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EP2365190B1 - Bearing housing cover for a charging device - Google Patents

Bearing housing cover for a charging device Download PDF

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Publication number
EP2365190B1
EP2365190B1 EP11153225.5A EP11153225A EP2365190B1 EP 2365190 B1 EP2365190 B1 EP 2365190B1 EP 11153225 A EP11153225 A EP 11153225A EP 2365190 B1 EP2365190 B1 EP 2365190B1
Authority
EP
European Patent Office
Prior art keywords
bearing housing
housing cover
region
cover
bearing
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.)
Not-in-force
Application number
EP11153225.5A
Other languages
German (de)
French (fr)
Other versions
EP2365190A2 (en
EP2365190A3 (en
Inventor
Max Fiedler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BMTS Technology GmbH and Co KG
Original Assignee
Bosch Mahle Turbo Systems GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102010010573A external-priority patent/DE102010010573A1/en
Priority claimed from DE102010025575A external-priority patent/DE102010025575A1/en
Application filed by Bosch Mahle Turbo Systems GmbH and Co KG filed Critical Bosch Mahle Turbo Systems GmbH and Co KG
Publication of EP2365190A2 publication Critical patent/EP2365190A2/en
Publication of EP2365190A3 publication Critical patent/EP2365190A3/en
Application granted granted Critical
Publication of EP2365190B1 publication Critical patent/EP2365190B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/24—Manufacture essentially without removing material by extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/25—Manufacture essentially without removing material by forging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/26—Manufacture essentially without removing material by rolling

