Abstract: The invention relates to a compressor (20) for generating a compressed air flow for a fuel cell (10), having a compressor element (21), in particular a compressor wheel, wherein the compressor element (21) is coupled in a to a drive shaft (23) for co-rotation, the drive shaft (23) being driven by a motor (22), in particular an electric motor, wherein at least one hydrodynamic or hydrostatic bearing (24, 25) is used to mount the shaft (23) in a rotatable manner, wherein the plain bearing (24, 25) is connected to a lubricant supply means (30), which is used to supply a lubricant for hydrodynamic or hydrostatic pressure generation to the plain bearing (24, 25), wherein the lubricant is water or a fluid mixture, predominantly comprising water, wherein the plain bearing (24, 25) has a lubricant inlet and a lubricant outlet, wherein the lubricant can be routed to the plain bearing (24, 25) via the lubricant inlet and the lubricant can be discharged from the plain bearing (24, 25) via the lubricant outlet, and where

Abstract: The invention relates to a compressor (20) for generating a compressed air flow for a fuel cell (10), having a compressor element (21), in particular a compressor wheel, wherein the compressor element (21) is coupled in a to a drive shaft (23) for co-rotation, the drive shaft (23) being driven by a motor (22), in particular an electric motor, wherein at least one hydrodynamic or hydrostatic bearing (24, 25) is used to mount the shaft (23) in a rotatable manner, wherein the plain bearing (24, 25) is connected to a lubricant supply means (30), which is used to supply a lubricant for hydrodynamic or hydrostatic pressure generation to the plain bearing (24, 25), wherein the lubricant is water or a fluid mixture, predominantly comprising water, wherein the plain bearing (24, 25) has a lubricant inlet and a lubricant outlet, wherein the lubricant can be routed to the plain bearing (24, 25) via the lubricant inlet and the lubricant can be discharged from the plain bearing (24, 25) via the lubricant outlet, and where

Abstract: 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 (17.1, 17.2, 17.3) of the rotor (10) and a counter-surface of the counter-bearing part (50) face each other to form a hydrodynamic plain bearing, wherein the rotor bearing surface and/or the counterface, when cut along and through the axis of rotation (R) in sectional view, form(s) a continuous bearing contour forming at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to provide hydrodynamic load capacities in both radial and axial directions, and wherein the counter-bearing part (50) is mounted in a bearing housing (60) or housing part.

Abstract: A fluid supply interface includes at least one supply coupling configuration, at least one discharge coupling configuration, at least one user coupling configuration, and a fluid conduit that connects the supply, discharge, and user coupling configurations to one another. A supply valve is capable of having fluid flow through it or is blocked for flow through it. A discharge valve is capable of having fluid flow through it or is blocked for flow through it. The supply valve is preloaded into a blocking position that prevents flow, and opens by means of a sufficiently large pressure difference between the two sides of the supply valve, against the preload force, for flow through in a direction from the supply coupling configuration toward the fluid conduit. The discharge valve likewise being preloaded into a closed position that prevents flow through it.

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).

Abstract: The invention relates to a gas compressor 10, in particular a turbocharger, having a rotatably mounted compressor wheel which is arranged at least partially in a compressor housing, the compressor housing having a gas routing area, for guiding a gas stream compressed by means of the compressor wheel, wherein an electric motor is provided, which has a motor rotor and a motor stator and which is mounted at least sectionally in a mounting area of a motor housing. In order to ensure permanently reliable operation in such a gas compressor 10 in a simple manner, it is provided in accordance with the invention that a gas pressure generator is provided, which is connected to the mounting area of the motor housing (20) in an air-conveying manner via at least one gas pressure line (70).

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.

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).

Abstract: 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 (17.1, 17.2, 17.3) of the rotor (10) and a counter-surface of the counter-bearing part (50) face each other to form a hydrodynamic plain bearing, wherein the rotor bearing surface and/or the counterface, when cut along and through the axis of rotation (R) in sectional view, form(s) a continuous bearing contour forming at least two contour sections (44.1 to 44.3; 53.1 to 53.3) to provide hydrodynamic load capacities in both radial and axial directions, and wherein the counter-bearing part (50) is mounted in a bearing housing (60) or housing part.

Abstract: The invention relates to a liquid supply interface for a cell culture system for supplying cell cultures found in different cell culture containers with a nutrient medium, wherein the liquid supply interface comprises: a housing defining a flow area; a first connection formation for the liquid-transferring connection of a first fluid line to the housing; a second connection formation formed separately from the first for the liquid-transferring connection of a second fluid line to the housing; a third connection formation formed separately from the first two for the liquid-transferring connection of the housing to a third fluid line; a coupling formation formed separately from the connection formations, which is formed for the producible and detachable liquid-transferring coupling contact according to the operation, with a corresponding counter-coupling formation of a cell culture container.

