WO2009106159A1

WO2009106159A1 - Cooled housing consisting of a turbine housing and a bearing housing of a turbocharger

Info

Publication number: WO2009106159A1
Application number: PCT/EP2008/064638
Authority: WO
Inventors: Ralf Böning; Hartmut Claus; Robert Vetter
Original assignee: Continental Automotive Gmbh
Priority date: 2008-02-27
Filing date: 2008-10-29
Publication date: 2009-09-03
Also published as: US20110008158A1; CN101960099A; DE102008011258A1

Abstract

The invention relates to a housing (11) consisting of a turbine housing (10) and a bearing housing 13) for a turbo charger. The housing (11) comprises a cooling jacket (18) that consists of at least one or more shell elements (14, 16) that are fixed to the outside of the housing (11) and that form therewith a cavity (12) into which a coolant can be introduced.

Description

description

Cooled housing consisting of a turbine housing and a bearing housing of a turbocharger

The invention relates to a cooled housing consisting of a turbine housing and a bearing housing of a turbocharger and a turbocharger with such a housing.

Turbochargers, as known in the art, generally have a turbine disposed in an exhaust stream. In operation, the turbine, driven by the exhaust gases of the engine, supplies the drive energy for the compressor. The exhaust gas flow, which is conducted through an exhaust manifold into the turbine housing, drives the turbine wheel, which in turn drives a compressor wheel, which is arranged with the turbine wheel on a shaft. The shaft is hereby stored in a bearing housing of the turbocharger. By driving the compressor via the turbine, the compressor increases the pressure in the intake tract of the engine, whereby a larger amount of air enters the cylinder during the intake stroke. This means that more oxygen is available and a larger amount of fuel can be burned.

The exhaust gas flow with its high temperatures, which is passed through the turbocharger, has the consequence that the components of the turbocharger, in particular the turbine housing, are thermally heavily loaded. In this case, for example, exhaust gas temperatures of up to 1100 ⁰ C in passenger car gasoline engines can be achieved. In particular, in full-load operation or in full-load operation, it can therefore lead to significant thermal stress on the components of the turbocharger.

Up to now, the prior art has essentially relied on a suitable choice of materials for producing the housing parts of the turbocharger. The selection of materials takes place from the standpoint of sufficient strength at high temperatures. Here are high as materials used heat-resistant materials, which generally have high levels of very expensive alloying elements, such as nickel. A high nickel content in the material means that cast materials can better withstand the high temperatures. However, nickel has the disadvantage that it is a relatively expensive material. The prior art therefore seeks to use alternative materials or material combination, which are cheaper in price, but are also suitable for high component temperatures and in particular no large proportions of expensive alloying elements, such as nickel, need.

Furthermore, it is known from the prior art to provide the turbine housing with a cast-in cooling water jacket in order to lower the component temperature appropriately. However, such a cast-in cooling water jacket has the disadvantage that it is difficult to produce in small turbochargers, such as those used in motor vehicles, since a corresponding core must be provided for this purpose.

From DE 203 11 703 in this case a turbocharger for marine use is known. The turbocharger has a cooled turbine and bearing housing. The turbine casing is double-walled and cooled by seawater. The bearing housing further has its own additional cooling device, wherein the bearing housing is cooled by means of a coolant from a coolant circuit of a connected engine, instead of seawater, such as the turbine housing.

Furthermore, DE 100 22 052 discloses a turbine housing of a turbocharger. The turbine housing has, for example, a three-walled construction. The outer housing consists of several shells, as well as a welded-in water inlet and outlet. The outer and middle

Wall form a cavity through which a coolant is passed. The inner and middle walls also form a cavity forming an air gap insulation, wherein This cavity is additionally arranged a sliding seat, which allows the thermally induced length compensation between the sheet metal parts. A wire cushion stabilizes the sliding seat.

However, the turbine housing has the disadvantage that it has a complicated structure, by the three-walled construction. This results in that the turbine housing is expensive to manufacture and assemble. In addition, only the turbine housing is provided with a cooling, but not the

Bearing housing. This has the disadvantage that the functionality of the turbocharger storage can be affected by hot soak conditions.

Accordingly, it is the object of the present invention to provide a housing of a turbocharger, with an improved cooling device.

This object is achieved by a housing having the features of patent claim 1.

