Fabricated Turbine Housing

Abstract

A turbine housing is provided. The turbine housing includes a tongue diverter to manage the interaction between exhaust gases entering the inlet of the housing and gasses flowing within the housing. The tongue member may also be arranged to produce a constant ratio throughout the turbine housing between the cross-sectional area of fluid passages and the distance between the centroid of that area and the axis of rotation of the turbine. The housing may comprise a pair of half shells that each form a portion of the tongue diverter.

1 . A turbine housing comprising:
 a housing having a top portion and a bottom portion;   a turbine positioned within said housing;   an inlet at an outer end of said housing; and   a tongue diverter positioned adjacent to said inlet, wherein said tongue diverter is formed by an engagement between said top portion and said bottom portion.   
   
   
       2 . The turbine housing of  claim 1  wherein said tongue diverter is capable of reducing the interaction between gasses entering the inlet and gasses flowing within said housing. 
   
   
       3 . The turbine housing of  claim 1  further comprising a flow path within said housing, wherein the ratio between a cross-sectional area of said flow path and the distance between the centroid of said cross-sectional area and the center of said turbine remains approximately constant along a length of said flow path. 
   
   
       4 . The turbine housing of  claim 1  further comprising an outer body at least partially surrounding said housing. 
   
   
       5 . The turbine housing of  claim 4  further comprising at least one mesh ring disposed between said housing and said outer body. 
   
   
       6 . The turbine housing of  claim 4  wherein a mesh ring is positioned between said outer body and said housing near said inlet. 
   
   
       7 . The turbine housing of  claim 1  further comprising a wastegate valve connected to said housing. 
   
   
       8 . The turbine housing of  claim 7  further comprising a connecting tube disposed between said housing and said wastegate valve. 
   
   
       9 . The turbine housing of  claim 8  further comprising a mesh ring located attached to a portion of said connecting tube. 
   
   
       10 . The turbine housing of  claim 1  further comprising an adapter tube positioned about said turbine. 
   
   
       11 . The turbine housing of  claim 10  further comprising an exhaust pipe connected to said adapter tube. 
   
   
       12 . A turbine housing comprising
 a first half shell having a recessed portion;   a second half shell connected to said first half shell to form a housing;   an inlet at an outer end of said housing; and   a tongue diverter positioned adjacent to said inlet, wherein said tongue diverter is formed by an engagement between said recessed portion said second half shell.   
   
   
       13 . The turbine housing of  claim 12  wherein said first half shell overlaps said second half shell. 
   
   
       14 . The turbine housing of  claim 12  wherein said first half shell is welded to said second half shell. 
   
   
       15 . The turbine housing of  claim 12  wherein said second half shell includes a recessed portion. 
   
   
       16 . The turbine housing of  claim 15  wherein said tongue diverter is formed by an engagement between said recessed portion in said first half shell and said recessed portion in said second half shell. 
   
   
       17 . The turbine housing of  claim 12  further comprising a flow path within said housing, wherein the ratio between a cross-sectional area of said flow path and the distance between the centroid of said cross-sectional area and the center of said housing remains approximately constant along a length of said flow path. 
   
   
       18 . The turbine housing of  claim 12  further comprising a turbine positioned within said housing. 
   
   
       19 . The turbine housing of  claim 18  further comprising an adapter tube positioned about said turbine. 
   
   
       20 . The turbine housing of  claim 19  further comprising an exhaust pipe connected to said adapter tube.