Unit assembly system for an exhaust-gas turbocharger

Abstract

The invention relates to a unit assembly system for the manufacture of exhaust-gas turbochargers () for internal combustion engines, of motor vehicles in particular, wherein the respective exhaust-gas turbocharger () has at least one hydrodynamic axial plain bearing () for supporting axial forces of a turbine wheel and/or of a compressor wheel () on a housing (), said axial plain bearing having with regard to an axis of rotation () of a shaft () supporting the turbine wheel and/or the compressor wheel () a plurality of wedge-shaped bearing segments () distributed in the circumferential direction, which bearing segments work together with at least one level, annular thrust surface () that extends transversely to the axis of rotation (). In order to be able to realize in as economical a manner as possible different exhaust-gas turbocharger types that differ from one another by differing loads of the at least one axial bearing (), the unit assembly system comprises different thrust elements () having the respective thrust surface (), which thrust elements differ from one another by having thrust surfaces () of different sizes.