Accordingly, according to the invention a housing, consisting of a turbine housing and a bearing housing, provided for a turbocharger, wherein the housing has a cooling jacket, wherein the cooling jacket is formed from at least one or more shell elements, which are externally attached to the housing and with this form a cavity in which a coolant is insertable.

The cooled housing, consisting of a turbine housing and a bearing housing has the advantage that it is simple and inexpensive to manufacture, in contrast to the three-walled turbine housing, according to the prior art, which must be welded together from three sheet metal layers. Furthermore, the additional cooling of the bearing housing allows the functionality of the bearing of the shaft to be maintained even after hot soak conditions. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims and the description with reference to the drawings.

According to one embodiment of the invention, the turbine housing and the bearing housing of the Kombigehäuses are formed, for example, in one piece or two pieces. The one-piece embodiment has the advantage that it is possible to dispense with a tight connection of the turbine housing and the bearing housing to a housing

In a further embodiment of the invention, the turbine housing and / or the bearing housing on a corresponding receptacle to accommodate the other housing part therein accordingly. The receptacle can be designed as desired, for example as a depression or a projection on which the other housing part is pushed. By receiving the two housing parts can be easily aligned with each other and adjusted before they are firmly connected.

In another embodiment of the invention, the respective shell element for attachment to the housing and for forming the cooling jacket, for example, a sheet metal part or a die-cast part. The sheet metal part has the advantage of a constant thickness, wherein it can be, for example, deformed to form the corresponding contour of the cooling jacket. The die cast part in turn does not need to be reshaped, but can also be formed, for example, with a more complex contour.

According to another embodiment of the invention, the cooling jacket, for example, at least one inlet port for the admission of a coolant and at least one outlet port for discharging the coolant to the cooling jacket. The inlet and outlet ports may in this case be arranged adjacent to one another or on the same side on the housing. Optionally, a partition wall element can be arranged between the two terminals. This has the advantage that it prevents the fresh coolant introduced into the cooling jacket from escaping again at the adjacent outlet before it has flowed sufficiently into the housing.

In another embodiment according to the invention, the inlet and outlet ports are arranged away from one another on the cooling jacket, for example on opposite sides. This has the advantage that no partition element between the two terminals is necessary.

In a further embodiment according to the invention, the respective shell element can be fastened to the housing, for example by means of welding, soldering, screwing and / or gluing etc. The turbine housing and / or the bearing housing of the housing may optionally have corresponding attachment portions, to facilitate the reception and attachment of the respective shell member. The fastening section may in this case be of any desired design, for example in the form of a depression or a step, a groove or a slot, etc., in order to receive the respective shell element in a suitable manner. The attachment portions may be the same or different.

According to another embodiment of the invention, for example cooling water is used as the coolant, which is branched off from a motor connected to a turbocharger of the housing. This has the advantage that an already existing cooling circuit can be used.

In a further embodiment of the invention, the turbine housing, the bearing housing and / or the respective shell element at least partially or completely from a plastic (s) and / or fiber composite material (s) are produced. The parts are suitably sealed together. Such plastics or fiber composite materials ben advantage that they are relatively light and so the weight of the turbocharger can be reduced.

In another embodiment of the invention, the bearing housing has at least one or more feeds to cool a portion or substantially all of the bearing assembly stored in the bearing housing. In this case, coolant is conducted into the area of the bearing arrangement via the feeders and optionally also the used or heated coolant via a corresponding feed or

Return derived again. This has the advantage that the coolant can be guided closer to the bearing assembly and thereby improved cooling can be achieved.

The invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawings. Show it:

1 is a perspective view of a cooled housing of a turbocharger consisting of a turbine and bearing housing according to an embodiment of the invention;

FIG. 2 shows a sectional view B-B of the cooled turbine and bearing housing according to FIG. 1; FIG. and

Fig. 3 is a further sectional view C-C of the cooled turbine and bearing housing of FIG. 1, wherein a connection for the introduction and a connection for the discharge of the coolant is shown.

In the following, an inventive, cooled housing of a turbocharger consisting of a turbine and bearing housing is explained with reference to the figures an example. Such a turbocharger can, for example, in particular in a Car or other motor vehicle.

The approach of the invention aims, inter alia. to an integration of the bearing housing and the turbine housing in a housing part or a casting, in which the necessary cooling of the tur- binengehäusewerkstoffs and the storage is accomplished by a cooling jacket. The cooling jacket is thereby formed from at least one, two, three or more shell elements, which are fastened around the combination housing consisting of the turbine and bearing housing and thereby form a cavity with the housing into which the coolant can be introduced.

