Rolling bearing device having a hydraulic damping device

Abstract

A roller bearing device in particular in a turbocharger having a housing component having a bearing hole having an inner circumference and a rolling bearing received therein on an outer race having an outer circumference. In order to implement a component such as a rotor assembly of a turbocharger that can rotate on the inner circumference with great smoothness and that is protected against imbalance, a hydraulic damping device made of reservoirs filled with a hydraulic fluid and alternating along the circumference facing the outer periphery and the inner periphery is provided in an annular gap between the outer periphery of the outer race and the inner periphery of the bearing hole by radially pretensioning the outer race relative to the bearing hole.

Description

technical field [0001] The invention relates to a rolling bearing arrangement, in particular in a turbocharger having a housing component with a bearing bore with an inner circumference and in which an outer bearing with an outer circumference is accommodated radially elastically. Rolling bearings on rings. Background technique [0002] Turbochargers are known as exhaust gas turbochargers for increasing the power of internal combustion engines by increasing the flow rate of the fuel mixture into the combustion chamber of the internal combustion engine. In this case, for example, a turbine is driven by the exhaust gas of the internal combustion engine, said turbine being connected in a rotationally locked manner to a compressor which increases the gas pressure of the fuel mixture in the intake section of the internal combustion engine. The rotor assembly of the turbocharger (essentially the compressor, the turbine and the rotor shaft) is often slidably supported in bearing b...

AI Technical Summary

Problems solved by technology

Such plain bearings are limited by the responsiveness of the turbocharger due to friction

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