Definitions

  • the present invention relates to a bearing housing cover for a bearing housing of a charging device, in particular for an exhaust gas turbocharger of a motor vehicle. Furthermore, the invention also relates to a bearing housing with such a bearing housing cover and a charging device, which has such a bearing housing cover or such a bearing housing. In addition, the invention relates to a method for producing a, in particular compressor side arranged, bearing housing cover for closing a bearing housing of a charging device.
  • WO 2010/002717 A2 is a generic bearing housing for an exhaust gas turbocharger known.
  • the bearing housing has an opening which can be closed with a bearing housing cover.
  • the compressor housing interior can be delimited or gas-tight against the bearing housing interior by the bearing housing cover.
  • the bearing housing cover can be fixed with a bayonet lock on the bearing housing.
  • the bearing housing cover is further designed such that it supports the shaft sealing rings or piston rings in the installed position.
  • a bearing housing cover for a bearing housing of a charging device wherein the position housing cover is formed of metal and manufactured by means of a forming process.
  • a bearing housing cover is currently with a circumferential annular groove for a sealing body, such. As an O-ring executed.
  • the production of the bearing housing cover thus requires several processing steps and is among other things therefore only constructively complex and expensive to accomplish.
  • the present invention now addresses the problem of providing for a bearing housing cover and a bearing housing an improved or at least one alternative embodiment, which is characterized in particular by a cheap and simplified manufacturing method.
  • the invention is based on the general idea to form the bearing housing cover by means of a forming process as a sheet metal forming component. If the bearing housing cover is produced as a sheet-metal forming component by a forming process, subsequent processing is considerably less complicated or, if appropriate, even completely avoided. As a result, the production of such a bearing housing cover is cheaper and less expensive, so that both process and material costs can be saved.
  • the bearing housing cover has at least one cylindrical fixing region for radially fixing at least one piston ring, or a shaft sealing ring or a bearing ring and is provided with a cylindrical connecting portion for connecting the bearing housing cover to the bearing housing.
  • the connecting region has at least one radial groove for receiving a, in particular bearing housing side, spring for forming a Groove / spring connecting means.
  • the bearing housing cover is also made in one piece from a metal sheet.
  • the invention also relates to a method for producing a bearing housing cover arranged in particular on the compressor side according to claim 1 for closing a bearing housing of a charging device, in which at least a partial region of the bearing housing cover is produced from at least one metal sheet by means of a forming process.
  • a forming process Preferably not only the component geometry are formed by the forming process, but also z. As grooves, holes, fits or the like. Due to the simultaneous formation of various functional elements of the bearing housing cover also a required post-processing of the bearing housing cover is further reduced.
  • Hydroforming deep-drawing, forging, particularly preferably swaging and / or rolling, are preferably used as forming processes.
  • Umform compiler the collar pulling, the everting and / or bending can be used.
  • machining methods such as. B. drilling, are used.
  • a separation process such as. As the punching, cutting and / or shear cutting applied.
  • a massive forming process such. B. use the rolling, extrusion, drawing and / or upsetting. Particularly preferred is the use of several of these previously enumerated methods, as well as other common processing methods for metal sheets.
  • a bearing housing cover 1 has at least one cylindrical fixing region 2 and a disk-like covering region 3. With the cylindrical fixing region 2, at least one piston ring 4, 4 'or a shaft sealing ring or a bearing ring can be fixed in the radial direction.
  • a charging device not shown in the figures generally has a turbine housing on the turbine side, in the interior of which a turbine wheel is arranged and on the compressor side a compressor housing, in the interior of which a compressor wheel is positioned.
  • a bearing housing is arranged, which rotatably supports the shaft of the rotor, which includes the turbine wheel, the compressor wheel and the shaft.
  • the bearing housing is closed on the turbine side and / or compressor side with a bearing housing cover.
  • the bearing housing cover is arranged on the compressor side.
  • the bearing housing cover 1 is oriented with its fixing area 2 to the turbine side or compressor side 6, while the cover 3 is oriented to the bearing housing side 5.
  • the cover 3 is fastened to the bearing housing, also not shown. It can be used as fasteners screws, rivets, press-in bolts, or the like. Likewise, it is conceivable that the covering area 3 is glued to the bearing housing, welded or connected by brazing, caulking, flanging or by Umkragen. Furthermore, the covering region 3 can also have webs, by means of which the covering region 3, 7 can be connected to the bearing housing in the manner of a bayonet closure. Likewise, an attachment of the bearing housing cover 1 to the bearing housing by pressing an edge region 7 of the cover 3 in a bearing housing side groove conceivable.
  • the bearing housing cover 1 having a cylindrical connecting portion 8.
  • the bearing housing cover 1 By means of the connecting region 8, the bearing housing cover 1 can be connected to the bearing housing.
  • the connection area 8 and the fixing area 2 can be made with respect to the cover area 3, as in FIG Fig. 2 shown to be arranged on different sides, so that the fixing region 2 is oriented toward the turbine side or compressor side 6, while the connection region 8 is oriented to the bearing housing side 5.
  • the fixing portion 2 and the connecting portion 8 are oriented toward the bearing case side 6.
  • the bearing housing cover 1 may have a cylindrical fixing area 2 and / or a perforated disk-like covering area 3 and / or a cylindrical connecting area 8.
  • the bearing housing cover 1 according to the invention is formed from a metal sheet.
  • a metal sheet As the material for such a metal sheet all formable steel grades can be used, including bake-hardening sheets. Preferably, aluminum or an aluminum alloy is used as the material. Likewise, the use of investment casting is preferred. However, other metallic materials which are suitable for a forming process can also be used.
  • bake-hardening sheets is meant sheets of a metallic material which undergoes an increase in strength by heating to temperatures of about 200 ° C. In this case, the bake-hardening sheet is formed before heating and hardened by baking (bake) after the forming process.
  • a metal sheet in tailored-blank design is understood to mean a metal sheet which is composed of different material grades and / or sheet thicknesses. This prefabricated semi-finished is then z. B. formed by deep drawing or by other forming processes to the desired bearing housing cover 1. If the bearing housing cover 1 is designed in the manner of a tailored blank construction, then the bearing housing cover 1 can be formed in the correspondingly stressed sections according to the respective loads in these sections. Thus, it is conceivable that the bearing housing cover 1 also performs the function of a heat shield for the bearing housing. In this case, these sections, which are exposed to a high temperature, can be formed from correspondingly temperature-resistant material by means of the tailored-blank construction.
  • the bearing housing cover 1 according to the invention is integrally formed from a metal sheet. But it is also a multi-part design of the bearing housing cover 1 is possible, wherein the individual portions are connected to each other by a connection method after forming the individual sections.
  • a partial area may be, for example, the fixing area 2 and / or the covering area 3 and / or the connecting area 8.
  • a bearing housing cover 1 has in the cover 3 a profiling 9, which is formed in the cover 3 as an annular groove 10.
  • the annular groove 10 extends to a rotation axis 11 in the Fig. 4 not shown shaft in the cover 3 in a constant radial distance from the axis of rotation 11.
  • Such a profiling 9 is used as a radially effective clamping element for bracing the bearing housing cover 1 in the bearing housing.
  • a bearing housing cover 1 such.
  • Such a profiling 9 can also be wave-shaped, wherein the waveform is radial.
  • the profiling 9 forms, together with the connecting region 8, a connecting device 12, by means of which the bearing housing cover 1 can be fastened to the bearing housing.
  • a further embodiment of the connecting device 12 is shown.
  • a radial groove 13 is formed in the connecting region 8 of the bearing housing cover 1 according to the invention.
  • a sealing element 14 can be used, so that the bearing housing cover 1 can be connected by means of the sealing element 14 with the bearing housing.
  • the bearing housing cover 1 is tightly connected to the bearing housing.
  • the sealing element 14 may be formed as a sealing ring, O-ring or the like.
  • the connecting device 12 is formed by the radial groove 13 and the sealing element 14, which are both arranged in the connecting region 8.
  • a spring formed on the bearing housing can engage in the radial groove 13 of the bearing housing cover 1, provided that this is in the installed position.
  • no sealing element 14 in the radial groove Arranged and / or the connecting device 12 is formed in the manner of a tongue and groove connecting device, wherein the connecting device 12 in this case has a arranged in the connecting portion 8 radial groove and a bearing housing side spring.
  • the radial groove 13 is provided with a radially oriented opening.
  • the connecting device 12 can also be designed as a screw connection device or bayonet connection device.
  • an external thread can be arranged in the connection region 8, with which the connection region 8 can be screwed into an internal thread formed on the bearing housing.
  • a bayonet connection means interrupted webs or bulges are formed on the bearing housing cover 1 in the connecting region 8 in the circumferential direction, so that the connecting portion 8 with its webs or bulges in the manner of a bayonet lock with the bearing housing is connectable.
  • a radial groove 13 is conceivable, which is interrupted by arranged in the connecting region 8 longitudinal grooves.
  • webs or bulges of the bearing housing portion can be inserted into the longitudinal grooves and introduced by turning into the radial groove 13.
  • the bearing housing cover 1 with the bearing housing in the manner of a bayonet lock can be fixed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Description

