Exhaust gas turbocharger having a hydrodynamic plain bearing or a hydrodynamic plain bearing

US12065940B2 · kind B2 · utility

Assignee

• BMTS Technology GmbH & Co. KG · DE

Inventors

• Martin Berger · Nettetal, DE
• Rüdiger Kleinschmidt · Bammental, DE
• Frieder Stetter · Stuttgart, DE
• Oliver Kuhne · Stuttgart, DE
• Steffen Schmitt · Ditzingen, DE

Key dates

• Filing date: Nov 22, 2019
• Grant date: Aug 20, 2024
• Expiry date: Nov 13, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/24
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an exhaust gas turbocharger having a hydrodynamic plain bearing or a hydrodynamic plain bearing, comprising a rotor (10) and a counter-bearing part (50) assigned to the rotor (10), wherein a rotor bearing surface of the rotor (10) and a counterface of the counter-bearing part (50) face each other to form the hydrodynamic plain bearing in the form of a combined journal—thrust bearing, having a continuous hydrodynamically load bearing gap formed between the rotor bearing surface and the counterface, wherein the rotor bearing surface and/or the counterface, when cut longitudinally and through the axis of rotation (R) in sectional view, form(s) a bearing contour forming merging contour sections (17.1 to 17.3; 44.1 to 44.3; 53.1 to 53.3) to generate hydrodynamic load capacities in both the radial and the axial direction, wherein a contour section (17.3; 44.3; 53.3) in sectional view in a first bearing area forms a linear section that is part of a, in particular cylindrical or partially cylindrical, bearing section rotating at least sectionally about the axis of rotation (R), wherein a further contour section (17.1; 44.1; 53.1), in sectional view in a second bear…