A thrust washer for an internal combustion engine may include a body. The body may have a slip surface and a planar contact surface associated with an engine block. The slip surface may have a surface profile the may include at least one ramp section, at least one flat horizontal section, and at least one oil channel. The at least one ramp section and the at least one flat horizontal section may be connected via an asymptotic curve. The at least one ramp section may extend asymptotically toward the at least one flat horizontal section. The at least one ramp section may have an angular length of 45 or less, the at least one flat horizontal section may have an angular length of 45 or less, and the at least one oil channel may have an angular length of 20 or less.

A full-floating bearing for reducing vibration of a shaft of a turbocharger has a central axis and includes an outer surface and an inner surface. The outer surface is configured to face away from the central axis. The inner surface is configured to face the central axis and is radially spaced from the outer surface such that the inner surface is configured to be disposed between the central axis and the outer surface. An aperture is defined between the outer surface and the inner surface and configured to allow lubricant to flow between the outer surface and the inner surface. The inner surface has a surface profile for reducing vibration of the shaft of the turbocharger. The surface profile is defined by the equation Ro=Rb+A Sin(3+).

A projecting-shape portion projecting toward a first sliding surface in a section along a sliding direction of a second sliding surface is provided on the second sliding surface which slides relative to the first sliding surface, and an apical portion, which is a most projecting part, and a bottom edge portion, which is at a position that is most spaced apart from the first sliding surface, are provided on the projecting-shape portion, and when a gap between the first sliding surface and the second sliding surface at the apical portion is assumed to be a minimum gap h1 and a gap at the bottom edge portion is assumed to be a maximum gap h2, h1 is set to be within a range of 0.5 m to 40 m and h2/h1 is set to be within a range of 1.5 to 5.0.

A shaft member for a fluid bearing device includes, on an outer peripheral surface thereof, two bearing surfaces (31 and 32) separated from each other in an axial direction, and a middle relief portion (33) formed between the bearing surfaces (31 and 32) and having a diameter smaller than a diameter of the bearing surfaces. The middle relief portion (33) includes a cylindrical surface portion (331) having a ground surface, and stepped portions (332) arranged on both axial sides of the cylindrical surface portion and having a diameter difference from the cylindrical surface portion.

A hydrodynamic plain bearing includes a bearing shell having an inner surface which forms a bearing surface for a rotating shaft or the like. The bearing surface has a plurality of surface segments separated from each other and disposed successively in the circumferential direction of the bearing shell. At least the bearing surface or the entire bearing shell is made from CuCr1Zr.

The invention relates to a support of a bearing pad of a sliding bearing.

Provided is a bearing pad support connection including a bearing pad and a bearing pad support, whereby the bearing pad is connected to the bearing pad support by a pivot joint. The pivot joint includes a pivot pocket, and a pivot.

The pivot pocket includes a sealing that abuts on the pivot of the pivot joint.

A stationary thrust bearing is for a stationary and rotating thrust bearing system designed to withstand an axial load along an axis of a rotation shaft mounted in a guide bearing, in particular of a turbocharger. The stationary thrust bearing includes a flange in which is created a through-opening that allows the rotation shaft to pass through and has, on a face, pads with structured regions. Specifically, at least two sets of the pads, which include a first set of pads with structured regions present in a first ring on the face of the flange, and a second set of pads with structured regions present in a second ring, coaxial with the first ring, on the face of the flange, set back relative to the first set of pads in the longitudinal direction of the axis of the opening.

Provided is a semi-cylindrical shaped half bearing. The half bearing has an inner surface forming a sliding surface. The sliding surface includes a plurality of recesses. Each recess has a smooth recess surface recessed from the sliding surface toward an outer diameter side of the half bearing. The recess surface forms a convex curve toward the outer diameter side of the half bearing in a cross-sectional view in any direction perpendicular to the sliding surface. The recess surface includes a plurality of circumferential grooves. The circumferential grooves are recessed from the recess surface toward the outer diameter side of the half bearing. The circumferential grooves extend along a circumferential direction of the half bearing so that smooth surfaces and the circumferential grooves are alternately arranged on the recess surface.

A system includes a hydraulic transfer system configured to exchange pressures between a first fluid and a second fluid, where the first fluid has a pressure higher than the second fluid, includes a sleeve comprising an elliptical shape, a cylindrical rotor disposed within the sleeve in a concentric arrangement, where the cylindrical rotor is configured to rotate circumferentially about a rotational axis and has a first end face and a second end face disposed opposite each other. The system includes a first and second end cover having a first and second surface which interface with a first and second end face of the rotor. The system includes a first and a second radial clearance disposed between the sleeve and the cylindrical rotor, where the radial clearances are configured to increase or decrease based at least in part on a pressure differential.

A hydrodynamic bearing includes an annular inner surface surrounding a rotary shaft to support and guide rotation thereof about the longitudinal rotation axis thereof in an upstream to downstream rotation direction. The inner surface includes an orifice for supplying lubricant and first and second discharge recesses distributed on either side of the supply orifice according to the width of the bearing. The first discharge recess opens into a first side groove and the second discharge recess opens into a second side groove. The first and second side grooves extend along a portion of the circumference of the bearing on lateral sides of the inner surface of the bearing, from the respective first and second discharge recesses towards a third discharge recess located downstream of the two recesses, to direct the lubricant collected by the first and second discharge recesses towards the third recess to be discharged outside the bearing.