Die vorliegende Erfindung betrifft einen Lagergehäusedeckel für ein Lagergehäuse einer Ladeeinrichtung, insbesondere für einen Abgasturbolader eines Kraftfahrzeugs. Des Weiteren ist ebenfalls Gegenstand der Erfindung ein Lagergehäuse mit einem derartigen Lagergehäusedeckel sowie eine Ladeeinrichtung, die einen derartigen Lagergehäusedeckel oder ein derartiges Lagergehäuse aufweist. Zudem betrifft die Erfindung ein Verfahren zur Herstellung eines, insbesondere verdichterseitig angeordneten, Lagergehäusedeckels zum Verschließen eines Lagergehäuses einer Ladeeinrichtung.The present invention relates to a bearing housing cover for a bearing housing of a charging device, in particular for an exhaust gas turbocharger of a motor vehicle. Furthermore, the invention also relates to a bearing housing with such a bearing housing cover and a charging device, which has such a bearing housing cover or such a bearing housing. In addition, the invention relates to a method for producing a, in particular compressor side arranged, bearing housing cover for closing a bearing housing of a charging device.

Aus der WO 2010/002717 A2 ist ein gattungsgemäßes Lagergehäuse für einen Abgasturbolader bekannt. Verdichterseitig weist das Lagergehäuse eine Öffnung auf, die mit einem Lagergehäusedeckel verschlossen werden kann. Somit kann durch den Lagergehäusedeckel der Verdichtergehäuseinnenraum gegen den Lagergehäuseinnenraum abgegrenzt bzw. gasdicht verschlossen werden. Der Lagergehäusedeckel ist mit einem Bajonettverschluss an dem Lagergehäuse fixierbar. Der Lagergehäusedeckel ist des Weiteren derart ausgebildet, dass er in Einbaulage die Wellendichtringe bzw. Kolbenringe lagert.From the WO 2010/002717 A2 is a generic bearing housing for an exhaust gas turbocharger known. Compressor side, the bearing housing has an opening which can be closed with a bearing housing cover. Thus, the compressor housing interior can be delimited or gas-tight against the bearing housing interior by the bearing housing cover. The bearing housing cover can be fixed with a bayonet lock on the bearing housing. The bearing housing cover is further designed such that it supports the shaft sealing rings or piston rings in the installed position.

Aus der US 2,646,210 A ist ein Lagergehäusedeckel für ein Lagergehäuse einer Ladeinrichtung bekannt, wobei der Lagegehäusedeckel aus Metall ausgebildet und mittels eines Umformverfahrens hergestellt ist.From the US 2,646,210 A For example, a bearing housing cover for a bearing housing of a charging device is known, wherein the position housing cover is formed of metal and manufactured by means of a forming process.

Aus der US 4,786,238 A ist ebenfalls ein Lagergehäusedeckel-bekannt. Aus der DE 10 2004 031 986 A1 ist ein Leitschaufelträger bzw. ein zugehöriges Lagergehäuse bekannt. Des Weiteren sind aus der DE 10 2008 000 855 A1 , der JP 11082037 und der US 4,265,456 Abgasturbolader bekannt.From the US 4,786,238 A is also a bearing housing cover known. From the DE 10 2004 031 986 A1 a vane carrier or an associated bearing housing is known. Furthermore, from the DE 10 2008 000 855 A1 , of the JP 11082037 and the US 4,265,456 Exhaust gas turbocharger known.

Üblicherweise wird ein Lagergehäusedeckel derzeit mit einer umlaufenden Ringnut für einen Dichtkörper, wie z. B. einen O-Ring, ausgeführt. Die Herstellung des Lagergehäusedeckels benötigt damit mehrere Bearbeitungsschritte und ist unter anderem deshalb nur konstruktiv aufwändig und teuer zu bewerkstelligen.Usually, a bearing housing cover is currently with a circumferential annular groove for a sealing body, such. As an O-ring executed. The production of the bearing housing cover thus requires several processing steps and is among other things therefore only constructively complex and expensive to accomplish.

Die vorliegende Erfindung beschäftigt sich nun mit dem Problem, für einen Lagergehäusedeckel und ein Lagergehäuse eine verbesserte oder zumindest eine alternative Ausführungsform anzugeben, die sich insbesondere durch eine billige und vereinfachte Herstellungsweise auszeichnet.The present invention now addresses the problem of providing for a bearing housing cover and a bearing housing an improved or at least one alternative embodiment, which is characterized in particular by a cheap and simplified manufacturing method.

Erfindungsgemäß wird dieses Problem durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.According to the invention, this problem is solved by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.

Die Erfindung beruht auf dem allgemeinen Gedanken, den Lagergehäusedeckel mittels eines Umformverfahrens als Metallblech-Umformbauteil auszubilden. Wird der Lagergehäusedeckel als Metallblech-Umformbauteil durch ein Umformverfahren hergestellt, so ist eine nachfolgende Bearbeitung deutlich weniger aufwändig oder kann günstigsten Falls sogar gänzlich vermieden werden. Dadurch ist die Herstellung eines derartigen Lagergehäusedeckels günstiger und weniger aufwändig, sodass sowohl Prozess- als auch Materialkosten eingespart werden können. Gleichfalls weist der Lagergehäusedeckel zumindest einen zylindrischen Fixierbereich zum radialen Fixieren zumindest eines Kolbenrings, bzw. eines Wellendichtrings oder ein Lagerrings auf und ist mit einem zylindrischen Verbindungsbereich zum Verbinden des Lagergehäusedeckels mit dem Lagergehäuse ausgestattet ist. Der Verbindungsbereich besitzt zumindest eine Radialnut zu Aufnahme einer, insbesondere lagergehäuseseitigen, Feder zur Ausbildung einer Nut/Feder-Verbindungseinrichtung. Der Lagergehäusedeckel ist zudem einstückig aus einem Metallblech hergestellt.The invention is based on the general idea to form the bearing housing cover by means of a forming process as a sheet metal forming component. If the bearing housing cover is produced as a sheet-metal forming component by a forming process, subsequent processing is considerably less complicated or, if appropriate, even completely avoided. As a result, the production of such a bearing housing cover is cheaper and less expensive, so that both process and material costs can be saved. Likewise, the bearing housing cover has at least one cylindrical fixing region for radially fixing at least one piston ring, or a shaft sealing ring or a bearing ring and is provided with a cylindrical connecting portion for connecting the bearing housing cover to the bearing housing. The connecting region has at least one radial groove for receiving a, in particular bearing housing side, spring for forming a Groove / spring connecting means. The bearing housing cover is also made in one piece from a metal sheet.