The aim of the invention is to reduce the component temperature of the turbine housing to allow the use of cheaper materials. At the same time, the bearing housing is to be integrated into the turbine housing and the cooling jacket to be cooled to be cooled areas of the bearing housing. As a result, for example, the functionality of the turbocharger bearing can be retained even after hot soak conditions.

The cavity, which is formed around the actual turbine and bearing housing part by at least one or more shell elements are attached to the housing, is designed so that it is suitable for the flow with a coolant and can be extended as far as desired on the bearing housing area. For example, substantially over the entire bearing housing part or a portion of the bearing housing.

FIG. 1 shows a perspective view of the housing 11 according to the invention of a turbocharger, which consists of a turbine housing 10 and a bearing housing 13. Both housing areas 10, 13 are hereby provided with a cooling jacket 18. The turbine housing section 10 in the present case has a device for actuating a bypass channel 32. In principle, the cooled combined product according to the invention is housing 11 from turbine and bearing housings 10, 13 but independent of such a device for actuating a bypass channel 32. It can in principle any type of turbocharger with a turbine and bearing housings 10, 13 are used.

The cooling jacket 18 is formed in FIG. 1, for example, from two shell elements 14, 16. The respective shell element 14, 16 can, for example, when the turbine and / or bearing housing 10, 13 is made of an aluminum alloy or steel, for example, consist of a metal sheet, which is attached to the turbine and bearing housing. For fastening, the respective shell element 14, 16 can be welded or soldered, for example, to the combi housing 11 or otherwise secured. In this case, a shell element 14, 16 of sheet metal, for example, have a sheet thickness of 0.8mm to 2mm. The sheet thickness is not limited to this range, but can also be chosen smaller or larger, depending on the function and purpose.

If the housing 11 consisting of the turbine and bearing housing 10, 13, for example, an aluminum alloy, then the respective shell elements 14, 16 may be made of a diecast part, which is welded or soldered to the aluminum alloy, for example. In this case, the die cast part, for example, have a wall thickness in a range of 2mm to 3mm or 2.5mm to 3mm, but the wall thickness of the diecast part is not limited to this area, but can also be chosen smaller or larger, depending on the function and application.

Depending on whether a substantially liquid or, for example, also gaseous coolant is present in the cooling jacket 18, the respective shell elements 14, 16 are attached to the turbine and bearing housing 10, 13 in a liquid-tight or gastight manner, for example welded and / or soldered, to provide the appropriate cavity 12 for the coolant. However, it can also be provided any other type of attachment and sealing, which is suitable Shell elements 14, 16 to the housing 11 to connect liquid-tight or gas-tight.

The turbine and bearing housing 10, 13, as shown in FIG. 1, is for example a casting, for example of an aluminum alloy or other suitable material or combination of materials, such as aluminum. Gray cast iron. The two shell elements 14, 16, which are fastened to the turbine and bearing housings 10, 13 in the present example, form the cooling jacket 18 or the cavity 12 into which the coolant is introduced. The cavity 12 is dimensioned so that it can be sufficiently flowed through with coolant to cool the housing 11 suitable.

In the present case, as shown in Fig. 1, the two shell elements 14, 16 each consist of a metal sheet. The sheet is thereby converted accordingly to form the contour of the cooling jacket 18. Subsequently, the shell element 14, 16 attached to the housing 11 consisting of turbine and bearing housing 10, 13.

As shown in FIG. 1, at least one port 20 for an inlet and a port for a drain 22 of the coolant are provided on the cooling jacket 18. One or both ports 20, 22 may be formed on a corresponding shell element 14, 16 or attached thereto as a separate part. As an alternative to the sheet metal part as a shell element 14, 16 may also be provided a corresponding die-cast part. This is chosen in its material so that it is suitably fastened to the housing 11 or the turbine and bearing housing 10, 13. This means that the material of the shell elements 14, 16 is selected so that it can be welded and / or soldered, for example, to the turbine and bearing housing 10, 13. The same applies to the sheet metal parts described above.

On the housing 11 or its turbine housing part 10 and bearing housing part 10 can corresponding mounting portions 24 may be provided, as shown in Figs. 1-3, to which the shell elements 14, 16 can be attached. Further, the shell members 14, 16 are joined together at their ends 26 (dotted line), such as by welding and / or brazing, to form the cavity 18 for the coolant.

