten Gehäuse 10, d.h. in dem Ölpumpengehäuse angeordnet. Ein in dem Vakuumpumpengehäuse 12 angeordneter Förderraum 38 ist über einen Kanal 40 mit dem Auslass 36 verbunden.The vacuum pump 13, which is in particular a rotary vane pump, is arranged substantially inside the cup-shaped housing 12, which is preferably a housing made of sheet metal. In the illustrated embodiment, the vacuum pump housing 2 has no connections of the vacuum pump. The port 36 ( Fig. 1 ) for the vacuum pump is disposed in the first housing 10, that is, in the oil pump housing. A delivery chamber 38 arranged in the vacuum pump housing 12 is connected to the outlet 36 via a channel 40.

Das erste Gehäuse 10 weist eine Montagefläche 42 auf, die ggf. abgestuft sein kann. An der Montagefläche 42 ist das zweite Gehäuse 12 über Schrauben 44 befestigt. Da die Montagefläche 42 erfindungsgemäß über das zweite Gehäuse 12 radial hinausragt, kann das gesamte Modul über die verbleibende Montagefläche an oder in einem Kurbelwellengehäuse montiert werden. Bevorzugt ist die Montage in einem Kurbelwellengehäuse, wobei das zweite Pumpengehäuse 12 in eine in dem Kurbelwellengehäuse vorgesehene Ausnehmung gesteckt wird, so dass die verbleibende Montagefläche 42 an einer entsprechenden innerhalb des Kurbelwellengehäuses vorgesehenen Montagefläche anliegt. Das Modul kann sodann beispielsweise mittels Schrauben, die durch Öffnungen 46 (Fig. 1) gesteckt werden, montiert werden, indem die Schrauben in Gewinde, das an der in dem Kurbelwellengehäuse vorgesehenen Montagefläche angeordnet ist, befestigt werden,The first housing 10 has a mounting surface 42, which may be stepped if necessary. On the mounting surface 42, the second housing 12 is secured by screws 44. Since the mounting surface 42 according to the invention projects radially beyond the second housing 12, the entire module can be mounted on the remaining mounting surface on or in a crankcase. Preferably, the assembly is in a crankcase, wherein the second pump housing 12 is inserted into a recess provided in the crankshaft housing recess, so that the remaining mounting surface 42 abuts against a corresponding provided within the crankshaft housing mounting surface. The module can then, for example, by means of screws which through openings 46 ( Fig. 1 ) are mounted by fastening the screws into threads disposed on the mounting surface provided in the crankcase,

Ein weiterer wesentlicher Aspekt der Erfindung besteht darin, dass in der Montagefläche 42 die Anschlüsse 24 und 36 für die Ölpumpe 11 bzw. die Vakuumpumpe 13 vorgesehen sind. Dies hat den Vorteil, dass bei Montage des Moduls gleichzeitig die Anschlüsse fluidisch verbunden werden.Another essential aspect of the invention is that in the mounting surface 42, the terminals 24 and 36 are provided for the oil pump 11 and the vacuum pump 13. This has the advantage that at the same time the connections are fluidly connected when mounting the module.

Um die Montage des Moduls, insbesondere innerhalb des Kurbelwellengehäuses, zu vereinfachen, ist die Montagefläche 42 vorzugsweise radial zur Achse 48 der Antriebswelle 14 ausgerichtet.In order to simplify the assembly of the module, in particular within the crankshaft housing, the mounting surface 42 is preferably aligned radially to the axis 48 of the drive shaft 14.

Wie insbesondere aus Fig. 3 ersichtlich ist, stellt die Montagefläche 42 ferner die Trennebene zwischen den beiden Gehäusehälften 10, 12 bzw. dem ersten Gehäuse 10 und dem zweiten Gehäuse 12 dar.As in particular from Fig. 3 it can be seen, the mounting surface 42 further represents the parting plane between the two housing halves 10, 12 and the first housing 10 and the second housing 12.

Anstelle des Vorsehens eines insbesondere aus Metallblech hergestellten topfförmigen Gehäuses 18 ist es auch möglich, ein gemeinsames Gehäuse für beide Pumpen vorzusehen. Dieses weist sodann vorzugsweise auf der in Fig. 3 linken Seite einen zweiten Deckel auf.Instead of providing a cup-shaped housing 18, in particular made of sheet metal, it is also possible to use a common housing for provide both pumps. This then preferably points to the in Fig. 3 left side on a second cover.