Des Weiteren ist ebenfalls Gegenstand der Erfindung ein Verfahren zur Herstellung eines, insbesondere verdichterseitig angeordneten, Lagergehäusedeckels gemäß Anspruch 1 zum Verschließen eines Lagergehäuses einer Ladeeinrichtung, bei dem zumindest ein Teilbereich des Lagergehäusedeckels aus zumindest einem Metallblech mittels eines Umformverfahrens hergestellt wird. Bevorzugt werden durch das Umformverfahren nicht nur die Bauteilgeometrie ausgebildet, sondern auch z. B. Nuten, Bohrungen, Passungen oder dergleichen. Aufgrund der gleichzeitigen Ausbildung verschiedenster Funktionselemente des Lagergehäusedeckels ist zudem eine erforderliche Nachbearbeitung des Lagergehäusedeckels weiter reduzierbar.The invention also relates to a method for producing a bearing housing cover arranged in particular on the compressor side according to claim 1 for closing a bearing housing of a charging device, in which at least a partial region of the bearing housing cover is produced from at least one metal sheet by means of a forming process. Preferably not only the component geometry are formed by the forming process, but also z. As grooves, holes, fits or the like. Due to the simultaneous formation of various functional elements of the bearing housing cover also a required post-processing of the bearing housing cover is further reduced.

Als Umformverfahren wird bevorzugt das Innenhochdruck-Umformen (IHU), das Tiefziehen, das Schmieden, besonders bevorzugt das Gesenkschmieden und/oder das Rollieren angewendet. Ebenso können als Umformverfahren das Kragenziehen, das Stülpen und/oder das Biegen zum Einsatz kommen. Zusätzlich dazu können auch Fertigungsverfahren und besonders bevorzugt spanabhebende Verfahren, wie z. B. das Bohren, zum Einsatz kommen. Bevorzugt wird dabei zusätzlich auch ein Trennverfahren, wie z. B. das Stanzen, das Schneiden und/oder das Scherschneiden angewendet. Ebenso ist es vorteilhaft ein Massivumformverfahren, wie z. B. das Walzen, das Strangpressen, das Ziehen und/oder das Stauchen einzusetzen. Besonders bevorzugt ist die Anwendung mehrerer dieser vorhergehend aufgezählten Verfahren, sowie anderer gängiger Bearbeitungsverfahren für Metallbleche.Hydroforming (IHU), deep-drawing, forging, particularly preferably swaging and / or rolling, are preferably used as forming processes. Likewise, as Umformverfahren the collar pulling, the everting and / or bending can be used. In addition to manufacturing methods and particularly preferably machining methods, such. B. drilling, are used. In addition, a separation process, such as. As the punching, cutting and / or shear cutting applied. It is also advantageous a massive forming process, such. B. use the rolling, extrusion, drawing and / or upsetting. Particularly preferred is the use of several of these previously enumerated methods, as well as other common processing methods for metal sheets.

Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

Es zeigen, jeweils schematisch:

Fig. 1
einen nicht unter die Erfindung fallenden Lagergehäusedeckel mit einem zylindrischen Fixierbereich und einem scheibenartigen Abdeckbereich,
Fig. 2
den Lagergehäusedeckel mit einem zusätzlichen zylindrischen Verbindungsbereich,
Fig. 3
den Lagergehäusedeckel mit bzgl. des Abdeckbereiches gleichseitig orientiertem Fixierbereich und Verbindungsbereich,
Fig. 4
den Lagergehäusedeckel mit einer im Abdeckbereich ausgebildeten Ringnut,
Fig. 5
einen erfindungsgemäßen Lagergehäusedeckel mit einer in dem Verbindungsbereich ausgebildeten Radialnut.
It show, each schematically:
Fig. 1
a bearing housing cover not covered by the invention having a cylindrical fixing area and a disc-like covering area,
Fig. 2
the bearing housing cover with an additional cylindrical connection area,
Fig. 3
the bearing housing cover with respect to the cover area on the same side oriented fixing area and connection area,
Fig. 4
the bearing housing cover with an annular groove formed in the cover region,
Fig. 5
a bearing housing cover according to the invention with a radial groove formed in the connecting region.

Gemäß der Fig. 1, weist ein Lagergehäusedeckel 1 zumindest einen zylindrischen Fixierbereich 2 und einen scheibenartigen Abdeckbereich 3 auf. Mit dem zylindrischen Fixierbereich 2 kann zumindest ein Kolbenring 4,4' bzw. ein Wellendichtring oder ein Lagerring, in radialer Richtung fixiert werden.According to the Fig. 1 , a bearing housing cover 1 has at least one cylindrical fixing region 2 and a disk-like covering region 3. With the cylindrical fixing region 2, at least one piston ring 4, 4 'or a shaft sealing ring or a bearing ring can be fixed in the radial direction.

