TURBOCHARGER WITH A HYDRODYNAMIC SLIDE BEARING, OR HYDRODYNAMIC SLIDE BEARING

摘要

The invention relates to a turbocharger with a hydrodynamic slide bearing or to a hydrodynamic slide bearing, comprising a rotor (10) and a counter bearing part (50) which is paired with the rotor (10). A rotor-bearing surface (17.1, 17.2, 17.3) of the rotor (10) and a counter surface of the counter bearing part (50) lie opposite each other in order to form a hydrodynamic slide bearing. The rotor-bearing surface and/or the counter surface forms/form a continuous bearing contour at a cut along and through the rotational axis (R) in a sectional view, said bearing contour being made of at least two contour sections (44.1 to 44.3; 53.1 to 53.3) which transition into each other, in order to generate hydrodynamic load-bearing capacities both in the radial direction as well as in the axial direction. The counter bearing part (50) is installed into a bearing housing (60) or a housing part. The aim of the invention is to allow such a turbocharger to be provided with a high-capacity bearing assembly which has a compact construction and comprises a hydrodynamic slide bearing, said hydrodynamic slide bearing simultaneously being easy to assemble with a low cost of parts. According to the invention, this is achieved in that a gap region (57), preferably a circumferential gap region, is formed between the outer contour of the counter bearing part (50) and the bearing housing (60) or the housing part in order to form a trapped oil film, said gap region (57) being spatially connected to a lubricant guide channel (61), and the gap region (57) and the continuous bearing contour of the rotor (10) and/or the counter bearing part (50) overlap in the direction of the rotational axis (R) at least in some regions.