Turbocharger with vibration suppressing device

摘要

A turbocharger shaft (4) is supported for rotation about its axis in a bearing housing (1) by a pair of journal bearings (5,6) disposed between the turbine wheel (2) and the compressor impeller (3). A device (15) such as a hydraulic or magnetic actuator applies a non-axial force to the shaft at an axial location offset from the bearing so as to suppress non-axial sub-synchronous shaft vibrations that occur during operation of the turbocharger. This reduces turbocharger noise.