Eine in den Figuren nicht gezeigte Ladeeinrichtung weist in der Regel turbinenseitig ein Turbinengehäuse auf, in dessen Innenraum ein Turbinenrad angeordnet ist und verdichterseitig ein Verdichtergehäuse, in dessen Innenraum ein Verdichterrad positioniert ist. Zwischen dem Turbinen- und dem Verdichtergehäuse ist ein Lagergehäuse angeordnet, das die Welle des Rotors, der das Turbinenrad, das Verdichterrad und die Welle umfasst, rotationsbeweglich lagert. Um einen Lagergehäuseinnenraum gegen die in dem Turbinengehäuse bzw. in dem Verdichtergehäuse strömenden Gase zu schützen, wird das Lagergehäuse turbinenseitig und/oder verdichterseitig mit einem Lagergehäusedeckel verschlossen. Bevorzugt ist dabei der Lagergehäusedeckel verdichterseitig angeordnet.A charging device not shown in the figures generally has a turbine housing on the turbine side, in the interior of which a turbine wheel is arranged and on the compressor side a compressor housing, in the interior of which a compressor wheel is positioned. Between the turbine and the compressor housing, a bearing housing is arranged, which rotatably supports the shaft of the rotor, which includes the turbine wheel, the compressor wheel and the shaft. In order to protect a bearing housing interior against the gases flowing in the turbine housing or in the compressor housing, the bearing housing is closed on the turbine side and / or compressor side with a bearing housing cover. Preferably, the bearing housing cover is arranged on the compressor side.

Wie in Fig. 1 gezeigt, ist der Lagergehäusedeckel 1 mit seinem Fixierbereich 2 zur Turbinenseite oder Verdichterseite 6 orientiert, während der Abdeckbereich 3 zu der Lagergehäuseseite 5 orientiert ist.As in Fig. 1 is shown, the bearing housing cover 1 is oriented with its fixing area 2 to the turbine side or compressor side 6, while the cover 3 is oriented to the bearing housing side 5.

Mittels in Fig. 1 nicht gezeigter Befestigungselemente ist der Abdeckbereich 3 an dem ebenfalls nicht gezeigten Lagergehäuse befestigbar. Dabei können als Befestigungselemente Schrauben, Nieten, Einpressbolzen, oder dergleichen verwendet werden. Ebenso ist es denkbar, dass der Abdeckbereich 3 mit dem Lagergehäuse verklebt, verschweißt oder durch Hartlöten, Verstemmen, Bördeln oder durch Umkragen verbunden ist. Des Weiteren kann der Abdeckbereich 3 auch Stege aufweisen, mittels der der Abdeckbereich 3, 7 in Art eines Bajonettverschlusses mit dem Lagergehäuse verbunden werden kann. Ebenso ist eine Befestigung des Lagergehäusedeckels 1 an dem Lagergehäuse durch Einpressen eines Randbereiches 7 des Abdeckbereiches 3 in eine lagergehäuseseitige Nut denkbar.By means of in Fig. 1 not shown fasteners, the cover 3 is fastened to the bearing housing, also not shown. It can be used as fasteners screws, rivets, press-in bolts, or the like. Likewise, it is conceivable that the covering area 3 is glued to the bearing housing, welded or connected by brazing, caulking, flanging or by Umkragen. Furthermore, the covering region 3 can also have webs, by means of which the covering region 3, 7 can be connected to the bearing housing in the manner of a bayonet closure. Likewise, an attachment of the bearing housing cover 1 to the bearing housing by pressing an edge region 7 of the cover 3 in a bearing housing side groove conceivable.

Des Weiteren kann, wie in Fig. 2 dargestellt ist, der Lagergehäusedeckel 1 einen zylindrischen Verbindungsbereich 8 aufweisen. Mittels des Verbindungsbereiches 8 ist der Lagergehäusedeckel 1 mit dem Lagergehäuse verbindbar. Dabei kann der Verbindungsbereich 8 und der Fixierbereich 2 bzgl. des Abdeckbereiches 3, wie in Fig. 2 gezeigt, auf unterschiedlichen Seiten angeordnet sein, sodass der Fixierbereich 2 zur Turbinenseite oder Verdichterseite 6 hin orientiert ist, während der Verbindungsbereich 8 zur Lagergehäuseseite 5 orientiert ist.Furthermore, as in Fig. 2 is shown, the bearing housing cover 1 having a cylindrical connecting portion 8. By means of the connecting region 8, the bearing housing cover 1 can be connected to the bearing housing. In this case, the connection area 8 and the fixing area 2 can be made with respect to the cover area 3, as in FIG Fig. 2 shown to be arranged on different sides, so that the fixing region 2 is oriented toward the turbine side or compressor side 6, while the connection region 8 is oriented to the bearing housing side 5.

Gemäß Fig. 3 ist jedoch auch eine andere Anordnung des Fixierbereichs 2 und des Verbindungsbereichs 3 möglich. In dieser Ausführungsform ist der Fixierbereich 2 und der Verbindungsbereich 8 zu der Lagergehäuseseite 6 hin orientiert. Somit kann der Lagergehäusedeckel 1 einen zylindrischen Fixierbereich 2 und/oder einen lochscheibenartigen Abdeckbereich 3 und/oder einen zylindrischen Verbindungsbereich 8 aufweisen.According to Fig. 3 However, another arrangement of the fixing region 2 and the connection region 3 is possible. In this embodiment, the fixing portion 2 and the connecting portion 8 are oriented toward the bearing case side 6. Thus, the bearing housing cover 1 may have a cylindrical fixing area 2 and / or a perforated disk-like covering area 3 and / or a cylindrical connecting area 8.

