Abb Schweiz Ag

Turbo Systems Switzerland Ltd.

Antje Hertel

Bruno Ammann

Christian Kreienkamp

Matthias Richner

Philippe Achtnich

Andrea Vacca

A centering device () for centering a turbine housing () with respect to a central axis () of a radial turbine of a turbo system is described. The centering device () includes a ring-shaped body () having an outer diameter Dand an inner diameter D, wherein a ratio of D/Dis ≤2. Additionally, the centering device () includes two or more centering elements () provided on a side surface () of the ring-shaped body () for engaging with respective complementary centering elements () provided on a bearing housing (). The two or more centering elements () are configured for allowing a radial thermal expansion of the ring-shaped body () during engagement of the two or more centering elements () with the respective complementary centering elements (). Further, a turbo system, including such a centering device as well as a method of centering a turbine housing are described.

Centering device for centering a turbine housing, turbo system including the centering device, and method of centering a turbine housing

A radial bearing arrangement of an exhaust gas turbocharger for mounting a shaft in a bearing housing is disclosed. The radial bearing arrangement comprises a radial bearing bush arranged between the shaft and the bearing housing, wherein the radial bearing bush features a radially outwardly projecting collar, which interacts in the axial direction with an axial stop on the bearing housing. The geometry of the radially outwardly projecting collar is interrupted by cut-outs, such that a force acting on the collar as a result of an oil feed pressure is minimized, and wherein the radial bearing bush is configured such that a lubricating film can form between an end surface of the radial bearing bush and a counterpiece arranged on the shaft.

Plain bearing with hydrodynamic axial securing

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Ehrendingen, Switzerland

Antje Hertel