Patent ID: 6024495
Filing Date: 2000-02-15
Classification: F01D,F04D,F05D,F16C

Abstract:
An axial sliding bearing for mounting the shaft (14) of an exhaust gas turbocharger (9) connected to an internal combustion engine (8) and supplied by way of the lubricating oil circuit (1) of the latter with lubricating oil (3) coarsely purified in a filter (6), said bearing being composed of a bearing body (20) connected fixedly to a bearing housing (17), of a bearing collar (19) rotating with the shaft (14) and of at least one lubricating gap (25, 25'), which is designed between the two and which is formed by a profiled annular surface (24, 24') and a plane sliding surface (23, 23') and is connected to an oil feed (21), whereina) the profiled annular surface (24, 24') is designed to rotate about or with the shaft (14), has a plurality of radially arranged lubricating oil grooves (26, 26') and, in each case, a wedge surface (27, 27') connected to these in the circumferential direction, and a catch surface (28, 28') is designed between each wedge surface (27, 27') and the lubricating oil groove (26, 26') adjacent to the latter,b) the lubricating grooves (26, 26') and the wedge surfaces (27, 27') are delimited radially outward by a sealing web (29, 29'),c) the sealing web (29, 29') has, in the region of the lubricating oil grooves (26, 26'), dirt grooves (30, 30') open to these and to the outside.