Abstract: The invention relates to a hydrodynamic plain bearing having a stator and a rotor rotatable with respect to the stator, a rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure.

Abstract: A bearing device of an exhaust gas turbocharger may include a bearing bush for mounting a shaft in a bearing housing. A pin may engage radially from a hub of the bearing housing into the bearing bush to provide a position securing device of the bearing bush at least against rotational movement. The pin and the bearing bush may be mounted on one another via at least one curved bearing surface, for example a spherical bearing surface and/or a convex bearing surface.

Abstract: The invention relates to an exhaust-gas-driven turbocharger having a hydrodynamic plain bearing having a rotor and a stator, the rotor being rotatable with respect to the stator, the rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure in the region of a converging gap. In such a hydrodynamic plain bearing, the application properties can be improved by the fact that the rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from convex or concave curvatures and/or from at least two contour segments that are embodied as straight lines and/or curvatures. The invention also relates to a hydrodynamic plain bearing or bearing arrangement having such a plain bearing.

Abstract: An exhaust gas turbocharger may include a bearing housing and a rotor. The rotor may have a shaft mounted in the bearing housing via two radial bearing bushes. Each radial bearing bush may have an inner surface facing the shaft. The inner surface may have a single chamfer, where the single chamfers of the two radial bearing bushes face one another, or two chamfers, where one of the two chamfers for each of the two radial bearing bushes facing one another are larger than the other of the two chamfers for each of the two radial bearing bushes facing away from one another.

Abstract: A supercharging device may include a rotor mounted in a bearing housing via at least one bearing bush. The bearing bush may include an oil bore. An oil film may be disposed at least one of between the rotor and the bearing bush and between the bearing bush and the bearing housing. The bearing housing may include at least one oil feed duct for lubricating the bearing bush. At least one of the oil feed duct and the oil bore may be configured with respect to the bearing bush such that the bearing bush during the operation of the supercharging device is positively accelerated in a direction of rotation of the rotor via an oil jet communicated from the oil feed duct.

Abstract: An exhaust gas turbocharger may include a bearing housing and a rotor. The rotor may have a shaft mounted in the bearing housing via two radial bearing bushes. Each radial bearing bush may have an inner surface facing the shaft. The inner surface may have a single chamfer, where the single chamfers of the two radial bearing bushes face one another, or two chamfers, where one of the two chamfers for each of the two radial bearing bushes facing one another are larger than the other of the two chamfers for each of the two radial bearing bushes facing away from one another.