| CPC F01D 25/166 (2013.01) [F01D 5/005 (2013.01); F01D 25/18 (2013.01); F16C 17/26 (2013.01); F16C 19/184 (2013.01); F16C 19/548 (2013.01); F16C 33/60 (2013.01); F16C 33/6659 (2013.01); F16C 35/02 (2013.01); F16C 35/045 (2013.01); F16C 35/077 (2013.01); F05D 2220/40 (2013.01); F05D 2230/80 (2013.01); F05D 2260/98 (2013.01); F16C 2360/24 (2013.01)] | 17 Claims |
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1. An exhaust turbocharger comprising:
a modular bearing which is arranged between a compressor and a turbine and is designed for bearing a shaft, wherein the modular bearing includes a bearing assembly module having a rolling bearing or a bearing assembly module having a plain bearing,
wherein the modular bearing is inserted in a bearing housing with a receiving chamber dimensioned such that the bearing assembly module having the rolling bearing and the bearing assembly module having the plain bearing can be installed in the receiving chamber interchangeably, and can be removed from the receiving chamber without being destroyed, wherein each bearing assembly module defines one or more ducts on a compressor side of the bearing assembly module,
wherein the receiving chamber has an interface which is designed for making contact with a bearing flange of either bearing assembly module installed in the receiving chamber and for connecting an oil duct guided through the bearing housing to the one or more oil ducts which are guided through the bearing flange,
wherein the receiving chamber further has a step including a stop surface running substantially in a radial direction of the exhaust turbocharger, wherein the stop surface faces the compressor and defines an axial stop for the bearing assembly module installed on the compressor side, wherein the step divides the receiving chamber into (i) a first receiving chamber section arranged on the compressor side and (ii) a second receiving chamber section arranged on a turbine side, wherein the first receiving chamber section is larger in the radial direction than the second receiving chamber section, wherein the first and second receiving chamber sections are arranged axially adjacent to one another, wherein the step is arranged between the first and second receiving chamber sections, wherein the one or more oil ducts are connected to the duct defined in the bearing housing, and wherein the one or more ducts defined in the installed bearing assembly module are positioned within the first receiving chamber section of the exhaust turbocharger.
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14. A set of bearing assembly modules each for bearing a shaft of an exhaust turbocharger, the set of bearing assembly modules comprising:
a bearing assembly module having a rolling bearing, and
a bearing assembly module having a plain bearing,
wherein each bearing assembly module includes a first portion and a second portion, wherein the first portion is larger than the second portion in a radial direction, wherein each bearing assembly module defines a duct in the first portion, and wherein both bearing assembly modules of the set of bearing assembly modules can be installed in a receiving chamber of the exhaust turbocharger interchangeably to bear the shaft of the exhaust turbocharger and can be removed from the receiving chamber without being destroyed.
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16. A method for bearing a shaft of an exhaust turbocharger comprising a modular bearing that includes a bearing assembly module arranged between a compressor and a turbine of the exhaust turbocharger, wherein the modular bearing is inserted in a bearing housing with a receiving chamber, wherein the receiving chamber has a step including a stop surface running substantially in a radial direction of the exhaust turbocharger, wherein the stop surface faces the compressor and defines an axial stop for the bearing assembly module installed on a compressor side, and wherein the step divides the receiving chamber into (i) a first receiving chamber section arranged on the compressor side and (ii) a second receiving chamber section arranged on a turbine side, the method comprising:
selecting the bearing assembly module from a set of bearing assembly modules comprising a bearing assembly module having a rolling bearing and a bearing assembly module having a plain bearing, wherein both bearing assembly modules of the set of bearing assembly modules can be installed in the receiving chamber interchangeably, and can be removed from the receiving chamber without being destroyed, wherein each bearing assembly module defines one or more ducts on the compressor side of the bearing assembly module, and wherein the receiving chamber has an interface which is designed for making contact with a bearing flange of either bearing assembly module installed in the receiving chamber and for connecting an oil duct guided through the bearing housing to the one or more oil ducts which are guided through the bearing flange and
installing the selected bearing assembly module in the receiving chamber, wherein the first receiving chamber section receives an additional thrust bearing when the selected bearing assembly module is the bearing assembly module having the plain bearing, wherein the one or more oil ducts are connected to the duct defined in the bearing housing, and wherein the one or more ducts defined in the installed bearing assembly module are positioned within the first receiving chamber section of the exhaust turbocharger.
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