Turbine housing for gas turbochargers

Abstract

A turbine housing for exhaust gas turbochargers includes an outlet pipe and an external housing connected therewith. A rotor housing is disposed in the external housing and has a pipe-shaped neck operably coupled with the outlet pipe and axially displaceable relative to the same. A separate sealing ring is positioned operably between the neck and the outlet pipe, supported by the outlet pipe, and has an inwardly turned sealing portion sealingly and slidingly engaging the neck to form a secure gas seal therebetween.

1 - 10 . (canceled) 
     
     
         11 . A turbine housing for exhaust gas turbochargers, comprising:
 an outlet pipe through which exhaust gas flows;   an external housing connected with said outlet pipe;   a rotor housing disposed in said external housing and having a pipe-shaped neck operably coupled with said outlet pipe and axially displaceable relative thereto; and   a separate sealing ring disposed operably between said neck and said outlet pipe, being supported by said outlet pipe and having an inwardly turned sealing portion sealingly and slidingly engaging said neck to form a secure gas seal therebetween.   
     
     
         12 . A turbine housing as set forth in  claim 11 , wherein:
 said inwardly turned sealing portion of said sealing ring has a contact surface positioned abuttingly against an outside portion of said neck.   
     
     
         13 . A turbine housing as set forth in  claim 11 , wherein:
 said inwardly turned portion of said sealing ring is configured to apply radial tension to said neck.   
     
     
         14 . A turbine housing as set forth in  claim 11 , wherein:
 said inwardly turned portion of said sealing ring has a free end segment with a tapered funnel shape.   
     
     
         15 . A turbine housing as set forth in  claim 14 , wherein:
 said free end segment is disposed at an angle in the range of 5° to 20° relative to an outside portion of said neck.   
     
     
         16 . A turbine housing as set forth in  claim 11 , wherein:
 said sealing ring encircles said outlet pipe.   
     
     
         17 . A turbine housing as set forth in  claim 16 , including:
 a support ring surrounding said sealing ring; and   a thermal fusion seam joining said support ring and said sealing ring to said outlet pipe.   
     
     
         18 . A turbine housing as set forth in  claim 16 , including:
 a clamp attaching said sealing ring to said outlet pipe.   
     
     
         19 . A turbine housing as set forth in  claim 11 , wherein:
 said sealing ring is constructed from a nickel-based alloy.   
     
     
         20 . A turbine housing as set forth in  claim 11 , wherein:
 said sealing ring has a double wall construction.