Abstract: The invention relates to a liquid supply interface for a cell culture system for supplying cell cultures found in different cell culture containers with a nutrient medium, wherein the liquid supply interface comprises: a housing defining a flow area; a first connection formation for the liquid-transferring connection of a first fluid line to the housing; a second connection formation formed separately from the first for the liquid-transferring connection of a second fluid line to the housing; a third connection formation formed separately from the first two for the liquid-transferring connection of the housing to a third fluid line; a coupling formation formed separately from the connection formations, which is formed for the producible and detachable liquid-transferring coupling contact according to the operation, with a corresponding counter-coupling formation of a cell culture container.

Abstract: The invention relates to a charging device (1), in particular an exhaust gas turbocharger (2), comprising a bearing housing (3) and a shaft (4) supported therein, comprising an axial bearing disk (5) for supporting the shaft (4) in the axial direction (6).

Abstract: A bearing bushing for a charging device may include an inner jacket surface including at least two radial depressions. A respective lowest point of the at least two radial depressions may be disposed on a circle having a radius R1. A plurality of plateau surfaces may be disposed circumferentially between the at least two radial depressions and may be offset radially towards an inside of the bearing bushing. The plateau surfaces may be curved and may have a constant radius R2. A ratio between the radius R1 and the radius R2 may correspond to the relationship: R1/R2=1.001 to 1.015.

Abstract: An axial bearing may include a body having a disk-form configuration, a centrally disposed passage opening extending axially into the body structured to receive a shaft, and at least one circular segmental oil pocket opening towards the passage opening. The at least one oil pocket, in both circumferential directions relative to the body, may transition into a plateau surface section directly adjoining the at least one oil pocket.

Abstract: A fluid supply interface includes at least one supply coupling configuration, at least one discharge coupling configuration, at least one user coupling configuration, and a fluid conduit that connects the supply, discharge, and user coupling configurations to one another. A supply valve is capable of having fluid flow through it or is blocked for flow through it. A discharge valve is capable of having fluid flow through it or is blocked for flow through it. The supply valve is preloaded into a blocking position that prevents flow, and opens by means of a sufficiently large pressure difference between the two sides of the supply valve, against the preload force, for flow through in a direction from the supply coupling configuration toward the fluid conduit. The discharge valve likewise being preloaded into a closed position that prevents flow through it.

Abstract: A bearing housing for an exhaust gas turbocharger may include a bearing housing cover arranged on a bearing housing wall. The bearing housing cover may include a penetrating rotation-symmetrical sealing recess with a centre axis and may have a locating surface facing the bearing housing wall and radially extending from the centre axis. The bearing housing may include a sealing bush arranged in at least one region of the sealing recess. The sealing bush may have a stop surface arranged opposite the locating surface and may include a penetrating shaft recess disposed rotation-symmetrical relative to the centre axis. The bearing housing cover may further include an at least partly circulating groove disposed on the locating surface radially spaced from the centre axis. The groove may include a drainage region arranged below the centre axis and extending from the centre axis radially to an outside.

Abstract: A fluid line element for building a fluid line section comprising a plurality of identical fluid line elements, wherein the fluid line element comprises: —an element body, —a first throughflow opening provided on the element body and a second throughflow opening, different from the first, —and a flow channel provided in the element body, which fluidically connects the first and the second throughflow openings for throughflow along a channel path. In a first region of the fluid line element, located closer to the first than to the second throughflow opening, a throughflow body formed separately from the element body is provided, which —forms a part of the flow channel, —is formed from a material having a lower elasticity modulus than the material of the element body, and —on the longitudinal end thereof facing into the interior of the element body, comprises a valve seat formation surrounding the channel path.

Abstract: 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. 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 at least two contour segments. The contour segments are suitable for generating hydrodynamic load capacity in a radial and axial direction. The contour segments are led into one another, by at least one transition segment, in such a way that hydrodynamic load capacity is generatable via the contour segments and the transition segment. The plain bearing is embodied as a multiple-surface plain bearing having two or more lubrication wedges in the region of the contour segments and of the transition segment.

Abstract: An axial bearing may include a body having a disk-form configuration, a centrally disposed passage opening extending axially into the body structured to receive a shaft, and at least one circular segmental oil pocket opening towards the passage opening. The at least one oil pocket, in both circumferential directions relative to the body, may transition into a plateau surface section directly adjoining the at least one oil pocket.

Abstract: The invention relates to a liquid supply interface for a cell culture system for supplying cell cultures found in different cell culture containers with a nutrient medium, wherein the liquid supply interface comprises: a housing defining a flow area; a first connection formation for the liquid-transferring connection of a first fluid line to the housing; a second connection formation formed separately from the first for the liquid-transferring connection of a second fluid line to the housing; a third connection formation formed separately from the first two for the liquid-transferring connection of the housing to a third fluid line; a coupling formation formed separately from the connection formations, which is formed for the producible and detachable liquid-transferring coupling contact according to the operation, with a corresponding counter-coupling formation of a cell culture container.