As coolant, which is introduced into the cooling jacket 18 via the first connection 20 or inlet connection, cooling water can be used, for example, or another suitable coolant. Furthermore, as cooling water, for example, cooling water can be used from the engine or diverted from it, or cooling water can be provided in a separate circuit.

As shown in FIG. 1, the cooling jacket 18 has, for example, an inlet port 20 for introducing the coolant and an outlet port 22 for discharging the coolant. In this case, the two connections 20, 22 are arranged as far away from each other as possible in FIG. For example, the terminals 20, 22 are arranged substantially opposite one another. This has the advantage that the coolant first flows through the inlet port 20 on one side into the cooling jacket 18 or the cavity 12 formed by it. The fresh coolant flows on both sides around the housing 11 or the turbine and bearing housing 10, 13 in order to cool it accordingly. At the end of the used coolant flows through the outlet port 22 again out of the cooling jacket 18 and the cavity 12 out, as indicated by the arrows in Fig. 1.

The terminals 20, 22 can be arranged at the same height, as shown for example in the following in Fig. 3, or be provided at different heights. Furthermore, at least one, two or more

Inlet ports 20 and / or outlet ports 22 are provided, wherein the ports 20, 22 can be arbitrarily positioned to each other, preferably so that the coolant the housing 11 or the turbine and bearing housing 10, 13 suitably flow for cooling and can flow out of the cooling jacket 18 again. This applies to all embodiments of the invention.

In an alternative embodiment, not shown, the inlet and outlet ports 20, 22 can also be arranged, for example, on the same side or directly adjacent to or in the vicinity of each other, wherein the two ports 20, 22 in this case, for example, by a partition wall element ( not shown) are substantially separated from each other. The partition wall element is positioned in the cooling jacket 18 of the housing 11 in such a way that the coolant initially flows essentially into the cooling jacket 18 or its cavity 12 via the inlet connection 20 and does not immediately flow away again via the adjacent outlet connection 22, but initially the housing 11 or whose turbine and bearing housing 10, 13 flows against or at least partially or substantially flows around. If the coolant has flowed around the turbine and bearing housings 10, 13 substantially and has absorbed, for example, heat from the hot or warm turbine and bearing housings 10, 13, then it flows out of the cooling jacket 18 again via the outlet connection 22. As described above, the partition wall member serves to substantially prevent mixing of the fresh coolant with a used coolant. The partition wall element can in this case be provided or fastened, for example, to the turbine and bearing housing 10 and / or a corresponding shell element 14, 16. The shell element may in this case be arranged and fastened between the inlet and outlet connection 20, 22 in such a way that it completely or at least partially separates one another, for example by arranging the partition wall element between the two connections 20, 22 over the entire length of the housing 11 at least over part of the length of the housing 11. In Fig. 2, the cooled housing 11 is shown consisting of the turbine and bearing housing 10, 13 of FIG. 1 in a sectional view BB. The turbine housing 10 has, for example, a receptacle 15 in the form of a depression, with which it is pushed onto the bearing housing 13 in order to connect the two housing parts and to adjust or align with each other.

Furthermore, the two shell elements 14, 16 are shown in FIG. The respective shell element 14, 16, for example a sheet metal part, after it has been suitably deformed, is fastened to the turbine housing 10 and the bearing housing 13 of the combi housing 11. Optionally, corresponding fastening portions 24 may be provided, for example in the form of recesses or steps into which the ends of the shell elements 14, 16 are inserted and fastened to the housing 11.

The attachment portions 24 on the turbine housing 10 are provided, for example, in the form of a recess 34 in Fig. 2 into which the respective shell member 14, 16 is inserted and connected to the turbine housing 10, e.g. welded and / or soldered. In principle, however, other types of fastening portions 24 are possible, for example, the recess 34 in the form of a groove or a

Slit be formed, in which the shell member 14, 16 inserted and, for example, welded. Furthermore, the respective fastening portions 24 on the turbine housing 10 may be the same or different, depending on the function and purpose. This applies to all embodiments according to the invention.