Der erfindungsgemäße Lagergehäusedeckel 1 ist aus einem Metallblech ausgebildet. Als Material für ein derartiges Metallblech können alle umformbaren Stahlsorten herangezogen werden, so auch bake-hardening-Bleche. Bevorzugt wird Aluminium oder eine Aluminiumlegierung als Material verwendet. Ebenso ist die Verwendung von Feingussblechen bevorzugt. Es können aber auch andere metallische Materialien, die für einen Umformprozess geeignet sind, verwendet werden. Unter bake-hardening-Blechen versteht man Bleche aus einem metallischen Material, das eine Festigungssteigerung durch Erwärmen auf Temperaturen um ca. 200°C erfährt. Dabei wird das bake-hardening-Blech vor der Erwärmung geformt und nach dem Umformverfahren durch Backen (bake) verfestigt (hardening).The bearing housing cover 1 according to the invention is formed from a metal sheet. As the material for such a metal sheet all formable steel grades can be used, including bake-hardening sheets. Preferably, aluminum or an aluminum alloy is used as the material. Likewise, the use of investment casting is preferred. However, other metallic materials which are suitable for a forming process can also be used. By bake-hardening sheets is meant sheets of a metallic material which undergoes an increase in strength by heating to temperatures of about 200 ° C. In this case, the bake-hardening sheet is formed before heating and hardened by baking (bake) after the forming process.

Besonders bevorzugt werden Metallbleche verwendet, die in Art einer Tailored-Blank-Bauweise ausgebildet sind. Unter einem Metallblech in Tailored-Blank-Bauweise versteht man ein Metallblech, das aus verschiedenen Werkstoffgüten und/oder Blechdicken zusammengesetzt ist. Dieses vorgefertigte Halbzeug wird anschließend z. B. durch Tiefziehen oder durch andere Umformverfahren zu dem gewünschten Lagergehäusedeckel 1 geformt. Ist der Lagergehäusedeckel 1 in Art einer tailored-blank-Bauweise ausgebildet, so kann der Lagergehäusedeckel 1 in den entsprechend beanspruchten Abschnitten gemäß den jeweiligen Belastungen in diesen Abschnitten ausgebildet sein. So ist es denkbar, dass der Lagergehäusedeckel 1 auch die Funktion eines Hitzeschildes für das Lagergehäuse ausübt. In diesem Fall können mittels der Tailored-Blank-Bauweise eben diese Abschnitte, die einer hohen Temperatur ausgesetzt sind, aus dementsprechend temperaturbeständigem Material ausgebildet sein.Particularly preferred metal sheets are used, which are designed in the manner of a tailored-blank design. A metal sheet in tailored-blank design is understood to mean a metal sheet which is composed of different material grades and / or sheet thicknesses. This prefabricated semi-finished is then z. B. formed by deep drawing or by other forming processes to the desired bearing housing cover 1. If the bearing housing cover 1 is designed in the manner of a tailored blank construction, then the bearing housing cover 1 can be formed in the correspondingly stressed sections according to the respective loads in these sections. Thus, it is conceivable that the bearing housing cover 1 also performs the function of a heat shield for the bearing housing. In this case, these sections, which are exposed to a high temperature, can be formed from correspondingly temperature-resistant material by means of the tailored-blank construction.

Der erfindungsgemäße Lagergehäusedeckel 1 ist einstückig aus einem Metallblech ausgebildet. Es ist aber auch eine mehrteilige Ausbildung des Lagergehäusedeckels 1 möglich, wobei die einzelnen Teilbereiche miteinander durch ein Verbindungsverfahren nach dem Umformen der einzelnen Teilbereiche verbunden werden.The bearing housing cover 1 according to the invention is integrally formed from a metal sheet. But it is also a multi-part design of the bearing housing cover 1 is possible, wherein the individual portions are connected to each other by a connection method after forming the individual sections.

Ein Teilbereich kann beispielsweise der Fixierbereich 2 und/oder der Abdeckbereich 3 und/oder der Verbindungsbereich 8 sein.A partial area may be, for example, the fixing area 2 and / or the covering area 3 and / or the connecting area 8.

Die in Fig. 4 gezeigte Ausführungsform eines Lagergehäusedeckels 1 weist im Abdeckbereich 3 eine Profilierung 9 auf, die in dem Abdeckbereich 3 als Ringnut 10 ausgebildet ist. Die Ringnut 10 verläuft zu einer Rotationsachse 11 der in der Fig. 4 nicht dargestellten Welle in dem Abdeckbereich 3 in einem gleichbleibenden radialen Abstand zur Rotationsachse 11. Eine derartige Profilierung 9 wird als radial wirksames Spannelement zum Verspannen des Lagergehäusedeckels 1 im Lagergehäuse verwendet. Somit kann ein Lagergehäusedeckel 1, wie z. B. in Fig. 4 gezeigt, in das Lagergehäuse eingepresst werden und aufgrund des unter Spannung stehenden Spannelementes bzw. der Profilierung 9 in Art eines Presssitzes mit dem Lagergehäuse verbunden werden. In diesem Fall kann vorteilhaft auf eine Befestigung mittels Befestigungselemente, z. B. in dem Abdeckbereich 3, verzichtet werden.In the Fig. 4 shown embodiment of a bearing housing cover 1 has in the cover 3 a profiling 9, which is formed in the cover 3 as an annular groove 10. The annular groove 10 extends to a rotation axis 11 in the Fig. 4 not shown shaft in the cover 3 in a constant radial distance from the axis of rotation 11. Such a profiling 9 is used as a radially effective clamping element for bracing the bearing housing cover 1 in the bearing housing. Thus, a bearing housing cover 1, such. In Fig. 4 shown to be pressed into the bearing housing and connected in the manner of a press fit with the bearing housing due to the tensioning clamping element or the profiling 9. In this case can be advantageous to an attachment by means of fasteners, for. B. in the cover 3, be dispensed with.