Claims (7)

  1. Oil pump and vacuum pump module for internal combustion engines, comprising
    an oil pump (11) with a rotating oil conveying element (16), and
    a vacuum pump (13) with a rotating air conveying element (18), wherein
    the air conveying element (18) of the vacuum pump (13) and the oil conveying element (16) of the oil pump (11) are connected with a common drive shaft (14),
    a first pump housing (10) comprises a mounting surface (42) extending radially with respect to the drive shaft (48), and
    the first housing (10) is connected with a second pump housing (12), in particular the vacuum pump housing, said second pump housing (12) being connected with the first pump housing (10) in particular via the mounting surface (42),
    characterized in that
    the mounting surface (42) extends radially beyond the second pump housing such that it is suited for mounting the module to or in an engine case of the internal combustion engine.
  2. Oil pump and vacuum pump module of claim 1, characterized in that the drive shaft (14) protrudes from two mutually opposite openings (26, 27) of the first pump housing (10), in particular of the oil pump housing, one end (32) being connected with a drive element (34) and the other end being connected with one of the conveying elements (16, 18), especially the air conveying element (18).
  3. Oil pump and vacuum pump module of claim 2, characterized in that the first pump housing (10) is closed at the drive-side end (32) by means of a housing cover (38).
  4. Oil pump and vacuum pump module of one of claims 1 to 3, characterized in that the mounting surface (42) forms the separation plane between the two housings (10, 12).
  5. Oil pump and vacuum pump module of one of claims 1 to 4, characterized in that the second housing (12) is of pot-shaped design and is preferably made from sheet metal.
  6. Oil pump and vacuum pump module of one of claims 1 to 5, characterized in that the second pump housing (12) is open only towards the mounting surface (42).
  7. Oil pump and vacuum pump module of one of claims 1 to 6, characterized in that the pump connections (36) for the pump arranged in the second pump housing (12), especially the vacuum pump, are provided at the first pump housing (10).
EP07704538A 2006-02-18 2007-02-13 Oil-pump and vacuum-pump module Active EP1989448B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200620002823 DE202006002823U1 (en) 2006-02-18 2006-02-18 Oil and vacuum pump module for e.g. diesel internal combustion engine, has central common drive shaft, oil and vacuum pump bodies, and oil pump pressure connection and vacuum pump connection on mounting surface in crankcase of engine
DE200610029553 DE102006029553A1 (en) 2006-06-26 2006-06-26 Oil pump and vacuum pump module for internal combustion engines, has oil and vacuum pump and air conveying element of vacuum pump and oil conveying element of oil pump are connected with common drive shaft
PCT/EP2007/051362 WO2007093581A1 (en) 2006-02-18 2007-02-13 Oil-pump and vacuum-pump module

Publications (2)

Publication Number Publication Date
EP1989448A1 EP1989448A1 (en) 2008-11-12
EP1989448B1 true EP1989448B1 (en) 2009-12-09

Family

ID=37997622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07704538A Active EP1989448B1 (en) 2006-02-18 2007-02-13 Oil-pump and vacuum-pump module

Country Status (5)

Country Link
EP (1) EP1989448B1 (en)
AT (1) ATE451553T1 (en)
DE (1) DE502007002263D1 (en)
ES (1) ES2336617T3 (en)
WO (1) WO2007093581A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012103888A1 (en) * 2012-05-03 2013-11-21 Zf Lenksysteme Gmbh Displacement pump for conveying of pressurizing agent to consumer, particularly vane-type or roller pump for transmission of motor vehicle, has pump packet with rotor, cam ring and multiple working slides
DE102012217071A1 (en) * 2012-09-21 2014-03-27 Robert Bosch Gmbh pump assembly
CN110291302B (en) 2017-01-30 2021-08-17 利滕斯汽车合伙公司 Clutch type vacuum pump system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8105492U1 (en) * 1981-02-27 1981-08-20 Elektro-Mechanik Gmbh, 5963 Wenden PNEUMOHYDRAULIC SUPPLY UNIT WITH A POWER-GENERATING ENGINE
US4497618A (en) * 1983-09-12 1985-02-05 General Motors Corporation Combined vacuum pump and power steering pump assembly
JPS61222857A (en) * 1985-03-28 1986-10-03 Nippon Denso Co Ltd Power steering pump provided with vacuum pump
US20070059187A1 (en) * 2003-04-16 2007-03-15 O.M.P. Officine Mazzocco Pagnoni S.R.L. Oil and vacuum pumps group for a motor vehicle engine

Also Published As

Publication number Publication date
ES2336617T3 (en) 2010-04-14
EP1989448A1 (en) 2008-11-12
DE502007002263D1 (en) 2010-01-21
ATE451553T1 (en) 2009-12-15
WO2007093581A1 (en) 2007-08-23

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