As shown in FIG. 2, the turbine housing 10 and the bearing housing 13 are first formed as two separate parts, such as castings. The two housing parts 10, 13 are assembled and fastened to each other so that no coolant can inadvertently penetrate therebetween. Depending on whether the coolant is liquid or The two housing parts 10, 13 are also connected to one another in a liquid-tight or gas-tight manner, for example by means of welding, soldering and / or screwing, whereby an additional suitable seal is provided between the housing parts 10, 13 in a screw connection becomes. Alternatively, the turbine housing 10 and the bearing housing 13 may also be integrally formed, for example in the form of a contiguous casting (not shown). According to the two housing parts 10, 13 and the shell elements 14, 16 are attached to the housing parts 10, 13 liquid-tight or gas-tight, as described above, depending on, for example, in which consistency the coolant is present in the cooling jacket 18.

Optionally, at least one, two or more additional flow elements 28 may be provided inside the cooling jacket 18 for conducting, for example, a liquid coolant. The two flow elements 28 may be formed, for example, in the form of a respective rib, which extends, for example, in the axial direction, as indicated in FIG. 2 in a greatly simplified manner with a dashed line. In principle, the respective flow element 28 can be designed and oriented as desired in order to appropriately guide the flow of the coolant. The flow elements 28 can thereby be formed on the turbine housing and / or bearing housings 10, 13, or there, for example. molded or attached to, and / or provided on the inside of the corresponding shell member 14, 16, or fastened or molded thereto. The provision of flow elements 28 is an optional feature. This applies to all embodiments of the invention.

FIG. 3 shows a sectional view CC of the housing 11 consisting of the turbine and bearing housings 10, 13 according to FIG. 1, the two opposite inlet and outlet connections 20, 22 being shown for introducing and removing the coolant. Furthermore, the inlet port 20 is provided on the second shell member 16, for example. In principle, however, only one of the connections 20, 22 can be attached to one of the shell elements 14, 16. The two terminals 20, 22 are for example separately attached to the respective shell element 14, 16 or formed on this or molded and as shown in Fig. 1 and 3, for example, provided with an additional connection element 36 and a connection cap ,

For cooling the arranged in the bearing housing 13 bearing assembly (not shown), for example, two feeds 38 are provided, through which the coolant is passed into the region 40 of the bearing assembly to cool them.

In principle, the cooling jacket 18 according to the invention is applicable to any type of cooling of a bearing arrangement in a bearing housing 13 and to any type of supply 38 of the coolant to the bearing assembly. The illustration in FIG. 3 is merely exemplary and the invention is not limited thereto.

In the present case, as shown in FIGS. 1 to 3, the cooling jacket 18 extends over the turbine housing 10 and substantially over the entire bearing housing 13. In principle, the cooling jacket 18 but also only over part of the turbine housing 10 and / or the bearing housing 13, depending on which part or section is to be additionally cooled.

The advantage of the above-described embodiment according to the invention, in particular compared to an embodiment with a cast-in cooling jacket, is that the cooling jacket 18 can be realized even with very small passenger car turbine housings 10, since no core elements have to be used for this purpose. In addition, a component reduction of the turbocharger, the possible reduction to a coolant inlet and outlet in cooled turbine and bearing housing area is possible. Although the present invention has been described above with reference to the preferred embodiments, it is not limited thereto, but can be modified in a variety of ways. The embodiments described above can be combined with one another, in particular individual features thereof.

The coolant, such as cooling water, for cooling the housing 11 may, as described above, be taken from a cooling circuit of an engine connected to the turbocharger. The cooling circuit is formed for example of an engine block, a thermostat, a radiator and a coolant pump. After cooling the housing 11, the coolant can be supplied to the cooling circuit again. However, the invention is not limited to this embodiment of a refrigeration cycle.

By providing the cooling jacket 18 for cooling the housing 11, this can also be made of less heat-resistant materials. For example, the respective housing 11 materials such as low-alloyed steels, aluminum, gray cast iron, etc. have. As a result, for example, the use of expensive alloying elements such as e.g. Nickel are omitted or its share is at least reduced. This further has the advantage that manufacturing costs can be reduced.

In addition, it is possible to carry out the execution of the turbine housing 10, the bearing housing and / or the respective shell element 14, 16 not only in ferrous or non-ferrous metals, but also in a plastic (s) and / or fiber composite material (s). The plastics or fiber composite materials are chosen so that they are suitable for the respective resulting temperatures of the turbine housing 10 formed therefrom or bearing housing 13 or shell element 14, 16. In this case, the turbine housing 10 or bearing housing 13 and the respective shell element 14, 16 is connected accordingly, for example by welding, soldering, screwing with a seal between the respective shell element 14, 16 and the housing 11 and / or gluing, to only a few fastening methods call. The shell elements 14, 16 can each be made of the same material or of a different material, depending on the function and purpose. The same applies to the turbine housing 10 and the bearing housing 13th

In addition to the cooling function of the cooling jacket 18 by introducing the coolant, it is also possible to use the cooling jacket 18, for example, instead of cooling only for heating, for example, if the turbine housing 10 and bearing housing 13 to be warmed or preheated in an operating condition. It is possible, for example, to use a cooling water already heated by the engine and to introduce it into the cooling jacket 18.