Eine solche Profilierung 9 kann auch wellenförmig ausgebildet sein, wobei die Wellenform radial verläuft.Such a profiling 9 can also be wave-shaped, wherein the waveform is radial.

Somit bildet die Profilierung 9 zusammen mit dem Verbindungsbereich 8 eine Verbindungseinrichtung 12 aus, mittels der der Lagergehäusedeckel 1 an dem Lagergehäuse befestigt werden kann.Thus, the profiling 9 forms, together with the connecting region 8, a connecting device 12, by means of which the bearing housing cover 1 can be fastened to the bearing housing.

In Fig. 5 ist eine weitere Ausführungsform der Verbindungseinrichtung 12 dargestellt. Dabei ist in dem Verbindungsbereich 8 des erfindungsgemäßen Lagergehäusedeckels 1 eine Radialnut 13 ausgebildet. In diese Radialnut 13 ist ein Dichtelement 14 einsetzbar, sodass der Lagergehäusedeckel 1 mittels des Dichtelementes 14 mit dem Lagergehäuse verbunden werden kann. Im Falle der Verwendung eines Dichtelementes 14 ist zudem der Lagergehäusedeckel 1 dicht mit dem Lagergehäuse verbindbar. Das Dichtelement 14 kann als Dichtring, O-Ring oder dergleichen ausgebildet sein. In diesem Fall ist die Verbindungseinrichtung 12 durch die Radialnut 13 und das Dichtelement 14, die beide in dem Verbindungsbereich 8 angeordnet sind, ausgebildet.In Fig. 5 a further embodiment of the connecting device 12 is shown. In this case, a radial groove 13 is formed in the connecting region 8 of the bearing housing cover 1 according to the invention. In this radial groove 13, a sealing element 14 can be used, so that the bearing housing cover 1 can be connected by means of the sealing element 14 with the bearing housing. In the case of using a sealing element 14 also the bearing housing cover 1 is tightly connected to the bearing housing. The sealing element 14 may be formed as a sealing ring, O-ring or the like. In this case, the connecting device 12 is formed by the radial groove 13 and the sealing element 14, which are both arranged in the connecting region 8.

In einer weiteren Ausführungsform kann eine an dem Lagergehäuse ausgebildete Feder in die Radialnut 13 des Lagergehäusedeckels 1 eingreifen, sofern sich dieser in Einbaulage befindet. In diesem Fall ist ggf. kein Dichtelement 14 in der Radialnut 13 angeordnet und/oder ist die Verbindungseinrichtung 12 in Art einer Nut/Feder-Verbindungseinrichtung ausgebildet, wobei die Verbindungseinrichtung 12 in diesem Fall eine in dem Verbindungsbereich 8 angeordnete Radialnut aufweist und eine lagergehäuseseitige Feder.In a further embodiment, a spring formed on the bearing housing can engage in the radial groove 13 of the bearing housing cover 1, provided that this is in the installed position. In this case, if necessary, no sealing element 14 in the radial groove Arranged and / or the connecting device 12 is formed in the manner of a tongue and groove connecting device, wherein the connecting device 12 in this case has a arranged in the connecting portion 8 radial groove and a bearing housing side spring.

Im Gegensatz zur Ringnut 10, die eine in Längsrichtung zur Rotationsachse 11 orientierte Öffnung aufweist, ist die Radialnut 13 mit einer in Radialrichtung orientierten Öffnung ausgestattet. Die Verbindungseinrichtung 12 kann ebenfalls als Schraubverbindungseinrichtung bzw. Bajonettverbindungseinrichtung ausgebildet sein. Im Falle der Ausbildung als Schraubverbindungseinrichtung ist in dem Verbindungsbereich 8 ein Außengewinde anordenbar, mit dem der Verbindungsbereich 8 in ein an dem Lagergehäuse ausgebildetes Innengewinde einschraubbar ist. Im Falle der Ausbildung als Bajonettverbindungseinrichtung sind am Lagergehäusedeckel 1 im Verbindungsbereich 8 in Umfangsrichtung unterbrochene Stege bzw. Auswölbungen ausgebildet, sodass der Verbindungsbereich 8 mit seinen Stegen bzw. Auswölbungen in Art eines Bajonettverschlusses mit dem Lagergehäuse verbindbar ist. Ebenso ist die Ausbildung einer Radialnut 13 denkbar, die durch in dem Verbindungsbereich 8 angeordnete Längsnuten unterbrochen ist. In diesem Fall können Stege oder Auswölbungen des Lagergehäusebereiches in die Längsnuten eingeführt werden und durch Drehen in die Radialnut 13 eingeführt werden. Somit ist in diesem Fall ebenfalls der Lagergehäusedeckel 1 mit dem Lagergehäuse in Art eines Bajonettverschlusses fixierbar.In contrast to the annular groove 10, which has an opening oriented in the longitudinal direction to the axis of rotation 11, the radial groove 13 is provided with a radially oriented opening. The connecting device 12 can also be designed as a screw connection device or bayonet connection device. In the case of the design as a screw connection device, an external thread can be arranged in the connection region 8, with which the connection region 8 can be screwed into an internal thread formed on the bearing housing. In the case of training as a bayonet connection means interrupted webs or bulges are formed on the bearing housing cover 1 in the connecting region 8 in the circumferential direction, so that the connecting portion 8 with its webs or bulges in the manner of a bayonet lock with the bearing housing is connectable. Likewise, the formation of a radial groove 13 is conceivable, which is interrupted by arranged in the connecting region 8 longitudinal grooves. In this case, webs or bulges of the bearing housing portion can be inserted into the longitudinal grooves and introduced by turning into the radial groove 13. Thus, in this case also the bearing housing cover 1 with the bearing housing in the manner of a bayonet lock can be fixed.

