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Exhaust turbocharger

a technology of exhaust turbocharger and cooling fluid, which is applied in the direction of machines/engines, liquid fuel engines, auxiliaries, etc., can solve the problems of requiring a considerable amount of installation space and the response behavior of the exhaust turbocharger is dependent, and achieves the effect of reliable supply of cooling fluid

Active Publication Date: 2022-05-12
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent is about an exhaust turbocharger that has a rotating shaft with a turbine wheel and a compressor wheel. It also includes an electric machine with a rotor and stator. There is a sleeve with fluid ducts that cool the bearings of the shaft. The design allows for efficient use of space, with the turbine wheel and compressor wheel on opposite ends of the shaft. The use of two bearings at each end of the shaft helps with load distribution and creates space for the rotor between the bearings. The technical effects are better cooling and space utilization for the exhaust turbocharger.

Problems solved by technology

In the case of such exhaust turbochargers, however, it is disadvantageous that the response behavior of the exhaust turbocharger is dependent on the exhaust gas flow.
This requires a considerable amount of installation space.

Method used

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Examples

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Embodiment Construction

[0018]FIG. 1 shows a schematic sectional illustration of one exemplary embodiment of an exhaust turbocharger 1 according to aspects of the invention, and FIG. 2 shows, in another schematic sectional illustration, another exemplary embodiment of an exhaust turbocharger 1 according to aspects of the invention. In this case, the basic configurations are similar, while differences arise, in particular, with regard to the bearings 4 used.

[0019]The exhaust turbochargers 1 shown in FIGS. 1 and 2 each have a housing 2 in which a respective shaft 3 is rotatably mounted by means of bearings 4. Here, rolling bearings 5 are used in the exemplary embodiment shown in FIG. 1, while plain bearings 6 are used in the exemplary embodiment shown in FIG. 2. Ball bearings or tapered roller bearings or the like, for example, can be used as rolling bearings.

[0020]The shaft 3 carries a turbine wheel 7, on the one hand, and a compressor wheel 8, on the other hand. The turbine wheel 7 is driven by an exhaust ...

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Abstract

An exhaust turbocharger has a housing, in which a shaft is mounted by bearings, which carries a turbine wheel, on the one hand, and a compressor wheel, on the other hand. An electric machine has a rotor and a stator. The rotor is secured on the shaft for conjoint rotation therewith and the stator surrounds the rotor radially on the outside. A sleeve, which supports the rotor radially and axially, is arranged between the stator and the rotor. The sleeve has at least one fluid duct, by way of which a cooling fluid can be guided toward the bearings of the shaft.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to German Patent Application No. 10 2020 129 525.1, filed Nov. 10, 2020, the content of such application being incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The invention relates to an exhaust turbocharger, in particular for an internal combustion engine of a motor vehicle.BACKGROUND OF THE INVENTION[0003]In motor vehicles, internal combustion engines charged by a turbocharger are known. In this case, an exhaust gas flow of the internal combustion engine drives a turbine wheel of the turbocharger, which is connected to a compressor wheel, which compresses air in the intake tract of the internal combustion engine before it is fed into the internal combustion engine. As a result, more air is delivered into the intake tract, increasing engine power and engine torque.[0004]In the case of such exhaust turbochargers, however, it is disadvantageous that the response behavior of the e...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04D29/58F02B39/00F04D17/10F04D29/043F04D29/049
CPCF04D29/582F02B39/005F04D29/049F04D29/043F04D17/10F01D25/16F01D25/166F01D25/12F01M9/10F04D25/024F05D2220/40F04D29/5806F04D25/06F04D29/063F04D29/5813F04D29/057F04D29/059
Inventor SCHOLZ, JÜRGENVERDOORN, WERNERRONNEBURGER, RALPHSCHULZ, ALEXANDERROTHENBERGER, PETERSCHRECK, MICHAEL
Owner DR ING H C F PORSCHE AG
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