Claims

claims

1. Housing (11) consisting of a turbine housing (10) and a bearing housing (13) for a turbocharger: - wherein the housing (11) has a cooling jacket (18), wherein the cooling jacket (18) consists of at least one or more shell elements ( 14, 16), which are fastened to the outside of the housing (11) and with which they form a cavity (12) into which a coolant can be inserted.

2. Housing according to claim 1, wherein the turbine housing and the bearing housing of the housing form, for example, an integral part or two separate parts which are fastened to one another.

3. Housing according to claim 2, characterized in that the turbine housing (10) and / or the bearing housing (13) have a corresponding receptacle (15) which can be pushed onto the other housing part to the two housing parts (10, 13) to each other connect.

4. Housing according to at least one of claims 2 to 3, characterized in that the turbine housing (10) and the bearing housing (13) of the housing (11), for example, form a one-piece casting or form two separate castings which are fastened together, wherein the respective Casting, for example, an aluminum casting, a gray cast iron part and / or a steel casting is.

5. Housing according to at least one of claims 1 to 4, characterized in that the respective shell element (14, 16) is, for example, a cast part, for example an aluminum casting, a cast iron part and / or a cast steel part, wherein the respective shell element (14, 16) is optionally formed as a die cast part.

6. Housing according to at least one of claims 1 to 5, characterized in that the respective shell element (14, 16) is, for example, a sheet-metal part.

7. Housing according to at least one of claims 5 or 6, characterized in that a sheet metal part as a shell element (14, 16), for example, a thickness of 0.8mm to 2mm and a die-cast as a shell element (14, 16), for example, a thickness of 2mm to 3mm.

8. The housing according to claim 1, wherein at least one inlet connection for introducing a coolant and / or at least one outlet connection for draining the coolant are provided on the cooling jacket.

9. Housing according to claim 8, characterized in that the inlet and outlet port (20, 22) adjacent to each other or on the same side on the housing (11) are arranged, optionally additionally a partition wall element

(30) between the two terminals (20, 22) can be arranged.

10. Housing according to at least one of claims 8 or 9, characterized in that the first and second terminals (20, 22) on the housing (10) are arranged apart, for example, substantially opposite one another.

11. Housing according to at least one of claims 1 to 10, characterized in that the shell element (14, 16) on the housing (11) can be fastened, for example by means of welding, soldering, screwing and / or gluing, wherein the turbine housing (10 ) and / or the bearing housing (13) of the housing (11) optionally corresponding fastening portions (24), for receiving the respective shell element (14, 16).

12. Housing according to at least one of claims 1 to 11, characterized in that, for example, a liquid and / or gaseous coolant is used as the coolant.

13. Housing according to at least one of claims 1 to 12, characterized in that, for example, cooling water is used as the coolant, wherein the cooling water can be used, for example, by an engine connected to a turbocharger of the housing (10).

14. Housing according to at least one of claims 1 to 13, characterized in that at least one or more flow elements (28) in the cavity (18) are providable, wherein the respective flow element (28) on the housing (11) or the respective shell element ( 14, 16) is formed.

15. The housing according to claim 1, wherein the housing has at least two and more shell elements that form the outer wall of the cooling jacket.

16. Housing according to at least one of claims 1 to 15, characterized in that the shell element (14, 16) on the housing (10) is liquid-tight or gas-tight fastened.

17. Housing according to at least one of claims 1 to 16, characterized in that the turbine housing (10), the bearing housing (13) and / or the respective shell element (14, 16) consists of a steel, such as a low alloy steel or at least having.

18. The housing according to claim 1, wherein the turbine housing, bearing housing and / or the respective shell element comprises or comprises a plastic and / or fiber composite material.

19. Housing according to at least one of claims 1 to 18, characterized in that the bearing housing (13) has at least one or more feeds (38) to a part or substantially the entire bearing assembly, which is stored in the bearing housing (13) to cool.

20. A turbocharger with a housing according to at least one of claims 1 to 19.