Claims (8)

  1. Bearing housing cover for a bearing housing of a charging device, in particular for an exhaust gas turbocharger of a motor vehicle, the bearing housing cover (1) being made of metal and produced by means of a deformation process, in particular by means of hydroforming, deep drawing, forging or roller-burnishing, the bearing housing cover (1) having at least one cylindrical fixing region (2) for radially fixing at least one piston ring (4, 4') or a shaft sealing ring or a bearing ring, and the bearing housing cover (1) being equipped with a cylindrical connecting region (8) for connecting the bearing housing cover (1) to the bearing housing,
    characterised in that
    - the bearing housing cover (1) is produced in one piece from a metal sheet, and
    - the connecting region (8) has at least one radial groove (13) for receiving a tongue, in particular a bearing-housing-side tongue, for forming a tongue-and-groove connection device.
  2. Bearing housing cover according to claim 1,
    characterised in that
    - the bearing housing cover (1) is simultaneously formed as a heat shield, and/or
    - the bearing housing cover (1) is formed from aluminium, from a precision casting or from sheet steel.
  3. Bearing housing cover according to any of the preceding claims,
    characterised in that
    the bearing housing cover (1) has a disc-type covering region (3) for covering an inner region of the bearing housing.
  4. Bearing housing cover according to claim 3,
    characterised in that
    the connecting region (8) has at least one radial groove (13) for receiving a sealing element (14).
  5. Bearing housing cover according to either claim 3 or claim 4,
    characterised in that
    the covering region (3) has a profiling (9) which is formed as a radially acting tensioning element for tensioning the bearing housing cover (1) in the bearing housing.
  6. Bearing housing of a charging device comprising a bearing housing cover (1) according to any of the preceding claims which is arranged in particular on the compressor side.
  7. Charging device comprising a bearing housing according to claim 6.
  8. Method for producing a bearing housing cover (1) according to any of the preceding claims, in which at least a portion of the bearing housing cover (1) is produced by means of a deformation process.
EP11153225.5A 2010-03-08 2011-02-03 Bearing housing cover for a charging device Not-in-force EP2365190B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010010573A DE102010010573A1 (en) 2010-03-08 2010-03-08 Hull group of a cargo facility
DE102010025575A DE102010025575A1 (en) 2010-03-08 2010-06-29 Cover for bearing housing of exhaust gas turbocharger of motor vehicle, has cylindrical fixing region for radial fixing of piston ring and disk-like covering region to cover inner region of bearing housing

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EP2365190A2 EP2365190A2 (en) 2011-09-14
EP2365190A3 EP2365190A3 (en) 2011-10-05
EP2365190B1 true EP2365190B1 (en) 2015-09-09

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010010573A1 (en) 2010-03-08 2011-09-08 Bosch Mahle Turbo Systems Gmbh & Co. Kg Hull group of a cargo facility

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4265456A (en) * 1979-06-07 1981-05-05 Holset Engineering Company Limited Sealing assembly
JPH1182037A (en) * 1997-09-02 1999-03-26 Nippon Soken Inc Oil leakage prevention device for turbocharger

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Publication number Priority date Publication date Assignee Title
US2646210A (en) * 1951-05-05 1953-07-21 Eberspaecher J Turbocompressor
US4786238A (en) * 1984-12-20 1988-11-22 Allied-Signal Inc. Thermal isolation system for turbochargers and like machines
DE102004023284B4 (en) * 2004-05-11 2014-11-06 Volkswagen Ag Exhaust gas turbocharger for an internal combustion engine with variable turbine geometry
DE102004031986B4 (en) * 2004-07-01 2015-05-28 Volkswagen Ag Exhaust gas turbocharger for an internal combustion engine
FR2900975B1 (en) * 2006-05-12 2008-07-04 Renault Sas DEVICE FOR PROTECTING TURBOCHARGER LEAKS
DE102008000855A1 (en) * 2008-03-27 2009-10-01 Bosch Mahle Turbo Systems Gmbh & Co. Kg Housing, particularly turbocharger housing for use in devices heated during operation, has partially metallic foam with external surface, which contains coating or sealing, and housing external surface which has metallic structure
CN102066715A (en) 2008-07-02 2011-05-18 博格华纳公司 Bearing housing body group of an exhaust-gas turbocharger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265456A (en) * 1979-06-07 1981-05-05 Holset Engineering Company Limited Sealing assembly
JPH1182037A (en) * 1997-09-02 1999-03-26 Nippon Soken Inc Oil leakage prevention device for turbocharger

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EP2365190A3 (en) 2011-10-05

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