Turbocharger with a fluid-dynamic slide bearing, or fluid-dynamic slide bearing

US11549397B2 · 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: Jan 10, 2023
• Expiry date: Nov 22, 2039

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 fluid dynamic bearing having 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 a fluid dynamic bearing, wherein the rotor bearing surface and/or the counterface form(s) a continuous bearing contour when cut longitudinally and through the axis of rotation (R) in sectional view, which bearing contour(s) are formed of at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to generate fluid dynamic load capacities in both the radial and the axial directions, wherein the bearing surface of the rotor (10) is formed by a rotor part (40), which is connected to a rotor shaft (11) and is secured on the rotor shaft (11), and wherein the rotor part (40) is supported relative to the rotor shaft (11) in the area of a support section (14) of the rotor shaft (11). In order to be able to provide such an exhaust gas turbocharger with a compact and efficient bearing arrangement having a fluid dynamic bearing, wherein at the same time the fluid dynamic bearing can be easily mounted using fe…